AUX A-thermal Mono R290 (ACHP-H04/4R2HA-M(NE))

Specifications and technical data

✓ BUS eligibleAir Source (ASHP)ResidentialR2904.77 kW

Manufacturer	AUX
Model	A-thermal Mono R290
Model code	ACHP-H04/4R2HA-M(NE)
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	4.77 kW
Max heating output (low temp)	4.57 kW at A-7/W35
COP (heating)	5.2 at A7/W35
SCOP (heating)	4.96 at W35
Operating range (air)	-25 to 35 °C
Heating flow temperature	25–80 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	4.7 kW
Max cooling output (high temp)	4.7 kW at A35/W7
Cooling flow temperature	5–25 °C
EER (cooling)	3.65 at A35/W7
Dimensions (H×W×D)	710 × 1130 × 450 mm
Operational Weight	93 kg
Sound power level	56 dB(A) (Sound Power LW(A))
Data added	2026-09-20
Data source	AUX R290 Monoblock Unit Operating Parameter Manual (v1, 2023-10-20)
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.	011-1W0739_3

Free data sheet (PDF) →

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

AUX A-thermal Mono air-to-water monobloc, natural R290 refrigerant. ErP rated heat output 5.5 kW with a seasonal space heating energy efficiency of 195% on the average-climate, low-temperature (W35) basis. Single-phase supply. NE variant.

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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.