By Tarik, Senior HVAC Specialist, Air Climatisation VS
Quick Takeaway
If your AC just died in the middle of a Montreal heat wave, you need a licensed technician today, not a callback in three days. Air Climatisation VS offers same-day emergency service across the Island, Laval, the South Shore, and the North Shore. Call us first and skip the waiting game.
Your AC Stopped Working on the Hottest Day of the Year. We Get It.
It’s 35°C outside. The humidex says it feels like 42°C. Your unit is running but blowing warm air, or it’s not running at all. Maybe it’s making a noise you’ve never heard before. You’ve got kids at home, an elderly parent in the next room, or you’re just trying to work from home without losing your mind.
This isn’t a minor inconvenience. In Montreal summers, a broken AC is a health issue. And I say that having spent 14 years responding to exactly these calls, from Plateau triplexes to brand-new builds in Brossard, from downtown condos to postwar bungalows in Laval.
Why Montreal AC Emergencies Hit Harder Than Anywhere Else
Montreal’s heat waves are brutal and they come fast. When the city flips from a pleasant 24°C to a 35°C humidex event in 48 hours, every AC technician in the region gets flooded with calls simultaneously. Most companies book out days, sometimes weeks, in advance during July and August.
That delay isn’t just uncomfortable. For older residents or young children, it can become dangerous quickly. Our team has over 100 years of combined experience across Greater Montreal, and every summer we see the same pattern: people wait too long to call because they hope the unit will fix itself, and by the time they reach out, they’re deep into day two of sweltering heat.
Don’t wait. The faster you call, the faster we can diagnose and fix it.
The Most Common AC Failures We See in Montreal Homes
Frozen Coils
Think of your evaporator coil like a cold glass of water on a humid day. When airflow is restricted, often from a dirty filter or blocked return vent, moisture freezes on the coil and the system essentially chokes itself. The unit runs but moves no cold air. This is one of the most common calls we get on peak summer days.
Refrigerant Leaks
Refrigerant is the substance that actually moves heat out of your home. A leak doesn’t mean your system explodes. It means it slowly loses its ability to cool, like a car running on a nearly empty gas tank. You’ll notice your home cooling less efficiently over days or weeks before full failure. Refrigerant work requires an RBQ-licensed contractor, and ours is #5804-1500-01.
Capacitor Burnout
The capacitor is what kicks your compressor and fan motors into gear. It’s a small component but when it fails, nothing starts. This is extremely common on aging units, especially those pre-2000 central AC systems you’ll find throughout NDG, Rosemont, and across the West Island. On a 35°C day, capacitors burn out at a much higher rate because the heat stress is real.
Thermostat Failures
Sometimes the fix is simpler than you think. A miscommunicating thermostat can make a perfectly functional AC unit appear completely dead. We always check this first because it saves everyone time and money.
Wall-Mounted Mini-Split vs. Central System: Does It Matter for Emergency Repairs?
Short answer: no, we handle both.
If you live in a Plateau triplex or a downtown condo, you’re probably running a wall-mounted mini-split, either a Mitsubishi Electric unit or a Goodman. If you’re in a house in Longueuil, Laval, or the West Island, you likely have a central ducted AC system.
The repair process is different, but the urgency is identical. As an authorized dealer for Mitsubishi Electric, we have direct access to parts and manufacturer support for mini-split repairs. That matters when availability is tight during a heat wave. For central systems, our team has handled thousands of emergency AC and HVAC repair calls across Greater Montreal and knows every era of equipment you’ll find in this city.
A central system distributes air the way a ceiling fan moves air across a whole room: smooth, even, and everywhere at once. A wall-mounted unit works more like a desk fan pointed at one spot, highly effective in that zone but dependent on proper function of each individual unit. When either fails, the whole comfort equation breaks down.
What Emergency AC Repair Actually Costs in Montreal
I’m going to be straight with you because anxious homeowners deserve transparency, not vague “call for a quote” answers.
Our service call is a flat $235. That covers travel and the first full hour of diagnostic and repair. If the work runs longer, additional time is billed at $125/hour. Taxes extra. We’ll always walk you through the diagnosis before any additional work begins. No hidden fees.
We also offer financing through Financeit if a more significant repair or a full replacement turns out to be the right call.
Speaking of which: if your unit is beyond repair, a new installation may qualify for LogisVert or Hydro-Québec energy efficiency subsidies. Emergency repair calls don’t qualify, but a replacement absolutely can, and we’ll flag that for you if it applies.
We Cover All of Greater Montreal, Including Your Neighbourhood
We get calls from everywhere: Plateau-Mont-Royal, Rosemont, NDG, Verdun, Côte-des-Neiges, LaSalle, Saint-Laurent, the West Island (Dollard-des-Ormeaux, Pointe-Claire, Kirkland), Laval, Longueuil, Brossard, Saint-Bruno, Repentigny, Terrebonne and all points in between.
With 9,500 installations completed and 350+ five-star reviews across the region, we’ve almost certainly worked in your neighbourhood before. That matters when your technician needs to know the quirks of older Montreal housing stock: the tight mechanical rooms in triplexes, the crawlspace central units in postwar bungalows, and the rooftop equipment in condo towers.
FAQ
Q: How fast can you actually get to me in an emergency?
Same-day service is our priority for emergency calls. Response time depends on your location and current call volume. During peak heat waves, evenings and weekends can be busier. Call as early in the day as possible to maximize your chances of a same-day appointment.
Q: My AC is 15+ years old. Is it worth repairing or should I just replace it?
It depends on the failure and the overall condition of the unit. We’ll give you an honest assessment on-site. As a general rule, if the repair cost approaches 50% of a new unit’s price and your system is aging, replacement often makes more financial sense, especially since a new installation may qualify for LogisVert or Hydro-Québec subsidies.
Q: Do you need to come to give me a price, or can you quote over the phone?
For repairs, we diagnose on-site because there’s no reliable way to quote a repair without seeing the unit. Our service call pricing is transparent upfront and there are no hidden fees.
Don’t Sweat It. Book Your Emergency AC Repair Today.
If your AC is down, the next step is simple: contact Air Climatisation VS for same-day emergency service across Greater Montreal. Our team is RBQ licensed (#5804-1500-01) and we’ve been doing this for 14 years. You’ll talk to someone who actually knows Montreal summers, not a call centre.