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Air-to-air heat pumps

By Airva Editorial · Reviewed by Airva Technical Review · Updated 13 July 2026

Most modern reversible air-conditioning systems are air-to-air heat pumps. They move heat rather than burning fuel: out of the building when cooling, and into it when heating.

Heating and cooling in one system

  • Summer — the system cools rooms like conventional air conditioning.
  • Winter — the same units can warm rooms efficiently, often delivering several units of heat per unit of electricity.

This makes them a flexible, year-round option — see running costs for what that means in practice.

Grant support

There is a government grant category for eligible residential air-to-air heat pumps. Eligibility is never automatic — it depends on the property, the system, your existing heating and the installer's qualifications. We help eligible homeowners check their options and route grant-relevant enquiries to appropriately qualified installers. Grant details change, so treat any figure as indicative until confirmed.

Explore split systems and multi-split systems, or request an installer match.

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