Heat pump cost in Ireland
What air source, ground source and air-to-air heat pumps cost, and what the SEAI grant brings each one down to.
Grant figures confirmed against SEAI
Heat Pump Cost in Ireland, Before and After the Grant
Heat pump cost in Ireland depends mostly on the type of system. An air-to-water heat pump, the standard choice for Irish homes, runs between €12,000 and €18,000 before grants, which the SEAI grant brings down to a net €5,500 to €11,500. The figures below are indicative installed prices, not equipment only.
Air-to-Water Heat Pump
€12,000–€18,000
Net €5,500–€11,500 (as of July 2026)
The standard whole-home choice. Heats radiators, underfloor and hot water.
Ground Source Heat Pump
€20,000–€30,000
Net €13,500–€23,500
Higher efficiency from ground loops. Best for larger rural sites.
Air-to-Air Heat Pump
€3,000–€8,000
Net from around €2,500
Lowest cost. Heats the air only, no hot water.
What Affects the Price of a Heat Pump Installation
Two homes rarely pay the same. Three things drive most of the difference between one quote and the next.
Radiator Sizing
A heat pump runs cooler than a boiler, so some radiators may need upsizing to give out the same heat at a lower temperature. Many homes only replace a few, which keeps the cost down.
Hot Water and the Cylinder
Many installations add or replace a hot water cylinder sized to the household. Whether one is already in place moves the price up or down.
Electrical Supply
A heat pump may need its own dedicated electrical supply, which some homes have to add, so ask your installer what your house needs. For RECI-registered electricians, electriciansinireland.ie lists electricians drawn from the RECI register.
Running Costs and the Real Cost After the SEAI Grant
The upfront heat pump cost is only half the picture. A heat pump replaces oil or gas with electricity and delivers several units of heat for each unit it uses, so most homes see lower running costs, especially once the fabric of the house is well insulated.
The SEAI grant of up to €12,500 (as of July 2026) is a fixed contribution, so the real heat pump cost you pay is the installed price minus that grant. SEAI requires the installer to be on its registered contractor list. Installers here are listed from the SEAI register (checked July 2026), so confirm registration with SEAI before you book.
Get quotes from installersHeat Pump Cost in Ireland, Answered
How much does a heat pump cost in Ireland?
An air-to-water heat pump, the most common type, costs between €12,000 and €18,000 before grants. The SEAI heat pump grant of €6,500 (as of July 2026) brings the net cost to between €5,500 and €11,500, depending on what you are replacing and whether heating upgrades are needed. Total SEAI support for a house can reach €12,500, but that figure covers other measures as well as the heat pump itself, so it is not a straight deduction from the installed price.
What is the cheapest type of heat pump?
An air-to-air heat pump is the lowest-cost option, from around €3,000 to €8,000, but it heats the air only and does not provide hot water. Air-to-water is the standard whole-home choice.
How much does a ground source heat pump cost?
Ground source systems cost more to install, typically €20,000 to €30,000, because of the ground loops or boreholes. They are more efficient over their lifetime and suit larger rural sites.
What affects the price of a heat pump installation?
Radiator sizing, hot water demand, how much pipework needs replacing, and whether a new cylinder is required all move the price. A home survey helps the installer give a more informed quote.
Does a heat pump reduce running costs?
A heat pump replaces oil or gas with electricity and runs at high efficiency, so most homes see lower heating bills, particularly when the fabric of the house is well insulated first.
Is the SEAI grant taken off the price?
The SEAI grant of up to €12,500 (as of July 2026) is a fixed contribution, so the real cost you pay is the installed price minus the grant. The installer must be SEAI-registered for it to be paid.
How long does a heat pump installation take?
An air source system mounts beside the house and connects to your existing heating, so it is usually a job of a few days. A ground source system needs trenched ground loops or a drilled borehole, which pushes the timeline out to weeks.
Do I need a new hot water cylinder?
A heat pump heats domestic hot water through a cylinder rather than on demand. Homes that already have a suitable cylinder may keep it. Homes without one, or with an older direct cylinder, usually need a new cylinder sized to the household, and that sits inside the installed price.
Why do two quotes for the same house differ so much?
Because the work depends on what is already there rather than on a price list. How many radiators need upsizing, whether a cylinder is in place and what the electrical supply can take all move the figure, and each installer sizes those differently after a survey.
More on Heat Pumps and SEAI Grants
SEAI Heat Pump Grant Explained How the grant of up to €12,500 (as of July 2026) works and how to apply. Read guide 
Is My Home Suitable for a Heat Pump? Insulation, BER and radiators that decide suitability. Read guide 
Air Source vs Ground Source The two heat pump types compared on cost and efficiency. Read guide 
Heat Pump Installers in Ireland SEAI-registered, grant-eligible installers in all 26 counties. Read guide Heat Pump Cost in Ireland Compared by System Type
The three system types side by side, with the installed price, what the SEAI heat pump grant brings it down to, and whether the system covers hot water.
| System | Installed cost | Net after SEAI grant | Heats hot water | Best suited to |
|---|---|---|---|---|
| Air-to-water heat pump | €12,000 to €18,000 | €5,500 to €11,500 | Yes | Whole-home heating through radiators or underfloor |
| Ground source heat pump | €20,000 to €30,000 | €13,500 to €23,500 | Yes | Larger rural sites with room for loops or a borehole |
| Air-to-air heat pump | €3,000 to €8,000 | From around €2,500 | No | Heating the air only, at the lowest upfront cost |
Indicative installed prices, not equipment only, so treat them as estimates and get quotes for your own home. Net figures are after the SEAI heat pump grant of €6,500 for an air-to-water or ground source system (as of July 2026, per SEAI). Total SEAI support for a house can reach up to €12,500, but that covers other measures as well as the heat pump, so it is not a straight deduction from the prices above.
Get Heat Pump Quotes From Installers Near You
A survey gives the most accurate heat pump cost for your home. Installers here are listed from the SEAI register (checked July 2026), and SEAI support is up to €12,500 (as of July 2026), so confirm registration and eligibility with SEAI.
Quotes vary because the work does. The size of the house, the insulation already in place, whether the existing radiators can run at a lower flow temperature and how much hot water the household uses all move the figure. Two installers surveying the same house can land some way apart, so it is worth getting more than one before you commit to anything.