An air source heat pump moves heat instead of making it.
An air source heat pump delivers more heat energy than the electricity it uses, because it moves warmth from the outside air rather than burning anything. The design question is whether your home lets it run at its best.
The honest questions before any quote
Heat pumps run best at lower flow temperatures than a gas boiler, which makes insulation, radiator sizing and your home's heat loss part of the conversation from the start. A good survey answers those before anyone talks price.
They are electric, which changes your bills' shape: more electricity, no gas. That makes the tariff question live here too, and heat-pump tariffs with cheaper windows exist; the tariff guide covers them.
Grant support: the Boiler Upgrade Scheme offered £7,500 towards an air source heat pump in England and Wales as checked in August 2026 (source: gov.uk). Scheme rules and amounts change, so we confirm the current position on your call rather than letting you rely on a webpage. Lower-interest loans for heat pumps and solar are also on the way under the Warm Homes Loan Scheme.
Outdoor units, sized to your heat loss
Monobloc air source units in a range of outputs. The survey decides the size, never the brochure.
Guides on this topic
Sourced, dated, and written to be read before anyone quotes you.
Are air source heat pumps any good? What owners actually report
The UK's largest survey found 80% of heat pump owners satisfied, against 70% for gas boilers.
Read the guide →Are heat pumps worth it? The real 2026 numbers
Electricity costs 3.3x gas per kWh. A heat pump is about 3x as efficient. The numbers nearly cancel out.
Read the guide →The Boiler Upgrade Scheme, explained
A fixed amount, claimed by your installation team, with a real deadline on the £9,000 version.
Read the guide →Do you need to replace your radiators for a heat pump?
Some change, most do not. The room by room arithmetic that decides which.
Read the guide →Are heat pumps noisy? The 37 dB(A) answer, in plain terms
The 1 metre boundary rule is gone. A 37 dB(A) sound test replaced it.
Read the guide →Heat pump running costs versus a gas boiler, assumptions shown
Four numbers decide it: seasonal efficiency, flow temperature, tariff and heat demand.
Read the guide →Heat Pumps questions, answered
Do heat pumps work in cold weather?
Yes. They are the dominant heating technology in countries far colder than Britain. Output efficiency falls as temperatures drop, which is why correct sizing for your home’s heat loss matters more than headline figures.
Do I need to replace my radiators?
Sometimes some of them. Heat pumps run at lower flow temperatures, so a few radiators may need to be larger to deliver the same warmth. A proper heat-loss survey identifies exactly which, before you commit to anything.
Is my home suitable for a heat pump?
Most homes can be made suitable; the honest question is at what cost. Insulation, space for the outdoor unit and a hot water cylinder all play in. That suitability conversation is precisely what the free call is for, and it is free because we are not selling you the installation.
Get your free quote
Takes about two minutes. We work out your options, then confirm your free remote design call, on video, at a time that suits you. It starts with your roof and your numbers, and the design is built around them rather than around a product someone needs to shift.