Mitsubishi Electric Ecodan Air Source Heat Pump Cost in South East England
£9,000 to £14,000 installed before the grant, or £1,500 to £6,500 after a £7,500 grant.
Prices are PumpSwap's indicative figures for Mitsubishi Electric Ecodan, not quotes. Boiler Upgrade Scheme grant (£9,000 for off-gas homes on oil or LPG).
Mitsubishi Electric builds its Ecodan heat pumps in Livingston, Scotland. The current R290 range runs from 5 to 12 kW, reaches flow temperatures up to 75°C for homes keeping their radiators, and the 8.5, 10 and 12 kW sizes all come in single phase.
Mitsubishi Electric Ecodan models and running costs in South East England
Running costs for 10,000 kWh of heat a year at 26.88p per kWh (Ofgem price cap for South Eastern England, 1 October to 31 December 2026), at a 45°C design flow temperature: the midpoint of each model's MCS-certified 35°C and 55°C SCOPs.
| Model | Size | SCOP 35°C / 55°C | Installed, before grant | Running cost a year |
|---|---|---|---|---|
| Ecodan R290 8.5kW 3-4 bed semi or detached | 8.5 kW | 4.47 / 3.51 | £9,000 to £13,000 | £675 |
| Ecodan R290 10kW larger or older detached homes | 10 kW | 4.62 / 3.48 | £10,000 to £14,000 | £665 |
Pros
- Made in Livingston, Scotland
- R290 range reaches 75°C flow, so existing radiators can often stay
- Quiet Mark certified (R290 8.5, 10 and 12 kW)
- The 8.5, 10 and 12 kW sizes all come in single phase
Cons
- Standard warranty is 3 years; 7 needs a top-tier Mitsubishi installer
- Single-phase 10 and 12 kW units need a dedicated 32 A or 40 A supply
Best for: Homes keeping their existing radiators, from a UK-built range. Warranty: 3 years, up to 7 with conditions.
What South East England means for your heat pump
- Climate. January averages 7.8°C by day and 1.9°C at night, with 43 days of air frost a year (Met Office 1991-2020; UK 1.2°C and 53 days). The heat loss survey sizes the unit for your local design temperature.
- Gas grid. 16% of homes here are off the gas grid (2024 estimate; Great Britain 16%). Homes on oil or LPG with no mains gas can claim £9,000 until 31 March 2027.
- Grant. Boiler Upgrade Scheme grant (£9,000 for off-gas homes on oil or LPG).
Full detail for the region, including planning rules and running costs against gas: air source heat pump cost in South East England.
Mitsubishi Electric Ecodan prices in towns across South East England
Other brands in South East England
Mitsubishi Electric Ecodan in other regions: London, South West England, East of England, East Midlands, West Midlands, Yorkshire and the Humber, North West England, North East England, Scotland, Wales, Northern Ireland.
Frequently asked questions
How much does a Mitsubishi Electric Ecodan heat pump cost in South East England?
£9,000 to £14,000 installed before the grant, or £1,500 to £6,500 after a £7,500 grant. These are PumpSwap's indicative 2026 prices; your installer's survey sets the real figure.
Can I get the grant on a Mitsubishi Electric Ecodan heat pump in South East England?
Yes, if your home qualifies: the Boiler Upgrade Scheme is not tied to a brand, as long as the installer is MCS-certified. It comes straight off the quote.
What would a Mitsubishi Electric Ecodan heat pump cost to run in South East England?
Roughly £665 a year for the Ecodan R290 10kW to deliver 10,000 kWh of heat at 26.88p per kWh (Ofgem price cap for South Eastern England, 1 October to 31 December 2026). That assumes a 45°C design flow temperature, estimated from its MCS-certified SCOPs of 4.62 at 35°C and 3.48 at 55°C. A lower flow temperature, with bigger radiators or underfloor heating, costs less to run.
Who installs Mitsubishi Electric Ecodan heat pumps in South East England?
MCS-certified installers across South East England fit Mitsubishi Electric Ecodan. Ask for a heat loss survey and compare two or three quotes on the same basis: unit size, cylinder, radiator changes and warranty.
Heat pump guides for South East England
- Air source heat pump cost in South East England
- Heat pump grants in South East England and how to claim them
- Air source heat pump installers in South East England
- Air source heat pump installation cost in the UK
- The best air source heat pumps in the UK, compared
- The £7,500 Boiler Upgrade Scheme, explained
Prices, models, efficiency and warranties are indicative and change; confirm with your MCS-certified installer. Climate: Met Office 1991-2020 averages. Energy prices: Ofgem price cap for South Eastern England, 1 October to 31 December 2026.
Where are you?
See indicative costs and local installers for your area