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As an expert plumber specializing in heating systems in Ireland, I understand the importance of a reliable and efficient hot water system in any household. When it comes to hot water tanks, there are various factors to consider, including the need for replacement, cost considerations, available options, and other related components. In this comprehensive guide, we will explore the topic of hot water tank replacement, addressing common queries and providing valuable insights for homeowners in Ireland.

Table of Contents

What is a hot water tank?

Hot water tanks or cylinders are commonly used in Irish homes to heat and store hot water. They are insulated tanks that typically hold 120-600 liters of water.

Hot Water Tank
Replacement
Hot Water Tank Replacement

Immersion heaters are electric heating elements installed in the hot water cylinder. When switched on, they heat the water in the tank. Immersion heaters are popular due to Ireland’s widespread access to electricity.

The most common types of hot water cylinders found in Ireland are copper, stainless steel and glass-lined steel. Copper and stainless steel cylinders tend to last longer than glass-lined.

Building regulations in Ireland require that hot water cylinders and immersion heaters be properly insulated to minimize heat loss. Cylinders must be lagged with at least 50mm of insulation.

Many Irish homes have dual immersion heaters installed – one operates on cheaper night-rate electricity, the other can boost the hot water temperature during the day.

Due to Ireland’s cool climate, hot water cylinders need to be replaced every 8-12 years as they corrode over time. Hard water also contributes to corrosion.

Newer energy efficient alternatives are now available like heat pump or solar thermal hot water systems, but hot water cylinders remain the most common option.

Signs and Reasons for Hot Water Tank Replacement

The first sign that your tank may need replacing is if it’s showing rust on the bottom or leaking from the seams. Loud banging noises coming from inside are also a bad sign. Another indication is if it’s taking longer and longer to heat up the water – meaning it’s nearing the end of its life.

Most often the issues are a broken heating element or worn out insulation. Sometimes a new element is all that’s needed, but after many years the whole tank must be replaced. The lining inside gets thinner over time and allows rust to form on the interior.

When replacing, I recommend considering upgrading to a larger size if budget allows. A bigger tank means more hot water availability and lower heating bills thanks to better insulation. And if your family is growing, larger capacity is better. You could also look at a tankless water heater for on-demand hot water.

Hot Water Tank Replacement Options

There are several types of water heaters commonly used in Ireland that you’ll want to consider when deciding on a replacement. Each has its pros and cons in terms of efficiency, cost and installation requirements.

Hot Water Tank
Replacement
Hot Water Tank Replacement
Hot Water Tank
Replacement
Hot Water Tank Replacement

One option is a vented water tank, which requires a cold water tank in the attic and venting to the outside. It provides constant pressure but uses room space and can be less efficient over time. Unvented systems store heated water directly without needing the extra tank or venting. They save space but require electrical or gas power.

Tankless or demand-type water heaters are also popular. As the name implies, they heat water only as you need it, so you never run out mid-shower. However, they tend to be more expensive up front. Larger families may go through water faster than a tankless can keep up.

Energy efficiency is important both for lower bills and reducing your environmental impact. Look for units with insulation ratings of R16 or more. Some include additional features like solar boosting or heat recovery from drain water or showers. These can significantly cut heating costs in the long run.

Cost Factors and Considerations

There are a few key factors that determine the cost of a hot water tank replacement in Ireland:

Size is one factor – larger tanks that hold more water obviously cost more than smaller sizes. Tank style also affects the price, with vented systems generally cheaper but requiring more installation work. Tankless units are more expensive up front but save on water heating in the long run.

Location is another cost consideration. Replacing a tank in the attic requires more labor than a basement unit. Additional piping or electrical work needed can also increase the price. Insulation and energy efficient features will impact the replacement budget too.

To get the best value, I recommend balancing price with quality. Spending a bit extra on a higher rated insulated tank will pay itself back through lower bills. Going with a reputable installer also provides peace of mind. Consider replacement costs versus repairing an older unit too.

With a little research on options, most homeowners can find an affordable yet effective replacement. Give me a call to discuss your budget and get quotes customized to your home’s needs. Replacing at the optimal time saves money versus urgent replacements down the road.

Hot Water Tank Replacement Process

The process typically involves: draining the old tank, disconnecting pipes and power, removing the tank, preparing the new area, installing the new tank, reconnecting pipes and power, refilling, and testing.

Safety is a top priority. Permits may be required and work must adhere to plumbing codes. Proper ventilation, clearance and secure placement help prevent accidents.

Immersion heaters should be replaced every 8-10 years. Thermostats also need periodic changing to ensure proper temperature control.

Repairs or replacement of hot water pumps, pump assemblies or controllers may be necessary over time.

Faucet components like ceramic disc cartridges or cartouche taps eventually wear out and require replacement.

Emergency Hot Water Tank Replacement

A sudden failure means no hot water until replacement. Symptoms could include leaks, won’t power on or heat up at all.

We offer 24/7 emergency response for compromised units. Temporary fixes may include space heaters or boiling water until permanent replacement. Safety shut-offs help prevent flooding.

