Heat pumps · Compare

Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) vs Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)

SCOP (35 °C): Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) 5.01, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 4.8. The Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) is better on 7 of 14 comparable points.

Who wins where

  • Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi)
  • Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)
PerformanceEfficiencyNoiseRefrigerantConnectivity & smart
Performance: Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) 49, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 49; Efficiency: Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) 59, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 39; Noise: Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) 77, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 94; Refrigerant: Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) 51, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 33; Connectivity & smart: Bosch Compress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) 50, Buderus Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E) 50

Biggest differences

FactCompress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi)Logaplus M WLW176i-10 AR E (Logatherm WLW-10 MB AR + WLW176i-12 E)
SEER (cooling)4.462.7
COP A-7/W353.192.5
COP A2/W353.824.84
Refrigerant charge1.37 kg1.7 kg
Outdoor unit sound power49 dB(A)42 dB(A)
Indoor unit sound power34 dB(A)31 dB(A)
All specifications ↓

Score per area = position (0–100) relative to all 1000 models in this category; higher is better.

Technical specifications BoschCompress CS3800iAW 10 OE-T (CS3800iAW 10 O-T + AWEi) 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
Performance
Rated output 35 °C 10 kW 1 10 kW 1
Rated output 55 °C 10 kW 1 10 kW 1
Efficiency
SCOP (35 °C) 5.01 ✓ 1 4.8 1
SCOP (55 °C) 3.93 ✓ 1 3.62 1
Seasonal efficiency ηs 35 °C 197 % ✓ 1 188 % 1
Seasonal efficiency ηs 55 °C 154 % ✓ 1 142 % 1
COP A7/W35 4.73 1 4.84 ✓ 1
COP A2/W35 3.82 1 4.84 ✓ 1
COP A-7/W35 3.19 ✓ 1 2.5 1
SEER (cooling) 4.46 ✓ 1 2.7 1
Noise
Outdoor unit sound power 49 dB(A) 1 42 dB(A) ✓ 1
Indoor unit sound power 34 dB(A) 1 31 dB(A) ✓ 1
Refrigerant
Refrigerant R290 1 R290 1
Refrigerant charge 1.37 kg ✓ 1 1.7 kg 1
Electrical
Max. power input 4.7 kW 1 7.4 kW 1
Connectivity & smart
SG Ready Yes 1 Yes 1

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026