Heating Repair
Anyone dealt with a furnace short cycling every few minutes in Ottawa?
Asked by Evelyn Pricein Ottawa, Ontario· 4/14/2026· 1998 views
I'm in Ottawa, Ontario and dealing with a 6-year-old furnace in our two-storey home. Over the past two weeks, it has been short cycling every few minutes and we're now noticing the upstairs stays noticeably worse than the main floor.
One contractor quoted C$969 for repair, while another jumped straight to a C$18,237 replacement because of the age. The weather here has been dealing us cold snaps followed by mild afternoons, 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
10 Answers
32
0
If this landed on my schedule, I would want to document the core readings first and then explain exactly why the repair does or does not make economic sense. 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.
31
0
From a contractor side, I would not approve a major repair or replacement without test results that line up with the symptoms. 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.
27
0
If this landed on my schedule, I would want to document the core readings first and then explain exactly why the repair does or does not make economic sense. 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.
23
0
From a contractor side, I would not approve a major repair or replacement without test results that line up with the symptoms. 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.
23
0
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.
23
0
From a contractor side, I would not approve a major repair or replacement without test results that line up with the symptoms. 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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What helped us most was breaking the quote into labour, parts, warranty, and optional upgrades. The expensive bid looked very different once it was itemized. 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.
Claire Walker·4/14/2026
11
0
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.
Grace Foster·4/15/2026
10
0
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.
Nadia Diaz·4/15/2026
5
0
What helped us most was breaking the quote into labour, parts, warranty, and optional upgrades. The expensive bid looked very different once it was itemized. 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.
Ruby Nguyen·4/14/2026