Hot Water Tank Brands and models

What are the best Hot Water Tanks

Here is a table comparing some popular hot water cylinder models in Ireland with their pros, cons, capacity and approximate price:

ModelProsConsCapacityPrice (EUR)
Kingspan KS120Stainless steel resists corrosion, good insulationHigher cost, smaller capacity120L€500-800
Megaflo SystemCompactFast heating, good warrantyGlass lining can fail over time150L€600-900
Gledhill Pulse SlimlineCompact size, stainless steelNeeds separate expansion vessel110L€800-1200
IBP Solar PrimaGood value copper cylinderHard water reduces life200L€400-600
Joule HorizonTop insulation rating, stainless steelExpensive, larger size210L€1200-1500
Dimplex XLELower purchase cost, fast heatingHigh running costs, less efficient100L€250-400
Grant VortexBlueIntegrated system, high efficiencyComplex, high upfront cost150L€5000+
a table comparing famous hot water tank cylinders brands, models, pro’s and con’s

Size – The most common capacities for cylinders are 120L, 150L, 200L and 300L. Smaller 1-2 person households can opt for 90L or 100L. Larger cylinders are needed for bigger families.
Positioning – Cylinders are usually located in the hot press (airing cupboard) or utility room. They should be close to the water and heating systems.
Plumbing – A cold water storage tank in the attic supplies the cylinder. The hot water feeds radiators and taps via gravity. A circulation pump improves flow.
Statutory Tank Inspections – Tanks over 500 liters require an inspection by law every 5 years in Ireland to check condition and insulation.
Ventilation – Cylinders need an overflow pipe to safely release expanded hot water. Unvented cylinders don’t require this.
Control – Immersions are controlled by time switches or thermostats. Newer smart controls allow remote monitoring and adjustment.
Legionella – Storing hot water risks Legionella bacteria growth. Cylinders should maintain 50-60°C temperatures to prevent this.
Alternatives – Newer combi boilers provide instant hot water without a storage cylinder. Heat pump systems also don’t need cylinders.
Maintenance – Flushing the tank yearly and replacing the magnesium anode rod every 5 years extends cylinder life.

How much does it cost to replace a hot water cylinder?

The cost to replace a hot water cylinder can vary depending on several factors, such as the size of the cylinder, the type of cylinder (vented or unvented), the complexity of the installation, and the region in Ireland. On average, the cost of replacing a hot water cylinder can range from €500 to €1500, including the cost of the cylinder itself and the installation labor.

How much does it cost to boost hot water?

The cost to boost hot water in your system will depend on the method you choose. If you’re using an immersion heater, the cost will depend on the electricity rates in your area and the time it takes for the immersion heater to heat the water. On average, the cost of electricity to boost hot water…

How to fix a leaking hot water tank?

Fixing a leaking hot water tank typically involves identifying the source of the leak and taking appropriate steps to repair it. Common causes of leaks can include a faulty pressure relief valve, corroded pipes, or a damaged tank. Depending on the severity of the leak…

How long does water stay hot in an immersion tank?

The length of time that water stays hot in an immersion tank can vary depending on several factors, such as the insulation of the tank, the initial temperature of the water, and the usage patterns. On average, water in an immersion tank can stay hot for several hours…

Why is my hot water cylinder leaking?

A leaking hot water cylinder can be caused by various factors. Common reasons include a damaged or corroded tank, a faulty pressure relief valve, loose connections, or excessive pressure within the system. It’s important to address a leaking hot water cylinder promptly…

How to replace a hot water tank?

Replacing a hot water tank involves several steps. First, you will need to drain the existing tank and disconnect it from the water and power supply. Then, you can remove the old tank and install the new one, making sure to connect the necessary pipes and fittings correctly…

What size hot water cylinder is suitable for a family of 4?

For a family of 4, it is generally recommended to have a hot water cylinder with a capacity of around 150-200 liters. This should provide an adequate supply of hot water for daily needs, such as showering, bathing, and washing clothes…

How long do hot water cylinders last?

The lifespan of a hot water cylinder can vary depending on factors such as the quality of the cylinder, maintenance practices, and water conditions. On average, a well-maintained hot water cylinder can last between 10 to 15 years. However, some cylinders may last longer…

What size hot water cylinder do I need?

The size of the hot water cylinder you need depends on the hot water demand in your household. Factors such as the number of occupants, their usage patterns, and the types of appliances using hot water should be considered. As a general guideline…

How much does it cost to replace a hot water cylinder?

The cost to replace a hot water cylinder can vary depending on several factors, such as the size of the cylinder, the type of cylinder (vented or unvented), the complexity of the installation, and the region in Ireland. On average, the cost of replacing a hot water cylinder can range from €500 to €1500, including the cost of the cylinder itself and the installation labor.

What size hot water cylinder do I need?

The size of the hot water cylinder you need depends on the hot water demand in your household. Factors such as the number of occupants, their usage patterns, and the types of appliances using hot water should be considered. As a general guideline…

How much does it cost to install a hot water cylinder?

The cost of installing a hot water cylinder can vary depending on several factors, including the complexity of the installation, the type of cylinder, and the region in Ireland. On average, the installation cost can range from €500 to €1000, but it’s best to get a specific quote from a qualified plumber…

How to install a hot water cylinder?

Installing a hot water cylinder involves several steps and should be done by a qualified plumber. The process typically includes selecting the right location for the cylinder, connecting the necessary plumbing and electrical components, and ensuring proper insulation and safety measures are in place…

How to fix a hot water cylinder?

Fixing a hot water cylinder will depend on the specific problem you are facing. If you’re experiencing a leak, it’s important to identify the source and repair or replace the damaged components. Other common issues can include faulty thermostats, malfunctioning valves, or sediment buildup, which may require professional assistance to troubleshoot and resolve…

How to stop a hot water tank from leaking?

To stop a hot water tank from leaking, it’s important to first identify the source of the leak. Common causes can include a faulty pressure relief valve, corroded pipes, or a damaged tank. Once the source is identified, you can take appropriate steps## How to stop a hot water tank from leaking?

