Viessmann IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 vs Waterkotte EcoTouch Air Bloc 7008 (230V)
SCOP (35 °C): Viessmann IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 4.44, Waterkotte EcoTouch Air Bloc 7008 (230V) 5. The Waterkotte EcoTouch Air Bloc 7008 (230V) is better on 11 of 16 comparable points.
Who wins where
- Viessmann IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001
- Waterkotte EcoTouch Air Bloc 7008 (230V)
Biggest differences
| Fact | IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 | EcoTouch Air Bloc 7008 (230V) |
|---|---|---|
| Refrigerant charge | 1.2 kg | 0.8 kg |
| COP A7/W35 | 6.2 | 4.87 |
| Indoor unit sound power | 40 dB(A) | 35 dB(A) |
| Rated output 55 °C | 6.17 kW | 7 kW |
| Rated output 35 °C | 6.47 kW | 7.3 kW |
| SCOP (35 °C) | 4.44 | 5 |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | ViessmannIDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 | WaterkotteEcoTouch Air Bloc 7008 (230V) |
|---|---|---|
| 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) | 5.6 kW ✓ 2 | 5.02 kW 3 |
| Rated output 35 °C | 6.47 kW 1 | 7.3 kW ✓ 1 |
| Rated output 55 °C | 6.17 kW 1 | 7 kW ✓ 1 |
| Min. outdoor temperature | -20 °C 2 | -22 °C ✓ 3 |
| Efficiency | ||
| SCOP (35 °C) | 4.44 1 | 5 ✓ 1 |
| SCOP (55 °C) | 3.58 1 | 3.85 ✓ 1 |
| Seasonal efficiency ηs 35 °C | 176 % 1 | 197 % ✓ 1 |
| Seasonal efficiency ηs 55 °C | 140 % 1 | 151.2 % ✓ 1 |
| Energy label 35 °C | A, , , 2 | A, , , 3 |
| Energy label 55 °C | A, , 2 | A, , , 3 |
| COP A7/W35 | 6.2 ✓ 1 | 4.87 1 |
| COP A2/W35 | 4.2 ✓ 1 | 3.87 1 |
| COP A-7/W35 | 3 1 | 3.26 ✓ 1 |
| Noise | ||
| Outdoor unit sound power | 48 dB(A) 1 | 47 dB(A) ✓ 1 |
| Indoor unit sound power | 40 dB(A) 1 | 35 dB(A) ✓ 1 |
| Refrigerant | ||
| Refrigerant | R290 1 | R290 1 |
| Refrigerant GWP | 3 2 | 3 3 |
| Refrigerant charge | 1.2 kg 1 | 0.8 kg ✓ 1 |
| Electrical | ||
| Max. power input | 1.14 kW 1 | 3.68 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