Vaillant
Vaillant aroTHERM Plus
7kW
One of the most efficient heat pumps on UK sale: natural R290 refrigerant, 65°C flow temperature and a class-leading SCOP — well suited to retrofits.
4.7 ~£11,000
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Heat Pumps
Heat pumps are 3–4× more efficient than a gas boiler. We compare the best UK models on the specs that matter — efficiency (SCOP), flow temperature, noise and warranty — and help you work out the real cost after the grant.
£7,500 Boiler Upgrade Scheme grant
England & Wales homeowners can claim £7,500 off an air or ground source heat pump, often
bringing the price close to a new gas boiler. See if you qualify →
Air Source Heat Pumps
Compare the best air source heat pumps in the UK — Vaillant, Mitsubishi Ecodan, Daikin, Octopus Cosy, Grant — by SCOP, flow temperature, noise, warranty and cost.
6 compared →Ground Source Heat Pumps
Compare ground source heat pumps in the UK — Kensa, NIBE — by efficiency (SCOP), output, flow temperature and warranty. Independent specs from PowerGuide.
2 compared →Top-rated heat pumps
Mitsubishi Electric
Mitsubishi Ecodan
8.5kW R290
The UK's most-installed heat pump — proven reliability and the deepest installer network, now with an efficient R290 model.
4.6 ~£11,500
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Octopus Energy
Octopus Cosy 6
6kW
Octopus's own 6kW R290 heat pump, usually fitted by Octopus — with the £7,500 grant the all-in price often lands close to a new gas boiler.
4.6 ~£9,500
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