Emergency HVAC Service

No heat? AC stopped working? Strange smells or a system that won’t turn on? Call DHEM Heating & Cooling for fast, reliable emergency HVAC service in Hamilton and the surrounding areas, day or night.

Emergency HVAC service

What Counts as an HVAC Emergency?

Some heating and cooling problems can wait for a scheduled visit, but others can't. If you're dealing with any of the following, call us right away and we'll dispatch a licensed technician as fast as possible.

Homeowner wondering what counts as an HVAC emergency

No Heat in Freezing Temperatures

A furnace that won't ignite when it's below freezing puts your family and your plumbing at risk. Frozen pipes can follow within hours, so treat a dead furnace in winter as an emergency and call us right away.

Homeowner bundled up in a cold home with no heat

Air Conditioning Failure During a Heat Wave

Extreme indoor heat is dangerous for children, seniors, and pets. If your air conditioner quits during a heat wave, we'll prioritize your call and restore cooling as quickly as possible.

Homeowner fanning themselves during a heat wave

Gas Smells, Burning Odours, or Smoke

The smell of gas, burning odours, or smoke coming from your system is never normal. Leave the area, contact your gas provider if you smell gas, and then call us so we can inspect the system safely.

Homeowner covering their face from smoke indoors

Water Leaking From Your Equipment

Water pooling around your furnace, water heater, or air conditioner can damage floors and finishes fast. Shut off the water supply if you can reach it safely, then call us for an urgent repair.

Water stains from a leaking air conditioner

Frozen or Burst Lines

Frozen refrigerant lines, burst water lines, or a heat pump iced over and unresponsive all need immediate attention. Power the system down and call us before the damage spreads.

Frozen refrigerant line on an outdoor unit

Carbon Monoxide Alarms

If a carbon monoxide alarm goes off and you suspect a combustion issue, get everyone outside and call 911 first. Once you're safe, call us to find and fix the source before the system runs again.

Carbon monoxide alarm on a wall

Fast Response Across Hamilton

When you call, tell us what you're seeing, hearing, or smelling, and our team will walk you through any immediate safety steps, like shutting off the gas supply or powering down the system, before we arrive. We serve Hamilton, Mississauga, Toronto, Niagara, Kitchener-Waterloo, Brantford, and the surrounding areas, and our trucks are stocked to complete most emergency repairs in a single visit.

DHEM Heating & Cooling service van