Power World PW030-DKZLRS-E/S vs STIEBEL ELTRON WPL-A 05.2 Plus HK 230
SCOP (35 °C): Power World PW030-DKZLRS-E/S 4.64, STIEBEL ELTRON WPL-A 05.2 Plus HK 230 5.35. The STIEBEL ELTRON WPL-A 05.2 Plus HK 230 is better on 10 of 14 comparable points.
Who wins where
- Power World PW030-DKZLRS-E/S
- STIEBEL ELTRON WPL-A 05.2 Plus HK 230
Biggest differences
| Fact | PW030-DKZLRS-E/S | WPL-A 05.2 Plus HK 230 |
|---|---|---|
| Heating capacity (A7/W35) | 4.99 kW | 2.77 kW |
| Refrigerant charge | 0.8 kg | 1.4 kg |
| Outdoor unit sound power | 53 dB(A) | 43 dB(A) |
| Seasonal efficiency ηs 55 °C | 136 % | 160 % |
| SCOP (55 °C) | 3.48 | 4.08 |
| Seasonal efficiency ηs 35 °C | 182.7 % | 211 % |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | Power WorldPW030-DKZLRS-E/S | STIEBEL ELTRONWPL-A 05.2 Plus HK 230 |
|---|---|---|
| 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) | 4.99 kW ✓ 2 | 2.77 kW 3 |
| Rated output 35 °C | 5.82 kW 1 | 5.92 kW ✓ 1 |
| Rated output 55 °C | 5.59 kW 1 | 5.86 kW ✓ 1 |
| Min. outdoor temperature | – | -22 °C 3 |
| Efficiency | ||
| SCOP (35 °C) | 4.64 1 | 5.35 ✓ 1 |
| SCOP (55 °C) | 3.48 1 | 4.08 ✓ 1 |
| Seasonal efficiency ηs 35 °C | 182.7 % 1 | 211 % ✓ 1 |
| Seasonal efficiency ηs 55 °C | 136 % 1 | 160 % ✓ 1 |
| Energy label 35 °C | A, , , 2 | A, , , 3 |
| Energy label 55 °C | A, , 2 | A, , , 3 |
| COP A7/W35 | 5.08 1 | 5.48 ✓ 1 |
| COP A2/W35 | 4.55 1 | 4.72 ✓ 1 |
| COP A-7/W35 | 3.33 1 | 3.47 ✓ 1 |
| Noise | ||
| Outdoor unit sound power | 53 dB(A) 1 | 43 dB(A) ✓ 1 |
| Refrigerant | ||
| Refrigerant | R290 1 | R290 1 |
| Refrigerant GWP | 3 2 | 3 3 |
| Refrigerant charge | 0.8 kg ✓ 1 | 1.4 kg 1 |
| Electrical | ||
| Max. power input | 3.1 kW 1 | 3.24 kW 1 |
| Connectivity & smart | ||
| SG Ready | Yes 1 | Yes 1 |
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