I have a newer furnace (about 18 months old) in a new home (just as old). I noticed the other day that I heard the furnace exhaust fan go, followed by the gas starting to burn. A few minutes went by and the blower never kicked in. After a few minutes, I checked the thermostat. It read "Heat On", but it wasn't blowing any air. At this point, the gas had to be burning for 5 minutes. I turned it to "Off" and then back to "Auto". It then went through the same routine.... exhaust on, gas on and finally followed by the blower. I thought it was weird and figured I would keep my eye on it.
Today, I notice it was a bit cold in the house, but didn't think anything of it. I got up and heard the gas running again, but noticed that the furnace wasn't blowing. I checked the thermostat again. This time, the thermostat was set to 70 degrees, but was currently 68 degrees and read "Heat On" again. Again, I switched it to "Off" and back to "Auto" again and it everything kicked in as expected.
I, by no means, am an HVAC expert. I am obviously going to call the HVAC company in tomorrow (too late tonight) to have them take a look at it. I was just hoping that I could get a heads up to what might be the problem so that I'm not taken tomorrow.
Any thoughts?