STIEBEL ELTRON WPL 09 ICS classic vs Tecalor TTL 4.5 IKCS
SCOP (35 °C): STIEBEL ELTRON WPL 09 ICS classic 4.53, Tecalor TTL 4.5 IKCS 4.46. The STIEBEL ELTRON WPL 09 ICS classic is better on 7 of 16 comparable points.
Who wins where
- STIEBEL ELTRON WPL 09 ICS classic
- Tecalor TTL 4.5 IKCS
Biggest differences
| Fact | WPL 09 ICS classic | TTL 4.5 IKCS |
|---|---|---|
| COP A-7/W35 | 3.16 | 3.07 |
| Rated output 35 °C | 4.8 kW | 4.7 kW |
Score per area = position (0–100) relative to all 1350 models in this category; higher is better.
| Technical specifications | STIEBEL ELTRONWPL 09 ICS classic | TecalorTTL 4.5 IKCS |
|---|---|---|
| Grants & market | ||
| SEAI Heat Pump System Grant | €14,500 | €14,500 |
| General | ||
| Type (source) | Air-to-water 1 | Air-to-water 1 |
| Performance | ||
| Heating capacity (A7/W35) | 2.06 kW 2 | 2.06 kW 3 |
| Rated output 35 °C | 4.8 kW ✓ 1 | 4.7 kW 1 |
| Rated output 55 °C | 4.5 kW 1 | 4.5 kW 1 |
| Min. outdoor temperature | -20 °C 2 | -20 °C 3 |
| Efficiency | ||
| SCOP (35 °C) | 4.53 ✓ 1 | 4.46 1 |
| SCOP (55 °C) | 3.33 ✓ 1 | 3.28 1 |
| Seasonal efficiency ηs 35 °C | 178 % ✓ 1 | 175 % 1 |
| Seasonal efficiency ηs 55 °C | 130 % ✓ 1 | 128 % 1 |
| Energy label 35 °C | A, , , 2 | A, , , 3 |
| Energy label 55 °C | A, , 2 | A, , 3 |
| COP A7/W35 | 4.68 1 | 4.68 1 |
| COP A2/W35 | 3.83 ✓ 1 | 3.76 1 |
| COP A-7/W35 | 3.16 ✓ 1 | 3.07 1 |
| Noise | ||
| Outdoor unit sound power | 32 dB(A) 1 | 32 dB(A) 1 |
| Indoor unit sound power | 45 dB(A) 1 | 45 dB(A) 1 |
| Refrigerant | ||
| Refrigerant | R410A 1 | R410A 1 |
| Refrigerant GWP | 2,088 2 | 2,088 3 |
| Refrigerant charge | 2.2 kg 1 | 2.2 kg 1 |
| Electrical | ||
| Max. power input | 8.5 kW 1 | 8.5 kW 1 |
| Connectivity & smart | ||
| SG Ready | Yes 1 | Yes 1 |
Sources
- List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 29 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