Bosch Compress CS6800iAW 12 ORMB-T (AW 12 OR-T + CS6800iAW 12 MB) vs Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)
SCOP (35 °C): Bosch Compress CS6800iAW 12 ORMB-T (AW 12 OR-T + CS6800iAW 12 MB) 4.64, Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E) 4.8. The Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E) is better on 6 of 14 comparable points.
Who wins where
- Bosch Compress CS6800iAW 12 ORMB-T (AW 12 OR-T + CS6800iAW 12 MB)
- Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)
Biggest differences
| Fact | Compress CS6800iAW 12 ORMB-T (AW 12 OR-T + CS6800iAW 12 MB) | Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E) |
|---|---|---|
| Indoor unit sound power | 37 dB(A) | 31 dB(A) |
| Refrigerant charge | 1.6 kg | 1.7 kg |
| COP A2/W35 | 4.45 | 4.71 |
| SCOP (35 °C) | 4.64 | 4.8 |
Score per area = position (0–100) relative to all 1000 models in this category; higher is better.
| Technical specifications | BoschCompress CS6800iAW 12 ORMB-T (AW 12 OR-T + CS6800iAW 12 MB) | BuderusLogaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E) |
|---|---|---|
| Grants & market | ||
| Boiler Upgrade Scheme | £7,500 – £9,000 | £7,500 – £9,000 |
| Performance | ||
| Rated output 35 °C | 12.2 kW 1 | 12.2 kW 1 |
| Rated output 55 °C | 12 kW 1 | 12 kW 1 |
| Efficiency | ||
| SCOP (35 °C) | 4.64 1 | 4.8 ✓ 1 |
| SCOP (55 °C) | 3.48 1 | 3.5 ✓ 1 |
| Seasonal efficiency ηs 35 °C | 183 % 1 | 184 % ✓ 1 |
| Seasonal efficiency ηs 55 °C | 136 % 1 | 137 % ✓ 1 |
| COP A7/W35 | 4.81 ✓ 1 | 4.8 1 |
| COP A2/W35 | 4.45 1 | 4.71 ✓ 1 |
| COP A-7/W35 | 2.44 ✓ 1 | 2.4 1 |
| SEER (cooling) | 2.78 1 | 2.78 1 |
| Noise | ||
| Outdoor unit sound power | 45 dB(A) 1 | 45 dB(A) 1 |
| Indoor unit sound power | 37 dB(A) 1 | 31 dB(A) ✓ 1 |
| Refrigerant | ||
| Refrigerant | R290 1 | R290 1 |
| Refrigerant charge | 1.6 kg ✓ 1 | 1.7 kg 1 |
| Electrical | ||
| Max. power input | 7.5 kW 1 | 7.4 kW 1 |
| Connectivity & smart | ||
| SG Ready | Yes 1 | Yes 1 |
Sources
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026