Guide to the Best Home Heating Systems for Houses in Ireland for 2024

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In Ireland, a reliable home heating system isn’t just a luxury – it’s a necessity. Our damp, chilly climate means we’re reaching for the thermostat most of the year. Irish homes use a mix of heating systems, ranging from traditional gas and oil boilers to modern heat pumps and solar water heaters. Installation costs vary widely, from €1,000 to €10,000 or more, depending on the type and size of the system chosen. However, heat pumps are gaining popularity, offering up to 50% reduction in heating bills compared to gas boilers. Let’s dive deeper.

Irish Home Heating Statistics & Trends

  • As of 2022, 60% of Irish homes use gas heating, 20% use oil, 10% use electricity, 7% use solid fuel, and 3% use renewable sources (including heat pumps).
  • The Irish government aims to install 400,000 heat pumps in existing homes by 2030.
  • A target of retrofitting 500,000 homes to a Building Energy Rating (BER) of B2 or better by 2030.
  • SEAI grants have led to a 53% increase in heat pump installations from 2018 to 2019.
  • 35% of Irish homeowners considering switching to renewable heating systems in the next 5 years.
  • The average cost of a heat pump installation decreased by 15% between 2018 and 2022 due to increased competition and improved technology.

What Types of Home Heating Systems Are Available in Ireland?

Homeowners have a plenty of heating systems to choose from, each offering unique benefits and efficiencies. This guide explores the most popular options available on the market:

  1. Gas Central Heating
  2. Oil Central Heating
  3. Electric Heating
  4. Heat Pumps
  5. Solid Fuel Heating
  6. Renewable Energy Systems
  7. Underfloor Heating
  8. Hybrid Heating Systems

1. Gas Central Heating

Gas central heating is the most common system in Ireland, used in approximately 60% of homes. Gas boilers use natural gas to power a condensing boiler that heats water, which is then circulated through radiators. To install a gas boiler, you’ll need access to the gas network and a contract with a gas supplier. Condensing boilers are more efficient, capturing heat from the flue gases, with some models achieving up to 99% efficiency.

Advantages

The good bits? Gas is usually cheaper than oil or electricity, and modern gas boilers are quite efficient. They heat up your home quickly and give you hot water on demand. Plus, you don’t need to worry about running out of fuel or storing it.

Disadvantages

On the downside, you need to be connected to the gas network, which isn’t available everywhere in Ireland. There’s also the installation cost to consider if you’re switching from another system. While gas is cleaner than oil, it’s still a fossil fuel, so it’s not the greenest option out there.

Efficiency and Cost

Efficiency-wise, newer gas boilers can be up to 90% efficient, meaning most of the energy from the gas gets turned into heat for your home. The latest models are ‘condensing’ boilers, which capture and use heat that would otherwise be wasted. Cost-wise, gas tends to be cheaper than oil or electricity for heating. Boiler installation ranges from €2,500 to €6,000.

Gas Boilers Used in Ireland:

Conventional Boilers

Also known as regular or traditional boilers, these systems:

  • Have a separate hot water cylinder and cold water storage tank
  • Are ideal for homes with multiple bathrooms
  • Can provide a good flow of hot water to several taps at once
  • Require more space due to the separate components

Combi Boilers

Combination or ‘combi’ boilers are popular in many Irish homes because:

  • They provide hot water on demand without a separate tank
  • They’re compact, saving space in your home
  • They’re generally more energy-efficient
  • They’re ideal for smaller homes or flats with one bathroom

However, they may struggle if multiple hot water taps are used simultaneously.

System Boilers

System boilers offer a middle ground between conventional and combi boilers:

  • They have a hot water cylinder but no cold water tank
  • They’re suitable for homes with more than one bathroom
  • They can provide a good flow of hot water to multiple taps
  • They’re more compact than conventional boilers but less so than combis

2. Oil Central Heating

Oil central heating is a common choice in rural Ireland, where mains gas isn’t available. Oil-fired boilers work similarly to gas boilers, heating water by burning oil that’s stored in a tank on your property.

How It Works

An oil boiler heats water, which then circulates through your radiators. You’ll need an oil tank outside your house, usually in the garden or yard. A tanker delivers oil to fill up your tank when you need it.

