When to Call for Emergency HVAC Service
No heat, no cooling, unusual smells, or a sudden shutdown — here is how to decide when HVAC issues become emergencies.
By VNEC Team

Heating and cooling failures are stressful, especially during extreme weather. Not every issue is an emergency, but some situations should not wait for regular business hours.
Situations that often need emergency HVAC help
- No heat during cold conditions
- No cooling during extreme heat
- Sudden system shutdown
- Burning smells from equipment
- Loud or unusual noises followed by failure
- Suspected equipment failure affecting safety or occupancy
Gas and carbon monoxide concerns
If you suspect a gas leak or carbon monoxide danger, leave the property immediately. Contact emergency services and your gas utility before calling any HVAC provider. Only request service after the property is safe.
Helpful details to share
Note whether the thermostat has power, whether breakers are tripped, and when the problem started. Avoid repeated reset attempts if equipment smells unusual or feels unsafe.
VNEC offers 24/7 emergency HVAC support across the Greater Toronto Area. Call 437-256-1028 for urgent assistance.
