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Air to air heat pump cost in Ireland

An air to air heat pump costs €3,000–€5,000 installed in Ireland for a single-room unit and €5,000–€8,000 for a multi-room system. The SEAI grant of up to €9,500 can cover most or all of that when the system replaces your main heating.

Prices last reviewed October 2026

Air to air heat pump prices

SystemInstalled priceHeats and cools
Single-room unit€3,000–€5,000One large room or open-plan area
Multi-room system, 3 to 5 indoor units€5,000–€8,000Several rooms from one outdoor unit

Where the money goes

The price of a single-room system splits roughly in half:

ItemCostNotes
Indoor and outdoor units€1,200–€2,500Depends on the brand and the output
Installation€1,200–€2,500About a day, by an F-Gas registered engineer

Installation covers:

  • Mounting the indoor unit and the outdoor unit
  • Refrigerant pipework through the wall
  • A condensate drain
  • The electrical connection
  • Commissioning

What pushes the price up

  • An indoor unit on an internal wall, which needs a longer pipe run
  • Three or more indoor units on one system
  • An apartment or protected building, where the outdoor unit may need approval

Cost after the SEAI grant

SEAI pays up to €9,500 for an air to air heat pump that replaces your main fossil fuel or electric storage heating. It never pays more than the cost of the works.

For an apartment with storage heaters, that can cover most or all of a €5,000–€8,000 multi-room system. A single unit added alongside an existing boiler gets no grant, so you pay the full €3,000–€5,000. See the grant rules.

Air to air cost vs air to water

An air to water heat pump costs €9,000–€14,000 installed and has a grant of up to €14,500. It heats the radiators and the hot water, which air to air does not.

Air to air is the lower-cost choice for one room, an apartment or a small well-insulated home. See what an air to air heat pump suits.

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