SolvedHeating Repair
Anyone dealt with a furnace short cycling every few minutes in Ottawa?
Asked by Mason Thompsonin Ottawa, Ontario· 4/3/2026· 1305 views
I'm in Ottawa, Ontario and dealing with a 7-year-old furnace in our semi-detached home. Over the last month, it has been short cycling every few minutes and we're now noticing our energy use jumped before the comfort issue became obvious.
One contractor quoted C$2,143 for repair, while another jumped straight to a C$8,256 replacement because of the age. The weather here has been dealing us deep winter heating demand, so I do not want to wait too long, but I also do not want to approve the wrong scope.
If you were comparing bids on this, what would you want checked first? I especially want to know how much weight you would give to static pressure, filter restriction, flame sensor condition, and thermostat calibration.
heatingtroubleshootingrepair
8 Answers
45
✓ Accepted Answer
The recommendation should be tied to measurements, not just the age of the equipment. Age matters, but it is not a diagnosis on its own. For a furnace that is short cycling every few minutes, the first things I would ask for are static pressure, filter restriction, flame sensor condition, and thermostat calibration. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Ottawa, Ontario, pricing can move around, but the diagnostic process should still be clear.
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Before signing anything, I would ask the technician to show the readings and explain which number actually supports the recommendation. For a furnace that is short cycling every few minutes, the first things I would ask for are static pressure, filter restriction, flame sensor condition, and thermostat calibration. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Ottawa, Ontario, pricing can move around, but the diagnostic process should still be clear.
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If you can, ask whether they checked airflow before recommending equipment. We nearly replaced a system when the bigger issue was elsewhere. We had a related issue with our furnace in Ottawa. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Hannah Patel·4/3/2026
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If you can, ask whether they checked airflow before recommending equipment. We nearly replaced a system when the bigger issue was elsewhere. We had a related issue with our furnace in Ottawa. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Logan Kelly·4/4/2026
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The price range alone does not tell you enough. Ask what was tested, what failed, and which assumptions are built into the quote. For a furnace that is short cycling every few minutes, the first things I would ask for are static pressure, filter restriction, flame sensor condition, and thermostat calibration. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Ottawa, Ontario, pricing can move around, but the diagnostic process should still be clear.
12
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If you can, ask whether they checked airflow before recommending equipment. We nearly replaced a system when the bigger issue was elsewhere. We had a related issue with our furnace in Ottawa. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Amelia Mitchell·4/4/2026
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We had something similar and the turning point was asking each company for the actual readings in writing instead of a verbal explanation. We had a related issue with our furnace in Ottawa. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Henry Murphy·4/3/2026
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I would compare how clearly each contractor explains the diagnosis, not just the price. The clearer company ended up being the better hire for us. We had a related issue with our furnace in Ottawa. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Leo Miller·4/3/2026