Who Should You Call For Furnace Repair?

By Geoffrey Sperring

January 26, 2026

When the cold weather arrives, the furnace is essential for the safety and comfort of your family. It's the most important appliance in the home, so when it goes wrong, you need to know who to call for prompt and reliable furnace repair.

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I Think My Furnace Is Broken. Who Should I Call for Furnace Repair?

Before calling a furnace repairman, try these basic checks to see if you can fix the problem.

Check the power. Make certain that the breakers have not tripped.
Check the thermostat. Confirm the thermostat is on and set to heating, and raise the setpoint temperature.
Reset the furnace. Try switching the power off for a few minutes before restarting the furnace.
Inspect the filter. If the furnace is running, but no air is coming out, the filter may be blocked.

Call a Professional Furnace Service or HVAC Repair Company

It's vital to choose a reputable heating furnace repair specialist or HVAC professional. To do this, search for furnace repair near me on your phone and check their reviews. Also, ask your friends for a recommendation. If you need help after hours, look for a company offering 24/7 furnace repairs. Verify that they're familiar with your type of furnace.

How Can an HVAC Professional Help Me?

A heating, ventilation and air conditioning (HVAC) professional will first conduct an assessment to find out why the furnace isn't running. Once the issue is diagnosed, they'll explain what's wrong and discuss the options for repairing the furnace. Having obtained your agreement, they'll prepare a cost estimate and explain how long it may take to repair the unit.

How Much Is Furnace Repair Going to Cost?

According to HomeGuide, the average furnace repair cost is between $125 and $480 (CAD 173 and CAD 664). This includes a labor cost of between $75 and $150 (CAD 104 and CAD 208) per hour, depending on your location. If the furnace is still under warranty, you may only have to pay the labor cost.

Common HVAC Furnace Repair Costs

Some of the more common and lower-cost items that may fail inside a furnace include:

Transformer. The transformer converts the mains voltage to a lower voltage used by the control circuits. Replacement costs, including labor, are from $100 to $250 (CAD 138 to CAD 346).
Thermocouple. This detects that the pilot flame is lit; replacement costs between $100 and $300 (CAD 138 and CAD 415).
Ignitor replacement. Newer furnaces use an ignitor to light the fuel; replacement costs range from $100 to $250 (CAD 138 to CAD 346).
Flame sensor. This safety device checks that the burner is lit; replacement costs between $80 and $250 (CAD 111 and CAD 346).
Blower capacitor. The capacitor is essential for starting the blower motor; expect to pay between $100 and $250 (CAD 138 and CAD 346) for a replacement.
Thermostat replacement. The cost for a new thermostat varies from $190 to $480 (CAD 263 and CAD 664).

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Major Furnace Repair Costs

As the furnace ages, major components wear out. The cost to replace these items is higher, and repairs may take longer. Here are some examples.

Blower Motor Replacement

The blower motor may burn out, or its bearings may fail. The replacement cost of the motor depends on its horsepower and the number of speeds. Typical replacement costs vary from $500 to $2,300 (CAD 692 to CAD 3,181).

Gas Valve Replacement

This safety-critical device controls the flow of gas into the furnace. The solenoid-controlled valve is complex and may have single or multi-stage operation. The cost to replace the gas valve varies between $200 and $800 (CAD 227 and CAD 1,107).

Control Board Replacement

The control board controls the furnace by activating the gas valve, controlling the blower motor and all other functions. Control board replacement costs between $300 and $650 (CAD 415 and CAD 899).

Heat Exchanger Replacement

The heat exchanger transfers heat from the hot gas to the blower air. The heat exchanger may crack, affecting the furnace efficiency and allowing carbon monoxide into the air supply. Replacement costs between $1,000 and $3,000 (CAD 1,383 and CAD 4,149).

Combustion Chamber Replacement

The combustion chamber is where the gas (or oil) burns. It's subject to elevated temperatures and, like the heat exchanger, can crack, allowing exhaust gases into the home. Replacement costs are between $200 and $600 (CAD 277 and CAD 830).

When to Consider Replacing the Furnace

When repair costs mount up, it's time to consider a replacement. If the total repair cost exceeds 50% of the cost of a new unit, it's usually better to get a new furnace. Also, when the furnace is older than 15 years, replacement with a more efficient furnace reduces running costs.

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