Working file V3
Heat Geek vs Octopus (UK 2026)
Heat Geek vs Octopus (UK 2026): side-by-side decision aid with capex, grant treatment, payback shape and surveyor's note.
| Dimension | Heat Geek (Mastery network) | Octopus Cosy 6 |
|---|---|---|
| Design model | Low-temp design-led; bespoke per house | Standardised process at national volume |
| Headline price | Quote-only | Typical (median) £4,064 net post-BUS |
| Delivered SCOP | Heat Geek dataset consistently above3.8 on well-designed jobs | Variable; depends on installer crew |
| Premium | £1,500 to £4,000 above national volume | n/a |
Surveyor's note
If you can afford the design premium and intend to run the pump for 15 years, the delivered-SCOP gap pays the premium back. If you cannot, the Octopus typical price plus a careful tariff strategy is the defensible answer.
Surveyed 1 October 2026. Ofgem cap for 1 October to 31 December 2026 applied (gas 7.97p, elec 26.32p, gas standing 29.68p, elec standing 54.83p). Next scheduled review 25 November 2026 (January cap announcement). [ref V3]
By Oliver Wakefield-Smith, Founder, Digital Signet. Corrections to oliver at digitalsignet dot com.