Zealux Zealux Inverboost (XAH12Csi32)

Specifications and technical data

Also known as: ALSAVO HEAT 12i

✓ BUS eligibleAir Source (ASHP)ResidentialR3212 kW

Manufacturer	Zealux
Model	Zealux Inverboost
Model code	XAH12Csi32
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	12 kW
Max heating output (low temp)	7.6 kW at A-7/W55
COP (heating)	4.65 at A7/W35
Operating range (air)	-25 to 43 °C
Heating flow temperature	up to 55 °C
Power input	5.43 kW
Electrical supply	220-240V (Single Phase)
Cooling capacity	11.7 kW
Max cooling output (high temp)	9.63 kW at A35/W7
Cooling flow temperature	7–18 °C
EER (cooling)	2.84 at A35/W7
Dimensions (H×W×D)	1260 × 1052 × 453 mm
Operational Weight	99 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.	011-1W0660_01
MCS certification	✓ MCS listed
MCS certificate no.	011-1W0660_01

Free data sheet (PDF) →

View manufacturer page →

Zealux XAH12Csi32 air-to-water heat pump from the INVERBOOST CLASSIC range, R32 refrigerant. 12.0 kW heating at A7/W35 with a COP of 4.65. Inverter compressor, single-phase. Operates to -25 C ambient, ErP class A+++. Also sold as ALSAVO HEAT 12i.

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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.