We installed a new thermosat for our electric furnace "york" about 25 years old. When we started it to heat the house it only blew cold air; looked at wiring tired it again still coldair. Put the old thermosat back on and the furnace is only blowing "cold air". Is it possible we "blew"something putting in the newer thermosat?:confused:
If so how do we fix it without having to shell out a few hundred dollars; which at this time would be hard to do.

Any help appreciated. :o

MR
MO

Did you follow ALL the installation instructions for the new t-stat (not just the wiring, but the setup as well)? If the old t-stat does not restore function, chances are something has failed as a result of improper wiring or setup of the new t-stat. How many/what color wires are present?