I also wanted to add that the repair guy came said could not fix and needed a new compressor and wanted to charge $2480.00 to fix it. My husband said it was
Still giving hot and cold air but was not shutting off or an when you would switch it to that
How can it be the compressor if the thermostat seemed to be screwed up.
Like I said I replaced the thermostat but now instead of giving cold air it is hot now.

What kind of system do you have? Heat pump, or straight A/C?

It's central air and heat gas

At that price you are getting closer to a new unit.