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 | 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 | 3 years standard; extendable to 7 years via accredited installer | £9,500–£14,500 installed before BUS grant | View → |
| NIBE | Strong | 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 → |
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 fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.