Furnace Repair in Markham

Q: Do you offer a warranty on repairs?

Yes. Parts we install carry the manufacturer warranty, usually one to five years depending on the component. Our labour is backed by a 1-year workmanship guarantee. If the same part fails again within that window, we come back and replace it at no cost.

Q: Should I fix my old furnace or replace it?

A good rule: if the repair cost times the furnace age in years is over $5,000, replacement usually makes more sense. A 20-year-old mid-efficiency unit needing a $600 repair is borderline. We run both numbers and let you decide. Ask about current Enbridge Gas and federal rebates on replacement.

Need furnace repair in Markham today? North Wind HVAC Pro sends a TSSA-approved technician to your door the same day, seven days a week. We cover Unionville, Cornell, Berczy, Milliken, Wismer, Markville, Cathedraltown, and Markham Village. Call (647) 558-5528 for regular service or 1-877-707-1615 for 24-hour emergencies. Diagnostic is $89 to $149. Most repairs run $150 to $600.

Common furnace problems in Markham homes

Markham has a real mix of housing stock, and the furnace issues reflect that. In older Markham Village and parts of Milliken built in the 1970s and early 1980s, we still see mid-efficiency furnaces pushed well past 20 years. Common calls: cracked heat exchangers, pilot and thermocouple failures, short cycling from dirty burners, and blower motors that finally give up during the first cold snap. A lot of these homes also have undersized return air ducts, so we often find the furnace overheating and tripping the high-limit switch on the coldest days.

In newer estate builds across Cathedraltown, Cornell, and Berczy, the systems are usually high-efficiency two-stage or modulating units. Different problems show up there: condensate drain blockages, pressure switch faults, flame sensor fouling, ignition control board failures, and thermostat wiring issues after a smart thermostat swap. If the furnace is blowing cold, tripping on limit, or throwing a flashing LED code, we can read the fault and fix it the same visit in most cases. We see a lot of Nest and ecobee wiring mistakes on builder-grade 24V systems, especially when the original stat was a simple two-wire heat-only control.

Across Unionville, Wismer, and Markville, the housing mix is somewhere in between: 1990s and 2000s builds running 80% AFUE or early high-efficiency units on their second blower motor. Typical repair work here is inducer fan bearings, draft motor replacement, and hot-surface igniter swaps. If the furnace is 15 to 18 years old and hasn’t been serviced annually, expect to spend a bit on tune-up parts during the first service visit.

Our repair process

When you call, we book a two-hour window, not a vague all-day slot. Our technician arrives in a marked truck stocked with capacitors, igniters, flame sensors, inducer motors, gas valves, control boards, and the common OEM parts for Lennox, KeepRite, Goodman, Tempstar, Ruud, and Comfortmaker. Every tech on our team is TSSA-certified, so any gas-side work is signed off legally and safely.

On site, we run a full diagnostic: combustion analysis, gas pressure check, safety switch test, and a visual of the heat exchanger. You get a written quote before any repair starts. No surprise charges. If we can’t fix it today because a part needs to come in from the distributor, we tell you straight, and we don’t charge a second trip fee. We also walk through what we found in plain English, and if English isn’t your first language, we’re patient and happy to slow down, draw diagrams, or explain things a different way until it makes sense.

Furnace repair cost in Markham

Here’s what real repairs cost in Markham right now, parts and labour included:

Diagnostic visit: $89 to $149, waived if you approve the repair
Flame sensor clean or replace: $150 to $220
Thermocouple or igniter: $180 to $320
Blower capacitor: $180 to $290
Pressure switch: $240 to $380
Inducer motor: $420 to $680
Control board: $450 to $750
Gas valve: $480 to $720

Most Markham repair calls land in the $150 to $600 range. If your furnace is 18 years or older and needs a major part like a heat exchanger or control board, it’s often smarter to put that money toward a new furnace installation. We’ll give you both numbers so you can decide.

Emergency and after-hours service

If you smell gas, get out of the house and call Enbridge at 1-866-763-5427 from outside. Don’t flip switches, don’t use the phone indoors. Then call our emergency line at 1-877-707-1615. For no-heat calls at night, on weekends, or on statutory holidays, we dispatch a technician the same day. Saturday and Sunday are covered at the same rates as weekdays. Review Enbridge’s natural gas safety guide if you’re unsure what to watch for.

