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Heat pumps · Octopus

Octopus heat pumps and Cosy tariff

Cosy heat pumps, the government grant and the heat pump tariff, plus £50 when you switch with the referral code.

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  • Checked 15 October 2026
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Quick answer

Octopus heat pumps: Cosy 6, 9 and 12. Typical price £4,064 after the £7,500 Boiler Upgrade Scheme grant (median, June–September 2026).

Cosy Octopus tariff: 8 cheaper hours a day for heat pump homes.

Cosy 6, 9 and 12

Octopus Cosy heat pumps. Cosy 6 is generally suitable for homes with 1–4 bedrooms.

Typical price £4,064

After the grant (median, quotes from 1 June to 30 September 2026), against a national average of £5,408.

Boiler Upgrade Scheme

England and Wales: £7,500 off, or £9,000 for eligible off-gas homes replacing oil or LPG. Octopus takes the grant off your quote. The scheme runs until March 2028. Scotland has the Home Energy Scotland grant and loan.

Cosy Octopus tariff

London example: 12.44p (04–07, 13–16, 22–24), 25.36p standard, 38.04p peak (16–19).

Sources (checked 15 October 2026): Cosy heat pump, Boiler Upgrade Scheme, Octopus public price API.

Questions

How much does an Octopus heat pump cost?

Octopus gives a typical price of £4,064. That's the median quote after a survey and after the £7,500 Boiler Upgrade Scheme grant, for quotes from 1 June to 30 September 2026. Your price depends on your home.

Which tariff suits a heat pump?

Cosy Octopus has eight cheap hours a day for heat pumps. If you also have an EV, Octopus says Intelligent Octopus Go often works out better.

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Already signing up? As the original site says: copy and paste this referral code if you are already in the process of signing up. Octopus also says that if you forgot the link you can contact them with the referral code afterwards, as long as you signed up directly on its website. Credit is paid after your switch completes and your first Direct Debit is taken (usually about 4 weeks). Comparison sites and phone sign-ups don't qualify.

Last checked: . Page updated 15 October 2026.