Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) vs Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)
SCOP (35 °C): Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) 5.01, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 4.8. The Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) is better on 7 of 14 comparable points.
Both models in detail
Who wins where
- Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi)
- Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)
Biggest differences
| Fact | Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) | Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) |
|---|---|---|
| SEER (cooling) | 4.46 | 2.7 |
| Indoor unit sound power | 40 dB(A) | 31 dB(A) |
| COP A-7/W35 | 3.19 | 2.5 |
| COP A2/W35 | 3.82 | 4.84 |
| Refrigerant charge | 1.37 kg | 1.7 kg |
| Outdoor unit sound power | 49 dB(A) | 42 dB(A) |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | BoschCompress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) | BuderusLogaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) |
|---|---|---|
| Grants & market | ||
| Boiler Upgrade Scheme | £7,500 – £9,000 | £7,500 – £9,000 |
| General | ||
| Type (source) | Air-to-water1 | Air-to-water1 |
| Performance | ||
| Rated output 35 °C | 10 kW1 | 10 kW1 |
| Rated output 55 °C | 10 kW1 | 10 kW1 |
| Efficiency | ||
| SCOP (35 °C) | 5.01✓1 | 4.81 |
| SCOP (55 °C) | 3.93✓1 | 3.621 |
| Seasonal efficiency ηs 35 °C | 197 %✓1 | 188 %1 |
| Seasonal efficiency ηs 55 °C | 154 %✓1 | 142 %1 |
| COP A7/W35 | 4.731 | 4.84✓1 |
| COP A2/W35 | 3.821 | 4.84✓1 |
| COP A-7/W35 | 3.19✓1 | 2.51 |
| SEER (cooling) | 4.46✓1 | 2.71 |
| Noise | ||
| Outdoor unit sound power | 49 dB(A)1 | 42 dB(A)✓1 |
| Indoor unit sound power | 40 dB(A)1 | 31 dB(A)✓1 |
| Refrigerant | ||
| Refrigerant | R2901 | R2901 |
| Refrigerant charge | 1.37 kg✓1 | 1.7 kg1 |
| Electrical | ||
| Max. power input | 4.7 kW1 | 7.4 kW1 |
| Connectivity & smart | ||
| SG Ready | Yes1 | Yes1 |
Frequently asked questions
Which is better: the Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) or the Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)?
SCOP (35 °C): Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) 5.01, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 4.8. The Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) is better on 7 of 14 comparable points.
What is the SCOP (35 °C) of the Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) and the Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)?
Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi): 5.01. Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E): 4.8.
Which is better on SEER (cooling): the Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) or the Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)?
Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi): 4.46. Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E): 2.7.
Which is better on indoor unit sound power: the Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi) or the Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)?
Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E): 31 dB(A). Bosch Compress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi): 40 dB(A).
Related comparisons
- BoschCompress CS3800iAW 10 OM-T (CS3800iAW O-T + AWMi)vsBuderusLogaplus M WLW176i-10 AR TP70 (Logatherm WLW-10 MB AR + WLW176i-12 TP70)
- BoschCompress CS5800iAW 10 ORE-T (AW 10 OR-T + CS5800iAW 12 E)vsBuderusLogaplus M WLW166i-10 MBB AR E (WLW-10 MBB AR P3 & Logatherm WLW176i.2 E)
- BoschCompress CS5800iAW 10 ORM-T (AW 10 OR-T + CS5800iAW 12 M)vsBuderusLogaplus M WLW166i-10 MBB AR E (WLW-10 MBB AR P3 & Logatherm WLW176i.2 E)
- BoschCompress CS6800iAW 10 ORE-T (AW 10 OR-T + CS6800iAW 12 E)vsBuderusLogaplus M WLW166i-10 MBB AR E (WLW-10 MBB AR P3 & Logatherm WLW176i.2 E)
- BoschCompress CS6800iAW 10 ORMB-T (AW 10 OR-T + CS6800iAW 12 MB)vsBuderusLogaplus M WLW166i-10 MBB AR E (WLW-10 MBB AR P3 & Logatherm WLW176i.2 E)
- BuderusLogatherm WLW176i-10 AR EvsKermix-change dynamic pro M
How we collect and check this data →
Sources
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026