Always Plumbing & Heating

Page is Loading...

Help! My Furnace Is Blowing Cold Air

Furnace Repair

Don’t shiver in frustration! If your furnace is blowing cold air check out our latest blog full of tips to get that warm air back flowing.

Posted by Glenn | November 1, 2024 | Reading Time:

If your furnace is blowing cold air don’t panic! This frustrating issue is more common than you think!

And hey, some good news, it can usually be fixed without too much hassle.

Whether it’s a simple thermostat glitch or something more serious, the 5 Star Superstars at Always Plumbing & Heating will guide you through the possible causes and solutions to get your furnace back to blowing warm air fast!

Our experienced technicians have been repairing furnaces in Edmonton and the surrounding areas for over 20 years. We come to you in fully stocked service trucks with all the latest tools and equipment and we’re ready to answer any questions you may have. 

Let’s get warm and cozy with today’s blog!

A serene winter landscape in Edmonton, Alberta, features a blanket of white snow covering the ground.


View through an old wooden window, a vertical view reveals the river valley, with high-rises in the background and snow-covered triangular conservatories in the foreground.


Inside their living room, a young couple bundled in thick sweaters gazes out at the picturesque winter scene.

Common Causes & Fixes

Here are the most common culprits of why your furnace could be blowing cold air that our technicians have seen over the years.

Dirty Air Filters

When your furnace’s filter gets too dirty, it significantly restricts airflow, causing your furnace to overheat. As a result, the unit’s safety measures will kick in to shut off the burner, but potentially keep the fans running thus blowing cold air into your home. 

The fix? Try changing your filters every 1-3 months to keep your furnace working as it should. A new filter means better air flow and a warmer home!

Incorrect Thermostat Settings

Before jumping off the deep end and down the rabbit hole of furnace malfunction, take a minute to check your thermostat.
It may sound simple, but incorrect thermostat settings can actually make your furnace blow cold air instead of hot. Start by making sure it’s set to “auto” and not “on”. This ensures that the fan is only operating when the furnace is actively heating. Also don’t forget to check that your thermostat is set to “heat”. Seriously, this is an easy mistake to make especially as we transition from summer to fall to winter.

Exhaust Blockages

The exhaust flue plays a critical role in making sure harmful gasses like carbon monoxide are quickly removed from your home.

If the flue gets blocked by debris, snow or ice the furnace may shut off in order to keep the gasses from entering your home. Another handy safety feature, that unfortunately results in cold air.
Hire one of our professional technicians to come and make sure that your flue is clear and free from obstructions. Most exhaust flues are located on the top of your roof, and we don’t want you up there!

Replacing a dirty old air filter in the HVAC furnace system in a home basement.


A close-up of a woman adjusting the thermostat as part of her smart home system indoors.


A furnace exhaust pipe releases steam outdoors in the cold winter air.


Ductwork in the hallway of a wooden-framed construction project demonstrates that even if the furnace is functioning properly, leaks in the ductwork can allow cold air to circulate throughout the home.

Leaks In Your Ductwork

Even if your furnace is working just fine, leaks in your ductwork can cause cold air to circulate through your home instead of the warm air you’re expecting. Because these leaks let warm air escape before it reaches your living areas.

Always be sure to inspect and seal any cracks or seams in your duct work you may come across. It may also be worth investing in some extra insulation around your ducts for an extra layer of protection.

When To Call in the 5 Star Superstars at Always Plumbing & Heating

In addition to the cold air you might be dealing with, if you’re also experiencing frequent cycling or strange noises or smells, it’s time to give our experienced repair technicians a call.

What To Expect

When you book your furnace repair, a trained heating technician will come to your home to begin the evaluation process.

During your evaluation your technician will carefully examine your furnace looking for signs of damage, connection issues, odours, dirty filters and possible leaks in the connecting ductwork. This evaluation will quickly give you the best repair options for your specific needs.

All of our repair recommendations are thoroughly explained and you’ll have the peace of mind of knowing there are no hidden fees or surprises with Always Plumbing & Heating’s StraightForward Pricing. 

Once your repair quote has been confirmed your technician can get right to work! They will begin by safely disconnecting your furnace and repairing the affected components. 

Our technicians always maintain a clean and efficient workspace, you won’t even know we were there!

Once your repair is complete, your technician will troubleshoot to ensure any and all issues have been addressed, and as an added bonus, they will also replace your furnace filter to ensure warm, high-quality air for months and years to come.

A repair technician removes the furnace service panel, emphasizing the importance of regular tune-ups from Always Plumbing & Heating to extend the life of your furnace and ensure warm air flows consistently— a foolproof way to maintain home comfort year-round.

An Always Plumbing & Heating technician prepares for a job by gathering tools from the work vehicle, followed by a shot of the technician standing outside the vehicle, smiling after successfully completing a service.

The Power of Preventative Maintenance

Extend the life of your furnace, and keep that warm air flowing, with regular tune-ups from Always Plumbing & Heating. The foolproof way to maintain home comfort year round!

Your heating technician will always run through the following steps during your tune-up service to allow for efficient, long-lasting heat:

  • Complete troubleshooting from top to bottom
  • Component cleaning
  • Air flow and quality inspection
  • Energy efficiency inspection
  • Replace air filters
  • Check thermostat settings

And after your tune-up is complete, consider joining our Diamond Maintenance Program for continued peace of mind year in and year out.

When you sign up for either our Premier Diamond or Lifetime Diamond memberships you’ll enjoy prompt service, exclusive discounts and free tune-ups! Discover, join and save today.

Don’t shiver in frustration! By addressing common issues like dirty filters, thermostat issues and blocked flues quickly, you can get your furnace back on track before you know it! A warm and cozy home is just a call away!

Since 1998, our Edmonton and Area customers have been trusting Always Plumbing & Heating to provide them with 5 Star Superstar Service. We’re backed by the Better Business Bureau and we’re proud to have over 2500 positive reviews on Google. Give us a call today, we can’t wait to meet you!

See you next time!

A wide shot captures the Always Plumbing & Heating team standing in uniform beside their work vehicles, with the brand mascot at the center. Since 1998, customers in Edmonton and the surrounding area have trusted Always Plumbing & Heating to deliver 5-Star Superstar Service.

Frequently Asked Questions

How much does furnace repair cost?

Furnace repair costs depend greatly on the complexity and severity of the heating issue, or any damage. Give the friendly team at Always Plumbing & Heating a call today for your no obligation repair quote.

How long does furnace repair take?

The time it takes to repair your furnace will also vary due to the complexity of your furnace issue. However, we understand the importance of prompt repair service, that’s why our team is proud to offer same day, 24/7 emergency service to get your furnace back up and running.

How can I prevent furnace repairs?

The best way to prevent future repairs and maintain your furnace is by signing up for Always Plumbing & Heating’s Diamond Maintenance Program for exclusive discounts and front of the line service. Contact us today to learn more.

Can I repair my furnace myself?

While some maintenance tasks such as replacing a dirty air filter can be done on your own it’s best to leave furnace repair to the professionals at Always Plumbing & Heating. We have over 20 years experience servicing various makes and models, and can quickly diagnose the issue and prevent it from happening again. Call us today!

What warranties do you offer?

Through our Diamond Maintenance Program we offer 2 year service and repair extended warranties; as well as, 10 year equipment extended warranties. Contact our 5 Star Superstar team today!

Phone IconBook OnlineOpen Live Chat