Dimplex SI (34.8 kW)

Specifications and technical data

✓ BUS eligibleGround Source (GSHP)CommercialR410A34.8 kW

Manufacturer	Dimplex
Model	SI
Model code	SI 35TU
Heat pump type	Ground Source (GSHP) All Ground Source heat pumps →
Application	Commercial All Commercial heat pumps →
Refrigerant	R410A All R410A heat pumps →
Mode	Heating only
Heating capacity	34.8 kW
Max heating output (low temp)	9.2 kW at B-5/W45
COP (heating)	5.2 at B0/W35
Operating range (air)	-5 to 25 °C
Heating flow temperature	20–62 °C
Power input	14.5 kW
Electrical supply	380-415V (Three Phase)
Dimensions (H×W×D)	880 × 1000 × 750 mm
Operational Weight	315 kg
Sound power level	58 dB(A) (Sound Power LW(A))
Data added	2026-07-05
Data source	Manufacturer Data Sheet
Verification	Verified by a human
Boiler Upgrade Scheme	✓ BUS eligible — Listed on the Ofgem BUS Product Eligibility List (24 Sep 2026). Grant also needs an MCS-certified installer and a qualifying system design. Funding guide
PEL certificate no.	MCS HP0017/38
MCS certification	✓ MCS listed
MCS certificate no.	MCS HP0017/38
MCS listing	View on MCS ↗

Free data sheet (PDF) →

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Dimplex SI is a 34.8 kW ground source heat pump, using R410A refrigerant.

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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.