Working file M3.3

Hybrid heat pump cost (UK 2026)

Hybrid heat pump cost: installed cost range with each end sourced, BUS grant treatment, payback shape.

Cost in 2026

Hybrid heat pump cost (UK 2026). The published installed range in 2026 is £8,000 to £14,000 for a hybrid (gas boiler plus ASHP) (heatpumps.org.uk and installer publishers). BUS does not currently apply to new hybrid installations. Both ends of that range are stated rather than collapsed to a midpoint, because the spread reflects real differences in scope, access and grant eligibility rather than installer mark-up.

What drives the spread

  • Whether the existing boiler is kept (saving £2,000 to £3,000).
  • Controls and changeover logic between the two heat sources.
  • Running-cost split: hybrids weight heating to gas at low ambient temperatures.
  • Carbon trajectory: the hybrid is a transitional answer, not an end-state under the Warm Homes Plan.

Where it sits in the PAS 2035 sequence

Hybrid is a stopgap where fabric cannot be improved enough for a full HP.

Surveyed 22 June 2026. Ofgem Q3 2026 cap applied (gas 7.33p, elec 26.11p, gas standing 29.04p). Next scheduled review 26 September 2026 (Q4 cap publication). [ref M3.3]
By Oliver Wakefield-Smith, Founder, Digital Signet. Corrections to oliver at digitalsignet dot com.