Vaillant geoTHERM mini

Specifications and technical data

Ground Source (GSHP)ResidentialR410A3 kW

Manufacturer	Vaillant
Model	geoTHERM mini
Model code	geoTHERM mini 3
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	3 kW
Max heating output (low temp)	2.3 kW at B0/W45
COP (heating)	4.5 at B0/W35
SCOP (heating)	3.99 at W35
Operating range (air)	-10 to 20 °C
Heating flow temperature	20–60 °C
Electrical supply	220-240V (Single Phase)
Dimensions (H×W×D)	720 × 440 × 426 mm
Operational Weight	66 kg
Sound power level	45 dB(A) (Sound Power LW(A))
Data added	2026-07-02
Data source	Manufacturer Data Sheet
Verification	Verified by a human

Free data sheet (PDF) →

View manufacturer page →

Vaillant geoTHERM mini is a 3 kW ground source heat pump, using R410A refrigerant.

Where to buy (UK)

UK Supplier	The Heat Pump Warehouse
UK Supplier	Secon Renewables
UK Supplier	City Plumbing
UK Supplier	Pirate Heating Supplies
UK Supplier	Eco Wizard

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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 Heat pumps from Vaillant — Vaillant
Covers the wider Vaillant range
Review Vaillant geoTHERM ground source heat pumps review — Federation of Master Builders
Covers the geoTHERM ground source range generally; the standard geoTHERM units are now discontinued but the wall-hung mini variant remains available.