Advantages

  • Efficient: Modern oil boilers can be up to 95% efficient.
  • Powerful: Oil provides a lot of heat, warming your home quickly.
  • Flexible: You can shop around for the best oil prices and buy when it’s cheapest.

Disadvantages

  • Price fluctuations: Oil prices can change a lot, making budgeting tricky.
  • Upfront costs: You need to buy the tank and boiler, which can be pricey.
  • Environmental impact: Oil isn’t as green as some other options.
  • Maintenance: You need to remember to order oil and get your boiler serviced regularly.

Cost Considerations

While oil can be cheaper than electricity, it’s usually pricier than gas. The cost of filling your tank can be high, but you can spread this out by topping up more often. Some suppliers offer budget plans to help manage costs. Boiler installation ranges from €3,000 to €7,000.

3. Electric Heating

Electricity is often used for heating in smaller homes or those without access to other fuel sources. However, it tends to be more expensive than gas or oil. Electric radiators work like traditional radiators but use electricity instead of hot water. They heat up quickly and can be controlled individually.

Advantages

  1. Energy Efficient: Electric radiators are 100% efficient at point of use, converting all electricity into heat.
  2. Quick Heating: They heat up faster than traditional central heating systems, providing warmth quickly.
  3. Easy Installation: No complex pipe connections needed, making them simple to install and replace.
  4. Precise Control: Individual thermostats allow for accurate temperature regulation in each room.
  5. Low Maintenance: Require minimal upkeep compared to gas or oil systems.
  6. Safe: No risk of carbon monoxide leaks or gas-related hazards.

Disadvantages

  1. Running Costs: Electricity can be more expensive than gas, potentially leading to higher energy bills.
  2. Slower Heating for Large Spaces: May take longer to heat larger areas compared to central heating systems.
  3. Initial Cost: Can have a higher upfront cost compared to some traditional heating options.
  4. Dependent on Electricity: Won’t work during power outages unless you have a backup power source.
  5. Potential Circuit Overload: Multiple radiators might strain your home’s electrical system.
  6. Less Effective in Poorly Insulated Homes: High running costs in homes with poor insulation.

Efficiency and Running Costs

Electric heaters are 100% efficient at point of use – all the electricity is turned into heat. However, electricity is usually the most expensive fuel for heating. The running costs can be high, especially if you’re not on a special tariff.To keep costs down, it’s worth looking into:

  • Night rate electricity tariffs
  • Smart controls to manage your heating
  • Improving your home’s insulation

Remember, while electric heating systems are often cheaper to install, the running costs can add up. It’s worth doing the sums to see if it’s the right choice for your home and budget.

4. Heat Pumps

Heat pumps are gaining popularity in Ireland due to their energy efficiency and lower environmental impact compared to traditional heating systems. They work by extracting heat from external sources—air, ground, or water—and transferring it into your home. This process makes them an excellent choice for those looking to reduce their carbon footprint and energy bills. They can achieve 300-400% efficiency.

Air Source Heat Pumps

Air source heat pumps (ASHPs) absorb heat from the outside air, even in cold temperatures, and use that heat to warm your home. They consist of an outdoor unit that captures heat and an indoor unit that distributes it through your home.

Advantages

  • Cost-Effective: ASHPs can significantly reduce heating costs, especially when compared to oil or electric heating.
  • Low Maintenance: These systems require minimal maintenance compared to traditional boilers.
  • Dual Functionality: Many ASHPs can also provide hot water, making them a versatile option.
  • Grants Available: The SEAI offers grants up to €6,500 for installing ASHPs, which can help offset initial costs.

Disadvantages

  • Initial Cost: The upfront installation cost can be high, often ranging from €8,000 to €15,000.
  • Efficiency in Cold Weather: While they work well in mild climates, their efficiency can drop in very cold conditions. You may need a backup heating system during harsh winters.
  • Radiator Upgrades: If your home has traditional radiators, you might need to upgrade them or install underfloor heating for optimal performance.

Ground Source Heat Pumps

Ground source heat pumps (GSHPs) are another efficient option. They extract heat from the ground using a series of pipes buried in your garden. GSHPs use a loop system filled with a fluid that absorbs heat from the ground. This fluid is then pumped into the house where it transfers its heat to the heating system.

Advantages

  • High Efficiency: GSHPs are generally more efficient than ASHPs and can maintain performance even in colder weather.
  • Long Lifespan: With proper installation and maintenance, these systems can last over 20 years.
  • Low Running Costs: Once installed, GSHPs have lower running costs compared to fossil fuel systems.

