Octopus Heat Pump Review 2026
Octopus Energy installs air source heat pumps through its Octopus Energy Services arm, and pairs them with the Cosy Octopus tariff built for heat pump homes. With the £7,500 Boiler Upgrade Scheme grant applied, Octopus has fitted many systems at a low net cost. The tariff is the real draw, but it is worth comparing against independent MCS installers before you commit.
Quick Answer
Octopus Energy installs air source heat pumps with the £7,500 BUS grant applied, often bringing the net cost to a few thousand pounds for a standard home. The Cosy Octopus tariff gives cheaper electricity for several hours a day to run the heat pump. Independent MCS installers are worth comparing on price and lead time.
Independent review, 2026. Solar Info UK is not affiliated with Octopus Energy.
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
How much does an Octopus heat pump cost?
Octopus quotes per home after a survey, with the £7,500 grant already deducted. For a standard, reasonably insulated home Octopus has marketed installs at a low net cost, sometimes a few thousand pounds, though larger or harder-to-heat homes pay more. As with any installer, the quote depends on your heat loss survey, the unit size and any radiator upgrades. Compare it against our independent heat pump cost guide.
| Item | Typical Range |
|---|---|
| Air source system before grant | £8,000–£14,000 |
| Less BUS grant | −£7,500 |
| Net cost to you | £500–£6,500 |
Indicative ranges for air source installs generally. Octopus prices its own packages individually after survey.
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Get a Quote →The Cosy Octopus tariff
Cosy Octopus is a heat pump tariff that gives cheaper electricity during set off-peak windows each day, timed so your heat pump can pre-heat the home and hot water when power is cheapest. Used well, it is one of the better ways to keep heat pump running costs down. You do not have to buy a heat pump from Octopus to move onto a heat pump tariff once your system is installed.
- Cheaper unit rate during daily off-peak windows
- Designed to pair with smart heat pump controls
- Available to heat pump homes regardless of who installed the unit
- Works alongside solar to cut running costs further
Octopus vs independent installers
Octopus strengths
- Competitive, sometimes low net pricing on standard homes
- The Cosy Octopus tariff, built for heat pumps
- One brand handling install, tariff and support
- Strong smart controls and monitoring
Why still compare
- An independent installer may beat the quote on your home
- Local installers can have shorter lead times
- You can pick a specific brand (Vaillant, Mitsubishi, Daikin)
- You can still move onto a heat pump tariff afterwards
Browse heat pump brands and MCS-certified installers near you to compare.
Octopus Heat Pump FAQ
How much does an Octopus heat pump cost?
Octopus prices each install after a survey with the £7,500 grant deducted. For a standard, reasonably insulated home the net cost can be a few thousand pounds, while larger or harder-to-heat homes pay more. Air source systems generally run £8,000 to £14,000 before the grant.
What is the Cosy Octopus tariff?
Cosy Octopus is a heat pump electricity tariff with cheaper off-peak windows each day, timed so your heat pump can pre-heat the home and hot water when power is cheapest. It is one of the better ways to keep heat pump running costs down.
Do I have to buy a heat pump from Octopus to get the Cosy tariff?
No. You can move onto a heat pump tariff such as Cosy Octopus once you have a heat pump installed, regardless of who fitted it. So you can use an independent installer and still benefit from a heat pump tariff afterwards.
Is Octopus cheaper than an independent heat pump installer?
Sometimes, but not always. Octopus can be competitive on standard homes, but an independent MCS installer may beat the quote on your specific home and offer shorter lead times. It is worth comparing at least two or three quotes.
Is the Octopus heat pump MCS certified?
Yes. Octopus installs MCS-certified air source heat pumps using MCS-certified installers, which is required to claim the £7,500 Boiler Upgrade Scheme grant.
Related Guides
Cosy Octopus Tariff
Cheap off-peak windows for heat pump homes: rates, hours and whether it is worth it.
Heat Pump Cost
Full price breakdown by type and home size, plus running costs.
Air Source Heat Pumps
Cost, best brands, running costs, and pros and cons for UK homes.
Heat Pump vs Boiler
Cost, running costs, lifespan and carbon compared, plus hybrids.
Sources
Last updated: June 2026
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He researches every battery and inverter brand against manufacturer datasheets, MCS and Ofgem data, and feedback from the MCS-certified installers in our directory before publishing.
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