Markham, Ontario

HVAC and Furnace Repair in Markham, ON

Heating and cooling repair in Markham is seasonal and urgent: no heat in January or no cooling in a July heat wave puts people at risk, and the trades know it. This page shows HVAC companies serving Markham, what Ontario’s gas-safety rules require, and how to keep an emergency call from turning into an unnecessary replacement.

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HVAC and Furnace Repair near Markham

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What to know before hiring a HVAC technician in Markham

Anything that touches gas in Ontario, including a furnace, boiler, gas fireplace or gas water heater, must be worked on by a certified gas technician and often needs a permit through Technical Standards and Safety Authority (TSSA). Ask for the technician’s gas ticket and the permit number for any installation or major repair.

If you smell gas, leave the building before you make any call, then phone your gas utility’s emergency line or 911 from outside. Do not use switches, phones or appliances inside. For a furnace that has simply stopped, check the thermostat batteries, the furnace switch, the breaker and the filter before booking a service call; those four checks resolve a surprising share of no-heat calls.

Markham grew from farmland into a city of 340,000 in about thirty years, so most of its housing is post-1985 subdivisions in Unionville, Milliken, Cornell and Berczy, with a fast-growing condo core in downtown Markham where towers are heated and cooled by a district energy system rather than in-suite furnaces. Older homes exist in the historic villages of Unionville, Thornhill and old Markham. York Region handles water and sewer; the City issues building permits and Alectra supplies electricity.

Have this ready when you call

  • Furnace or heat pump make, model and approximate age
  • What the unit does when you call for heat or cooling
  • Any error code on the furnace board or thermostat
  • Filter condition and when it was last changed
  • Rebate paperwork if you are considering replacement

Questions to ask before booking

  1. Are your technicians gas-certified, and can I see the ticket?
  2. Is the diagnostic fee credited toward the repair?
  3. Will you show me the failed part and explain the diagnosis?
  4. Is a replacement quote independent of the repair quote?
  5. Do you handle the permit and any rebate paperwork?

Frequently asked questions

Do I need a permit to replace a furnace in Markham?

In Ontario a gas furnace replacement needs a gas permit through Technical Standards and Safety Authority (TSSA) and is inspected; a heat pump or air conditioner usually needs an electrical permit as well. Reputable installers include the permits in the quote.

Should I repair or replace an old furnace?

Get the diagnosis first. A failed igniter or blower motor on a 12-year-old furnace is usually worth repairing; a cracked heat exchanger on the same furnace usually is not. Ask for both numbers in writing and compare the replacement cost with rebates included.

Why is my heat pump running constantly in a Markham winter?

Cold-climate heat pumps are designed to run long cycles at low speed, which is normal. Constant running with the house still cold, ice building on the outdoor unit, or backup heat coming on early are the signs that need a technician.

What is a fair HVAC diagnostic fee?

Fees vary by company and by time of day; what matters is whether it is disclosed before the visit and whether it is credited if you approve the repair. Get that in writing when you book.

Read before you book

  • Furnace and AC repair in MarkhamMarkham’s subdivisions in Unionville, Milliken, Cornell and Berczy were equipped by the builder and age together, while the towers in downtown Markham are heated and cooled by a district energy plant. What fails, what to check first, who may do the work in Ontario, and how to compare repair with replacement.
  • Furnace repair in VancouverWhat to check before booking furnace repair in Vancouver, how BC gas licensing and permits affect your quote, and when replacement and rebates make more sense.
  • Furnace repair in TorontoWhat to check before a no-heat call in Toronto, why condo heating is a different problem from a house furnace, what TSSA certification means, and the questions that keep a repair from becoming a replacement.

Nearby communities

Trades based in Markham usually cover the surrounding area, and trip charges often change at municipal boundaries. Ask how travel is billed before booking.

Other repair services in Markham

Or start from the Markham repair hub.

Sources

  1. Electrical Safety Authority (ESA)Licensing and permits for electrical work in Ontario.
  2. Technical Standards and Safety Authority (TSSA)Gas and fuel safety in Ontario.
  3. Consumer Protection OntarioConsumer rights, contracts and deposits.
  4. WSIBWorkers’ compensation coverage and clearance letters.

Rules and programs change. Confirm with the source and get a written quote before deciding.

For businesses

Run a HVAC technician business in Markham?

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