*$0 Diagnostic Fee with Completed Repair. CALL NOW 587-317-2535

Furnace Repair Calgary

Calgary homeowners’ top choice for furnace installations.

Backed by our 100% guarantee on workmanshipour expert technicians can provide furnace service to any make or model.


Our 30-year old furnace gave up before Christmas. Knight had a new furnace installed within a couple of days. The staff were knowledgeable, considerate, professional, and neat.

Selim Sayegh, Calgary, Alberta
50 years of HVAC experience
Consumer Choice Award 2021 Southern Alberta
Knight Plumbing's best of the best HomeStars award for 2023.
Top Choice Award icon
Better Business Bureau Rating

Furnace Repair and Servicing

For furnace repair, Calgary residents depend on Knight. Whether your furnace is shutting off, you’re in need of fast furnace repair or a furnace tune-up to keep it in top shape, we’re here for you.

We have over 50 years of experience with furnace repair services in Calgary and can keep your furnace running smoothly— or repair your furnace that has stopped working. Knight knows that you want a fast, smooth furnace fix for your furnace problems, and we back our excellent work with our 100% guarantee. We’re proud to have won multiple awards, including the HomeStars Best award for Calgary, many years running. You can read about all of our awards here.

What to Expect From Our Repair Services

There are a lot of reasons why you’ll be glad Knight came to your rescue!

  • You’ll Get Help For Your Furnace Fast – 24/7
  • We Can Fix Any Kind of Furnace– Or any HVAC system, including your hot water tank and air conditioning.
  • No Surprises With Our Up Front Pricing- You’ll know the full price upfront – including parts and labour – before any work begins. There are absolutely no hidden fees.
  • Friendly, Trustworthy Technicians- Our technicians don’t just provide expert HVAC services; they’re clean, friendly, and professional.
  • No Sales Pressure- You’ll get all the viable options and costs – then we leave the decision to you.
  • We Keep Your Home Clean- During every service call, our HVAC technicians wear booties and use protective clothing to keep your home clean. They’ll also make sure the work area is tidied up once they’re done.
  • Our Award-Winning Service- We’re proud to have won multiple awards, including many Consumer Choice Awards and the HomeStars Best award for Calgary in 2016 and 2017. You can read about all of our awards here.
  • Seniors Get a 5% Discount- It’s our way of saying thanks to the people who made Calgary the great city it is today!

* Please note that weather conditions apply.

What Can Cause a Furnace to Stop Working?

There are many reasons why a heating system malfunctions or stops working altogether. Often you can trace them to one of these common furnace problems:

If your furnace is cycling on and off, it puts a lot of stress on the system. You might need to simply change the filter or address a more significant problem like faulty wiring.

Be sure to check all thermostat settings and battery levels.

If this happens, your utility bills are higher than they should be! Your heating system might need some maintenance to get it running efficiently, or a part, like the blower motor, may be broken.

Be sure to change your furnace filter often. If you have a maintenance protection plan, we’ll take care of this for you during our visit.

Puddles or drips are usually related to condensate line or pump issues. An HVAC professional can identify and remedy these problems quickly.

When airflow is blocked due to debris, your furnace can overheat and stop working properly.

If the ignitor is faulty or the flame sensor needs cleaning, your furnace cannot create heat.

If you smell something funny or notice grime on the surfaces in your home, the heat exchanger may be cracked. In this case, call Knight immediately to assess the situation.

How Long Do Furnaces Usually Last?

Repair furnace in Calgary

Furnaces can last up to 15 years, even longer if they are well-kept. (It’s amazing what annual preventative maintenance can do!)

If you have an older heating system and have spent a lot on service calls lately, you may be wondering about repairing vs. replacing your furnace. The answer depends on many factors, for example, overall condition, system safety, energy efficiency and budget. The pros at Knight are ready to can give you expert advice and discuss all the options available to you.

Is it time to replace your furnace? You may want to check out if it’s worth choosing a high-efficiency furnace.

Get the Royal Treatment with our Fast, Affordable Plumbing and HVAC Services

We are Your Knight in Shining Armour

Book Now 587-317-2535

Why Choose Knight?

Over 40 years of service

Knight has been providing quality plumbing services in Calgary AB and the surrounding areas since 1970. Knight has been accredited by the Better Business Bureau since 1991.

Financing options available

We offer financing with low monthly rates. You can finance almost any kind of service we offer.

24/7 emergency service

We have a true 24-7-365 emergency service with a real person answering the phones: no callbacks, no answering machines, no voicemail.

Award-winning customer service

Let us show you the quality of service that earned us several awards – including the HomeStars Best of Award in 2016, 2017, 2018, 2019, 2020 and 2021!

Full price quote in advance

We never have hidden fees, so you always know what your service will cost before we even start.

100% satisfaction guaranteed

We stand behind our work, and if we fail to completely satisfy you, we’ll happily work with you until we do. The job isn’t done until you’re satisfied.

Service area map

Furnace Service Area

We provide furnace installation and repair services to Calgary, Alberta and its surrounding areas:

Furnace Service Area

Useful Furnace Tips