Mitsubishi Ecodan Review UK (2026)
Quick Answer
Compact, low-noise Japanese heat pump, the most-installed ASHP brand in the UK.
Data verified April 2026. UK installed pricing varies with installer, site and package.
At a Glance
| Origin | Japan (Mitsubishi Electric, since the early 2000s for residential heat pumps) |
| UK support | Very strong, largest installer base of any ASHP brand in the UK |
| Capacity / sizing | 5 kW – 14 kW (Ecodan PUZ/PUD ranges) |
| SCOP | 4.3–4.6 (PUZ-WM, A7/W35) |
| Warranty | 7 years standard on accredited installs (Mitsubishi Electric Hybrid+ programme) |
| Indicative UK price | £9,000–£13,500 installed before BUS grant |
Strengths
- Most compact outdoor unit in its class, easier siting near boundaries
- Lowest sound rating among mainstream brands, valuable for tight urban plots
- Largest UK installer network, quotes are competitive and service is fast
- 7-year standard warranty on accredited installations
Weaknesses
- R32 refrigerant across most of the range (not R290 like Vaillant/newer Samsung)
- Maximum flow temp 60°C on most models, older rads may need upgrading
- Monobloc only, some installers prefer split systems
Who Mitsubishi Ecodan Suits Best
Most UK homes installing their first heat pump, the default recommendation from many installers for a reason. Strong choice where noise or boundary distance matters.
When to Avoid
You specifically need R290 refrigerant or need >65°C flow temperatures without a hybrid.
Popular Models
- Ecodan PUZ-WM50VHA (5 kW)
- Ecodan PUZ-WM85VAA (8.5 kW)
- Ecodan PUZ-WM112VAA (11.2 kW)
Frequently Asked Questions
How much does a Mitsubishi Ecodan cost in the UK?
Ecodan installations typically cost £9,000–£13,500 before the £7,500 BUS grant. The 8.5 kW PUZ-WM85VAA is the most-installed UK residential model.
Is Ecodan suitable for small gardens?
Yes. Ecodan outdoor units are among the most compact in the UK market, making them a strong choice for terraced properties or tight boundaries. Check the minimum boundary distance required for noise compliance.
What flow temperature does Ecodan support?
Most Ecodan models support up to 60°C flow temperature. For older homes needing 65–70°C, a high-temperature variant or alternative brand (Daikin Altherma HT, Vaillant aroTHERM plus) may suit better.
How long is the Ecodan warranty?
7 years standard on accredited installations via the Mitsubishi Electric Hybrid+ installer programme, making it one of the longer standard warranties in the UK heat pump market.
Compare with Other Heat Pump Brands
| Brand | UK support | Warranty | Indicative price | |
|---|---|---|---|---|
| Vaillant | Strong, large UK installer and service network, significant G.A.S. partnership | 5 years standard; up to 10 years via accredited installer (G.A.S.) | £9,000–£14,000 installed before BUS grant (-£7,500) | View → |
| Daikin | Very strong, large UK office, Daikin Sustainable Home Centre, extensive installer network | 3 years standard; extendable to 7 years via accredited installer | £9,500–£14,500 installed before BUS grant | View → |
| NIBE | Strong, UK office plus VIP+ installer network (extended warranty programme) | 5 years standard; up to 10 years via VIP+ accredited installer | £10,000–£15,000 installed before BUS grant (air source); significantly more for ground source with boreholes | View → |
| Grant Aerona | Strong in rural UK and off-gas areas, established oil-boiler heritage and installer base | 7 years on the Aerona R290 with registration | £8,500–£13,500 installed before BUS grant (-£7,500) | View → |
| Viessmann Vitocal | Established UK office and trained installer network, strong technical support | 5 years standard; extendable via accredited installers | £9,500–£14,500 installed before BUS grant | View → |
| Panasonic Aquarea | Good UK distribution and installer network, established air conditioning heritage | 5 years standard; up to 7 via accredited installers | £8,500–£13,000 installed before BUS grant | View → |
| Samsung EHS | Growing UK installer network, established air conditioning presence | 5 years standard; up to 7 via accredited installers | £8,000–£12,500 installed before BUS grant | View → |
| LG Therma V | Growing UK network, established HVAC and air conditioning presence | 5 years standard; up to 7 via accredited installers | £8,500–£13,000 installed before BUS grant | View → |
| Aira | Direct Aira-employed installers and aftercare, not a traditional dealer network | Long warranty and performance guarantee as part of the Aira package | Upfront from around £6,500 net after grant, or a monthly subscription | View → |
| Bosch Compress | Strong, leans on the large Worcester Bosch heating installer base in the UK | Up to 7 years via accredited installers | £9,000–£14,000 installed before BUS grant | View → |
| Ideal Heating | Strong UK manufacturing base and a large existing boiler installer network | Up to 7 years via accredited installers | £8,500–£13,000 installed before BUS grant | View → |
| Midea | Growing UK distribution; Midea also manufactures units badged by other brands | 5 years standard; extendable via accredited installers | £7,500–£12,000 installed before BUS grant | View → |
Get a Quote Including Mitsubishi Ecodan
Most MCS-certified installers carry multiple heat pump brands — ask for a quote specifying Mitsubishi Ecodan if you want a heat pump from this brand. Use the form below to reach local installers.
Sources
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.