Heat Pump Cost in Ireland: What You Actually Pay

An air to water heat pump is quoted at roughly €13,000 to €17,000 installed in Ireland, and SEAI now puts its grant bundle at up to €14,500 for a house. On paper that leaves very little to pay. The number that actually settles it is the cost of getting an older house down to SEAI's heat-loss limit first, and no state body publishes that one. A TD asked for it in the Dáil in April 2026 and was told the data sits with SEAI. So the honest answer to "what does a heat pump cost" splits in two: a well-insulated house has a small net bill, and a draughty one has a fabric project attached that dwarfs the heat pump.

What an Installed Heat Pump Costs

There is no official figure. Every number you will read online is somebody's commercial estimate, so it helps to know that going in. The Department of Climate, Energy and the Environment has been asked twice for the average cost of installing a heat pump by SEAI scheme, in October 2025 and again in December 2025. Both times it answered that the data is an operational matter for SEAI and pointed the Deputy at an email address.

The contrast is sharp, because the same Department does publish average solar PV costs when asked. The figures come from what installers enter on grant applications, excluding the grant itself:

So the state can produce this data when it chooses to. For heat pumps it has not. What you get instead is installer pricing, and the range quoted most often in Ireland is €13,000 to €17,000 including installation for air to water, published by NRG Panel. Use it to read your own quotes, not as a market average. Worth knowing too: the two websites carrying that range belong to the same merged group, so it is one source wearing two hats. Ground and water source systems sit higher because of the groundwork.

One cost that genuinely fell is tax. Revenue confirms that since 1 January 2025 the supply and installation of a heat pump heating system is taxable at the second reduced VAT rate of 9%. Before that it was the 13.5% reduced rate, subject to the two-thirds rule, which pushed many jobs to 23%. On a €15,000 job the move from 23% to 9% is worth well over €1,500.

The Grant: Four Parts, Not One

Most people talk about the heat pump grant as one number, then get a smaller cheque than they expected. It is a bundle, and every part of it has its own test. The heat pump grant guide covers the paperwork. This is the money.

Three constraints trip people up. You cannot receive a grant larger than the total cost of works, so a cheap install caps its own grant. Your home needs an MPRN and must have been built and occupied before 2021 to qualify at all. And if you already have a heat pump that was never grant-aided, replacing it is capped at €6,500 for a house or €4,500 for an apartment, with no Renewable Heat Bonus, no central heating grant and no scrappage, because you are not decarbonising anything.

The Net Sum, Three Ways

Take a €15,000 quote on a house and run it through the three grant positions most homeowners land in:

Those are SEAI's own figures put through simple arithmetic, and the top row is the one that gets screenshotted. Read it carefully. It assumes you clear all four components, that your quote actually covers the radiator work the grant is paying for, and that the house already passes the heat-loss test. Change the last assumption and the whole table stops being useful.

The Cost Nobody Publishes

A heat pump only works properly in a house that holds its heat, so SEAI gates the grant on heat loss rather than on good intentions. The rule splits on build year:

• Built from 2007 onwards. No technical assessment needed. You sign a self-declaration form and fabric upgrades are not mandatory.
• Built before 2007. You need a technical assessment unless you hold a valid BER showing a Heat Loss Indicator of 2.3 W/(K.m²) or lower. A €200 grant covers part of the assessment.

If the assessment says your HLI is above 2.3, the assessor tells you what would bring it down, and that work is yours to fund out of the insulation grants and your own pocket. In April 2026 a TD asked the Minister exactly this: how many applicants had been refused on HLI grounds, and what the average cost burden was of getting a pre-2007 dwelling to the threshold, assessments included. The answer acknowledged that "upfront costs and ancillary works can be seen as obstacles" and that heat pumps are "one of the most challenging technologies to implement at scale", then referred the specific data back to SEAI. No figure was given.

