Has anyone here ever replaced a thermostat?

[Warpy]

5. I did it a few years ago, only to find out the transformer under the house had fried

I called a poor schmuck in to deal with that since I'm not physically capable these days.

However, the thermostat is easy. It's on a 24 volt circuit, so you don't have to worry about being knocked flat by it, although completing the circuit with a finger will sting. Just unscrew the old one, note how the wires are connected, disconnect it, connect the new one and screw it in. Calibrate it according to the directions on the package if it's a mercury tube job like mine is.

http://home.howstuffworks.com/home-thermostat2.htm

There are instructions on You Tube that will scare you to death because they're all pushing the programmable thermostats, something I'm guessing you don't want any more than I did.

You'll need flat head and Phillips screwdrivers, possibly a drill if the new thermostat screws in differently, and a large vocabulary of foul language.