I currently have two thermostats on the first floor of my house(two upstairs also) but, I'm concerned with the gorund level. One stat for heat(OIL), the other for A/C. FYI, the house came this way, this is not something I did. So, I would like to automate my house and was thinking of having this stat(LINK) installed. The only thing that concerns me is that this stat calls for a "power(common) wire I believe and I am unsure if I have one between the two stats. So, my question is two fold. 1st., do most house have this needed wire? 2nd., how and who can I call to install this? 3rd. is there a way to find a local contractor via this site that can install the stat. THANKS!