The Nest Smart Learning Thermostat 3rd Generation Review

Nest Smart Thermostat Review

Installation of the Nest Smart Home Thermostat

The very first step with replacing your home thermostat is turning your A/C and Heating systems completely off. You never want to work with wiring with the power still on, even if it is low voltage wiring like most home thermostats are. Locate your main breaker box, this could be outside of your home, in a basement or in a garage space. Find your system and flip the breaker to the off position.

Nest Thermostat 3rd Gen - Breaker Panel
Nest Thermostat 3rd Gen – Breaker Panel

Next, you need to remove the cover plate on your existing thermostat and mark the wires found. Your existing thermostat should have markings of what the wires are and you can use the provided wire identifying stickers on the wires as you remove them from your old thermostat. This will make it easier when you begin installing your new Nest Learning Thermostat. I also took a quick picture of the wiring with my phone as a backup method just in case the stickers came off of the wires during removal of the old thermostat and installation of the new thermostat.

Nest Thermostat 3rd Gen - Existing Thermostat Removal
Nest Thermostat 3rd Gen – Existing Thermostat Removal

With the wires now marked and the old thermostat removed from the wall, you will probably notice either an unpainted surface or a painted surface that’s perhaps a different color than your existing paint. In either case, you’ll definitely have holes where the old thermostat was mounted similar to what’s pictured below. You have two options; paint and patch the holes then you can install the Nest Thermostat without the white cover plate OR skip the painting and patching of holes completely and install the white cover plate. I went with the paint and patch route. Sure it takes a bit more time, but I feel you get a much better look without the cover plate installed. It took me about 20 minutes total to patch and paint (drying the paint with a blow dryer), not bad at all.

Nest Thermostat 3rd Gen - Existing Wires Marked
Nest Thermostat 3rd Gen – Existing Wires Marked

With your surface now painted and patched, you are ready to install the back mount to the wall. You’ll need to feed the wires through the center of the plate and then install the two provided screws, which can go into the sheet-rock without issues with the screw driver provided. I would not recommend a drill here or it could strip out the hole in the sheet-rock and make it difficult to secure the mount. While installing the screws, keep an eye on the level to ensure its level during installation.

Nest Thermostat 3rd Gen - Back Mount Installed
Nest Thermostat 3rd Gen – Back Mount Installed

Once its secured to the wall, you can begin inserting the wires to match up where they should go. The wires slide into a hole and the button click down once they are secured. I found this process VERY easy and incredibly quick. Once you have them all in place, push as much wire as you can back into the hole in the wall and also flatten them down within the insert of the plastic mount. This will ensure an ease installation of the thermostat front or display.

Nest Thermostat 3rd Gen - Wires In Place
Nest Thermostat 3rd Gen – Wires In Place

Lastly, snap the front display onto the mount which you just installed on the wall, and that’s it! Flip the power back on at the breaker box and your thermostat should then come to life! In all, even with the painting and patching I think it only took about 40 minutes total from start to finish.

Nest Thermostat 3rd Gen - Installation Complete
Nest Thermostat 3rd Gen – Installation Complete

Read on to the next page and we’ll show you the configuration/setup of the Nest Thermostat along with usability of it as well!

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About The Author

James Anderson

James is the owner and editor-in-chief of Geek Inspector. He enjoys technology, motorcycles, traveling, and spending time with his family.

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