A bit of a benign project, but aren't most household jobs?
Anyway, I thought I would share changing an analog thermostat to a digital one.
For some reason, I have to do this every time we move into a new house.
This house being 140 years old, it is understandable that it had a crappy analog thermostat, but our last condo was brand new, and still had one???
The before photo - pretty standard old thermostat. Ours is really not very accurate either. Also, perhaps being a designer has made me nit-picky, but I can't stand the fact that it doesn't line up with the switch plate.
Step 1. Turn off the breaker that goes to the furnace.
Step 2. Remove the cover plate and see what is there.
Step 3. Label the wires. Sometimes the thermostat will say what each of the wires is connected to (RH, W) but this one did not. Having 1 white wire and 1 black wire coming out of the wall, I made the assumption that white should go to white, but just in case, I consulted the internets.
It turns out that white is usually an electricians standard for heat. Yay - my assumptions were correct!
Step 4. Take out the screws to both the thermostat plate to remove it from the wall, and loosen the screws from the wires to remove them.
Step 5. Use the new thermostat plate to mark and drill new holes. Before mounting, pull the wires through the provided hole.
Step 6. Using your labels, or in my case put white to W and black to RH and tighten the screws. Some thermostats will have a lot more wires. This has to do with whether you have air conditioning and whether there is a separate wire for the fan. Obviously, we do not have A/C - Oh, and according to the Farmer's Almanac, it is going to be an especially hot summer this year. Yay......?
Step 7. Put batteries in your new digital thermostat and clip it back onto the mounting plate.
Step 8. Program the thermostat and put the cover back on. Done!
Okay, not really done. I will actually get back in there later patch the holes from the old thermostat, sand it and re-paint it... but that will happen another day. I started this project on a whim at 9pm. Getting late!