topic Re: Temperature Differences in Home Automation

Temperature Differences

Jhy310 — Wed, 12 Nov 2025 02:26:09 GMT

Just got the updated Nest and have been having so much trouble getting it to heat! I am confused about the temperature which says 70 and the “inside temperature “ says 64. My house is cold. I never had this problem with the old one.

Any help would be appreciated.

Peggy

Re: Temperature Differences

kcruzgonzalez — Sat, 15 Nov 2025 22:30:45 GMT

Hello @Jhy310,

Thank you for posting in the community. I understand you recently installed an updated Nest Thermostat and are having trouble getting your house to heat and that you've seen a temperature difference where the thermostat is set to 70 degrees, but the "inside temperature" displayed says 64 degrees. I am here to help you get your heating working correctly and consistently.

To properly diagnose this and understand why your thermostat is showing two different temperature readings, I need to gather some specific details about your device and setup:

What specific Nest Thermostat model did you install?
Where are you seeing the two different temperatures?
- Is the 70 the target temperature and the 64 the actual room temperature shown on the thermostat's main screen?
- Or is the 64 reading coming from a separate device, like a Nest Temperature Sensor, or a different spot in the Google Home app?
When the thermostat is set to 70, what color is the ring or display?
- Red/Orange: Indicates it is actively calling for heat.
- Grey/Black: Indicates it is idle and not calling for heat.
What type of heating system do you have? (e.g., forced air/furnace, boiler/radiators, heat pump, etc.)
Did you experience any issues with the wiring during the installation of the new Nest Thermostat?

Once I know which model you have and where these temperatures are displayed, we can move forward with checking your wiring configuration and system settings to get your heat running.

Regards,

Kevin

Re: Temperature Differences

Finn80 — Fri, 28 Nov 2025 14:46:51 GMT

That's a common frustration with the updated Nest. The key is that the main display shows your target temperature (70°), while the "inside temperature" is what the sensor is actually reading (64°). This discrepancy often points to a placement issue. Is your thermostat on an interior wall away from drafts, direct sunlight, or heat sources like electronics? A cold exterior wall or a sunbeam from a window can trick the sensor. For homes with significant drafts from windows, improving insulation can help stabilize the ambient temperature. A solution like a window film from window tint can reduce cold spots near the thermostat, ensuring it reads the room's true temperature.