Chillers · Greater Toronto Area

Commercial Chiller Service in the GTA

Repair diagnostics, seasonal maintenance and upgrade planning for air-cooled and water-cooled chiller systems.

24/7 Emergency Line (416) 726-7102

Commercial & industrial HVAC support across the Greater Toronto Area.

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Equipment overview

Cooling-plant decisions begin with operating data

A chiller alarm or loss of capacity can point to refrigeration, electrical, water-flow, heat-transfer, sensor or control conditions. Sensible combines the reported problem with operating readings and the connected plant arrangement so facility teams receive a clear diagnosis rather than a one-component assumption.

Where this equipment is used

Hospitals and healthcare facilities
Universities, campuses and institutions
Office towers, hotels and large retail
Industrial and technology facilities

Air-cooled commercial chiller installed outdoors on a rooftop pad

Signs you need chiller repair

Unusual noise, vibration or elevated amp draw from the compressor
Safeties tripping repeatedly, or an alarm history that keeps repeating
Reduced capacity while pressures and flow read close to normal
Chilled-water or condenser-water flow conditions outside their normal band
Strainers or heat-transfer surfaces fouling faster than the service interval
Control sequences that no longer stage the plant as designed

Signs you need chiller replacement

A load profile the present plant can no longer follow
Repairs recurring on the same circuit rather than resolving
Refrigerant availability and cost changing the economics of a major repair
Electrical, access or rigging constraints that limit what repair can achieve
Heat-transfer performance that does not return after cleaning
A building change that leaves the chiller mismatched to the load

Signs you need chiller preventative maintenance

Operating trends and alarm history not reviewed between seasons
No scheduled inspection of electrical, control and accessible mechanical components
Water flow, strainers and heat-transfer surfaces with no defined check
Start-up and shutdown carried out without a documented routine
Corrective work planned without regard to facility demand
Stable operating conditions never recorded, so drift cannot be spotted

Schedule Service

Does the refrigerant phase-down mean we have to replace our chiller?

No. Canada's commitment under the Kigali Amendment is a phase-down of HFC supply, not a ban on equipment — existing machines keep running and no regulation requires replacement by a deadline. What changes is the maths on a major repair: as supply tightens, recharging an older machine costs more, so a failed compressor is a different decision than it was a few years ago.

What refrigerants do new commercial chillers use?

The 2023 update to CSA B52 opened the door to A2L refrigerants in Canada, and most new commercial installations now use a refrigerant with a global warming potential of 700 or below. Which one suits your plant depends on the equipment, the mechanical room and the controls it has to integrate with.

What is usually the first sign a chiller is in trouble?

Efficiency, before anything breaks. Rising energy use, longer run times to hold setpoint, or a small but steady climb in amp draw usually appear before the noise, vibration or safety trips do. That is the value of reviewing trends between visits rather than only responding to alarms.

How often should a chiller be inspected?

ANSI/ASHRAE/ACCA Standard 180 prescribes inspection and maintenance tasks at defined frequencies for commercial chillers. Most GTA plants schedule around the cooling season, with the interval set by run hours, water quality, and how much redundancy the building has if the machine goes down.

Can chiller work be done without shutting the building down?

Sometimes. It depends on plant redundancy, isolation capability and how much of the load can be shed. Where there is no standby capacity, the work has to be planned around facility demand and an agreed outage window rather than assumed.