That silence is the single biggest variable in what a heat pump costs you in Ireland, and it is why two neighbours get quotes €20,000 apart. SEAI is at least testing the boundary: it runs a Residential Heat Pump and Heat Loss Indicator Research Pilot and an R290 high-temperature heat pump pilot, both aimed at homes with higher heat loss than the grant currently allows. Until those change the rules, assume a pre-2007 house is a fabric job with a heat pump at the end of it, and price it that way. A current BER is the cheapest way to find out where you stand. If a full upgrade is on the cards, the One Stop Shop route deducts grants from the price upfront instead of refunding them later, and households on certain social protection payments should look at the Warmer Homes Scheme before paying for anything.

Running Cost Against Oil, on SEAI's Own Numbers

This is where heat pumps are usually sold with a vague promise, so here are the published figures instead. SEAI's Domestic Fuel Cost Comparison, edition dated 1 July 2026, converts every heating fuel into cents per kWh of useful heat delivered. It also tabulates heat pumps directly, by Seasonal Performance Factor: the ratio of heat out to electricity in across a whole heating season.

The heat pump rows use electricity Band DD, 34.38c per kWh, covering homes using 5,000 to 15,000 kWh a year. SEAI notes that is where most heat-pump homes sit. Kerosene is €1.28 a litre at schedule prices and €1.19 discounted in the same edition.

Run the arithmetic on a round 10,000 kWh of heat. At SPF 3 that is €1,146 of electricity against €1,575 of kerosene at schedule prices, so €429 saved, about 27%. Against discounted oil the saving falls to €318. And at SPF 2.5, the bottom of SEAI's own range for air to water, a heat pump costs €1,375 against €1,302 for a 90%-efficient boiler burning discounted kerosene. On those numbers the heat pump loses.

Two caveats on the table, both from SEAI's own notes. The electricity and gas prices in that edition represent the period 1 July to 31 December 2025 and are refreshed only every six months, so they lag the market and miss the 2026 price increases. And unit prices exclude standing charges throughout. The night rate in the same table is 15.42c, which takes a heat pump at SPF 3 down to 5.14c per useful kWh, though that needs a second meter and carries its own standing charge.

What Solar Does to the Sum

A heat pump turns one unit of electricity into roughly three of heat. That makes it the best thing in an Irish house for turning cheap electricity into something useful, and it is the real reason the two get sold together. Much stronger argument than the grant stacking, for what it is worth.

Work it in cents. A kWh of solar you self-consume saves an import at 34.38c on SEAI's Band DD figure. The same kWh exported earns about 19.5c on the best standard Clean Export Guarantee rate, so keeping it is worth nearly 15c more than selling it. Push it through a heat pump running at SPF 3 and it becomes 3 kWh of heat that would otherwise have cost about 47c of kerosene. Nothing else in a house does that to a surplus unit.

The honest limit is the calendar. Irish solar output is at its lowest in the months your heating demand is highest, so this is not a January story. Where it pays is the shoulder seasons and year-round hot water, and that is also where a battery or a hot water diverter earns its keep. You can claim both grants on the same house: the heat pump and solar grant stack sets out how they sit together and what the combined timeline looks like. For the solar half of the bill, what solar panels cost in Ireland has current system prices.

Reading a Heat Pump Quote

Five things decide whether the headline price means anything.

1. Is the contractor SEAI registered for heat pumps? If not, no grant, whatever else they tell you. Registration is for the specific type of work.
2. What SPF does the design achieve, and into what emitters? A quote with no design output behind it is a guess with a price attached.
3. Are radiator or underfloor works priced in? The €2,000 central heating grant only pays where the design requires them, so the works and the grant have to match.
4. Does the hot water side stack up? SEAI's requirement is that the system meets all your space heating and at least 80% of your hot water, and in practice usually all of it.
5. Who carries the paperwork? You have 30 days to accept the offer, eight months to draw it down, and you need a post-works BER before payment. Payment then takes four to six weeks, and more than €10,000 of grants in one calendar year needs a tax clearance certificate.

Demand has roughly doubled, so lead times are real: SEAI recorded 29,000 applications in the first quarter of 2026 alone, close to twice the previous year, with heat pump installations up about 19% year on year. Close to 28,000 heat pumps went in between 2019 and 2025 across SEAI and local authority schemes, out of more than 257,500 home energy upgrades funded by over €1.7 billion of capital. Budget 2026 put a record €640 million behind the programme. You are queueing with everyone else.

