Megawave R32 (MWMHP-18KW3)

Specifications and technical data

✓ BUS eligibleAir Source (ASHP)DomesticR326.2–20.5 kW

Manufacturer	Megawave
Model	R32
Model code	MWMHP-18KW3
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Domestic All Domestic heat pumps →
Refrigerant	R32 All R32 heat pumps →
Mode	Heating & cooling
Heating capacity	6.2–20.5 kW
Max heating output (low temp)	16.9 kW at A7/W55
COP (heating)	4.7 at A7/W35
Operating range (air)	-30 to 45 °C
Heating flow temperature	up to 60 °C
Power input	7.24 kW
Electrical supply	380-415V (Three Phase)
Cooling capacity	15.88 kW
Max cooling output (high temp)	15.88 kW at A35/W7
Cooling flow temperature	from 7 °C
EER (cooling)	3.18 at A35/W7
Dimensions (H×W×D)	1450 × 1110 × 445 mm
Operational Weight	151 kg
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.	MCS HP0341/07
MCS certification	✓ MCS listed
MCS certificate no.	MCS HP0341/07

Free data sheet (PDF) →

View manufacturer page →

Megawave MWMHP-18KW3 R32 monobloc air-to-water heat pump, 18 kW nominal. 6.2-20.5 kW at A7/W35 with a COP of 4.7 and ErP class A+++; 16.9 kW at A7/W55, COP 3.09, class A++. Panasonic DC inverter EVI rotary compressor, three-phase, flow to 60 C, operates from -30 C ambient. Built-in inverter circulation pump, Wi-Fi and IoT remote monitoring. MCS certified and BUS eligible.

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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.