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heat won't turn on -

Community Member

i have reset the next thermostat and it still won't work

yesterday all of a sudden the next was on? i didn't touch it to do that. it sounded like just the fan.

I tried to turn the heat on....did not connect

i tried to turn the a/c on same thing.

i need to find out what I can do to have it working again.

wifi is connected and I can use the thermostat manually for settings and reset but nothing else.

need to speak with a live person or at least a chat




Community Specialist
Community Specialist

Hello iralor,


Oh no! I'm sorry to hear you're having issues activating your HVAC system with your Nest Thermostat. I'd be happy to take a look at this for you.

To isolate:


  • What type of Nest Thermostat do you have?
  • Does the thermostat screen indicate that it’s actively calling for heating?
  • What type of furnace do you have? (gas, electric, etc.)
  • When did heating and cooling last work?
  • Did you turn off the power to the HVAC system?
  • Did you recently turn off any breakers?
  • Have you recently experienced a brownout or blackout?
  • Is there a light switch near the heater that controls an outlet?
  • When was the last time you changed the furnace's air filter?
    • Note: A clogged air filter can cause an HVAC system to not activate.


Also, if you prefer to speak to real-time support, Please fill out this form to connect you to your preferred support channel, and let me know if you need more help.


Hey there,

I wanted to follow up and see if you are still in need of any help. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further.




Community Specialist
Community Specialist

Hey iralor,


I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns, as I'll be locking this thread in 24 hours.


I appreciate your help, Mark.