CHOFU AEYC-1049ZU-CH1 vs STIEBEL ELTRON WPL-A 10 HK 400 Premium
SCOP (35 °C): CHOFU AEYC-1049ZU-CH1 4.67, STIEBEL ELTRON WPL-A 10 HK 400 Premium 4.31. The CHOFU AEYC-1049ZU-CH1 is better on 10 of 15 comparable points.
Who wins where
- CHOFU AEYC-1049ZU-CH1
- STIEBEL ELTRON WPL-A 10 HK 400 Premium
Biggest differences
| Fact | AEYC-1049ZU-CH1 | WPL-A 10 HK 400 Premium |
|---|---|---|
| Refrigerant GWP | 3 | 698 |
| Refrigerant charge | 1.15 kg | 5 kg |
| COP A-7/W35 | 2.44 | 3.36 |
| Heating capacity (A7/W35) | 10 kW | 8.24 kW |
| Seasonal efficiency ηs 35 °C | 184 % | 169 % |
| SCOP (35 °C) | 4.67 | 4.31 |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | CHOFUAEYC-1049ZU-CH1 | STIEBEL ELTRONWPL-A 10 HK 400 Premium |
|---|---|---|
| Grants & market | ||
| Boiler Upgrade Scheme | £7,500 – £9,000 | £7,500 – £9,000 |
| General | ||
| Type (source) | Air-to-water 1 | Air-to-water 1 |
| Performance | ||
| Heating capacity (A7/W35) | 10 kW ✓ 2 | 8.24 kW 3 |
| Rated output 35 °C | 11 kW 1 | 11.2 kW ✓ 1 |
| Rated output 55 °C | 11 kW 1 | 11.6 kW ✓ 1 |
| Efficiency | ||
| SCOP (35 °C) | 4.67 ✓ 1 | 4.31 1 |
| SCOP (55 °C) | 3.6 ✓ 1 | 3.45 1 |
| Seasonal efficiency ηs 35 °C | 184 % ✓ 1 | 169 % 1 |
| Seasonal efficiency ηs 55 °C | 141.2 % ✓ 1 | 135 % 1 |
| Energy label 35 °C | A, , , 2 | A, , 3 |
| Energy label 55 °C | A, , 2 | A, , 3 |
| COP A7/W35 | 4.95 ✓ 1 | 4.61 1 |
| COP A2/W35 | 3.81 1 | 3.82 ✓ 1 |
| COP A-7/W35 | 2.44 1 | 3.36 ✓ 1 |
| Noise | ||
| Outdoor unit sound power | 54 dB(A) ✓ 1 | 55 dB(A) 1 |
| Refrigerant | ||
| Refrigerant | R290 1 | R452B 1 |
| Refrigerant GWP | 3 ✓ 2 | 698 3 |
| Refrigerant charge | 1.15 kg ✓ 1 | 5 kg 1 |
| Electrical | ||
| Max. power input | 5.52 kW 1 | 5.5 kW 1 |
| Connectivity & smart | ||
| SG Ready | Yes 1 | Yes 1 |
| Grants & market | ||
| ISDE grant (NL) | 3,475 € ✓ 4 | 3,275 € 4 |
Sources
- 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 29 Sept 2026
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed 29 Sept 2026
- ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 28 Sept 2026