Disadvantages

  • Installation Cost: The installation is more expensive than ASHPs, often exceeding €15,000 due to the need for extensive ground works.
  • Space Requirements: You need a substantial garden area for the ground loops, making them unsuitable for smaller properties.
  • Disruptive Installation: The installation process can be disruptive as it involves digging up your garden.

SEAI Grants

The SEAI provides financial incentives to encourage homeowners to switch to heat pumps. Grants up to €6,500 are available for both air source and ground source heat pump installations. This funding can significantly reduce the initial investment required.

5. Solid Fuel Heating

Solid fuel heating remains a traditional choice for many Irish households. It includes systems that burn wood, coal, or peat. While these systems provide warmth and comfort, they come with environmental considerations that homeowners should be aware of.

Wood-Burning Stoves

Wood-burning stoves are popular for their ability to create a cosy atmosphere while providing efficient heating. These stoves burn seasoned wood logs or pellets to generate heat. The design allows for efficient combustion and minimal smoke emissions when used correctly.

Advantages

  • Aesthetic Appeal: Wood stoves add character and warmth to any room.
  • Cost-effective Fuel: If you have access to free or low-cost wood supplies, this can be a very economical option.
  • Independence from Electricity: Unlike electric systems, wood stoves do not rely on electricity to operate.

Disadvantages

  • Fuel Storage: You’ll need space for storing firewood, which can be bulky and requires protection from the elements.
  • Regular Maintenance: Stoves require regular cleaning of ash and soot buildup to maintain efficiency and safety.
  • Air Quality Concerns: Burning wood releases particulate matter that can contribute to air pollution if not managed properly.

Multi-Fuel Stoves

Multi-fuel stoves offer flexibility by allowing you to burn various solid fuels such as wood, coal, or peat.

Advantages

  • Versatile Fuel Options: You can choose the most cost-effective fuel available at any time.
  • Higher Efficiency: These stoves often have better efficiency ratings than open fires.
  • Heating Variety: They provide ample heat output suitable for larger spaces.

Disadvantages

  • Environmental Impact: Some fuels like coal contribute significantly to air pollution; it’s essential to choose cleaner options.
  • Installation Costs: Depending on the type of stove and flue system required, installation costs can vary widely.

Environmental Considerations

The Irish government is tightening regulations on solid fuels due to their environmental impact. From 2022 onwards, the sale of smoky coal is banned nationwide. Peat and wet wood are also being phased out as part of efforts to improve air quality.If you’re considering solid fuel heating:

  • Look for eco-design stoves that meet new efficiency standards.
  • Use seasoned or kiln-dried wood with low moisture content for cleaner burning.
  • Explore smokeless fuel options if you’re concerned about emissions.

Efficiency: 70-90% for modern stoves, up to 95% for biomass boilers.Cost: €2,000 to €5,000 for stoves, €10,000 to €20,000 for biomass boilers.

6. Renewable Energy Systems

As Ireland moves towards more sustainable energy solutions, renewable heating options are becoming increasingly popular. These systems not only help reduce carbon footprints but can also lead to significant savings on energy bills in the long run.

Solar Thermal Systems

Solar thermal systems use energy from the sun to heat water for your home. Solar panels, usually mounted on the roof, contain a fluid that heats up when exposed to sunlight. This heated fluid is then pumped through a coil in your hot water cylinder, warming the water inside.

Advantages

  • Free Energy Source: Once installed, the sun’s energy is free.
  • Reduced Bills: Can provide up to 60% of your annual hot water needs.
  • Low Maintenance: Solar thermal systems require little upkeep.
  • SEAI Grants: Eligible for grants up to €1,200.

Disadvantages

  • Initial Cost: Installation can be expensive, typically €4,000-€6,000.
  • Weather Dependent: Less effective during cloudy or short winter days.
  • Supplementary System Needed: You’ll still need a backup heating system.

Biomass Boilers

Biomass boilers work similarly to conventional boilers but burn wood pellets, chips, or logs to provide heating and hot water instead of gas or oil. The wood is burned in a combustion chamber, heating water that’s then circulated through your home’s heating system.

