AXEN R32 Split Set (4.2 kW)

Specifications and technical data

Also known as: KFS-40B/EN8BP

Air Source (ASHP)ResidentialR324.2 kW

Manufacturer	AXEN
Model	R32 Split Set
Model code	KFS-40W/N8BP
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R32 All R32 heat pumps →
Mode	Heating & cooling
Heating capacity	4.2 kW
Max heating output (low temp)	4.1 kW at A7/W55
COP (heating)	4.89 at A7/W35
Operating range (air)	-25 to 35 °C
Heating flow temperature	up to 65 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	4.3 kW
Max cooling output (high temp)	4.3 kW at A35/W7
Cooling flow temperature	7–18 °C
EER (cooling)	3.12 at A35/W7
Sound power level	56 dB(A) (Sound Power LW(A))
Data added	2026-08-30
Data source	Manufacturer website
Verification	Verified by a human

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AXEN KFS-40W/N8BP air-to-water split heat pump, R32, paired with the KFS-40B/EN8BP indoor unit. 4.2 kW heating at A7/W35 with a COP of 4.89. Single-phase. Operates from -25 C ambient, ErP class A+++ at W35.

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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.