Buderus Logatherm WLW176i-7 AR E vs Wolf CHA-07 SE/400V
SCOP (35 °C): Buderus Logatherm WLW176i-7 AR E 4.58, Wolf CHA-07 SE/400V 4.93. The Wolf CHA-07 SE/400V is better on 6 of 13 comparable points.
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Both models in detail
Who wins where
- Buderus Logatherm WLW176i-7 AR E
- Wolf CHA-07 SE/400V
Biggest differences
| Fact | Logatherm WLW176i-7 AR E | CHA-07 SE/400V |
|---|---|---|
| Refrigerant charge | 0.95 kg | 3.1 kg |
| Indoor unit sound power | 31 dB(A) | 52 dB(A) |
| Heating capacity (A7/W35) | 2.84 kW | 4.5 kW |
| Outdoor unit sound power | 42 dB(A) | 52 dB(A) |
| COP A7/W35 | 4.85 | 5.47 |
| Rated output 35 °C | 6.6 kW | 6 kW |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | BuderusLogatherm WLW176i-7 AR E | WolfCHA-07 SE/400V |
|---|---|---|
| General | ||
| Type (source) | Air-to-water1 | Air-to-water2 |
| Performance | ||
| Heating capacity (A7/W35) | 2.84 kW1 | 4.5 kW✓3 |
| Rated output 35 °C | 6.6 kW✓1 | 6 kW4 |
| Rated output 55 °C | 6.6 kW✓1 | 6 kW4 |
| Min. outdoor temperature | -22 °C1 | -22 °C3 |
| Efficiency | ||
| SCOP (35 °C) | 4.581 | 4.93✓4 |
| SCOP (55 °C) | 3.521 | 3.78✓4 |
| Seasonal efficiency ηs 35 °C | 180 %1 | 194 %✓4 |
| Seasonal efficiency ηs 55 °C | 138 %1 | 148 %✓4 |
| Energy label 35 °C | A+++1 | A+++4 |
| Energy label 55 °C | A++1 | A++4 |
| COP A7/W35 | 4.851 | 5.47✓2 |
| COP A2/W35 | – | 4.542 |
| COP A-7/W35 | – | 2.732 |
| Noise | ||
| Outdoor unit sound power | 42 dB(A)✓1 | 52 dB(A)4 |
| Indoor unit sound power | 31 dB(A)✓1 | 52 dB(A)4 |
| Refrigerant | ||
| Refrigerant | R2901 | R2902 |
| Refrigerant GWP | 31 | 33 |
| Refrigerant charge | 0.95 kg✓1 | 3.1 kg2 |
| Electrical | ||
| Max. power input | – | 4.8 kW2 |
| Connectivity & smart | ||
| SG Ready | – | Yes2 |
Frequently asked questions
Which is better: the Buderus Logatherm WLW176i-7 AR E or the Wolf CHA-07 SE/400V?
SCOP (35 °C): Buderus Logatherm WLW176i-7 AR E 4.58, Wolf CHA-07 SE/400V 4.93. The Wolf CHA-07 SE/400V is better on 6 of 13 comparable points.
What is the SCOP (35 °C) of the Buderus Logatherm WLW176i-7 AR E and the Wolf CHA-07 SE/400V?
Buderus Logatherm WLW176i-7 AR E: 4.58. Wolf CHA-07 SE/400V: 4.93.
Which is better on refrigerant charge: the Buderus Logatherm WLW176i-7 AR E or the Wolf CHA-07 SE/400V?
Buderus Logatherm WLW176i-7 AR E: 0.95 kg. Wolf CHA-07 SE/400V: 3.1 kg.
Which is better on indoor unit sound power: the Buderus Logatherm WLW176i-7 AR E or the Wolf CHA-07 SE/400V?
Buderus Logatherm WLW176i-7 AR E: 31 dB(A). Wolf CHA-07 SE/400V: 52 dB(A).
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- BoschCompress CS5800iAW 5 ORE-S (AW 5 OR-S + CS5800iAW 12 E)vsBuderusLogaplus M WLW176i-7 AR TP70 (Logatherm WLW-7 MB AR + WLW176i-12 TP70)
- BoschCompress CS5800iAW 5 ORE-S (AW 5 OR-S + CS5800iAW 12 E)vsBuderusLogaplus M WLW186i-7 AR TP70 (Logatherm WLW-7 MB AR + WLW186i-12 TP70)
- BoschCompress CS5800iAW 7 ORMB-S (AW 7 OR-S + CS5800iAW 12 MB)vsBuderusLogaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))
- BoschCompress CS6800iAW 7 ORM-S (AW 7 OR-S + CS6800iAW 12 M)vsBuderusLogaplus M WLW186i-7 AR E (W) (Logatherm WLW-7 MB AR + WLW186i-12 E (W))
How we collect and check this data →
Sources
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 18 Oct 2026
- European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026