I have had Nest thermostat in use for about 3 years now, and it has been working well.
The issue has been weird like this:
Day 1: around 8 PM, we felt cold and cranked up the temparature, the thermostats turned orange, called for heat, the fan turned on, but the blowing air was not warm. The following morning, I changed the air filter and tested the heating. Warm air was blowing and I figured the issue was fixed with the change of air filter.
Day 2: the same evening, I cranked the thermostat on and surprised to abserve that the air was not warm. At this time, I figured something with the furnace not working properly. The following morning, the furnace turned on and warm air was blowing.
At this time, I feel that the Nest thermostat is doing something weird. Anyone has encountered similar situation?
