The blower on the furnace (HEIL SP 80) keeps shutting off and on during the cycle it would be blowing. The normal cycle appears to be working but when the blower turns on it keeps shutting off and on. Does that make sense how I asked the question?

Here's my issue. I cannot turn on either my AC, Furnace, or Blower from the thermostat. However, I can turn on the blower by manually pressing a 'Manual On' button inside the furnace. - AC is powered and was working a couple days ago. - Furnace was also working a couple days ago. - Found...

I have two Lennox furnaces in my home and would like to know if there is a way to shut off the blowers when the furnace is not running. When it is cold outside they blow cold air into the house and this seems to make the house cooler when the furnace is not running. I know they are supposed to...

I've replaced the thermostat but my old one was so dated I couldn't see any significant number settings e.g. anticipator setting. What's that?

Hi I have a TRANE XL80 Furnace. Couple of days ago the furnace “Blower” started to make humming and grinding noise and it wouldn’t turn. I then would give it a push start by turning it by hand, and it would turn for couple of hours and it would do the same thing. An hour ago, it stopped...