Best Heat Pumps UK 2026: How to Choose (and the Brands We Rate)

Search “best heat pump” and you'll get a dozen lists that all disagree. The truth: there's no universal best — there's the right unit for your home, correctly sized and installed. Get that wrong with the “best” brand and it'll still disappoint. Here's what actually matters, then an honest brand rundown.

What actually matters (in order)

  1. Correct sizing & install — the single biggest factor in performance and bills. See our sizing guide.
  2. Refrigerant & flow temperature — R290 (propane) units reach 75°C, ideal for retrofits on existing radiators.
  3. Efficiency (SCOP) — higher = lower bills. Look for 4.0+ at 35°C.
  4. Noise — dB(A) matters for tight gardens and planning.
  5. Warranty & support — length, and whether it needs certified install.
  6. MCS-listed — required for the grant.

The major brands, honestly

  • Samsung EHS Mono R290 — Samsung's Gen-7 propane range; 75°C flow, strong efficiency, SmartThings control, keen pricing. A genuinely strong all-rounder and our go-to value pick.
  • Mitsubishi Ecodan — the UK installer favourite; hugely proven, reliable, big support network.
  • Daikin Altherma — excellent engineering and controls, wide range, strong brand trust.
  • Vaillant aroTHERM plus — R290, quiet, premium build; popular with heating engineers.
  • Grant Aerona³ — well-priced, solid performer, very common in UK installs.
  • NIBE S2125 — premium R290 with smart S-series controls; excellent cold-weather performance.
  • Alpha Magis M — keen value monobloc range, simple to install.
  • Panasonic Aquarea — reliable, efficient, strong range across sizes.

So which should you buy?

For most UK retrofits, a well-sized R290 monobloc from any of the above will serve you well — the brand matters less than the sizing and install quality. If you want our honest steer for your specific home, the System Finder narrows it down, or browse the full heat pump range.

Frequently asked questions

What's the best heat pump brand in the UK? There's no single best — Samsung, Mitsubishi, Daikin, Vaillant, Grant, NIBE, Alpha and Panasonic are all strong. The right choice depends on your home, sizing and budget; correct installation matters more than brand.

Which refrigerant is best? R290 (propane) is the current best choice for most homes — low environmental impact and high flow temperatures (up to 75°C) suited to existing radiators.

What SCOP should I look for? Aim for 4.0 or higher at 35°C flow for strong real-world efficiency.

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