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Heating

Circuit breaker trips as soon as I turn on heat/AC using thermostat

Anonymous user 20/03/2026 - 9:24 AM

Hi, I have two thermostats in my condo unit. The 1st issue is with one thermostat that trips the circuit breaker in the electrical panel as soon as I turn on the heat or AC using the thermostat. The 2nd thermostat, I can turn on the heat/AC and it will heat/cool if I keep it at slightly higher/lower than current room temp. If I change temp to anything, say 2 or 3 degrees higher/lower than current room temp, then the circuit breaker will trip. Any ideas where the main issue lies? The vents and filters of the HVAC unit are changed regularly. Is the issue with the thermostat, i.e. I need a new wall unit? Is it the circuit breaker? Is the hvac unit? This is a 10 year old condo. Thanks for pointing me in the right direction.

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1 Answer

Satrack Electric

Rating: 5 out of 5

Belleville, Ontario

This isn’t a thermostat problem—you’re almost certainly dealing with an electrical or HVAC fault, and the breaker is doing its job protecting the circuit.

Answered20 March 2026