To stop a hot water tank from leaking, it’s important to first identify the source of the leak. Common causes can include a faulty pressure relief valve, corroded pipes, or a damaged tank. Once the source is identified, you can take appropriate steps to fix the issue. Here are some general steps you can follow:

  1. Turn off the power supply: Before attempting any repairs, make sure to turn off the power supply to the hot water tank. This will help ensure your safety during the process.
  2. Drain the tank: If the leak is substantial or if you need to access the affected area, it’s advisable to drain the hot water tank completely. Attach a hose to the drain valve and direct the water to a suitable drainage location.
  3. Identify the source of the leak: Inspect the tank and the surrounding connections to determine the source of the leak. Check for any visible cracks, corrosion, or loose fittings. The pressure relief valve, inlet/outlet connections, and the tank itself are common areas to inspect.
  4. Replace faulty parts: If you find a specific component causing the leak, such as a faulty valve or a corroded pipe, you may need to replace it. Consult the manufacturer’s instructions or seek professional assistance to ensure proper replacement and installation.
  5. Repair the tank: If the tank itself is leaking, it may require professional repair or replacement. Depending on the extent of the damage, a plumber or a specialist in hot water systems can guide you on the best course of action.
  6. Test for leaks: After making the necessary repairs or replacements, refill the tank and carefully monitor for any signs of leakage. Ensure all connections are secure and properly sealed.

If you’re uncertain about the repair process or if the leak persists, it’s recommended to consult a qualified plumber or a professional in hot water systems. They have the expertise to assess the situation accurately and provide appropriate solutions.

What size of hot water cylinder do I need?

The size of the hot water cylinder you need depends on the hot water demand in your household. Factors such as the number of occupants, their usage patterns, and the types of appliances using hot water should be considered. As a general guideline…

How long does a copper hot water cylinder last?

Copper hot water cylinders are known for their durability and can have a lifespan of 20 to 25 years or even more with proper maintenance. However, the actual lifespan can vary depending on factors such as water quality, usage patterns, and maintenance practices…

How much is a new hot water cylinder?

The cost of a new hot water cylinder can vary depending on various factors such as the size, type (vented or unvented), brand, and any additional features. On average, a new hot water cylinder can range from €500 to €2000 or more, depending on the specifications and installation requirements…

How long does a hot water cylinder last?

The lifespan of a hot water cylinder can vary depending on factors such as the quality of the cylinder, maintenance practices, and water conditions. On average, a well-maintained hot water cylinder can last between 10 to 15 years. However, some cylinders may last longer…

How to install a hot water cylinder?

Installing a hot water cylinder involves several steps and should be done by a qualified plumber. The process typically includes selecting the right location for the cylinder, connecting the necessary plumbing and electrical components, and ensuring proper insulation and safety measures are in place…

How to change hot and cold taps to a mixer?

Changing hot and cold taps to a mixer involves replacing the existing separate taps with a single mixer tap that controls both hot and cold water flow. The specific process may vary depending on the type of taps and the plumbing system in your home. Here are general steps to consider:

  1. Turn off the water supply: Before starting any plumbing work, turn off the water supply to the taps. You may need to locate the isolation valves or shut off the main water supply.
  2. Drain the water: Open the taps to drain any remaining water from the pipes.
  3. Remove the existing taps: Use a suitable wrench or spanner to disconnect the existing hot and cold taps from the water pipes. This may involve loosening and removing nuts or screws that secure the taps in place.
  4. Prepare the new mixer tap: Read the manufacturer’s instructions for the specific mixer tap you have purchased. Assemble any required components according to the instructions.
  5. Connect the mixer tap: Position the new mixer tap in the desired location and connect it to the water pipes. Use appropriate fittings, such as flexible hoses or copper pipes, to ensure a secure and leak-free connection.
  6. Secure the tap: Once the mixer tap is properly connected, secure it in place using the provided fixings or mounting brackets. Follow the manufacturer’s instructions for proper installation.
  7. Test the water flow: Turn on the water supply and test the mixer tap to ensure hot and cold water flows correctly. Check for any leaks and make necessary adjustments if needed.

It’s important to note that plumbing work can be complex, and if you’re unsure about the process or don’t have experience with plumbing tasks, it’s advisable to hire a professional plumber to ensure the job is done safely and correctly.

How much is a hot water cylinder?

The cost of a hot water cylinder can vary depending on various factors such as the size, type (vented or unvented), brand, and any additional features. On average, a hot water cylinder can range from €500 to €2000 or more, depending on the specifications and installation requirements…

How to replace a hot water cylinder?

Replacing a hot water cylinder involves several steps and should be done by a qualified plumber. The process generally includes draining the existing cylinder, disconnecting the plumbing and electrical connections, removing the old cylinder, installing the new cylinder, and reconnecting the plumbing and electrical components…

How long does an immersion heater keep water hot for?

The duration for which an immersion heater keeps water hot depends on various factors, including the initial temperature of the water, the insulation of the tank or cylinder, and the heat loss rate. On average, an immersion heater can keep water hot for several hours…

How do I know if my hot water cylinder needs replacing?

Several signs can indicate that your hot water cylinder may need replacing. These include:

  1. Age: If your hot water cylinder is approaching or exceeding its average lifespan of 10 to 15 years, it may be time to consider a replacement.
  2. Leaks: Persistent leaks from the cylinder or its fittings may indicate internal damage or corrosion, which could require a replacement.
  3. Rust or corrosion: Visible signs of rust or corrosion on the cylinder’s surface or fittings may indicate deterioration, potentially necessitating a replacement.
  4. Inefficiency: If you notice a significant decrease in hot water supply or the cylinder struggles to maintain consistent water temperatures, it could indicate an inefficient or failing cylinder.

How to change a washer on a hot bathroom tap?

To change a washer on a hot bathroom tap, you can follow these general steps:

  1. Turn off the water supply: Locate the isolation valve or shut off the main water supply to the bathroom.
  2. Prepare the workspace: Place a towel or cloth in the sink or bathtub to prevent any small parts from falling down the drain.
  3. Remove the tap handle: Use a screwdriver or an appropriate tool to remove the screw or cap on top of the tap handle. Once the screw is removed, carefully lift off the handle.
  4. Access the valve: Underneath the handle, you will find the valve assembly. This may involve a spindle or cartridge, depending on the type of tap. Use an adjustable spanner or wrench to loosen and remove the valve assembly.
  5. Replace the washer: Once the valve assembly is removed, you’ll see the washer at the bottom. Remove the old washer and replace it with a new one of the same size and type. It’s a good idea to take the old washer to a hardware store to ensure you get a suitable replacement.
  6. Reassemble the tap: Place the valve assembly back into the tap body, ensuring it sits properly. Tighten it with the wrench to secure it in place. Then, put the tap handle back on and secure it with the screw or cap.
  7. Turn on the water supply: Open the isolation valve or turn on the main water supply to restore water flow to the bathroom.
  8. Test for leaks: Turn on the tap and check for any leaks. If you notice any leaks, make sure the valve assembly is properly tightened or consider replacing other components if necessary.

