Woke up this morning to a cold house and found out that my heater was not working. I believe I have a Trane gas furnace and nothing is kicking on. Usually there is like a 15-20sec delay before the air handler starts. It was working fine last night? The programmable thermostat still thinks it is working as well, no errors? Any tips would be greatly appreciated. Thanks

When is the last time you changed the filter? Clogged filters can cause this.

I change every 3 months and they are due; would there be a reset button when I do change the filters; I appreciate any comments you may have.