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Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) vs Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)

SCOP (35 °C): Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) 5.04, Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E) 4.67. The Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) is better on 9 of 14 comparable points.

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Who wins where

  • Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi)
  • Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)
PerformanceEfficiencyNoiseRefrigerantConnectivity & smart

Biggest differences

FactCompress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi)Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)
SEER (cooling)4.412.78
COP A2/W353.774.71
COP A-7/W352.992.4
Refrigerant charge1.37 kg1.7 kg
Outdoor unit sound power51 dB(A)45 dB(A)
Seasonal efficiency ηs 55 °C152 %137 %
All specifications ↓

Score per area = position (0–100) relative to all 1350 models in this category; higher is better.

BoschCompress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi)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
General
Type (source)Air-to-water1Air-to-water1
Performance
Rated output 35 °C12.5 kW✓112.2 kW1
Rated output 55 °C12.5 kW✓112 kW1
Efficiency
SCOP (35 °C)5.04✓14.671
SCOP (55 °C)3.88✓13.51
Seasonal efficiency ηs 35 °C199 %✓1184 %1
Seasonal efficiency ηs 55 °C152 %✓1137 %1
COP A7/W354.4614.8✓1
COP A2/W353.7714.71✓1
COP A-7/W352.99✓12.41
SEER (cooling)4.41✓12.781
Noise
Outdoor unit sound power51 dB(A)145 dB(A)✓1
Indoor unit sound power34 dB(A)131 dB(A)✓1
Refrigerant
RefrigerantR2901R2901
Refrigerant charge1.37 kg✓11.7 kg1
Electrical
Max. power input6.2 kW17.4 kW1
Connectivity & smart
SG ReadyYes1Yes1

Frequently asked questions

Which is better: the Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) or the Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)?

SCOP (35 °C): Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) 5.04, Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E) 4.67. The Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) is better on 9 of 14 comparable points.

What is the SCOP (35 °C) of the Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) and the Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)?

Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi): 5.04. Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E): 4.67.

Which is better on SEER (cooling): the Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) or the Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)?

Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi): 4.41. Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E): 2.78.

Which is better on COP A2/W35: the Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi) or the Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E)?

Buderus Logaplus M WLW176i-12 AR E (Logatherm WLW-12 MB AR + WLW176i-12 E): 4.71. Bosch Compress CS3800iAW 13 OE-T (CS3800iAW 13 O-T + AWEi): 3.77.

How we collect and check this data →

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 18 Oct 2026