Ochsner AIR 18 C11B

Specifications and technical data

Also known as: OCHSNER AIR 18 C11B

✓ BUS eligibleAir Source (ASHP)ResidentialR407C11–18 kW

Manufacturer	Ochsner
Model	AIR 18 C11B
Model code	287032V
Heat pump type	Air Source (ASHP) All Air Source heat pumps →
Application	Residential All Residential heat pumps →
Refrigerant	R407C All R407C heat pumps →
Mode	Heating and Cooling
Heating capacity	11–18 kW
Max heating output (low temp)	10.1 kW at A-7/W35
COP (heating)	4.06 at A7/W35
SCOP (heating)	3.5 at W35
Operating range (air)	-22 to 35 °C
Heating flow temperature	up to 65 °C
Electrical supply	220-240V (Single Phase)
Cooling capacity	9.3 kW
Max cooling output (high temp)	9.3 kW at A35/W7
EER (cooling)	2.7 at A30/W7
Dimensions (H×W×D)	1104 × 1292 × 965 mm
Operational Weight	93 kg
Sound power level	70 dB(A) (Sound Power LW(A))
Data added	2026-07-28
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.	BBA 0037/31
MCS certification	✓ MCS listed
MCS certificate no.	BBA 0037/31
MCS listing	View on MCS ↗

Free data sheet (PDF) →

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

View manufacturer page →

14.2 kW air/water heat pump, split version with horizontal split evaporator. M2/M4 indoor unit, heating and cooling, OTE controller. Single-phase (1~/230V). R407C, scroll compressor, hot gas defrost. Electric auxiliary heater 8.7 kW. Max flow temp 65°C.

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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.