Clivet WiSAN-PME 1 S 2.1 vs TCL THMLd-4D/3FBp-A
SCOP (35 °C): Clivet WiSAN-PME 1 S 2.1 5.07, TCL THMLd-4D/3FBp-A 5.03. The Clivet WiSAN-PME 1 S 2.1 is better on 5 of 13 comparable points.
Who wins where
- Clivet WiSAN-PME 1 S 2.1
- TCL THMLd-4D/3FBp-A
Biggest differences
| Fact | WiSAN-PME 1 S 2.1 | THMLd-4D/3FBp-A |
|---|---|---|
| ISDE grant (NL) | 2,125 € | 2,350 € |
| Heating capacity (A7/W35) | 4.5 kW | 4.2 kW |
| Refrigerant charge | 0.7 kg | 0.74 kg |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | ClivetWiSAN-PME 1 S 2.1 | TCLTHMLd-4D/3FBp-A |
|---|---|---|
| Grants & market | ||
| Boiler Upgrade Scheme | £7,500 – £9,000 | £7,500 – £9,000 |
| General | ||
| Type (source) | Air-to-water 1 | Air-to-water 2 |
| Performance | ||
| Heating capacity (A7/W35) | 4.5 kW ✓ 1 | 4.2 kW 2 |
| Rated output 35 °C | 5 kW 1 | 5 kW 2 |
| Rated output 55 °C | 4.9 kW 1 | 4.9 kW 2 |
| Min. outdoor temperature | -22 °C 1 | -22 °C 2 |
| Efficiency | ||
| SCOP (35 °C) | 5.07 ✓ 1 | 5.03 2 |
| SCOP (55 °C) | 3.79 1 | 3.8 ✓ 2 |
| Seasonal efficiency ηs 35 °C | 199 % ✓ 1 | 198 % 2 |
| Seasonal efficiency ηs 55 °C | 148 % 1 | 149 % ✓ 2 |
| Energy label 35 °C | A, , , 1 | A, , , 2 |
| Energy label 55 °C | A, , 1 | A, , 2 |
| COP A7/W35 | 5.15 ✓ 1 | 5.09 2 |
| Noise | ||
| Outdoor unit sound power | 56 dB(A) 1 | 56 dB(A) 2 |
| Refrigerant | ||
| Refrigerant | R290 1 | R290 2 |
| Refrigerant GWP | 3 1 | 3 2 |
| Refrigerant charge | 0.7 kg ✓ 1 | 0.74 kg 2 |
| Grants & market | ||
| ISDE grant (NL) | 2,125 € 3 | 2,350 € ✓ 3 |
Sources
- 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
- ISDE heat pump notification code list — Rijksdienst voor Ondernemend Nederland (RVO) · accessed 28 Sept 2026