The other night my husband had turned the heat way up because he was cold. I turned it down because it was too hot. Ever since then I turn the thermostat up and select it to heat to 75 , but all the vents blow is cool air and the thermostat stays at 67 or 68 degrees. It is a programmable thermostat, but I have reset the programs all for 75 degrees, but it never gets past 68. What could be the problem??

First question is the furnace heating at all or just blowing air around?
Type of furnace? Gas,oil,electric,heat pump?

It could be the heat sequencer or the heat strips. As we had this problem as part of our difficulty too...

This question is 4 months old. I hope they have there heat fixed by now.

You've been slightly AWOL. Some of us were getting concerned. A search party was forming.:rolleyes:

Too much is going as usual but it got a bit out of control. LOL