ELCO AEROTOP SPK20 vs Goodheat GSHVTH-18AA1
SCOP (35 °C): ELCO AEROTOP SPK20 5.25, Goodheat GSHVTH-18AA1 4.91. The ELCO AEROTOP SPK20 is better on 6 of 13 comparable points.
Who wins where
- ELCO AEROTOP SPK20
- Goodheat GSHVTH-18AA1
Biggest differences
| Fact | AEROTOP SPK20 | GSHVTH-18AA1 |
|---|---|---|
| Refrigerant charge | 3.8 kg | 1.4 kg |
| COP A7/W35 | 4.28 | 6.27 |
| Heating capacity (A7/W35) | 23.59 kW | 18 kW |
| Outdoor unit sound power | 53 dB(A) | 64 dB(A) |
| Seasonal efficiency ηs 35 °C | 207 % | 193 % |
| SCOP (35 °C) | 5.25 | 4.91 |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | ELCOAEROTOP SPK20 | GoodheatGSHVTH-18AA1 |
|---|---|---|
| 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) | 23.59 kW ✓ 2 | 18 kW 3 |
| Rated output 35 °C | 18 kW ✓ 1 | 17.6 kW 1 |
| Rated output 55 °C | 18 kW ✓ 1 | 17.86 kW 1 |
| Efficiency | ||
| SCOP (35 °C) | 5.25 ✓ 1 | 4.91 1 |
| SCOP (55 °C) | 3.9 1 | 3.95 ✓ 1 |
| Seasonal efficiency ηs 35 °C | 207 % ✓ 1 | 193 % 1 |
| Seasonal efficiency ηs 55 °C | 153 % 1 | 155 % ✓ 1 |
| Energy label 35 °C | A, , , 2 | A, , , 3 |
| Energy label 55 °C | A, , , 2 | A, , , 3 |
| COP A7/W35 | 4.28 1 | 6.27 ✓ 1 |
| COP A2/W35 | – | 4.77 1 |
| COP A-7/W35 | 3.1 1 | 3.2 ✓ 1 |
| Noise | ||
| Outdoor unit sound power | 53 dB(A) ✓ 1 | 64 dB(A) 1 |
| Indoor unit sound power | 35 dB(A) 1 | – |
| Refrigerant | ||
| Refrigerant | R290 1 | R290 1 |
| Refrigerant GWP | 3 2 | 3 3 |
| Refrigerant charge | 3.8 kg 1 | 1.4 kg ✓ 1 |
| Electrical | ||
| Max. power input | 20.1 kW 1 | 10.52 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