I am looking at a new thermostat for this carrier fy4anf042 and the original therm is a luxpro psp511la. I am looking at getting a new honeywell to replace it and my choices are, the rth8500 or th8320ou.... Is there any other model I should look at close or a preference for either one? Not sure which one will work on my application either... any help would be appreciated. Thank you.
Michael
Michael