SEAI Registered Heat Pump Installers Ireland

The most common type is the air-to-water heat pump, which extracts heat from outdoor air and transfers it to your wet central heating system. Ground source (geothermal) heat pumps use underground loops and are more efficient but cost more to install. Air-to-air heat pumps provide warm air directly but are less common in Irish homes because they don’t heat water. The SEAI grant covers air-to-water and ground source systems.

A typical air-to-water heat pump system costs €9,000–€14,000 installed, depending on the size of your home and whether you need a new hot water cylinder. Ground source systems are more expensive, typically €14,000–€18,000 due to the borehole or ground loop installation. The SEAI grant increased to up to €14,500 from 6 October 2026, made up of up to €10,500 for the heat pump, up to €2,000 for central heating upgrades, and €2,000 boiler scrappage when it replaces a fossil fuel system. The grant can cover most or all of the cost of an air-to-water system, but can never exceed the cost of the works.

Heat pumps work best in well-insulated homes because they produce heat at lower temperatures than oil or gas boilers. To qualify for the SEAI grant, your home's Heat Loss Indicator (HLI), taken from your BER, must be 2.3 W/K/m² or lower. Homes built before 2007 need either a valid BER showing an HLI of 2.3 or under, or a Technical Assessment by an SEAI-registered Technical Advisor; homes built from 2007 on do not need one. Most installers will carry out a heat loss calculation to size the system correctly. If your home needs insulation upgrades, SEAI offers separate grants for attic, wall, and floor insulation.

Popular brands in Ireland include Daikin, Mitsubishi Electric, Samsung, Grant, Panasonic, and Vaillant. Daikin and Mitsubishi are the most widely installed. When comparing quotes, check the SCOP (Seasonal Coefficient of Performance) rating — a higher SCOP means better efficiency. A good air-to-water system should have a SCOP of 3.5 or above, meaning it produces 3.5 kWh of heat for every 1 kWh of electricity.