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How to install your Amazon Smart Thermostat

Helpful Home Staff by Helpful Home Staff
November 4, 2021
Reading Time: 13 mins read
Amazon Smart Thermostat

The Amazon Smart Thermostat is the first officially Amazon-branded thermostat. You can install Amazon Smart Thermostat on your own by following the step-by-step instructions below. If you need any help, you can contact Amazon’s 24/7 customer service via phone, chat, or email. If you prefer, you can also hire Amazon Home Services or a local HVAC tech to do the installation instead.

Related: Amazon Smart Thermostat Review: Just the basics for just $60

How to install your Amazon Smart Thermostat

Time needed: 1 hour.

Installation takes about 1 hour for most customers. The following tools will help with the installation:
– A drill with a 3/16-inch drill bit
– A pen or pencil
– A level

  1. Turn off the power to your thermostat

    Go to your electrical fuse box and switch your HVAC fuse to “off”.

    How to turn on your HVAC system

  2. Remove your old thermostat’s faceplate

    Remove your old thermostat

  3. Check your old thermostat for high voltage wiring

    The Amazon Smart Thermostat is only compatible with 24V (low-voltage) systems and not with high voltage systems (110V/220V). If you haven’t yet checked for compatibility, you can do so here: Amazon Smart Thermostat Compatibility.

    Check for high voltage

  4. Take a photo of your old thermostat’s wiring

    It’s important to have a photo of your old wiring, just in case you need to return the wiring to the way it was before.

  5. Check if you have a C (Common) wire

    If you have a wire labeled “C”, proceed to step 8. If not, proceed to step 6.

  6. Check for an extra unused wire at the thermostat installation location (conditional)

    If there’s an unused wire behind the wall, you may be able to use it as your “C” (Common) wire. If you have an extra wire, proceed to step 7. If not, you’ll need to install the optional C wire power adapter.

    Themrostat extra wire

  7. Check for an extra unused wire at your furnace control board (conditional)

    Open your furnace panel and check for the same extra wire found at the thermostat installation location. If it’s connected to the “C” or “Common” terminal, close your furnace, and proceed to step 8. If it’s not connected, then proceed with connecting the wire to the “C” or Common terminal, then close your furnace, and proceed to step 8.

    Furnace C wire

    Furnace C wire

  8. Remove one wire at a time and label each with the stickers included in the Amazon Smart Thermostat packaging

    You may need to unscrew or unclip each wire. Make sure you also label the “C” (Common) wire, if you have one.

    Label each wire

  9. Remove your old thermostat’s wall plate

    Remove old thermostat's faceplate

  10. Place the Amazon Smart Thermostat wall plate on the wall

    – Pull the thermostat wires through the middle of the plate.
    – Use the level to make sure it’s straight.

    Level the faceplate

  11. Use a pen or pencil to mark the location of the holes in the wall plate.

    Mark wall plate drill holes

  12. With a 3/16″ bit, drill into the wall on the spots you marked.

    Drill holes for the wall plate

  13. Press the plasterboard anchors into the holes.

    Place anchors in holes

  14. Install trim plate (optional)

    If you need to cover a larger area to cover the holes from your old thermostat or different color paint, you can use the new trim plate that came with your Amazon Smart Thermostat.

    Amazon Smart Thermostat trim plate

    Amazon Smart Thermostat trim plate

  15. Attach the Amazon Smart Thermostat wall plate on the wall

    Secure the wall plate with the screws included in the package

    Attache the wall plate

  16. Connect your thermostat wires

    Connect each labeled wire from your wall to the matching slot in your wall plate. Make sure your wires are connected by gently tugging each one after you connect it.

    Attach thermostat wires

  17. Close the wire cover on your wall plate

    Close te wire cover

  18. Attach the Amazon Smart Thermostat faceplate to the wall plate

    Align the faceplate with the wall plate and press gently until you hear it click into place.

    Attache the Amazon Smart Themrostat to the wall plate

  19. Turn the power back on at the fuse box

    How to turn on your HVAC system

  20. Check the thermostat’s display

    If the thermostat display reads “SEt” or shows the temperature, then proceed to step 22. If not, proceed to step 21.

    Amazon Smart Themrostat powered on

  21. Remove the Amazon Smart Thermostat faceplate from the wall (conditional)

    If nothing is displayed on the thermostat screen after attaching it to the wall, then some wiring may have come loose during the installation. Take the following steps:
    – Make sure all the wires are connected to the wall plate correctly.
    – Make sure the power to your thermostat is on.

    Once you’ve taken the above steps, attach the Amazon Smart Thermostat faceplate to the wall plate again. If the thermostat still does not display anything, reach out to Amazon customer service for additional support.

  22. Connect your Amazon Smart Thermostat to Alexa

    In the Alexa app, select “More” at the bottom right, then select “Add a Device” at the top left.

    Add device

  23. Scroll down the list and select “thermostat”

    Select thermostat

  24. Select “Amazon” as the thermostat brand

    Amazon thermostat

  25. Select “Yes”, when asked if the Amazon Smart Thermostat has been installed on the wall

    Select Yes

  26. Follow the steps in the Alexa app to set up your new Amazon Smart Thermostat!

Helpful Home Staff

Helpful Home Staff

Learn more about how we test products.

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