It’s worth noting that tap designs can vary, so the specific steps may differ slightly depending on the type of tap you have. If you’re unsure or uncomfortable with the process, it’s always best to consult a professional plumber for assistance.

How much is a new hot water tank?

The cost of a new hot water tank can vary depending on factors such as the capacity, brand, type (vented or unvented), and any additional features. On average, a new hot water tank can range from several hundred dollars to a few thousand dollars. The specific price will depend on the specifications and installation requirements.

How long does water stay hot in an immersion heater?

The duration for which water stays hot in an immersion heater depends on factors such as the initial water temperature, the insulation of the tank or cylinder, and the heat loss rate. On average, water heated by an immersion heater can stay hot for a few hours, but the exact duration can vary. It’s worth noting that over time, the water temperature will gradually decrease due to heat loss to the surroundings.

What to do when a hot water tank is leaking?

If you discover a leak in your hot water tank, it’s important to take immediate action to prevent further damage. Here’s what you can do:

  1. Turn off the power: If your hot water tank has an electric heating element, turn off the power supply at the circuit breaker. For a gas-powered heater, turn off the gas supply.
  2. Turn off the water supply: Locate the isolation valve or shut off the main water supply to the hot water tank.
  3. Drain the tank: Connect a garden hose to the drain valve at the bottom of the tank and direct the other end to a suitable drainage area. Open the drain valve to allow the water to drain out of the tank.
  4. Assess the leak: Try to identify the source of the leak. It could be a faulty valve, a corroded pipe, or a crack in the tank itself. Depending on the severity and location of the leak, you may need to consult a professional plumber for repairs or consider replacing the tank.
  5. Call a professional: If you’re unsure about how to proceed or if the leak is significant, it’s best to contact a professional plumber. They can assess the situation, provide guidance or recommendations, and perform any necessary repairs or replacements.

It’s important to address a leaking hot water tank promptly to avoid water damage and potential safety hazards.

How to fix a leaking hot water tank?

Fixing a leaking hot water tank typically requires the expertise of a professional plumber. However, if the leak is minor and you’re comfortable with basic plumbing tasks, you can try the following steps:

  1. Turn off the power and water supply: Follow the same steps mentioned earlier to turn off the power and water supply to the tank.
  2. Identify the source of the leak: Inspect the tank and try to determine the exact location of the leak. It could be from a valve, a fitting, or a crack in the tank itself.
  3. Tighten or replace fittings: If the leak is coming from a loose or faulty fitting, you can try tightening it with a wrench. If that doesn’t solve the issue, you may need to replace the fitting with a new one.
  4. Patch small cracks: For minor cracks in the tank, you can use a suitable epoxy or sealant designed for hot water tanks. Follow the manufacturer’s instructions to properly apply the sealant and allow it to cure.
  5. Consider professional help: If the leak persists or if it’s a significant leak, it’s best to contact a professional plumber. They have the expertise and tools to assess and repair the issue effectively and safely.

How to fix a leaking hot water cylinder?

Fixing a leaking hot water cylinder is a task best left to a professional plumber. However, if you want to attempt temporary measures before professional help arrives, you can follow these steps:

  1. Turn off the power and water supply: Similar to fixing a leaking hot water tank, start by turning off the power and water supply to the cylinder.
  2. Assess the leak: Identify the source of the leak. It could be from a valve, a fitting, or a crack in the cylinder.
  3. Tighten or replace fittings: If the leak is coming from a loose or faulty fitting, try tightening it with a wrench. If it doesn’t solve the issue, you may need to replace the fitting with a new one.
  4. Patch small cracks: For minor cracks in the cylinder, you can use a suitable epoxy or sealant designed for hot water cylinders. Follow the manufacturer’s instructions to properly apply the sealant and allow it to cure.
  5. Call a professional plumber: It’s crucial to contact a professional plumber to assess and repair the leak. They have the necessary expertise and equipment to handle hot water cylinders and ensure a long-term, safe solution.

How to fix a leaking cylinder?

If you are referring to fixing a leaking water cylinder, it’s essential to clarify the specific type of cylinder you are referring to. If it’s a hot water cylinder, you can follow the steps mentioned earlier for fixing a leaking hot water cylinder. If it’s a different type of cylinder, such as a gas cylinder or an air cylinder, the steps for fixing the leak may vary significantly. It’s important to consult a professional or refer to the manufacturer’s instructions for the specific cylinder type to ensure proper handling and repair.

What size water cylinder do I need?

The size of the water cylinder you need depends on your hot water demand. Factors such as the number of occupants, their usage patterns, and the types of appliances using hot water should be considered. As a general guideline, a small household with 1-2 occupants may require a cylinder around 120-150 liters. A medium-sized household with 3-4 occupants may need a cylinder between 150-200 liters. Larger households with 5 or more occupants may require a cylinder of 200 liters or more. However, it’s recommended to consult a professional plumber who can assess your specific needs and recommend the appropriate size for your situation.

How muchdoes a new cylinder cost?

The cost of a new cylinder can vary depending on several factors, including the type of cylinder, its capacity, and the brand. Additionally, labor costs for installation may vary depending on your location and the complexity of the installation. As of my knowledge cutoff in September 2021, the cost of a new hot water cylinder can range from a few hundred dollars to several thousand dollars. It’s best to contact local suppliers or consult with a professional plumber to get accurate and up-to-date pricing information for your specific requirements and location.

