Emergency HVAC Service in Toronto for No Heat or AC Repair

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A heating or cooling failure may need attention outside a regular appointment. Critical Heating & Cooling provides emergency HVAC service in Toronto and nearby areas and is open 24 hours. We help identify immediate safety concerns, diagnose the equipment, and explain practical repair options.

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Call for a no-heat emergency, a no-cooling problem, or an AC repair emergency when a system has stopped working or is not keeping up. We handle residential and light-commercial HVAC calls for furnaces, boilers, air conditioners, heat pumps, controls, and related components.

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If you smell gas, see smoke, or suspect carbon monoxide, leave the building and call 911 or the appropriate emergency utility service first. Do not operate equipment that appears unsafe. For a system that has simply stopped heating or cooling, call us with the thermostat reading, what happened, and any unusual sounds or fault codes.

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Emergency HVAC calls we can assess

• Furnace or boiler not heating

• No hot water from a boiler system

• Air conditioner or heat pump not cooling

• System shutting off, short cycling, or showing a fault code

• Frozen coil, water leak, or condensate problem

• Blower, pump, ignition, or electrical-control failure

• Thermostat or other control problem

• Urgent light-commercial heating or cooling breakdowns

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What to do before we arrive

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If it is safe, check that the thermostat is set correctly, the equipment has power, and the furnace filter is not completely blocked. Do not repeatedly reset a tripped breaker, bypass a safety control, or relight equipment if you smell gas. Keep the equipment accessible so the technician can inspect it.

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No heat or no cooling? Call now.

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Call (647) 961-6355. We are open 24 hours and serve Toronto and nearby areas. Email george@criticalhvacservices.com for non-urgent follow-up or service details.