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Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) vs Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))

SCOP (35 °C): Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) 4.56, Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) 4.58. The Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) is better on 6 of 14 comparable points.

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Who wins where

  • Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB)
  • Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))
PerformanceEfficiencyNoiseRefrigerantConnectivity & smart

Biggest differences

FactCompress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB)Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))
Indoor unit sound power37 dB(A)31 dB(A)
COP A-7/W352.352.4
All specifications ↓

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

BoschCompress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB)BuderusLogaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))
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 °C6.6 kW16.6 kW1
Rated output 55 °C6.6 kW16.6 kW1
Efficiency
SCOP (35 °C)4.5614.58✓1
SCOP (55 °C)3.4813.53✓1
Seasonal efficiency ηs 35 °C180 %1180 %1
Seasonal efficiency ηs 55 °C136 %1138 %✓1
COP A7/W354.82✓14.81
COP A2/W35414.06✓1
COP A-7/W352.3512.4✓1
SEER (cooling)2.5612.561
Noise
Outdoor unit sound power42 dB(A)142 dB(A)1
Indoor unit sound power37 dB(A)131 dB(A)✓1
Refrigerant
RefrigerantR2901R2901
Refrigerant charge0.95 kg10.95 kg1
Electrical
Max. power input3.2 kW13.2 kW1
Connectivity & smart
SG ReadyYes1Yes1

Frequently asked questions

Which is better: the Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) or the Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))?

SCOP (35 °C): Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) 4.56, Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) 4.58. The Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) is better on 6 of 14 comparable points.

What is the SCOP (35 °C) of the Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) and the Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))?

Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB): 4.56. Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)): 4.58.

Which is better on indoor unit sound power: the Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) or the Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))?

Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)): 31 dB(A). Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB): 37 dB(A).

Which is better on COP A-7/W35: the Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) or the Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))?

Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)): 2.4. Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB): 2.35.

How we collect and check this data →

Sources

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