A few signs that mean you should call right away: rotten-egg smell near the furnace or any gas line, a yellow flame instead of blue, soot around the vent, a carbon monoxide alarm going off, or the furnace making a loud booming sound on startup (delayed ignition). For no-heat in a house with small kids, elderly family members, or exposed water pipes in an unheated basement, don’t wait. Call, and we’ll get a tech moving.

Markham neighborhoods we serve

We run daily routes through Unionville, Cornell, Berczy, Milliken, Wismer, Markville, Cathedraltown, and Markham Village. We also cover the commercial and mixed-use stretches along Highway 7, Kennedy, McCowan, Warden, and Woodbine, plus Thornhill and Box Grove on the edges. If you’re outside Markham, check our full service area, or see our Toronto and Vaughan pages.

Brands we service

Our technicians are trained and parts-stocked on Lennox, KeepRite, Goodman, Tempstar, Ruud, and Comfortmaker. We also work on Carrier, Bryant, Trane, Amana, York, Rheem, Payne, and Armstrong. If your unit is under manufacturer warranty, we handle the paperwork.

Frequently asked questions

How much does furnace repair cost in Markham?

A diagnostic is $89 to $149 and is waived when you approve the repair. Typical repairs range from $150 to $600 all in. Common fixes like flame sensors, igniters, and capacitors sit on the lower end. Inducer motors, control boards, and gas valves push toward the upper end. You’ll always get a written quote before any work starts.

I smell gas near my furnace. What do I do?

Leave the house immediately. Don’t use light switches, don’t use your phone indoors, don’t start a vehicle in an attached garage. From outside, call Enbridge at 1-866-763-5427, then call us at 1-877-707-1615. We’ll dispatch a TSSA-certified gas technician to diagnose the leak once the line is made safe.

How fast can you get to my Markham home?

Same-day service is our standard, seven days a week. Most Markham calls booked before 2 pm get a technician on site the same afternoon. No-heat emergencies are prioritized over non-urgent work and typically see a tech within two to four hours. During extreme cold weather alerts, we extend dispatch hours and add weekend crews so nobody sits in a cold house overnight.

Do you offer a warranty on repairs?

Yes. Parts we install carry the manufacturer’s warranty, usually one to five years depending on the component. Our labour is backed by a 1-year workmanship guarantee. If the same part fails again within that window, we come back and replace it at no cost.

Do you charge extra for Saturday or Sunday calls?

No weekend premium. Saturday and Sunday rates match weekday rates. After-hours overnight emergency calls (between 10 pm and 7 am) do carry a dispatch surcharge, which we disclose when you book.

What furnace brands do you repair?

We service every major brand sold in Ontario: Lennox, KeepRite, Goodman, Tempstar, Ruud, Comfortmaker, Carrier, Bryant, Trane, Amana, York, Rheem, Payne, and Armstrong. Our trucks carry common OEM parts for all of them, so most repairs finish in one visit.

Should I fix my old furnace or replace it?

A good rule: if the repair cost times the age of the furnace in years is over $5,000, replacement usually makes more financial sense. A 20-year-old mid-efficiency unit needing a $600 repair is borderline. We’ll run both numbers honestly, factor in your gas bills, and let you decide. If you choose to replace, ask about current Enbridge Gas and federal rebates. High-efficiency furnaces (96% AFUE and up) typically cut Markham heating bills by 20 to 30 percent versus a 30-year-old mid-efficiency unit.

Do you service commercial furnaces in Markham?

Yes. We service residential furnaces as well as light commercial rooftop units and suspended gas unit heaters for shops, warehouses, and small offices along the Highway 7 and Woodbine corridors. Call our main line and mention it’s a commercial site so we can dispatch a tech with the right gear.

Book furnace repair in Markham today

Call (647) 558-5528 for same-day furnace repair anywhere in Markham. After hours or no-heat emergency: 1-877-707-1615. TSSA-approved, 5.0 stars across 104 reviews, flat-rate pricing, no weekend premium. Prefer to reach us online? Use our contact form. Need general furnace repair info or AC repair? We’ve got you covered year round.