Advantages

  • Carbon Neutral: The CO2 released when burning wood is offset by the CO2 absorbed during the tree’s growth.
  • Renewable Resource: Wood can be sustainably sourced.
  • SEAI Grants: Eligible for grants up to €5,000.

Disadvantages

  • Space Requirements: You’ll need room for the boiler and fuel storage.
  • Regular Maintenance: Ash needs to be removed regularly.
  • Fuel Costs: While often cheaper than oil, wood fuel isn’t free.

Integration with Other Heating Systems

Many homeowners in Ireland are opting for hybrid systems, combining renewable options with traditional heating methods. For example:

  • Solar Thermal with Gas Boiler: Solar provides hot water in summer, while the gas boiler takes over in winter.
  • Heat Pump with Biomass Stove: Heat pump for general heating, biomass stove for extra warmth on cold days.

These integrated systems can offer the best of both worlds: eco-friendly heating with the reliability of traditional systems.

7. Underfloor Heating

Underfloor heating is gaining popularity in Ireland, especially in new builds and home renovations. It provides an even, comfortable heat and can be more efficient than traditional radiators.

How It Works

Underfloor heating systems circulate warm water through a network of pipes laid under your floor, or use electric mats to generate heat.

Types of Underfloor Heating

  1. Wet Systems: Use warm water circulated through pipes.
  2. Dry Systems: Use electric heating elements.

Advantages

  • Even Heat Distribution: No cold spots in the room.
  • Energy Efficient: Can be up to 25% more efficient than radiators.
  • Space Saving: No radiators means more usable wall space.
  • Comfortable: Provides a consistent, radiant heat from the ground up.
  • Suitable for Various Floor Types: Can be installed under tile, stone, wood, and even carpet.

Disadvantages

  • Installation Cost: Can be expensive to install, especially in existing buildings.
  • Heating Time: Takes longer to heat up than traditional radiators.
  • Floor Height: May raise floor levels, which can be an issue in renovations.

Installation Considerations

  • New Builds: Easier and more cost-effective to install during construction.
  • Renovations: Can be installed, but may require raising floor levels.
  • Insulation: Proper insulation is crucial for efficiency.
  • Control Systems: Modern systems offer room-by-room temperature control.

Cost Implications

  • Installation: €18-€26 per square metre on average.
  • Running Costs: Can be lower than traditional systems, especially when paired with a heat pump.

Compatibility with Heat Sources

Underfloor heating works well with various heat sources:

  • Heat Pumps: Ideal pairing as both work at lower temperatures.
  • Gas/Oil Boilers: Can be used but may require a mixing valve to lower water temperature.
  • Biomass Boilers: Compatible, but system design is crucial for efficiency.

Underfloor heating is particularly popular in Irish homes with open-plan layouts and in properties aiming for high energy efficiency ratings. While the initial investment can be significant, many homeowners find the comfort and potential long-term savings worthwhile.

8. Hybrid Heating Systems

Hybrid heating systems combine two or more heating technologies to optimise efficiency and comfort. This approach allows homeowners to take advantage of the strengths of different systems while mitigating their weaknesses.

How Hybrid Systems Work

A typical hybrid system might integrate a heat pump with a traditional gas or oil boiler. The heat pump handles the majority of heating needs, especially during milder weather, while the boiler kicks in during colder spells when extra heat is required.

Advantages

  • Increased Efficiency: By using the most efficient source of heat at any given time, hybrid systems can significantly reduce energy consumption.
  • Cost Savings: Homeowners can save on fuel costs by using a heat pump when electricity prices are low and switching to gas or oil when necessary.
  • Flexibility: Hybrid systems can adapt to changing energy prices and availability, providing a reliable heating solution year-round.
  • Environmental Benefits: By reducing reliance on fossil fuels, hybrid systems can lower your carbon footprint.

Disadvantages

  • Complexity: Installing a hybrid system can be more complicated than a single-source system, requiring careful planning and integration.
  • Higher Initial Costs: The upfront investment may be higher due to the need for multiple systems and controls.
  • Maintenance: More components mean more maintenance is required to keep everything running smoothly.

Considerations for Installation

When considering a hybrid heating system, it’s essential to:

  • Assess Your Home’s Needs: Evaluate your heating requirements based on size, insulation, and existing systems.
  • Consult Professionals: Work with experienced installers who understand how to integrate different technologies effectively.
  • Look for Incentives: Check for government grants or incentives that may be available for installing energy-efficient systems.

