ELCO AEROTOP SPK10 vs Inventor ATS08S/HU100S3
SCOP (35 °C): ELCO AEROTOP SPK10 4.86, Inventor ATS08S/HU100S3 5.21. Both models win equally often (7 of 16 points).
Who wins where
- ELCO AEROTOP SPK10
- Inventor ATS08S/HU100S3
Biggest differences
| Fact | AEROTOP SPK10 | ATS08S/HU100S3 |
|---|---|---|
| Refrigerant GWP | 3 | 675 |
| Refrigerant charge | 3.4 kg | 1.65 kg |
| Heating capacity (A7/W35) | 4.1 kW | 8.3 kW |
| Indoor unit sound power | 32 dB(A) | 42 dB(A) |
| COP A-7/W35 | 2.88 | 3.35 |
| Rated output 55 °C | 7.4 kW | 6.6 kW |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | ELCOAEROTOP SPK10 | InventorATS08S/HU100S3 |
|---|---|---|
| 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) | 4.1 kW 2 | 8.3 kW ✓ 3 |
| Rated output 35 °C | 7.58 kW 1 | 8.12 kW ✓ 1 |
| Rated output 55 °C | 7.4 kW ✓ 1 | 6.6 kW 1 |
| Min. outdoor temperature | -22 °C 2 | -22 °C 3 |
| Efficiency | ||
| SCOP (35 °C) | 4.86 1 | 5.21 ✓ 1 |
| SCOP (55 °C) | 3.6 ✓ 1 | 3.38 1 |
| Seasonal efficiency ηs 35 °C | 191 % 1 | 205 % ✓ 1 |
| Seasonal efficiency ηs 55 °C | 141 % ✓ 1 | 132 % 1 |
| Energy label 35 °C | A, , , 2 | A, , , 3 |
| Energy label 55 °C | A, , 2 | A, , 3 |
| COP A7/W35 | 5.54 ✓ 1 | 5.2 1 |
| COP A2/W35 | 4.65 1 | 5.09 ✓ 1 |
| COP A-7/W35 | 2.88 1 | 3.35 ✓ 1 |
| Noise | ||
| Outdoor unit sound power | 53 dB(A) ✓ 1 | 59 dB(A) 1 |
| Indoor unit sound power | 32 dB(A) ✓ 1 | 42 dB(A) 1 |
| Refrigerant | ||
| Refrigerant | R290 1 | R32 1 |
| Refrigerant GWP | 3 ✓ 2 | 675 3 |
| Refrigerant charge | 3.4 kg 1 | 1.65 kg ✓ 1 |
| Electrical | ||
| Max. power input | 5.75 kW 1 | 1.63 kW 1 |
| Connectivity & smart | ||
| SG Ready | Yes 1 | Yes 1 |
Sources
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 28 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