Inventor ATS06S / HU100WT190S3 vs Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001
SCOP (35 °C): Inventor ATS06S / HU100WT190S3 4.95, Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 4.44. The Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 is better on 8 of 16 comparable points.
Both models in detail
Who wins where
- Inventor ATS06S / HU100WT190S3
- Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001
Biggest differences
| Fact | ATS06S / HU100WT190S3 | Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 |
|---|---|---|
| Refrigerant GWP | 675 | 3 |
| Refrigerant charge | 1.5 kg | 1.2 kg |
| COP A7/W35 | 5 | 6.2 |
| Outdoor unit sound power | 58 dB(A) | 48 dB(A) |
| COP A2/W35 | 4.85 | 4.2 |
| SCOP (35 °C) | 4.95 | 4.44 |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | InventorATS06S / HU100WT190S3 | ViessmannVitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 |
|---|---|---|
| General | ||
| Type (source) | Air-to-water1 | Air-to-water1 |
| Performance | ||
| Heating capacity (A7/W35) | 6.2 kW✓2 | 5.6 kW3 |
| Rated output 35 °C | 6.82 kW✓1 | 6.47 kW1 |
| Rated output 55 °C | 5.7 kW1 | 6.17 kW✓1 |
| Min. outdoor temperature | -22 °C✓2 | -20 °C3 |
| Efficiency | ||
| SCOP (35 °C) | 4.95✓1 | 4.441 |
| SCOP (55 °C) | 3.531 | 3.58✓1 |
| Seasonal efficiency ηs 35 °C | 195 %✓1 | 176 %1 |
| Seasonal efficiency ηs 55 °C | 138 %1 | 140 %✓1 |
| Energy label 35 °C | A+++2 | A+++3 |
| Energy label 55 °C | A++2 | A++3 |
| COP A7/W35 | 51 | 6.2✓1 |
| COP A2/W35 | 4.85✓1 | 4.21 |
| COP A-7/W35 | 3.09✓1 | 31 |
| Noise | ||
| Outdoor unit sound power | 58 dB(A)1 | 48 dB(A)✓1 |
| Indoor unit sound power | 42 dB(A)1 | 40 dB(A)✓1 |
| Refrigerant | ||
| Refrigerant | R321 | R2901 |
| Refrigerant GWP | 6752 | 3✓3 |
| Refrigerant charge | 1.5 kg1 | 1.2 kg✓1 |
| Electrical | ||
| Max. power input | 1.28 kW1 | 1.14 kW1 |
| Connectivity & smart | ||
| SG Ready | Yes1 | Yes1 |
Frequently asked questions
Which is better: the Inventor ATS06S / HU100WT190S3 or the Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001?
SCOP (35 °C): Inventor ATS06S / HU100WT190S3 4.95, Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 4.44. The Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001 is better on 8 of 16 comparable points.
What is the SCOP (35 °C) of the Inventor ATS06S / HU100WT190S3 and the Viessmann Vitocal 250-A IDU-A AWMIW.A1.19-V052 / ODU 250-A AWMOF-251.A1.08-230-V001?
Inventor ATS06S / HU100WT190S3: 4.95. 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 refrigerant GWP: the Inventor ATS06S / HU100WT190S3 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: 3. Inventor ATS06S / HU100WT190S3: 675.
Which is better on refrigerant charge: the Inventor ATS06S / HU100WT190S3 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: 1.2 kg. Inventor ATS06S / HU100WT190S3: 1.5 kg.
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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 Sep 29, 2026
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed Sep 29, 2026
- Heat Pump Keymark certificates — EHPA / DIN CERTCO (Heat Pump KEYMARK) · accessed Sep 29, 2026