We just had a complete new Carrier system installed. Top of the line
high efficiency gas furnace (96%) and central air condenser (18 SEER).
The thermostat is an Infinity Control model which is supposed to
eliminate the hot/cold syndrome of forced hot air heat.

Well, it sure as hell hasn't done that. This unit doesn't recognize a
change in the room temperature until it's changed by at least three
degrees. That means it gets very cold before the furnace kicks on. It
stays on for a long time - sometimes twenty minutes or more, then goes
off for as long as an hour. It's four degrees outside right now and
the furnace came on once in the past hour. When it does go on and off
it "thinks" that the inside temp has changed by one degree when in fact
the swing is about five degrees.

The guy who installed it agrees there is a big problem but he is having
trouble convincing Carrier.

Does anyone else have a similar problem with this new model? It's very
frustrating considering the little sucker cost about $400.

Thanks

Jane