topic Re: Nest 4th Gen cooling past my set temperature in Nest Thermostats

Nest 4th Gen cooling past my set temperature

CMS062407 — Mon, 07 Jul 2025 19:31:14 GMT

Hello,

I have a nest 4th gen thermostat and it keeps on cooling past my set limit and it’s making my electricity bill skyrocket! I’ve owned ever generation of nest thermostats and I’ve never had this issue…please help.

Re: Nest 4th Gen cooling past my set temperature

EduardoN — Mon, 14 Jul 2025 12:46:24 GMT

Hi @CMS062407,

Thank you for reaching out to the community! I understand that your Nest Learning Thermostat (4th gen) is cooling past your set limit, which is causing your electricity bill to be very high. That's definitely not the experience we want you to have, especially as a long-time Nest user. No worries, I'm here to help you!

To provide you the most accurate troubleshooting steps, I'd like to ask you some questions:

When did the issue start?
Are there any error messages? If so, what are they exactly?
What wires do you have on your thermostat?
When was the last maintenance check for your HVAC system?
Has there been any recent changes or upgrades to your HVAC system?

I'd like to share some troubleshooting steps that might help you.

Check Home & Away Routines: Open the Google Home app > tap Tap Automations > Home or Away > select the thermostat action > tap Remove action > Save.
Check Auto-Schedule: Open the Home app > press the name of the Nest thermostat > tap Temperature preferences > under Nest Sense, tap Smart Schedule.
Remove Schuedules: Open the Google Home app > Select your thermostat > Tap Schedules > Tap the day of the week that has the temperature you'd like to remove > Select the temperature you want to remove > Tap the trash icon. The temperature will be removed from the schedule for that day.

Please feel free to share any additional details you think might be relevant.

Best regards,
Eduardo

Re: Nest 4th Gen cooling past my set temperature

Kfergus999 — Thu, 10 Jul 2025 17:00:58 GMT

My 2nd Gen Learning most always cool to 1 degree below setting, or 1/2 degree, and does not engage again until 1 degree warmer, maybe 1-1/2 degree warmer.

This range is likely affecting the bill little. Temps are higher these days.

Re: Nest 4th Gen cooling past my set temperature

EduardoN — Tue, 15 Jul 2025 18:17:33 GMT

Hi @Kfergus999,

Thanks for sharing this information about your Nest Learning Thermostat (2nd gen.)! You're right, a 1-degree swing (or even 1.5 degrees) is pretty normal for thermostats as they cycle on and off to maintain comfort. While there might be a tiny effect on your energy bill, this kind of operation usually doesn't lead to a major increase. Especially with today's higher temperatures, it's just working to keep your home comfortable.

Keep me posted.

Best regards,
Eduardo