How Much Does Furnace Repair Cost in Calgary?
Most Calgary homeowners who ask about furnace repair cost end up paying somewhere between $200 and $1,500 for the fix, and the $149 service call is what finds the fault in the first place. That range is wide because a furnace has cheap parts and expensive parts, and the price on your invoice depends almost entirely on which one failed. Below are the numbers we actually charge at Calgary Air Heating and Cooling Ltd, what pushes them higher or lower, and how to tell when a repair stops making sense on an older unit.
Furnace Repair Cost at a Glance
A diagnostic visit costs $149 during regular hours and $289 after hours in heating season. Once the technician knows what failed, small repairs like a flame sensor or igniter usually land between $200 and $450, while motors, control boards and gas valves run from about $500 to $1,500. At the top of the scale sits the heat exchanger, which can cost $1,500 to $3,500 or more depending on the model and whether the part is still covered by the manufacturer.
Every figure here is a typical range, since the final price depends on your equipment, the part and what the diagnosis turns up. Our furnace repair service page explains how a visit works, and you can ask for the repair price before agreeing to any work, so you can say yes or no with the full cost in front of you.
What the Service Call Pays For
The $149 service call covers a licensed HVAC technician coming to your home, testing the system and pinning down the actual fault. That matters more than it sounds, because many furnace issues share the same symptom. A furnace that lights and then shuts off after a few seconds could have a dirty sensor, a poor ground or a venting problem, and those three furnace repairs sit at very different prices.
During heating season we also take evening and weekend calls, and that after-hours call is $289. We offer emergency furnace repair because a furnace does not wait for Monday when it quits during a cold snap. That said, if your house is holding temperature and nobody is at risk, booking the next regular slot saves you $140 before a single part gets ordered.
Typical Furnace Repair Costs by Part
| Repair | Typical cost |
|---|---|
| Flame sensor | $200 to $350 |
| Igniter | $250 to $450 |
| Gas valve | $500 to $900 |
| Control board | $500 to $1,200 |
| Inducer motor | $600 to $1,200 |
| Blower motor | $600 to $1,500 |
| Heat exchanger | $1,500 to $3,500 and up |
The flame sensor is a thin metal rod that tells the control board the burners actually lit, and when it gets coated the board loses the flame signal and shuts the burners off as a safety measure. Some homeowners clean their own, and our guide on how to clean a flame sensor on a furnace walks through it, although a sensor that keeps fouling usually points to something else in the burner area.
Motor type explains why the blower has the widest range on the list. Older furnaces use a PSC blower, which is simpler and cheaper to replace, while newer high-efficiency units often use an ECM, a variable-speed design with its own electronics that can cost two to three times as much. Control boards follow a similar pattern, because brand and model decide the parts price more than the labour does.
What Is the Most Common Furnace Failure?
The most common furnace failures are ignition and airflow problems, usually a dirty sensor, a worn igniter or a clogged filter. They cause most no-heat and short-cycling calls in winter, and fortunately all three sit at the cheap end of the list. Igniters, meanwhile, are a wear part, since they heat up and cool down every cycle for years, and once one cracks the burners fail to light and the system locks out after a few attempts.
A plugged filter deserves a special mention because it causes problems that look like something else. When air cannot move through the system, the furnace runs hot, the high limit switch trips, and the burners shut off until things cool down. So the homeowner sees a furnace turning on and off, calls for a repair, and the real fix turns out to be a $10 filter. If your furnace is acting up, our article on why a furnace stops working covers the checks worth doing before you call anyone.
What Is the Most Expensive Repair on a Furnace?
The heat exchanger is the most expensive repair on a furnace and the most expensive part to fix, at $1,500 to $3,500 or more. It sits at the core of the unit and separates the flame and combustion gases from the air that goes to your rooms, so replacing it means taking much of the furnace apart.
Coverage makes a big difference here. Many manufacturers cover this part for a long time, sometimes longer than the rest of the furnace, so the component itself may cost you nothing. Even then, the labour to swap it is substantial, and that is why the bill still lands in four figures. On a unit past 15 years, this is usually where replacing the whole system makes more sense.
