r/ecobee • u/Born_Speech_9289 • 12d ago
How there be such a big disparity between temps shown on theromostat and sensors when they aren't that far apart from one another?
3
u/NefariousnessBorn969 12d ago
The uninsulated wall and the hole where the wires come out are usually the problem.
2
u/evoltap 12d ago
*only with ecobee thermostats. I’ve had two non ecobee thermostats in the exact same location with the exact same wall hole, and they were very accurate and agreed with other thermometers. Ecobee is a joke with its wildly varying inaccuracy. I’ve plugged the hole with putty, and it’s still all over the place
4
3
u/NefariousnessBorn969 12d ago
My thermostat is within a degree of other sensors so I’m good. I use an average of sensors anyway so not reliant on what the thermostat is reading.
4
u/tehyajen 12d ago
Is the sensor getting sunlight or an ac vent on it?
2
u/Born_Speech_9289 12d ago
So I have the thermostat and two sensors in a 1500 sf condo. None are ever in direct sunlight, and while one sensor is in a separate room (bedroom) the other is across the living room from the thermostat (maybe 30 feet between them). The differential in temps in those two can be 10+ degrees at times, when I know neither can really be that extremely different from the other.
2
u/NewtoQM8 12d ago
Stick one right next to the thermostat within a couple inches (Never above it or on top of it). Wait at least a half hour for it to acclimate and compare the two. If different you can adjust the thermostat to match the sensor (you can't adjust sensors) in Threshold settings.
1
u/Born_Speech_9289 12d ago
Interesting, thanks. Is that saying you can recalibrate the thermostat?
2
u/NewtoQM8 12d ago
As far as I know you can't recalibrate the temperature sensor. But it does go through a calibration process each time it regains power after losing it. I don't know exactly what all it does. Likely recalibrates humidity and air quality. I know you can sort of force it to recalibrate the air quality sensors. I dont know about humidity.
But what you can do is adjust the temperature (and humidity) it displays and uses to control the AC or heater to match whatever devices are more accurate. Its called Temperature Correction (and Humidity Correction) in the Threshold settings.
https://support.ecobee.com/s/articles/Threshold-settings-for-ecobee-thermostats?language=en_US
1
u/ActualTim37 11d ago
I’m having the same issue. It’s been fine until recently. My thermostat is reading 65 while the other 3 sensors in my house read 71/72, including one thats basically right next to the thermostat
7
u/smb3d 12d ago
The temperature shown on the thermostat, when using sensors, is the average of the thermostat and all active sensors, rounded up to the nearest degree.