Heat Pump Costs in Ireland — Installation & Running Costs
What a heat pump actually costs to install and run in an Irish home, before and after the SEAI grant of up to €12,500.
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Installation cost varies by heat pump type. All figures are before the SEAI grant.
| Heat Pump Type | Typical Installed Cost | Max SEAI Grant |
|---|---|---|
| Air-to-Water | €12,000 – €18,000 | €12,500 |
| Ground Source | €20,000 – €35,000 | €12,500 |
| Air-to-Air | €4,000 – €9,000 | €7,500 |
See our full SEAI Heat Pump Grant guide for the full grant breakdown and eligibility criteria.
Heat Pump Running Costs vs Oil
Savings estimates based on a typical 3-bed semi-detached home. Actual savings depend on insulation levels, system size, and electricity tariff. The Commission for Regulation of Utilities (CRU) regulates electricity pricing in Ireland. See our full Heat Pump vs Oil & Gas comparison.
What Determines Your Heat Pump Running Cost?
| Factor | Impact |
|---|---|
| Insulation level | Poorly insulated homes need more energy to reach the same temperature |
| Heat pump type | Ground source typically has the lowest running cost; air-to-air the lowest upfront cost |
| Electricity tariff | Night-rate or heat pump-specific tariffs reduce running cost significantly |
| System sizing | An oversized or undersized system runs less efficiently — see our heating upgrades guide |
| Servicing | A well-maintained system holds its rated efficiency for longer |
Get an Accurate Quote for Your Home
Costs vary by home. Fill in your details and get a free, accurate quote from an SEAI-registered installer.
Heat Pump Cost FAQ
Air-to-air heat pumps have the lowest installation cost, typically €4,000–€9,000, but they don’t provide hot water and are eligible for a lower maximum grant of €7,500.
Generally yes, larger homes require more energy to heat regardless of the system used. However, the proportional savings versus oil or gas remain similar.
Annual servicing typically costs €120–€220. See our servicing page for details.
Yes, the Home Energy Upgrade Loan Scheme offers government-backed loans from 2.99% APR for €5,000–€75,000, which can be used alongside the SEAI grant.