Hybrid heating systems are an excellent option for homeowners looking to maximise efficiency while maintaining comfort. They offer flexibility and adaptability in an ever-changing energy landscape.

Factors to Consider When Choosing a Heating System

Selecting the right heating system for your home involves several key considerations. Understanding these factors will help you make an informed decision that suits your needs and budget.

Home Size and Insulation

  • Size Matters: Larger homes may require more powerful heating solutions, while smaller spaces can often be efficiently heated with less intensive systems.
  • Insulation Quality: Well-insulated homes retain heat better, allowing smaller or less expensive systems to perform adequately. Consider upgrading insulation before investing in a new heating system.

Energy Efficiency

  • Efficiency Ratings: Look for systems with high energy efficiency ratings (e.g., A-rated appliances). These will save you money on bills in the long run.
  • Renewable Options: Consider renewable energy sources like heat pumps or solar thermal systems, which can significantly reduce your carbon footprint.

Installation and Running Costs

  • Upfront Costs: Assess the initial investment required for installation. Some systems may be cheaper to install but more expensive to run.
  • Running Costs: Research fuel prices and potential savings over time. Factor in maintenance costs as well.

Environmental Impact

  • Fossil Fuels vs. Renewables: Consider the environmental impact of your chosen heating method. Renewable options are generally better for the environment.
  • Government Regulations: Stay informed about regulations regarding emissions and fuel usage, as these may affect your choices.

Lifestyle Needs

  • Comfort Preferences: Think about how quickly you want your home to heat up and whether you prefer even heat distribution (like underfloor heating).
  • Control Systems: Smart thermostats and zoning options allow you to control temperatures in different areas of your home, enhancing comfort and efficiency.

Home Heating Government Grants and Incentives

Sustainable Energy Authority of Ireland (SEAI) grants are available for certain types, such as solar panels and heat pumps, though grants are no longer offered for gas or oil boilers apart from the Heating Controls Grant to improve boiler efficiency indirectly.

  • SEAI Heat Pump Grant: Up to €6,500
  • The SEAI offers a €200 grant towards the technical assessment of homes built before 2007, which is required for the heat pump grant application
  • SEAI Solar PV Grant: Up to €2,400
  • SEAI Solar Water Heating Grant: €1,200
  • Better Energy Homes Scheme: Various grants for insulation and heating controls

Grant offers are typically valid for eight months from the date of approval. Post-installation, a BER (Building Energy Rating) assessment is required before the grant can be processed.

House Heating Hacks to Save Money on Bills

Want to cut your energy bills? Try these clever tricks to keep your home warm without breaking the bank.

Blackout Curtains: A Secret Weapon

Thick curtains are brilliant for keeping heat in during winter nights. In summer, they’ll stop your house from turning into an oven during the day. It’s like having a thermos for your windows!

Let the Sun Do Some Work

In winter, throw open those curtains when the sun’s out. Free heating, courtesy of Mother Nature! Just remember to close them again when it gets dark to trap all that lovely warmth.

Radiator Reflectors: Bounce That Heat Back

These cheap, easy-to-install panels are like mirrors for heat. They bounce warmth back into the room instead of letting your walls soak it up. It’s a small change that can make a big difference to your comfort and your wallet.

Smart Thermostats: Your New Best Friend

These clever gadgets learn your habits and adjust the heating automatically. Some even use your phone’s location to turn the heat on when you’re heading home. It’s like having a personal heating assistant.

Bleed Your Radiators: No Tools Required

If your radiators are cold at the top but warm at the bottom, they need bleeding. It’s dead easy to do yourself with a radiator key, and it’ll help your heating work much more efficiently.

Conclusion

Choosing the right heating system is crucial for comfort, cost-effectiveness, and environmental responsibility. By considering factors like home size, insulation quality, energy efficiency, installation costs, and lifestyle needs, you can select a system that meets your requirements. Consulting with professionals can also provide valuable insights tailored to your specific situation. With the right choice, you can enjoy a warm home while minimising energy bills and your carbon footprint.

Author

Picture of Max
Max
Max is the co-founder and main author at RenovationDublin.ie. With over a decade of experience in the home improvement industry, he has helped scale some of Ireland's leading home remodel & construction companies, enhancing their online brand visibility.

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