Heat pumps seem to be everywhere in Ireland—from new housing estates and one-off builds to older bungalows undergoing complete energy retrofits.
It may look like the latest home-improvement craze, but there are solid reasons behind the growing interest. SEAI reported more than 350 applications for heat-pump installations in the first quarter of 2026, up 95% year on year. CSO figures for Q1 2026 also show heat pumps in 15% of BER-rated dwellings overall and in 84% of rated dwellings built between 2020 and 2024.
How Does a Heat Pump Work?
A heat pump takes naturally occurring heat from the outside air, ground or water and uses electricity to raise it to a useful temperature. That heat can then be used for space heating and, depending on the system, domestic hot water.
Air-to-water systems are the most common heat-pump option supported for Irish homes. Heat-pump efficiency is usually described using a coefficient of performance (COP); SEAI notes that heat pumps can deliver roughly three to four units of heat for every unit of electricity consumed under suitable operating conditions.
What Are the Benefits of a Heat Pump?
A warmer, more comfortable home
Heat pumps are designed to provide steady, lower-temperature heating. Instead of repeatedly blasting radiators and allowing the house to cool, a correctly sized system can maintain a more consistent indoor temperature.
Reduced energy use
A heat pump moves existing heat rather than creating all its heat by burning oil or gas. This can make it highly efficient, but real running costs depend on the building fabric, electricity tariff, heating controls, heat loss, system design and household use. A heat pump should never be sold with a guaranteed saving.
Less reliance on oil and gas
Replacing fossil-fuel heating with a heat pump can reduce direct household reliance on oil, gas or solid fuel, while electricity generation continues to incorporate more renewable energy.
A better BER rating
A correctly designed heat-pump system can contribute to a stronger Building Energy Rating, particularly when it forms part of a wider fabric and heating upgrade. For more detail, see our BER Ratings in Ireland guide.
Heat-pump readiness
Insulate first. Size it properly.
SEAI states that heat pumps work best in well-insulated homes. The less heat your property loses, the less energy the heating system needs to keep it comfortable.
The Catch: Your Home Must Be Heat-Pump Ready
A heat pump is not simply a modern boiler that can be dropped into every Irish home without preparation. It performs best where heat loss is controlled and the heat emitters, controls, cylinder and pipework are suitable for lower flow temperatures.
SEAI says homes built before 2007 may need a Technical Assessment before a heat-pump grant application. A pre-2007 home with a valid BER showing the required Heat Loss Indicator can use the relevant self-declaration route instead; otherwise an assessment is required.
Depending on the property, preparation can include:
- Attic or wall insulation
- Airtightness improvements and suitable ventilation
- Larger or additional radiators
- Underfloor heating
- Pipework alterations
- Heating-control upgrades
- Electrical work
- A heat-pump-compatible hot-water cylinder
The system should be sized from a proper heat-loss calculation rather than chosen simply because it has the same nominal output as the previous boiler.
Heat-Pump Grants in Ireland for 2026
At the time of writing, SEAI's individual Heat Pump System grant offers support of up to €12,500 for qualifying homes, depending on the dwelling type and eligibility.
- Up to €6,500 for the Heat Pump System
- Up to €2,000 for required central-heating upgrades such as radiators or underfloor heating
- A €4,000 Renewable Heat Bonus for eligible homeowners replacing oil/gas, solid-fuel or electric-storage heating
SEAI's current grant page states that the home must be built and occupied before 2021 for this individual grant route, and the work must follow the scheme requirements. Grant approval should be obtained before eligible works begin.
Read our SEAI Grants Ireland 2026 guide for broader information on support for heat pumps, insulation and other home-energy upgrades.
What Does a Heat Pump Cost in Ireland?
There is no single national price for heat-pump installation. The final cost depends on the size and heat loss of the property, heat-pump type and output, radiators and pipework, hot-water cylinder, electrical work, insulation, ventilation, heating controls, access and installation complexity.
For indicative Irish prices covering plumbing, heating, radiators, hot-water systems and heat-pump-related work, read our Plumber Costs in Ireland 2026 guide. Those figures are budgeting estimates rather than fixed rates; always obtain a current written quotation that clearly states what is included.
How Trade Source IRE Can Help
A complete heat-pump project can involve several professionals, including insulation contractors, plumbers, heating specialists and electricians. Trade Source IRE lets homeowners submit the project details once and helps route the enquiry to potentially suitable professionals across Ireland where available.
- Find insulation contractors across Ireland
- Find plumbers and heating professionals
- Find electricians across Ireland
- Submit your heat-pump or retrofit project
Before appointing anyone, independently check their SEAI registration for the specific grant-supported work, together with insurance, experience, references, qualifications and the proposed system design.
Are Heat Pumps Worth the Hype?
For the right property, a heat pump can provide steady comfort, efficient heating, reliable hot water, improved BER performance and reduced dependence on oil or gas.
However, preparation and design make all the difference. Insulation, ventilation, heat-loss calculations, radiator sizing, controls and professional installation should all be considered before the old heating system is removed.
Insulate first. Size it properly. Get it installed right.
Every Trade. One Trusted Source.
Official Irish information sources
Important note
This article provides general information. Heat-pump suitability, costs, performance and savings depend on the individual property, building fabric, heat demand, system design, electricity tariff and household energy use. Always confirm current SEAI scheme rules and grant values before starting work.