Heat pumps for homes and businesses
A heat pump takes heat from the outside air and moves it indoors, giving you several units of heat for every unit of electricity. We install air to air and air to water heat pumps — air to air heats a room in winter and cools it in summer, air to water heats radiators and hot water — for homes and businesses across Surrey, Berkshire and London. This page explains the types, which suits you, and where to go next.
Reviewed by Harry Lee, Director, HT Cooling Ltd (F-Gas registered company, certificate 2004080) · Last checked 23 September 2026
Two kinds of heat pump — and which we fit
An air to air heat pump warms the air in a room directly. It is the same equipment as a modern air conditioning system: an outdoor unit and one or more indoor units. It heats in winter, cools in summer, and each room controls its own temperature. We install both air-to-air heat pumps and air to water heat pumps.
An air to water heat pump heats water for radiators, underfloor heating and hot water. It replaces a boiler.
Our air source heat pump page has more on the equipment itself.
Who a heat pump suits
A room or floor that is hard to keep comfortable — a loft conversion, a home office, a garden room, a conservatory. A home with no gas, or with electric heating that costs too much to run. A new build or a renovation where the pipework and wiring can be planned in from the start. Offices and shops that need heating and cooling from one system.
Does it work in winter?
Yes. A modern unit keeps heating well below freezing. Efficiency dips a little on the coldest days because there is less heat in the air to collect, but it keeps running. We will show you the seasonal efficiency figure for the exact model we quote, not a brochure average.
Grants
The government has announced a £2,500 grant for air to air heat pumps from 2027. It cannot be claimed yet. When the scheme opens we will say plainly who qualifies and how to apply.
What it costs
It depends on the number of rooms, the pipe runs and the electrics. We quote after a free survey.
Our heat pumps pages
Why people choose HT Cooling
Every engineer who works on refrigerant is F-Gas registered (certificate number 2004080). We hold Constructionline Gold, SMAS Worksafe and Acclaim accreditation, and our engineers are City & Guilds trained. We are rated 5.0 on Google from 50 reviews, with 66 reviews on Checkatrade, where we have been members since 2021. We are based in Lightwater, Surrey, and work across Surrey, Berkshire, Hampshire and London.
Questions people ask
Talk to an engineer, not a call centre
Call 03453 022 969 or send us a few details and we will come back to you the same working day.