Thermostat blank or not working
A blank screen, or the system doesn't respond to the thermostat.
What you're probably seeing
A blank screen, or the system doesn't respond to the thermostat.
Likely causes
- Dead batteries.
- A tripped breaker or blown fuse at the system.
- Wiring or a failed thermostat.
Safe checks you can do now
- Replace the batteries.
- Check the furnace switch and breaker.
- Make sure it's set to the right mode.
When to call a pro
It's still blank or the system doesn't respond.
General information about common causes, not a diagnosis of your home.
FAQ
Quick answers
Who fixes thermostat blank or not working?
A heating and cooling company. Call (844) 511-3573 to connect with an independent local heating and cooling company.
How much does it typically cost?
HVAC repair: $150–$450 (HomeGuide 2026 national ranges). Your pro sets the real number after seeing the job.
When should I call?
It's still blank or the system doesn't respond.
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