When my furnace is on, there is cold air coming out of two large vents in my house while warm air is coming out of all the other heating vents. Is it possible that the heating and air conditioning are on simultaneously? My thermostat allows only for EITHER heat OR cooling. You can't turn on both at the same time. What is going on? By the way, I had the furnace cleaned about 6 weeks ago.
- posted
19 years ago