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ERM Plumbing & Heating

September 10, 2025

Calgary’s weather has a way of catching people off guard. One week it’s mild, the next you’re waking up to frosty windows and grabbing an extra sweater before heading out. The first real cold snap is when most homeowners realize their furnace is not working the way it should, or worse, not working at all. Taking time now to get your heating system ready can save you from the stress of emergency repairs and help you stay warm all winter.

Why should you check your furnace before the weather turns cold?

Furnaces tend to fail when they’re under stress, and the first time they run for long periods is usually during a sudden drop in temperature. If there is a worn-out part, a dirty filter, or a buildup of dust and debris, it’s better to deal with it while the weather is still mild. A simple check-up now can help your furnace run more efficiently, use less energy, and avoid a breakdown when you need heat the most.

What are the most common warning signs a furnace might fail?

If your furnace is making strange noises like banging, rattling, or squealing, that’s often a sign something is loose or worn out. Inconsistent heating, frequent cycling on and off, or cold spots in certain rooms can also point to problems. A sudden spike in your energy bill without a change in usage is another red flag. Even unusual smells, like a burning or musty odor when the furnace kicks on, can mean it is time for a closer look.

How can a professional furnace tune-up save money and stress in winter?

A tune-up catches small problems before they turn into big, expensive ones. Technicians clean and inspect the system, check for leaks, make sure the thermostat is working correctly, and ensure all components are running as they should. This keeps your furnace operating at peak efficiency, which means you use less energy to heat your home. It also reduces the risk of an untimely breakdown something no one wants to deal with in the middle of a cold snap.

What should be included in a proper furnace maintenance visit?

A thorough furnace service covers both performance and safety to make sure your system is ready for the cold. Key steps include:

  • Cleaning or replacing the air filter
  • Inspecting the blower motor and belt
  • Checking the burners and flame sensor
  • Lubricating moving parts
  • Testing the thermostat
  • Examining the heat exchanger for cracks
  • Performing safety checks for gas leaks and carbon monoxide

What simple things can homeowners do to keep their furnace in top shape?

There are a few easy steps you can take yourself to help your furnace run smoothly.

  • Replace or clean the air filter every one to three months during heating season
  • Keep vents and registers clear of furniture and rugs
  • Make sure the area around your furnace is clean and free of clutter
  • Set your thermostat to a consistent temperature instead of making frequent changes
  • Check that your thermostat batteries are fresh before the cold weather sets in

What should you do if your furnace stops working during a cold snap?

If your furnace suddenly stops, start by checking the thermostat settings, ensuring the breaker has not tripped, and confirming the filter is not clogged. If everything looks fine but there is still no heat, call a professional right away. Avoid trying to fix internal parts yourself.  It is safer and faster to have a trained technician handle it.The winter will be here before you know it. Let ERM Plumbing and Heating make sure your furnace is ready to keep you warm when it counts. Call us today to book your heating system check-up and get your home furnace ready for winter.

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