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Last updated: 1 May 2025

Air Source Heat Pumps in Northern Ireland: Costs & Savings

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  • Air source heat pumps (ASHPs) are a highly worthy energy investment. Up to three times more efficient than a gas boiler, they work by extracting and transferring heat from the outside air to be used as functional heat within your home.
  • On average, a standard air-to-air ASHP can cost between £4,000 - £9,500, with air-to-water ASHPs costing between £8,000 - £16,500
  • When replacing an old gas boiler, air source heat pumps can bring you an impressive £550 in annual energy bill savings. When replacing old outdated electric storage heaters, you can save up to a staggering {renew-ashp-oldelectric-savings-est-ni} every year.
  • While there are no direct grant schemes for air source heat pumps in Northern Ireland, there is a 0% VAT on the purchase of ASHPs and a very limited number of air source heat pump coverages offered by NISEP.

Air source heat pumps (ASHPs) are a revolutionary form of renewable energy. By drawing heat directly from the outside air, these innovative systems can heat your home or even provide hot water without the need to burn any fuel. In the best of cases, these systems can enable up to {renew-ashp-oldelectric-savings-est-ni} in annual energy bill savings while significantly slashing domestic carbon emissions. In the energy frontier, ASHPs stand out as a truly renewable option.

According to the National Energy Action (NEA), a staggering 68% of Northern Irish homes rely on oil-fuel boilers for their heating as of 2024. In comparison, this figure sits at a measly 4% in England. Air source heat pumps provide a great opportunity to transition away from harmful heating methods, leading to huge financial savings and reduced carbon footprints for the entire housing stock. This complete guide will give you all the vital information you need about air-source heat pumps, including costs, savings, benefits, and much more.

Want an air source heat pump for your home? Let WhatCost find the best bargains for you. Instead of spending countless hours on websites and phone calls for the right installer, spend just 30 seconds filling out our online form to receive 3 free home-tailored quotes from industry professionals. No costs, no obligations. Just click below and let the bargains come to you!

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Do heat pumps work in Northern Ireland?

Air source heat pumps (ASHPs), much like their counterpart ground source heat pumps (GSHPs), are completely functional in Northern Ireland. As their names suggest, ASHPs draw heat from the air while ground source heat pumps draw heat from the ground, both converting it to heat to be used in the home. 

In terms of air source heat pump efficiency in Northern Ireland, these unique systems stand out due to their outstanding efficiency capabilities of up to 400%. In other words, this means they provide 4 times the heating or cooling per unit of electricity used. The efficiency of an energy system is measured by the Coefficient of Performance (COP), in which a higher value indicates higher efficiency.  

In addition, Northern Ireland has a softer Atlantic climate in comparison to more northern countries, meaning the base temperature is rarely below zero degrees Celsius in the winter months. This ensures that your air source heat pump will continue to work at a high efficiency. The same is true for heat pumps in Scotland.

Air source heat pump costs in Northern Ireland

On average, air source heat pump prices in Northern Ireland range from as little as £4,000 to a much higher £16,500, depending on factors such as home size, heat pump type, location, installation complexity and much more. 

The most significant impact on your cost will relate to the type you opt for: an air to air heat pump, or an air to water heat pump. The former converts heat from outside air into hot air inside your home, and it works the same for cooling. The latter converts heat from outside air into hot water to be used in your home and tends to be much more expensive. Here’s a more thorough look at the differing average costs per system type:

Costs of heat pumps in Northern Ireland
Heat pump type Cost (incl. installation) Running costs
Air to air £4,000 – £9,500 £990 - £2,000
Air to water £8,000 – £16,500 £760 - £1,475

In comparison, a ground source heat pump cost tends to be much higher. For the best understanding of what costs you can expect, it's recommended to work with a professional installer who can assess your property and tailor the best course of action for your needs. 

Luckily, WhatCost can save you countless hours in research and vetting. All it takes is 30 seconds to fill out our simple intake form, and we’ll send you up to 3 free home-tailored quotes for air-source heat pumps. No costs, no obligations. Click below to begin!

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Air source heat pump grants in Northern Ireland

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Unfortunately, there are no direct heat pump grant schemes in Northern Ireland for air-source heat pumps at this moment that are widely accessible or long-term, however, there are some key incentives in place that make the investment very viable. 

  • 0% VAT: Northern Ireland introduced wide-ranging VAT reductions to renewable and efficient energy systems. Air source heat pump purchases have a 0% VAT on them, making them much more affordable to purchase than ever before. 
  • NISEP Coverage: The Northern Ireland Sustainable Energy Program (NISEP) offers a very limited number of air source heat pump installation coverages of up to 50% for qualifying homes. This prioritises homes outside of the gas network.

