REMKO HTS 205 vs Sunex NEXUS M17 PRO
SCOP (35 °C): REMKO HTS 205 5.65, Sunex NEXUS M17 PRO 4.81. The REMKO HTS 205 is better on 9 of 14 comparable points.
Who wins where
- REMKO HTS 205
- Sunex NEXUS M17 PRO
Biggest differences
| Fact | HTS 205 | NEXUS M17 PRO |
|---|---|---|
| Refrigerant GWP | 675 | 3 |
| Refrigerant charge | 2.2 kg | 2.8 kg |
| COP A2/W35 | 4.14 | 3.31 |
| COP A7/W35 | 5.11 | 4.22 |
| ISDE grant (NL) | 3,250 € | 3,925 € |
| Seasonal efficiency ηs 35 °C | 222.9 % | 189.6 % |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | REMKOHTS 205 | SunexNEXUS M17 PRO |
|---|---|---|
| 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 | ||
| Rated output 35 °C | 13.6 kW ✓ 1 | 13.2 kW 1 |
| Rated output 55 °C | 12.4 kW 1 | 12.85 kW ✓ 1 |
| Efficiency | ||
| SCOP (35 °C) | 5.65 ✓ 1 | 4.81 1 |
| SCOP (55 °C) | 3.92 ✓ 1 | 3.83 1 |
| Seasonal efficiency ηs 35 °C | 222.9 % ✓ 1 | 189.6 % 1 |
| Seasonal efficiency ηs 55 °C | 153.6 % ✓ 1 | 150.2 % 1 |
| COP A7/W35 | 5.11 ✓ 1 | 4.22 1 |
| COP A2/W35 | 4.14 ✓ 1 | 3.31 1 |
| COP A-7/W35 | 3.35 ✓ 1 | 3.1 1 |
| Noise | ||
| Outdoor unit sound power | 58.7 dB(A) 1 | 52.2 dB(A) ✓ 1 |
| Indoor unit sound power | 56.5 dB(A) 1 | – |
| Refrigerant | ||
| Refrigerant | R32 1 | R290 1 |
| Refrigerant GWP | 675 2 | 3 ✓ 2 |
| Refrigerant charge | 2.2 kg ✓ 1 | 2.8 kg 1 |
| Electrical | ||
| Max. power input | 4.42 kW 1 | 6.3 kW 1 |
| Connectivity & smart | ||
| SG Ready | Yes 1 | Yes 1 |
| Grants & market | ||
| ISDE grant (NL) | 3,250 € 2 | 3,925 € ✓ 2 |
Sources
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
- ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 28 Sept 2026