Commercial Heat Pumps and VRV/VRF Systems

Why Do Commercial Heat Pumps Deserve Specific Follow-Up?

A commercial heat pump works all year: cooling in summer, heating in winter. Its compressors, fans and reversing valves therefore accumulate far more operating hours than a seasonal air conditioner. Maintenance adapted to both seasons prevents capacity losses in deep cold, faulty defrost cycles and costly compressor failures.

What Heat Pump Services Do We Offer?

• Semi-annual preventive maintenance — coil cleaning, refrigerant circuit checks, defrost cycle and reversing valve verification, electrical component inspection
• Cooling and heating diagnostics — performance measurements in both modes, refrigerant leak detection, error code analysis
• Repair — replacement of compressors, reversing valves, control boards, sensors and fan motors
• Equipment replacement — end-of-life assessment and sizing based on the building’s actual load
• Dual-energy tuning — adjusting the switchover point between the heat pump and backup gas heating to minimize operating costs

The Advantage of a Team That Also Masters Combustion

In Québec’s commercial buildings, heat pumps are often paired with backup gas heating for deep cold. Tuning that duo requires understanding both systems: a poorly calibrated switchover point runs the most expensive source at the wrong time. Our dual heating/cooling expertise allows the whole system to be adjusted coherently.

Which Brands Do We Service?

Montréal Combustion services the leading commercial heat pump and VRV/VRF brands, including Daikin, Carrier, Trane, Lennox and York, with independent multi-brand recommendations.

Sectors Served

Commercial, industrial, institutional and multi-residential buildings across Greater Montréal, the North Shore and the South Shore.