topic Re: Heating issues in Nest Thermostats

Heating issues

RacheleH — Tue, 25 Mar 2025 15:17:48 GMT

For the last 4 days, my heat has stayed on but is not heating the house. Right now the thermostat says my house if 61°F and I normally keep my house at 65 in the winter. It is not reaching temperature.

I just had my HVAC tune-up in Feb, and confitmed all systems were working properly and I have enough frion.

I reset the thermostat and it did not help. Then I reset the circuit breakers and when the system turned back on, the thermostat said my house was at 71°F, then it quickly fell to 60°F within 15mins or so, and heat kicked on, but again my house did not get warmer and the system stayed on for hours before I turned it off.

I completely factory reset the thermostat and programmed all settings again, removed and re-added device to my Nest app. This did not help.

There is power to the thermostat, as I checked those settings as well. The last software update says March. I hope a software update did not mess up my system.

All wiring looks fine and not corroded or broken. Air is blowing through vents. I have forced air and only the single thermostat.

This was installed before I bought the house, so the Nest is at least 7years old. My HVAC system is 4 years old. The thermostat is adequately placed in the upstairs hallway.

Re: Heating issues

RacheleH — Tue, 25 Mar 2025 15:36:55 GMT

Also, my heat pump setting is set to each cycle as suggested in the online troubleshooting guide.

Re: Heating issues

luciaaa — Fri, 28 Mar 2025 20:22:34 GMT

Hi, @RacheleH!

Thank you for posting in the community. I'm sorry to hear your heating system isn't working. I appreciate the detailed information and the troubleshooting steps you've already taken so far. I'd be glad to assist you.

To troubleshoot effectively, please answer the following questions:

What is the thermostat model you have? Here’s a helpful article about how to identify your thermostat model.
Have you experienced extremely cold weather lately?
Is it displaying any error code?
Are the fan and AC running properly?
Do you have a heating schedule set?

Additionally, please provide the following information:

A picture of the current wiring configuration on your Nest Thermostat.
A picture of the configuration on the Nest or Google Home app.

This information will help to determine the best next troubleshooting steps.

Please keep me posted.

Best regards.

Ana