RatiothermWP Max-AirMono F67
The Ratiotherm WP Max-AirMono F67 is an air-to-water heat pump with a SCOP of 4.88 (35 °C) and a sound power level of 56.1 dB(A). Under permitted development the limit is 42 dB(A) measured 1 m from the nearest neighbouring habitable-room window. Free-standing, the indicative minimum distance is 2.0 m; against a wall 2.9 m.
Key figures
- SCOP (35 °C)
- 4.88
Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.
- Outdoor unit sound power
- 56.1dB(A)Official source
- Refrigerant
- R290Official source
- Rated output 35 °C
- 76.9kWOfficial source
- Rated output 55 °C
- 62.4kWOfficial source
Rules in the UK
These rules are still being verified.
Minimum distance to your neighbour
Permitted development rights + MCS 020 planning standard · 1 m from the nearest neighbouring habitable-room window
Indicative calculation (hemispherical, no barriers). Not a substitute for an MCS 020 assessment. Source
Boiler Upgrade Scheme
UnknownFixed grant towards installation; check current amount with Ofgem. Ofgem
Technical specifications
| General | ||
|---|---|---|
| Type | Air-to-water | BAFA |
| Compressors | 2 | BAFA |
| Capacity control | Inverter | BAFA |
| Performance | ||
| Rated output 35 °C | 76.9 kW | BAFA |
| Rated output 55 °C | 62.4 kW | BAFA |
| Efficiency | ||
| SCOP (35 °C) | 4.88 | BAFA |
| SCOP (55 °C) | 4.04 | BAFA |
| Seasonal efficiency ηs 35 °C | 192.2 % | BAFA |
| Seasonal efficiency ηs 55 °C | 158.6 % | BAFA |
| COP A7/W35 | 4.81 | BAFA |
| COP A2/W35 | 4.15 | BAFA |
| COP A-7/W35 | 3.13 | BAFA |
| Noise | ||
| Outdoor unit sound power | 56.1 dB(A) | BAFA |
| Indoor unit sound power | 30 dB(A) | BAFA |
| Refrigerant | ||
| Refrigerant | R290 | BAFA |
| Refrigerant charge | 4.9 kg | BAFA |
| Electrical | ||
| Max. power input | 36 kW | BAFA |
| Connectivity & smart | ||
| SG Ready | No | BAFA |
Frequently asked questions
Can I install the Ratiotherm WP Max-AirMono F67 without planning permission?
Under Permitted development rights + MCS 020 planning standard the unit must not exceed 42 dB(A) 1 m from the nearest neighbouring habitable-room window. With a sound power of 56.1 dB(A) that indicatively means 2.0 m free-standing, 2.9 m against a wall or 4.0 m in a corner. Your MCS installer must confirm this.
Which refrigerant does the Ratiotherm WP Max-AirMono F67 use?
The Ratiotherm WP Max-AirMono F67 uses R290.