How to change the immersion heater on an unvented cylinder?

Replacing the immersion heater on an unvented cylinder typically involves the following steps:

  1. Turn off the power: Before starting any work, ensure that the power supply to the immersion heater is turned off at the circuit breaker.
  2. Drain the cylinder: Connect a hose to the drain valve at the base of the cylinder and direct the other end to a suitable drainage area. Open the drain valve to empty the cylinder of water. Be cautious as the water may still be hot.
  3. Remove the old immersion heater: Locate the access point or cover for the immersion heater on the cylinder. It is usually located near the top of the cylinder. Unscrew or remove the cover to access the immersion heater. Disconnect the electrical wiring from the immersion heater using appropriate tools. Unscrew the immersion heater from its housing and carefully remove it from the cylinder.
  4. Install the new immersion heater: Take the new immersion heater and insert it into the housing, ensuring a proper fit. Use appropriate tools to tighten it securely. Reconnect the electrical wiring to the new immersion heater, following the manufacturer’s instructions or consulting a professional if needed.
  5. Refill and test: Close the drain valve and turn on the water supply to refill the cylinder. Once the cylinder is filled, check for any leaks. Finally, restore power to the immersion heater by turning on the circuit breaker.

It’s important to note that working with electrical components and water heaters can be dangerous. If you’re not confident or experienced in performing this task, it’s best to hire a professional plumber or electrician to ensure a safe and proper installation.

Hot water tanks for apartments

Combination cylinders, also known as combi cylinders, combine the functions of a hot water cylinder and a central heating boiler within a single unit. They are compact and designed to provide both hot water and central heating. Combination cylinders are suitable for properties with limited space or those that do not have a separate boiler room. They are often used in apartments, small houses, or retrofitting projects.

Hot water tanks for houses and apartments have some key differences due to the distinct requirements and constraints of each case. Here are the main differences to consider:

  1. Size and capacity: Houses generally have more space available for hot water tanks compared to apartments, allowing for larger tanks with higher capacities. Apartments, on the other hand, often have limited space, so hot water tanks are typically smaller and designed to fit in compact areas such as utility closets or under sinks.
  2. Water demand: Houses generally have higher hot water demand due to larger families or more occupants. As a result, hot water tanks for houses are designed to accommodate higher flow rates and store larger volumes of hot water. Apartments typically have lower hot water demand, and the tanks are sized accordingly to meet the needs of the average number of occupants.
  3. Number of units: Apartments usually have multiple units sharing a common hot water system. In such cases, a centralized hot water system, such as a boiler or a central hot water tank, may be used to supply hot water to all units. This centralized system can be more efficient in terms of space utilization and energy consumption. In houses, each unit typically has its own dedicated hot water tank.
  4. Installation and maintenance: Installing hot water tanks in apartments can be more challenging due to limited access and space constraints. It may require specialized installation techniques, such as using small or compact tanks, installing tanks in unconventional areas, or utilizing tankless water heaters that take up less space. Maintenance of hot water tanks in apartments may also be more complex due to limited access for repairs or replacements.
  5. Energy efficiency: Energy efficiency is a crucial consideration for both houses and apartments. However, apartments often have more stringent energy efficiency requirements due to building codes and regulations. This may influence the selection of hot water tanks with higher energy efficiency ratings or the use of alternative technologies like tankless water heaters or heat pump water heaters.
  6. Water pressure: In apartments, the water pressure may be regulated by the building’s plumbing system to ensure consistent pressure across all units. Hot water tanks used in apartments need to accommodate the regulated water pressure and maintain it throughout the building. In houses, the water pressure is typically controlled at the individual unit level, allowing for more flexibility in selecting hot water tanks.
  7. Cost and ownership: In apartments, the cost of hot water tanks is usually borne by the building owner or management company, and the maintenance and repairs are their responsibility. In houses, the homeowner is generally responsible for the cost, maintenance, and repairs of the hot water tank.

It’s important to note that specific requirements and constraints can vary depending on the location, building regulations, and the type of apartment or house. Consulting with a professional plumber or considering the specific guidelines and regulations in your area is recommended to ensure that the hot water tank chosen meets the specific needs of the property.

What types of hot water cylinders are available?

Several types of hot water cylinders are available, each with its own characteristics and advantages. Here are some common types of hot water cylinders:

  1. Vented Cylinder: Vented cylinders are the traditional type of hot water storage system. They have an open vent pipe connected to a cold water tank in the loft. The vent pipe allows for the expansion of hot water as it heats up. Vented cylinders are gravity-fed, meaning that water pressure relies on the height difference between the cylinder and the outlets. They are typically found in older properties and may require a separate pump for higher pressure.
  2. Unvented Cylinder: Unvented cylinders are pressurized hot water systems that do not require a cold water tank in the loft. They are directly connected to the mains water supply, which provides high-pressure hot water to the outlets. Unvented cylinders are a popular choice for modern homes as they offer high flow rates and can be installed in various locations, including airing cupboards and garages. They require adequate safety features such as pressure relief valves and expansion vessels to manage excess pressure.
  3. Thermal Store Cylinder: Thermal store cylinders are a type of unvented cylinder that works by storing hot water separately from the heating system. They have a dedicated heat exchanger that transfers heat from the primary heating circuit to the stored water. Thermal store cylinders are often used in properties with renewable energy systems, as they can efficiently integrate multiple heat sources, such as solar panels or heat pumps.
  4. Combination Cylinder: Combination cylinders, also known as combi cylinders, combine the functions of a hot water cylinder and a central heating boiler within a single unit. They are compact and designed to provide both hot water and central heating. Combination cylinders are suitable for properties with limited space or those that do not have a separate boiler room. They are often used in apartments, small houses, or retrofitting projects.
  5. Heat Pump Cylinder: Heat pump cylinders are specifically designed to work with heat pump systems. These systems extract heat from the surrounding air, ground, or water and transfer it to the water in the cylinder. Heat pump cylinders are well-insulated to minimize heat loss and can be used in conjunction with both vented and unvented systems, depending on the specific configuration.
  6. Solar Thermal Cylinder: Solar thermal cylinders are designed to work with solar water heating systems. They incorporate heat exchangers that allow the transfer of heat from solar collectors to the stored water. Solar thermal cylinders often have additional insulation and controls to optimize the performance of the solar heating system.

