Furnace repair that finds the real problem, not just a
Quick Restart.
When the furnace quits on a cold night, you want two things: the heat back on, and to know it’s safe. Our technicians find what actually failed, explain the fix in plain terms, and give you the price before any work starts.
Why Choose Markham Heating and Air Conditioning Systems
Family-owned since 1983
TSSA-Registered
WSIB Registered
1000+ Training Hours
100+ 5 Star Reviews
When the house won’t stay warm
A reset might get it running. It won't tell you why it stopped.
No heat, weak airflow, a furnace that keeps short-cycling or won’t hold temperature. Flipping the switch can bring it back for a while, but the part that caused the shutdown is still there. Small faults left alone tend to become bigger repairs, or a cold night with no heat at all.
We test the system, find the cause, and show you what failed and what it costs to fix before we touch anything. If a repair doesn’t make sense on an older furnace, we’ll tell you that too.
Warning signs
Time to book a repair if you notice any of these.
The furnace won't turn on
The thermostat calls for heat and nothing happens. Often an ignition, power, control board or safety switch problem.
It runs, but the air is cool
The fan is blowing but the house never warms up. The burners may not be lighting or staying lit.
It keeps starting and stopping
Short, frequent cycles usually point to an airflow, overheating or flame sensor problem that won’t fix itself.
New or loud noises
Banging, squealing, grinding or a loud boom at startup usually means a part is loose, worn or failing.
A burning or unusual smell
A dusty smell on the first cold day is normal. A smell that sticks around, or anything like burning plastic, needs a look.
A blinking light or tripped breaker
An error code on the furnace, or a breaker that keeps tripping, means a safety control is shutting things down for a reason.
Before you call
Five quick checks that might save you a visit
Safety first
Smell gas? Get out first, then call.
If you smell rotten eggs or sulphur, don’t touch light switches, phones or appliances inside. Get everyone out and leave the door open.
From outside, call your gas utility (Enbridge, for example) or emergency services. Once the immediate danger has been dealt with, call us and we’ll come check the furnace.
- Thermostat on "Heat" and set a few degrees above room temperature. Swap the batteries if the screen is blank.
- Filter. A clogged filter can choke airflow enough to shut the furnace down.
- Power. Check the furnace breaker and the on/off switch near the furnace (it looks like a light switch).
- Outside vents. Snow, ice or leaves blocking the white pipes outside will shut a high-efficiency furnace off.
- Drain line. A kinked, blocked or frozen condensate line can trigger a safety shutoff.
Still nothing? That's what we're here for. Please don't open the furnace or bypass any switches. Call us to book an appointment with a certified Markham Heating technician.
What happens next
No surprises, from the first call to the last test.
You’ll know what’s wrong and what it costs before we start.
01
Book online or call
Tell us what the furnace is doing. On Saturdays we take emergency no-heat calls.
02
We find the cause
We test ignition, flame sensing, airflow, controls and safety switches until we know what failed.
03
You approve the price
We explain the repair in plain terms and give you the price. Other than the diagnostic, nothing gets done until you say yes.
04
Fix, test, safety check
We make the repair, run the furnace through a full cycle and check it’s operating safely before we leave.
Red Tag Removal Service in Markham
Got a red tag? Don’t let anyone scare you into a rushed $10,000 decision. A red tag means a safety issue was found — not that your system is automatically done. We provide honest, independent red tag assessments so you know exactly what’s wrong, what’s required, and what your real options are. No pressure. No upsell. Just answers.
What we fix
Common furnace repairs we handle every winter
We work on most makes and models, including Rheem, Goodman, Carrier, Lennox, Trane, Amana and more.
- Ignitors and flame sensors
- Control boards and error codes
- Gas valves and burners
- Condensate drains, traps and pumps
- Heat exchangers
- Blower motors and capacitors
- Inducer motors and pressure switches
- Limit and rollout switches
- Thermostats and wiring
- Heat exchangers
We carry common parts on the truck. When we don’t have it with us, we tap into our supplier network to source it as fast as possible, so you’re not left waiting.
Repair or replace? You'll get a straight answer.
If your furnace is past 15 years and the repairs are adding up, we’ll show you both prices: the repair, and what a right-sized replacement would cost. Then it’s your call, with no pressure either way.
New Customer Offer
$99$149diagnostic
First time with us? Getting a certified technician out to find the problem is just $99. Call or book online and mention1you're a new customer.
Protection Plans
Members save when repairs come up.
Plan members get priority scheduling when the cold hits, discounts on repairs and a yearly tune-up that catches most problems before they leave you without heat.
Core Comfort
$20/monthOR $240 / yr + tax
Annual furnace tune-up, priority scheduling and repair discounts. Premier plan also available.
What our customers say
Related services
More ways to keep your home warm
Furnace Maintenance
Most breakdowns start small. A yearly 18-point tune-up catches them before the first cold snap.
Furnace Installation
When repairs stop making sense, we size a new furnace to your home and give you options in writing.
Heat Pumps
Service and installation for cold-climate heat pumps, on their own or paired with a furnace.
Furnace repair questions
How much does a furnace repair cost?
It starts with a diagnostic to find the problem ($149, or $99 if it’s your first time with us). Once we know what failed, we give you the repair price before any work starts. If we make the repair on the same visit, the diagnostic counts as a labour credit: that time goes toward your repair, so you’re never charged twice for the same hour.
Do you offer emergency furnace repair?
Yes. We’re open Monday to Friday, 8 am to 6 pm, and offer emergency no-heat service on Saturdays. Call us and we’ll get you on the schedule as soon as we can.
Do you repair furnaces you didn't install?
Yes. We service most makes and models, no matter who installed them. We can process warranty claims with all major manufacturers and source parts for every major brand.
Is it safe to keep running a furnace that's acting up?
If it’s banging, smells like burning, keeps tripping the breaker or your CO alarm has gone off, turn it off and call us. Restarting it over and over can make the problem worse.
Should I repair or replace my furnace?
For most furnaces under 15 years old, a repair is usually the better value. If yours is older and needs a major part, we’ll give you both prices so you can compare.
Do your repairs come with a warranty?
Yes. Every repair carries our standard 45-day repair warranty. Most replacement parts also come with a 1-year manufacturer’s warranty, and we’ll tell you the exact coverage for your part before we start.
Furnace repair across Markham and York Region
Based in Markham, serving homes nearby since 1983.
Markham
Stouffville
East York
Richmond Hill
Thornhill
Toronto
Scarborough
Aurora
Uxbridge
North York
Furnace acting up? Let's get your heat back.
Book online or give us a call. We’ll find the problem, tell you the price and fix it properly.
Mon to Fri 8 am to 6 pm · Saturday emergency no-heat service available
