Heliotherm Air Heat Pump Split Design (4.1–12.2 kW)

Specifications and technical data

✓ BUS eligibleAir Source (ASHP)ResidentialNot stated4.1–12.2 kW

Manufacturer	Heliotherm
Model	Air Heat Pump Split Design
Model code	HP12L-M-BC
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	Not stated
Mode	Heating & cooling
Heating capacity	4.1–12.2 kW
Max heating output (low temp)	10.8 kW at A-7/W34
COP (heating)	5.9 at A7/W27
Operating range (air)	-25 to 45 °C
Heating flow temperature	up to 62 °C
Cooling capacity	12.2 kW
Max cooling output (high temp)	12.2 kW at A35/W7
EER (cooling)	4.3 at A35/W18
Dimensions (H×W×D)	1700 × 600 × 670 mm
Operational Weight	208 kg
Sound power level	41 dB(A) (Sound Power LW(A))
Data added	2026-07-13
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.	BBA 0136/25
MCS certification	✓ MCS listed
MCS listing	View on MCS ↗

Free data sheet (PDF) →

Check noise at a neighbour’s window (MCS 020 a) →

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Heliotherm HP12L-M-BC is a 12.2 kW air source heat pump, providing heating and cooling, using Not stated 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.