It’s important to note that the availability of specific types of hot water cylinders may vary depending on your location and the local market. When selecting a hot water cylinder, consider factors such as your hot water demand, available space, energy efficiency, and compatibility with existing or planned heating systems. Consulting with a professional plumber or heating engineer can help you determine the most suitable type of hot water cylinder for your needs.

 Vented (Copper)Vented (Steel)Pressurised (Steel)
Range of capacities86L to 206L100L to 180L90L to 500L
Range of heights900 to 1500mm
36” to 60”
900 to 1200mm
36” to 48”
745 to 1946mm
29” to 77”
Range of diameters375 or 450mm
15” or 18”
400 or 450mm
16” or 18”
478, 550, 625 or 694mm
19”, 22”, 25” or 27”
Max pressure20PSI
40PSI models available
40PSI174PSI regulated to
44PSI
Cased for aesthetic finishNoNoYes
Guarantee2 years12 yearsUp to 25 years
Loft space for feeder tankYesYesNo
Hot water cylinder types and their characteristics

How much is a new immersion heater?

In Ireland, the cost of a new immersion heater can vary depending on factors such as the brand, model, capacity, and additional features. Generally, immersion heaters in Ireland range in price from €50 to €300 or more. The price may also depend on whether you opt for a standard immersion heater or a more energy-efficient model.

How much to replace an immersion heater?

The cost to replace an immersion heater in Ireland can vary depending on various factors such as the complexity of the installation, any necessary plumbing or electrical work, and the labor rates in your area. Typically, the total cost, including the immersion heater, labor, and any additional materials, may range from €200 to €500 or more. It’s advisable to contact local plumbers or heating professionals in Ireland to obtain accurate estimates based on your specific requirements.

Who fixes immersion heaters?

In Ireland, immersion heaters are typically installed and repaired by professional plumbers or heating engineers who specialize in hot water systems. These professionals have the necessary expertise, knowledge, and tools to diagnose and fix immersion heater issues. It’s recommended to contact a qualified plumber or heating engineer in your local area for immersion heater repairs in Ireland.

Why is an immersion heater not working?

Several reasons can cause an immersion heater to stop working. Some common issues in Ireland include:

  1. Faulty thermostat: The thermostat that controls the temperature of the water may be malfunctioning and needs replacement.
  2. Failed heating element: The heating element within the immersion heater may have burned out and requires replacement.
  3. Electrical issues: Problems with the electrical connection, fuse, or wiring can prevent the immersion heater from functioning correctly.
  4. Scale buildup: The buildup of limescale on the heating element can reduce its efficiency and lead to overheating or failure.

To determine the exact cause of the immersion heater not working, it’s best to consult a professional plumber or heating engineer in Ireland who can inspect the system and provide an accurate diagnosis and repair solution.

How much does it cost to run an immersion heater all day?

The cost of running an immersion heater all day in Ireland depends on several factors, including the wattage of the immersion heater, the electricity tariff, and the duration of usage. As electricity rates can vary, it’s recommended to refer to your electricity bill or contact your electricity provider to determine the specific cost per kilowatt-hour (kWh).

To calculate the cost, you can multiply the wattage of the immersion heater by the number of hours it operates in a day and then multiply that by the cost per kWh. For example, if your immersion heater is 3,000 watts (3 kW), and you run it for 10 hours a day, and the cost per kWh is €0.20, the daily cost would be:

3 kW x 10 hours x €0.20 = €6.00

Please note that this is a simplified calculation, and actual costs may vary based on factors such as the efficiency of the immersion heater and any off-peak or time-of-use electricity tariffs available.

How does an immersion heater work?

An immersion heater consists of a heating element that is immersed in the water within a hot water cylinder. When electricity is supplied to the heating element, it generates heat, which is transferred to the surrounding water, raising its temperature.

The immersion heater is controlled by a thermostat, which monitors the water temperature and switches the heating element on or off to maintain the desired temperature. When the water temperature falls below the set level, the thermostat energizes the heating element, and once the desired temperature is reached, it switches off the power to the element.

The heated water is stored in the hot water cylinder until it is needed for taps, showers, or other hot water outlets in the building.

How long should an immersion heater be on for?

The duration for which an immersion heater should be on depends on individual requirements and usage patterns. In general, it’s recommended to set the immersion heater to operate during periods when hot water is needed.

It’s common for households in Ireland to set the immersion heater to run for a couple of hours in the morning and a few hours in the evening to ensure an adequate supply of hot water throughout the day. However, the specific duration can vary based on factors such as the size of the hot water cylinder, the hot water demand of the household, and any time-of-use electricity tariffs in place.

Consulting with a professional plumber or heating engineer can help determine the optimal duration for your immersion heater based on your specific needs and circumstances.

How to change an immersion heater?

Replacing an immersion heater involves several steps. Here is a general outline of the process, but it’s important to note that specificAs an expert plumber specialized in heating systems in Ireland, I can provide you with specific information relevant to the Irish market. Please note that the following information is based on my expertise and may not reflect the exact current prices or practices in the market. It’s always advisable to consult with local professionals for accurate and up-to-date information.

How much is a new immersion heater?

In Ireland, the cost of a new immersion heater can vary depending on factors such as the brand, model, capacity, and additional features. Generally, immersion heaters in Ireland range in price from €50 to €300 or more. The price may also depend on whether you opt for a standard immersion heater or a more energy-efficient model.

