ES Heat Pumps ES M12 R290

Specifications and technical data

Also known as: HP 12kW R290

✓ BUS eligibleAir Source (ASHP)ResidentialR2903.8–12 kW

Manufacturer	ES Heat Pumps
Model	ES M12 R290
Model code	120703
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R290 All R290 heat pumps →
Mode	Heating & cooling
Heating capacity	3.8–12 kW
Max heating output (low temp)	12 kW at A7/W35
COP (heating)	4.8 at A7/W35
SCOP (heating)	4.7 at W35
Operating range (air)	-25 to 45 °C
Heating flow temperature	up to 70 °C
Power input	3.06 kW
Electrical supply	220-240V (Single Phase)
Cooling capacity	5 kW
Max cooling output (high temp)	5 kW at A35/W7
Cooling flow temperature	7–18 °C
EER (cooling)	3.6 at A35/W7
Dimensions (H×W×D)	995 × 1207 × 437 mm
Operational Weight	138 kg
Sound power level	54 dB(A) (Sound Power LW(A))
Data added	2026-08-30
Data source	Manufacturer datasheet
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.	007-DQ0205_1
MCS certification	✓ MCS listed
MCS certificate no.	007-DQ0205

Free data sheet (PDF) →

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

ES Heat Pumps ES M12 R290 air-to-water monobloc heat pump, R290. 3.8-12.0 kW at A7/W35 with a maximum COP of 4.8 and SCOP of 4.7 at 35 C. Single-phase. Heating water to 70 C, operates to -25 C ambient. ErP class A+++. Also sold as HP 12kW R290.

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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.