Dimplex SI (SIW 8TES)
Specifications and technical data
Ground Source (GSHP)ResidentialR410A7.8 kW
| Manufacturer | Dimplex |
|---|---|
| Model | SI |
| Model code | SIW 8TES |
| Heat pump type | Ground Source (GSHP) All Ground Source heat pumps → |
| Application | Residential All Residential heat pumps → |
| Refrigerant | R410A All R410A heat pumps → |
| Mode | Heating only |
| Heating capacity | 7.8 kW |
| Max heating output (low temp) | 6.4 kW at B-5/W45 |
| COP (heating) | 4.8 at B0/W35 |
| Operating range (air) | -5 to 25 °C |
| Heating flow temperature | 20–62 °C |
| Power input | 3.3 kW |
| Electrical supply | 380-415V (Three Phase) |
| Dimensions (H×W×D) | 1994 × 590 × 710 mm |
| Operational Weight | 438 kg |
| Sound power level | 42 dB(A) (Sound Power LW(A)) |
| Data added | 2026-07-05 |
| Data source | Manufacturer Data Sheet |
| Verification | Verified by a human |
Dimplex SI is a 7.8 kW ground source heat pump, using R410A refrigerant (model SIW 8TES).
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Data is compiled from manufacturer sources and may contain errors or gaps. Always confirm specifications with the manufacturer before making decisions.
Reviews & further reading
- Manufacturer Ground Source Heat Pumps — DimplexCovers the wider Dimplex range
Alternatives to consider
Three Ground Source (GSHP) heat pumps from other manufacturers closest in capacity to this one.
F1145
Nibe · F1145-8
- Capacity
- 7.93 kW
- SCOP
- 4.9 (W35)
- Sound power
- 38 dB(A)
- Refrigerant
- R407C
Calibra E
Thermia · Calibra E 8
- Capacity
- 2–8 kW
- SCOP
- 5.87 (W35)
- Sound power
- 32 dB(A)
- Refrigerant
- R452B
TERRA 8 HPLB
Ochsner · 265022V0000
- Capacity
- 7.6 kW
- SCOP
- 5.23 (W35)
- Sound power
- 47 dB(A)
- Refrigerant
- R410A
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Other Ground Source (GSHP) heat pumps
WZSV
GSHP · 0.77–6 kW
WZSV
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WZSV
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WZSV
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WZS
GSHP · 4.7 kW · BUS eligible
WZS
GSHP · 7.7 kW
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