Expert comparison of Japan's two leading heat pump manufacturers. We install both brands - here's our honest, unbiased analysis.
Both are premium choices. Choose Mitsubishi Ecodan if you're in an exposed/cold location or want the best cold-weather performance. Choose Daikin Altherma if you prioritize ultra-quiet operation, value for money, or need high-temperature output for existing radiators.
As multi-brand installers, we recommend both regularly based on specific property requirements. Book a free survey for personalized advice.
Premium Japanese Engineering
Altherma 3 M - Market leading
Ultra-quiet - like a whisper
Operates well in cold
After £7.5k grant: £1.5k-£6.5k
Extendable warranty available
Cold Climate Specialists
Ecodan Split - Excellent rating
Quiet - like a library
100% capacity at -15°C (Zubadan)
After £7.5k grant: £2.5k-£7.5k
Parts & labour comprehensive
| Feature | Daikin Altherma | Mitsubishi Ecodan |
|---|---|---|
| Max SCOP Rating | 5.0 ⭐ | 4.9 |
| Noise Level | 35 dB ⭐ | 42 dB |
| Cold Weather (-15°C) | Good | 100% capacity ⭐ |
| Smart Control | Madoka/App | MELCloud ⭐ |
| Price Point | £9-14k ⭐ | £10-15k |
| Max Flow Temp | 70°C ⭐ | 60°C |
| Warranty Standard | 5-7 years ⭐ | 5 years |
| Installation Ease | Excellent | Excellent |
| Parts Availability | Excellent | Excellent |
| Reliability Rating | 5/5 | 5/5 |
⭐ = Winner in this category
Both brands offer exceptional efficiency. Mitsubishi's Ecodan range achieves SCOP ratings up to 4.9, while Daikin's Altherma 3 M reaches SCOP 5.0. In real-world Dorset conditions, the difference is minimal - both deliver around 70% savings on heating bills compared to oil or LPG boilers.
Daikin Altherma systems typically operate at 35dB, while Mitsubishi Ecodan units run at 42dB. This makes Daikin slightly quieter - about the volume of a whisper versus a quiet library. Both are suitable for residential areas and comply with noise regulations.
Mitsubishi's Zubadan technology gives it an edge in extreme cold, maintaining 100% capacity at -15°C and working down to -28°C. Daikin Altherma operates efficiently to -25°C. For typical Dorset winters (rarely below -5°C), both perform excellently.
Daikin systems typically range from £9,000-£14,000 installed, while Mitsubishi ranges from £10,000-£15,000. After up to £9,000 BUS grant, Daikin costs £1,500-£6,500 and Mitsubishi £2,500-£7,500. The price difference is usually 10-15%, with Mitsubishi commanding a premium for Zubadan technology.
Both offer 5-year parts and labour warranties as standard. Daikin offers an optional 7-year extended warranty, while Mitsubishi maintains their 5-year coverage. Both brands have excellent reliability records with minimal failure rates.
As certified installers for both Daikin and Mitsubishi, we'll recommend the perfect system for YOUR property and needs - not just the brand we prefer.