View Full Version : Why does my furnace blows out cold air when it should be blowing out hot air?
njc418
Jan 19, 2008, 07:35 AM
Why does my furnace blows out cold air, when it should be blowing hot air?
hvac1000
Jan 19, 2008, 07:44 AM
Check the thermostat to see if the blower switch is set to on. It should be set to automatic. Does the furnace heat at all ? Try that first and post back.
mari69
Jan 11, 2010, 05:39 AM
Thermostat is set to heat and auto
mari69
Jan 11, 2010, 05:41 AM
The furnace is on heat and auto but isblowing cold air
mari69
Jan 11, 2010, 08:24 AM
It is on heat and auto
hvac1000
Jan 11, 2010, 08:48 AM
Brand of unit?
Exact model number?
BRIANNA4179
Oct 26, 2010, 05:46 AM
Yes but still blowing cold air
andyman1968
Dec 6, 2011, 02:58 AM
It was on run not auto, why does that matter it was on run and it was working before