Wondering why your furnace runs non-stop once the cold hits?

Wondering why your furnace runs non-stop once the cold hits? In Northern Ontario, that’s often normal — but not always. Here’s what’s actually happening.

Ever notice your furnace seems to run constantly once the real cold hits? In Northern Ontario, that’s a common concern — and in many cases, it’s completely normal. Our winters are long, cold, and demanding on heating systems, especially in places like Sault Ste. Marie where temperatures can stay well below freezing for extended periods.

A furnace is designed to maintain indoor temperature, not cycle on and off quickly in extreme cold. When outdoor temperatures drop significantly, your system has to work harder and longer just to keep up. That means longer run times, fewer breaks, and sometimes what feels like “non-stop” operation.

That said, there’s a difference between normal operation and a system that’s struggling. Poor insulation, air leaks, dirty filters, incorrect thermostat settings, or an aging or undersized furnace can all cause excessive run times. In those cases, the furnace isn’t just working hard — it’s working inefficiently.

In Northern Ontario homes, especially older or rural properties, long furnace run times are often a sign that the system is doing exactly what it was designed to do. But if your home isn’t staying warm, your energy bills are climbing, or the furnace never seems to reach temperature, it may be time to have it checked.

If you’re unsure whether your furnace is running normally or working overtime, a simple inspection can give you clarity — and peace of mind — before winter really settles in.

Call or text 705-297-6696
www.stellarhvac.ca
contact@stellarhvac.ca
Serving Sault Ste. Marie and the Algoma region.