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Buderus Logatherm WLW176i-7 AR E vs Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E

SCOP (35 °C): Buderus Logatherm WLW176i-7 AR E 4.58, Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E 4.54. The Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E is better on 6 of 12 comparable points.

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Who wins where

  • Buderus Logatherm WLW176i-7 AR E
  • Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E
PerformanceEfficiencyNoiseRefrigerant

Biggest differences

FactLogatherm WLW176i-7 AR EEcodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E
Heating capacity (A7/W35)2.84 kW5.31 kW
Refrigerant charge0.95 kg0.6 kg
Indoor unit sound power31 dB(A)40 dB(A)
Outdoor unit sound power42 dB(A)54 dB(A)
Rated output 35 °C6.6 kW8 kW
Rated output 55 °C6.6 kW8 kW
All specifications ↓

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

BuderusLogatherm WLW176i-7 AR EMitsubishi ElectricEcodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E
Grants & market
SEAI Heat Pump System Grant€14,500€14,500
General
Type (source)Air-to-water1Air-to-water2
Performance
Heating capacity (A7/W35)2.84 kW15.31 kW✓3
Rated output 35 °C6.6 kW18 kW✓2
Rated output 55 °C6.6 kW18 kW✓2
Min. outdoor temperature-22 °C1–
Efficiency
SCOP (35 °C)4.58✓14.542
SCOP (55 °C)3.5213.6✓2
Seasonal efficiency ηs 35 °C180 %✓1179 %2
Seasonal efficiency ηs 55 °C138 %1141 %✓2
Energy label 35 °CA+++1A+++3
Energy label 55 °CA++1A++3
COP A7/W354.85✓14.82
COP A2/W35–4.032
COP A-7/W35–2.62
Noise
Outdoor unit sound power42 dB(A)✓154 dB(A)2
Indoor unit sound power31 dB(A)✓140 dB(A)2
Refrigerant
RefrigerantR2901R2902
Refrigerant GWP3133
Refrigerant charge0.95 kg10.6 kg✓2
Electrical
Max. power input–5.13 kW2
Connectivity & smart
SG Ready–Yes2

Frequently asked questions

Which is better: the Buderus Logatherm WLW176i-7 AR E or the Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E?

SCOP (35 °C): Buderus Logatherm WLW176i-7 AR E 4.58, Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E 4.54. The Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E is better on 6 of 12 comparable points.

What is the SCOP (35 °C) of the Buderus Logatherm WLW176i-7 AR E and the Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E?

Buderus Logatherm WLW176i-7 AR E: 4.58. Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E: 4.54.

Which is better on heating capacity (A7/W35): the Buderus Logatherm WLW176i-7 AR E or the Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E?

Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E: 5.31 kW. Buderus Logatherm WLW176i-7 AR E: 2.84 kW.

Which is better on refrigerant charge: the Buderus Logatherm WLW176i-7 AR E or the Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E?

Mitsubishi Electric Ecodan PUZ-WZ85VAA(-BS) + EHPT17X-*M*E: 0.6 kg. Buderus Logatherm WLW176i-7 AR E: 0.95 kg.

How we collect and check this data →

Sources

  1. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
  2. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
  3. Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026