A cracked exchanger is also a safety issue, because a crack can let combustion gases, including carbon monoxide, into the airstream. If a technician finds one, the furnace usually gets shut down until it is dealt with. We explain the link in our piece on whether an old furnace can cause carbon monoxide, and if a CO alarm sounds, leave the house, call 911 from outside, and then call us.
Factors That Affect Furnace Repair Cost
The part that failed sets most of the price, but several other factors push the average furnace repair up or down.
Age and parts availability
An older furnace tends to cost more per repair, since parts for discontinued models can be harder to find and sometimes need a universal replacement that takes longer to fit. Beyond parts, age matters because on an older unit the next failure tends to follow sooner.
Brand and equipment type
We repair all major furnace brands, regardless of who did the installation. However, premium models with variable-speed blowers and modulating gas valves carry pricier components than a basic single-stage gas furnace, so two homes with the same problem can pay different amounts.
When the furnace breaks
A failure on a weekday afternoon costs the standard $149 to diagnose, while the same fault on a Saturday evening during heating season carries the $289 after-hours rate.
Warranty coverage
Parts under a manufacturer warranty can take a large repair down to labour only. Find the registration paperwork for your furnace before the technician arrives, because the serial number decides what is covered.
Is It Worth Fixing a Home Heating Furnace?
Yes, in most cases it is worth fixing a home heating furnace, especially when the unit is under 15 years old and the repair is one of the smaller items on the list. Replacing a $300 igniter on a ten-year-old furnace is an easy decision. If you are not sure of the age, our guide on how to tell how old your furnace is shows where to look on the unit.
The math changes as the furnace ages and repair costs grow. A common rule of thumb in the HVAC trade multiplies the age of the furnace by the repair cost, and if the result is above $5,000, replacement deserves a serious look. For example, a $600 repair on a 12-year-old unit comes to $7,200, which suggests you should at least check the cost to replace it before deciding whether to repair or replace.
A new furnace installation from Calgary Air runs $5,000 to $8,000, and our breakdown of what a new furnace costs explains where a given home lands in that range. Our furnace replacement service includes free quotes on new installations, so you can compare repair and replacement on paper. We will also tell you plainly when repair beats replacement, which it frequently does.
Should a 25-Year-Old Furnace Be Replaced?
In most cases, yes, a 25-year-old furnace should be replaced rather than put through another round of major repairs. Most gas furnaces last somewhere around 15 to 20 years, and our article on how long a furnace lasts covers what shortens or stretches that. At 25, a unit has outlived the average service life, and it was built to efficiency standards well below those of current models.
That does not mean you must replace it tomorrow. If your furnace needs a $250 igniter and the rest of the system checks out, a small repair can buy you time to plan and budget, even though the age rule flags it. A major part on a furnace that old is a different story, though, because you would be putting $500 or more into equipment that is likely to need something else soon.
Keeping Furnace Repair Costs Down
The cheapest repairs are the ones you never need. Our furnace maintenance service is $149 for a standard tune-up, and each additional piece of equipment we service on the same visit is $99. During a tune-up, the technician cleans the sensor, checks the igniter, tests safety controls and inspects the exchanger, which is where a lot of costly surprises get caught early. Between visits, change the filter on schedule. That single habit prevents a good share of the airflow problems described above, and it costs almost nothing.
Frequently Asked Questions
How much does furnace repair cost after hours?
The after-hours service call is $289 during heating season, including evenings and weekends, compared with $149 during regular hours. We quote the repair itself separately once the fault is found. Availability depends on call volume and weather, so we do not promise a set arrival time.
Can I fix my furnace myself to save money?
You can change the filter, check the thermostat batteries and make sure the power switch is on. Some people also clean the flame sensor. Anything involving the gas valve, burners or heat exchanger belongs with a licensed HVAC technician, since a mistake there creates a safety problem and can void your coverage.
Does a furnace warranty cover repair costs?
Usually it covers parts, and labour only for a limited time, depending on who installed the unit. New furnaces from Calgary Air carry a 10-year parts warranty with product registration and a 1-year labour warranty. There is also an optional 10-year labour warranty, available when the system gets annual maintenance through us at $149 a year, and it transfers if you sell the house. Our article on how long furnace warranties last explains how manufacturer coverage usually works. To book a repair or get a price, call (403) 720-0003.