Frequently Asked Questions

How much does a heat pump cost in Ireland in 2026?

Air to water heat pumps are typically quoted at €13,000 to €17,000 including installation, based on pricing published by SEAI-registered installer NRG Panel. No Irish state body publishes an average installed cost. With the full SEAI grant bundle of up to €14,500, a €15,000 quote on a house that already meets the heat-loss requirement can net out at a few hundred euro, but most homes do not qualify for all four grant components.

What is the SEAI heat pump grant worth in 2026?

SEAI puts the bundle at up to €14,500: up to €6,500 for the heat pump system, up to €2,000 for central heating upgrade works where required, a €4,000 Renewable Heat Bonus for removing fossil fuel or electric storage heating, and €2,000 fossil fuel boiler scrappage support announced on 29 September 2026. SEAI's grant-values table still shows €12,500 for a house and €9,500 for an apartment, which is the bundle before scrappage. Air to air systems are €7,500.

Is a heat pump cheaper to run than oil in Ireland?

Usually, but not always. In SEAI's Domestic Fuel Cost Comparison dated 1 July 2026, a heat pump at SPF 3 on electricity Band DD costs 11.46c per useful kWh, against 15.75c for a kerosene boiler at 80% efficiency on schedule-price oil. That is about 27% less. At SPF 2.5 the heat pump costs 13.75c, which is more than a 90%-efficient boiler burning discounted kerosene at 13.02c. The outcome turns on the Seasonal Performance Factor your installation actually achieves.

What VAT rate applies to heat pumps in Ireland?

9%. Revenue confirms that from 1 January 2025 the supply and installation of a heat pump heating system is taxable at the second reduced rate of VAT. Before that date it was the 13.5% reduced rate subject to the two-thirds rule, which meant many jobs were charged at the 23% standard rate.

Why might my house not qualify for the heat pump grant?

The most common reason is heat loss. Homes built before 2007 need a technical assessment unless they hold a valid BER showing a Heat Loss Indicator of 2.3 W/(K.m²) or lower. If the assessment puts you above that, you must carry out the fabric upgrades it identifies before the grant is available, and SEAI does not publish what that typically costs. The home also needs an MPRN and must have been built and occupied before 2021.

What does the heat loss assessment cost?

SEAI pays a €200 grant towards a technical assessment, which must be completed before you apply for the heat pump grant. It is required for homes built before 2007 that do not have a valid BER, or whose BER shows high heat loss. Homes built from 2007 onwards do not need one and can sign a self-declaration form instead.

Can I get a grant to replace an existing heat pump?

Yes, but a much smaller one. Where the existing heat pump was never grant-aided under any SEAI domestic scheme, the maximum is €6,500 for a house or €4,500 for an apartment. You do not get the €4,000 Renewable Heat Bonus, the €2,000 central heating grant or the €2,000 scrappage support, because you are not switching away from fossil fuel heating.

Can I claim the heat pump grant and the solar grant together?

Yes. They are separate SEAI grants and a single home can claim both. The solar electricity grant is worth up to €1,800 and the heat pump bundle up to €14,500. Pairing them also improves the running-cost case, because every kWh of solar you self-consume through a heat pump at SPF 3 becomes roughly 3 kWh of heat.

How long does the heat pump grant process take?

An online application is usually approved within minutes, and you then have 30 days to accept the offer and eight months to complete the works and draw the grant down. You need a post-works BER before payment, and SEAI asks for four to six weeks to process it. If you receive more than €10,000 in grant payments in a single calendar year you also need a tax clearance certificate.

Does a heat pump need underfloor heating?

No, but it performs better with it. SEAI's published Seasonal Performance Factors assume the heat pump is working into a low-temperature system such as underfloor heating, and the lower the water temperature, the higher the SPF. Existing radiators can work, and SEAI's grant includes up to €2,000 for replacing emitters where the contractor's design requires it. Since the SPF drives the running cost, this is the part of a quote worth pressing hardest on.