Heat pumps · Compare

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.

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
Performance: Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) 20, Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) 20; Efficiency: Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) 19, Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) 21; Noise: Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) 86, Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) 94; Refrigerant: Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) 81, Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) 81; Connectivity & smart: Bosch Compress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB) 50, Buderus Logaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W)) 50

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 1000 models in this category; higher is better.

Technical specifications 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
Performance
Rated output 35 °C 6.6 kW 1 6.6 kW 1
Rated output 55 °C 6.6 kW 1 6.6 kW 1
Efficiency
SCOP (35 °C) 4.56 1 4.58 ✓ 1
SCOP (55 °C) 3.48 1 3.53 ✓ 1
Seasonal efficiency ηs 35 °C 180 % 1 180 % 1
Seasonal efficiency ηs 55 °C 136 % 1 138 % ✓ 1
COP A7/W35 4.82 ✓ 1 4.8 1
COP A2/W35 4 1 4.06 ✓ 1
COP A-7/W35 2.35 1 2.4 ✓ 1
SEER (cooling) 2.56 1 2.56 1
Noise
Outdoor unit sound power 42 dB(A) 1 42 dB(A) 1
Indoor unit sound power 37 dB(A) 1 31 dB(A) ✓ 1
Refrigerant
Refrigerant R290 1 R290 1
Refrigerant charge 0.95 kg 1 0.95 kg 1
Electrical
Max. power input 3.2 kW 1 3.2 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