How much to replace an immersion heater?

The cost to replace an immersion heater in Ireland can vary depending on various factors such as the complexity of the installation, any necessary plumbing or electrical work, and the labor rates in your area. Typically, the total cost, including the immersion heater, labor, and any additional materials, may range from €200 to €500 or more. It’s advisable to contact local plumbers or heating professionals in Ireland to obtain accurate estimates based on your specific requirements.

Who fixes immersion heaters?

In Ireland, immersion heaters are typically installed and repaired by professional plumbers or heating engineers who specialize in hot water systems. These professionals have the necessary expertise, knowledge, and tools to diagnose and fix immersion heater issues. It’s recommended to contact a qualified plumber or heating engineer in your local area for immersion heater repairs in Ireland.

Why is an immersion heater not working?

Several reasons can cause an immersion heater to stop working. Some common issues in Ireland include:

  1. Faulty thermostat: The thermostat that controls the temperature of the water may be malfunctioning and needs replacement.
  2. Failed heating element: The heating element within the immersion heater may have burned out and requires replacement.
  3. Electrical issues: Problems with the electrical connection, fuse, or wiring can prevent the immersion heater from functioning correctly.
  4. Scale buildup: The buildup of limescale on the heating element can reduce its efficiency and lead to overheating or failure.

To determine the exact cause of the immersion heater not working, it’s best to consult a professional plumber or heating engineer in Ireland who can inspect the system and provide an accurate diagnosis and repair solution.

How much does it cost to run an immersion heater all day?

The cost of running an immersion heater all day in Ireland depends on several factors, including the wattage of the immersion heater, the electricity tariff, and the duration of usage. As electricity rates can vary, it’s recommended to refer to your electricity bill or contact your electricity provider to determine the specific cost per kilowatt-hour (kWh).

To calculate the cost, you can multiply the wattage of the immersion heater by the number of hours it operates in a day and then multiply that by the cost per kWh. For example, if your immersion heater is 3,000 watts (3 kW), and you run it for 10 hours a day, and the cost per kWh is €0.20, the daily cost would be:

3 kW x 10 hours x €0.20 = €6.00

Please note that this is a simplified calculation, and actual costs may vary based on factors such as the efficiency of the immersion heater and any off-peak or time-of-use electricity tariffs available.

How does an immersion heater work?

An immersion heater consists of a heating element that is immersed in the water within a hot water cylinder. When electricity is supplied to the heating element, it generates heat, which is transferred to the surrounding water, raising its temperature.

The immersion heater is controlled by a thermostat, which monitors the water temperature and switches the heating element on or off to maintain the desired temperature. When the water temperature falls below the set level, the thermostat energizes the heating element, and once the desired temperature is reached, it switches off the power to the element.

The heated water is stored in the hot water cylinder until it is needed for taps, showers, or other hot water outlets in the building.

How long should an immersion heater be on for?

The duration for which an immersion heater should be on depends on individual requirements and usage patterns. In general, it’s recommended to set the immersion heater to operate during periods when hot water is needed.

It’s common for households in Ireland to set the immersion heater to run for a couple of hours in the morning and a few hours in the evening to ensure an adequate supply of hot water throughout the day. However, the specific duration can vary based on factors such as the size of the hot water cylinder, the hot water demand of the household, and any time-of-use electricity tariffs in place.

Consulting with a professional plumber or heating engineer can help determine the optimal duration for your immersion heater based on your specific needs and circumstances.

How to change an immersion heater?

Replacing an immersion heater involves several steps. Here is a general outline of the process, but it’s important to note that specific

How long does it take for an immersion heater to heat water?

The time it takes for an immersion heater to heat water depends on several factors, including the power rating of the immersion heater, the starting temperature of the water, and the volume of water being heated. On average, it can take anywhere from 1 to 3 hours for an immersion heater to heat a full tank of water. However, this time can vary significantly based on the specific circumstances. It’s important to note that newer, more efficient immersion heaters may heat water faster than older models.

How much does an immersion heater cost?

The cost of an immersion heater can vary depending on factors such as the brand, model, capacity, and any additional features it may have. In Ireland, immersion heaters typically range in price from €50 to €300 or more. The cost may also vary depending on whether you choose a standard immersion heater or a more energy-efficient model.

How to change an immersion heater?

To change an immersion heater, it is recommended to follow these general steps:

  1. Turn off the power: Locate the circuit breaker or fuse box and turn off the power supply to the immersion heater.
  2. Drain the water: Shut off the water supply to the immersion heater and drain the water from the system. This may involve attaching a hose to the drain valve and allowing the water to empty into a suitable container or drain.
  3. Remove the old immersion heater: Disconnect the electrical wiring from the immersion heater and remove any screws or fittings securing it in place. Gently pull out the old immersion heater from the water tank.
  4. Install the new immersion heater: Insert the new immersion heater into the water tank, ensuring it is properly aligned and seated. Secure it in place using the appropriate screws or fittings.
  5. Connect the electrical wiring: Reconnect the electrical wiring to the new immersion heater, ensuring the connections are secure and follow proper electrical safety guidelines.
  6. Refill the tank: Close the drain valve and turn on the water supply to refill the tank. Check for any leaks and ensure the tank is filled to the appropriate level.
  7. Restore power: Return to the circuit breaker or fuse box and restore power to the immersion heater.

It’s important to note that the specific steps for changing an immersion heater may vary depending on the system and manufacturer. If you are unsure or unfamiliar with the process, it is recommended to consult a qualified plumber or heating engineer in Ireland for assistance.

How much does it cost to run an immersion heater?

The cost of running an immersion heater depends on several factors, including the wattage of the immersion heater, the duration of usage, and the cost of electricity. In Ireland, the average cost of electricity per kilowatt-hour (kWh) is approximately €0.20.

