M-TEC AHPA412 vs REMKO HTS 135
SCOP (35 °C): M-TEC AHPA412 5.25, REMKO HTS 135 5.57. The M-TEC AHPA412 is better on 7 of 14 comparable points.
Who wins where
- M-TEC AHPA412
- REMKO HTS 135
Biggest differences
| Fact | AHPA412 | HTS 135 |
|---|---|---|
| Refrigerant GWP | 3 | 675 |
| Outdoor unit sound power | 44 dB(A) | 58 dB(A) |
| Refrigerant charge | 2.3 kg | 1.75 kg |
| COP A2/W35 | 5.15 | 4.09 |
| ISDE grant (NL) | 3,025 € | 2,575 € |
| Seasonal efficiency ηs 35 °C | 207 % | 219.9 % |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | M-TECAHPA412 | REMKOHTS 135 |
|---|---|---|
| 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 | 9.4 kW 1 | 9.4 kW 1 |
| Rated output 55 °C | 8.8 kW 1 | 9 kW ✓ 1 |
| Efficiency | ||
| SCOP (35 °C) | 5.25 1 | 5.57 ✓ 1 |
| SCOP (55 °C) | 4.03 ✓ 1 | 3.83 1 |
| Seasonal efficiency ηs 35 °C | 207 % 1 | 219.9 % ✓ 1 |
| Seasonal efficiency ηs 55 °C | 158.2 % ✓ 1 | 150.1 % 1 |
| COP A7/W35 | 5.33 ✓ 1 | 5.04 1 |
| COP A2/W35 | 5.15 ✓ 1 | 4.09 1 |
| COP A-7/W35 | 3.26 1 | 3.3 ✓ 1 |
| Noise | ||
| Outdoor unit sound power | 44 dB(A) ✓ 1 | 58 dB(A) 1 |
| Indoor unit sound power | – | 54 dB(A) 1 |
| Refrigerant | ||
| Refrigerant | R290 1 | R32 1 |
| Refrigerant GWP | 3 ✓ 2 | 675 2 |
| Refrigerant charge | 2.3 kg 1 | 1.75 kg ✓ 1 |
| Electrical | ||
| Max. power input | 5.6 kW 1 | 2.98 kW 1 |
| Connectivity & smart | ||
| SG Ready | Yes 1 | Yes 1 |
| Grants & market | ||
| ISDE grant (NL) | 3,025 € ✓ 2 | 2,575 € 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