Efficient warmth, before the boiler bills get worse.
A well-specified air source heat pump runs at three units of heat for every unit of electricity it draws. In a properly insulated home, that's a quieter, cheaper, lower-carbon way to keep the house warm; with a £7,500 government grant currently softening the up-front cost.
Heat pumps reward two things: a sensible installer who actually surveys the property, and a home that doesn't leak heat through the windows. Get those right and you have a system that costs less to run than the gas boiler it replaces. Get either wrong and you've bought an expensive disappointment.
What we cover
Air source heat pump cost
What the survey, install and grant actually add up to in 2026.
Heat pump installation cost
Day-by-day breakdown of what goes into an MCS installation.
Heat pump grants in the UK
Eligibility and how to apply for the £7,500 BUS grant.
Heat pump vs gas boiler
The honest running-cost and comfort comparison.
Specific products, with a verdict.
VaillantaroTHERM plus 7 kWVaillant's R290 monobloc; the unit most MCS installers will quote first for a well-insulated 3-bed. Quiet, high-flow-temperature capable, made in Germany.
£11,000–£14,000 installed (before £7,500 BUS grant)Read
Mitsubishi ElectricEcodan PUZ-WM85The most-installed heat pump in the UK. Not the most efficient on paper; but with a near-unmatched track record of running reliably for a decade in real British homes.
£10,500–£13,500 installed (before grant)Read
DaikinAltherma 3 H HT R290 (6 kW)Daikin's R290 high-temperature unit; the credible answer when you need 65°C+ flow without dropping the radiators. The pragmatic retrofit choice.
£11,500–£14,500 installed (before grant)Read
SamsungEHS Mono HT Quiet R290 (8 kW)Samsung's R290 monobloc; significantly cheaper than the Vaillant/Mitsubishi tier, with strong measured efficiency. The value pick if your installer is comfortable with the brand.
£9,000–£12,000 installed (before grant)Read
Octopus EnergyCosy 6Octopus's own-brand R290 monobloc paired with a single-vendor install, smart Cosy tariff and one warranty. The 'don't make me think' option.
From £7,500 after grant, fixed-price installRead
Editorial render. Not a manufacturer photograph; we do not redistribute press imagery without a licence.
Where we have vetted installers so far
We only match in places where we have personally vetted the installers. The list grows region by region. If your postcode is not yet on it, the form below puts you on the waitlist for when we are.
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Quotes from MCS-accredited installers, not a call centre.
We match you with up to three local installers who actually survey your home before quoting. Grant guidance included.