To calculate the cost, multiply the wattage of the immersion heater by the number of hours it operates and then multiply that by the cost per kWh. For example, if your immersion heater is 3,000 watts (3 kW), and you run it for 4 hours a day, the daily cost would be:

3 kW x 4 hours x €0.20 = €2.40

Please note that this is a simplified calculation, and actual costs may vary based on the specific wattage of your immersion heater and the electricity rates in your area.

How long does it take for an immersion heater to heat up?

The time it takes for an immersion heater to heat up depends on factors such as the power rating of the immersion heater, the starting temperature of the water, and the volume of water being heated. On average, it can take anywhere from 1 to 3 hours for an immersion heater to heat a full tank of water. However, this time can vary significantly based on the specific circumstances. It’s important to note that newer, more efficient immersion heaters may heat water faster than older models.

How much does an immersion heater cost?

The cost of an immersion heater can vary depending on factors such as the brand, model, capacity, and any additional features it may have. In Ireland, immersion heaters typically range in price from €50 to €300 or more. The cost may also vary depending on whether you choose a standard immersion heater or a more energy-efficient model.

How to use an immersion heater?

To use an immersion heater, follow these general steps:

  1. Ensure the immersion heater is properly installed and connected to a suitable hot water tank or cylinder.
  2. Ensure the water tank is filled with water to an appropriate level.
  3. Turn on the power supply to the immersion heater. This can be done by flipping the switch on the immersion heater or turning on the appropriate circuit breaker or fuse.
  4. Set the desired temperature on the thermostat, if applicable. Some immersion heaters have adjustable thermostats that allow you to control the water temperature.
  5. Allow the immersion heater to heat the water for the desired duration. The time it takes will depend on the factors mentioned earlier.
  6. Once the water reaches the desired temperature, you can useit for your intended purposes, such as taking a shower or using hot water for other needs.

Please note that these are general instructions, and it’s important to refer to the specific manufacturer’s guidelines and instructions for your particular immersion heater model.

How much does an immersion heater cost?

As mentioned earlier, the cost of an immersion heater can vary depending on several factors, including the brand, model, capacity, and additional features. In Ireland, immersion heaters typically range in price from €50 to €300 or more. The cost may also vary based on the specific requirements and preferences of the consumer.

How long do immersion heaters take to heat up?

The time required for an immersion heater to heat up water can vary depending on factors such as the power rating of the immersion heater, the starting temperature of the water, and the volume of water being heated. On average, it can take anywhere from 1 to 3 hours for an immersion heater to heat a full tank of water. However, it’s important to note that this time can vary significantly based on the specific circumstances and efficiency of the immersion heater.

How much does it cost to use an immersion heater?

The cost of using an immersion heater depends on the power rating of the immersion heater, the duration of usage, and the cost of electricity. To calculate the cost, you need to multiply the wattage of the immersion heater by the number of hours it operates and then multiply that by the cost per kilowatt-hour (kWh) of electricity.

For example, if your immersion heater has a power rating of 3,000 watts (3 kW) and you run it for 4 hours a day, and the cost per kWh of electricity is €0.20, the daily cost would be:

3 kW x 4 hours x €0.20 = €2.40

It’s important to note that electricity rates may vary, and the actual cost will depend on your specific circumstances and electricity provider.

How long does it take to heat an immersion tank?

The time required to heat an immersion tank depends on factors such as the power rating of the immersion heater, the starting temperature of the water in the tank, the volume of water, and the insulation of the tank. On average, it can take anywhere from 1 to 3 hours for an immersion heater to heat a full tank of water. However, it’s important to consider the specific circumstances and efficiency of your immersion heater.

How to fit an immersion heater?

Fitting an immersion heater typically involves the following steps:

  1. Turn off the power supply: Before starting any work, ensure that the power supply to the immersion heater is turned off. This can be done by switching off the corresponding circuit breaker or fuse.
  2. Drain the water: Shut off the water supply to the immersion heater and drain the water from the tank or cylinder. You may need to attach a hose to the drain valve and let the water empty into a suitable container or drain.
  3. Remove the old immersion heater: Disconnect the electrical wiring from the old immersion heater and remove any screws or fittings that secure it in place. Carefully remove the old immersion heater from the tank.
  4. Prepare the new immersion heater: Ensure that the new immersion heater is compatible with your system and has the correct specifications. Check the manufacturer’s instructions for any specific requirements.
  5. Install the new immersion heater: Insert the new immersion heater into the tank or cylinder, making sure it is properly aligned and seated. Secure it in place using the appropriate screws or fittings.
  6. Connect the electrical wiring: Reconnect the electrical wiring to the new immersion heater, following proper safety guidelines and ensuring secure connections.
  7. Refill the tank: Close the drain valve and turn on the water supply to refill the tank. Check for any leaks and ensure the tank is filled to the appropriate level.
  8. Restore power: Return to the circuit breaker or fuse box and turn on the power supply to the immersion heater.

It’s important to note that these steps provide a general guide, and the specific process may vary depending on the system and manufacturer’s instructions. If you are unsure or unfamiliar with the process, it is recommended to consult a qualified plumber or heating engineer for assistance.

How much does it cost to run an immersion heater?

The cost of running an immersion heater depends on factors such as the wattage of the immersion heater, the duration of usage, and the cost of electricity. To calculate the cost, multiply the wattage of the immersion heater by the number of hours it operates and then multiply that by the cost per kilowatt-hour (kWh) of electricity.

For example, if your immersion heater has a power rating of 3,000 watts (3 kW) and you run it for 4 hours a day, and the cost per kWh of electricity is €0.20, the daily cost would be:

3 kW x 4 hours x €0.20 = €2.40

Contact 24 Hour Plumber if you need Hot Water Tank Replacement. We cover all of Dublin city and county as well as the surrounding counties of Louth, Meath, Kildare, and Wicklow.