It’s crucial to note that Northern Ireland has incentives that differ drastically from those offered for heat pumps in the UK. For example, heat pump installation in the UK is widely supported by several grant scheme options, while there is no direct heat pump grant in Northern Ireland. It’s highly recommended to consult with your relevant authorities and energy companies for the best course of action to meet your needs.  

Air source heat pump savings in Northern Ireland

Air source heat pumps are most renowned for the huge savings they can bring to homes. For example, replacing an outdated electric storage heater can save up to £1,300 every year. Most standard homes replacing outdated gas or LPG boilers can expect savings more around £550 - {renew-ashp-glpgboiler-savings-est-ni} every year. Your final cost and savings may vary based on the heat pump manufacturers you go for.  

In Northern Ireland, where a significant portion of the housing stock still relies on oil-fueled boilers, a transition to air-source heat pumps can be a great help to savings. Here’s a breakdown of what savings to expect per system replacement to an air source heat pump:

Annual savings per heating system transition to an ASHP
Heating system Annual savings
Old (G-rated) gas boiler £290
New (A-rated) gas boiler -£3
Old electric storage heaters £1,200
New electric storage heaters £700
Old (G-rated) oil boiler £280
New (A-rated) oil boiler -£55
Old (G-rated) LPG boiler £650
New (A-rated) LPG boiler £260
Coal £650

These values are obtained via the Energy Saving Trust UK and are accurate as of November 2024. We make sure to conduct quarterly checks to ensure that the values we provide are as up-to-date as possible.

Heat pumps in Northern Ireland: Advantages & disadvantages

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Heat pumps are innovative energy systems that bring with them a whole host of advantages. From environmental consciousness to financial savings, here’s a breakdown of the key perks you can enjoy with an air source heat pump system:

  • Energy efficient: Air source heat pumps boast up to 400% energy efficiency, meaning they produce four times the energy output for one unit of electricity in comparison to most other heating systems. Air source heat pumps and solar panels can even be combined for an entirely autonomous system of free energy.
  • All-season solution: Air source heat pumps can both heat and cool your property on demand, making them a perfect all-season energy solution for your home, especially if you're based in an off-grid property. 
  • Simple installation: Installing an air source heat pump is relatively simple, and only takes a few days to complete, thus keeping home disruption to a minimum. You can even get a heat pump for flats and apartments!
  • Little maintenance: Air source heat pumps don't demand a lot of maintenance beyond occasional check-ups every 2 - 3 years to ensure proper function.
  • High endurance: Air source heat pumps have an impressive lifespan, ranging upwards of 10 - 15 years. You can ensure optimal performance throughout their operational lifetime with proper care and maintenance.
  • Low risks: Due to being powered by electricity, air source heat pumps do not require highly combustible fuels to be used on-site, such as oil and gas. This can significantly reduce the risk of life-threatening accidents from occurring.

However, like any upgrade, some disadvantages are worth considering before making your decision, most notably regarding price and procurement. Here are some key pitfalls to consider when choosing an air-source heat pump system:

  • High upfront costs: Air source heat pumps are certainly not cheap, costing around £4,000 - £16,500 based on factors such as your home size, chosen heat pump type, heat pump size and more. For some households, this initial investment might be a deterrent.
  • Limited grant support: Unfortunately, there are no active grant schemes in Northern Ireland that provide wide-spanning assistance for air source heat pump transitions. The NISEP scheme provides a very limited batch of installations, but on high demand.
  • Home suitability: Like most energy systems, the effective function of an air source heat pump will also hinge on a home's insulation efficiency. A heat pump may not be sufficient alone to make a major difference in the energy efficiency of a home.

With all the pros and cons in consideration, air source heat pumps still emerge as a worthy investment in Northern Ireland, capable of delivering unparalleled energy efficiency and savings on annual bills.

Is a heat pump in Northern Ireland worth it?

Unrivalled in their energy efficiency, air source heat pumps stand out as one of the most effective long-term energy solutions for any home in Northern Ireland, especially those that are off-grid. They can bring with them the potential for massive savings on your energy bills, significant reductions to your domestic carbon footprint, and an all-season temperature solution for your home that can last many years.

While air source heat pumps in the UK are heavily subsidised, unfortunately, Northern Ireland lacks a wide-ranging grant scheme. Still, a 0% VAT on air source heat pump purchases and potential installation support via NISEP make it a worthwhile investment. 

However, deciding to get an air-source heat pump remains the easy step. The next step is to get multiple quotes and secure a professional, accredited installer at a good price. With the sea of options out there, many prospective customers find themselves stuck in an endless cycle of researching and vetting their options. WhatCost can handle the pesky work for you. 

By simply filling out our 30-second online intake form, you can receive up to 3 free home-tailored quotes from our nationwide network of pre-vetted professionals at absolutely no charge or obligations. Simply click below to begin and let the bargains come to you! 

Get your best deal
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