STIEBEL ELTRON WPL-A 07.2 Plus HK 230 vs Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001
SCOP (35 °C): STIEBEL ELTRON WPL-A 07.2 Plus HK 230 5.08, Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 4.44. The STIEBEL ELTRON WPL-A 07.2 Plus HK 230 is better on 10 of 15 comparable points.
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Both models in detail
Who wins where
- STIEBEL ELTRON WPL-A 07.2 Plus HK 230
- Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001
Biggest differences
| Fact | WPL-A 07.2 Plus HK 230 | Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 |
|---|---|---|
| Heating capacity (A7/W35) | 3.05 kW | 5.6 kW |
| Rated output 55 °C | 8 kW | 6.17 kW |
| Rated output 35 °C | 8 kW | 6.47 kW |
| Refrigerant charge | 1.4 kg | 1.2 kg |
| SCOP (35 °C) | 5.08 | 4.44 |
| Seasonal efficiency ηs 35 °C | 200 % | 176 % |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | STIEBEL ELTRONWPL-A 07.2 Plus HK 230 | ViessmannVitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 |
|---|---|---|
| Grants & market | ||
| SEAI Heat Pump System Grant | €14,500 | €14,500 |
| General | ||
| Type (source) | Air-to-water1 | Air-to-water1 |
| Performance | ||
| Heating capacity (A7/W35) | 3.05 kW2 | 5.6 kW✓3 |
| Rated output 35 °C | 8 kW✓4 | 6.47 kW1 |
| Rated output 55 °C | 8 kW✓4 | 6.17 kW1 |
| Min. outdoor temperature | -22 °C✓2 | -20 °C3 |
| Efficiency | ||
| SCOP (35 °C) | 5.08✓4 | 4.441 |
| SCOP (55 °C) | 4.03✓4 | 3.581 |
| Seasonal efficiency ηs 35 °C | 200 %✓4 | 176 %1 |
| Seasonal efficiency ηs 55 °C | 158 %✓4 | 140 %1 |
| Energy label 35 °C | A+++4 | A+++3 |
| Energy label 55 °C | A+++4 | A++3 |
| COP A7/W35 | 5.51 | 6.2✓1 |
| COP A2/W35 | 4.57✓1 | 4.21 |
| COP A-7/W35 | 3.25✓1 | 31 |
| Noise | ||
| Outdoor unit sound power | 43 dB(A)✓4 | 48 dB(A)1 |
| Indoor unit sound power | – | 40 dB(A)1 |
| Refrigerant | ||
| Refrigerant | R2901 | R2901 |
| Refrigerant GWP | 32 | 33 |
| Refrigerant charge | 1.4 kg1 | 1.2 kg✓1 |
| Electrical | ||
| Max. power input | 3.68 kW1 | 1.14 kW1 |
| Connectivity & smart | ||
| SG Ready | Yes1 | Yes1 |
| Grants & market | ||
| ISDE grant (NL) | 2,800 €5 | – |
Frequently asked questions
Which is better: the STIEBEL ELTRON WPL-A 07.2 Plus HK 230 or the Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001?
SCOP (35 °C): STIEBEL ELTRON WPL-A 07.2 Plus HK 230 5.08, Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 4.44. The STIEBEL ELTRON WPL-A 07.2 Plus HK 230 is better on 10 of 15 comparable points.
What is the SCOP (35 °C) of the STIEBEL ELTRON WPL-A 07.2 Plus HK 230 and the Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001?
STIEBEL ELTRON WPL-A 07.2 Plus HK 230: 5.08. Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001: 4.44.
Which is better on heating capacity (A7/W35): the STIEBEL ELTRON WPL-A 07.2 Plus HK 230 or the Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001?
Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001: 5.6 kW. STIEBEL ELTRON WPL-A 07.2 Plus HK 230: 3.05 kW.
Which is better on rated output 55 °C: the STIEBEL ELTRON WPL-A 07.2 Plus HK 230 or the Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001?
STIEBEL ELTRON WPL-A 07.2 Plus HK 230: 8 kW. Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001: 6.17 kW.
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How we collect and check this data →
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
- European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026
- ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 28 Sept 2026