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How to Install a Smart Thermostat | Ask This Old House



Plumbing and heating expert Richard Trethewey shows a homeowner how to install and operate an energy-saving smart thermostat. (See below for a shopping list, tools, and steps.)

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Shopping List for How to Install a Smart Thermostat:
– Smart thermostat [https://amzn.to/2Sd2bAZ]

Tools List for How to Install a Smart Thermostat:
– Screwdriver [https://amzn.to/2XMTy1k]

Steps for How to Install a Smart Thermostat:
1. Turn off the service switch on the side of the furnace.
2. Remove the faceplate from the existing thermostat.
3. Take a digital photograph of the wire connections.
4. Use a screwdriver to loosen the screw terminals on the thermostat’s base plate.
5. Pull the end of each wire out of the terminal.
6. Unscrew and remove the base plate from the wall.
7. Screw the base plate of the new smart thermostat to the wall. Be sure the base plate is level.
8. Connect each wire to the appropriate terminal on the base plate. If necessary, refer to the photograph taken in Step 3.
9. Snap the smart thermostat onto the base plate.
10. Turn on the service switch at the furnace.
11. At the thermostat, follow the touch-screen prompts to choose the preferred language and internet setting, which allows you to control the thermostat remotely from a tablet or smart phone.
12. Next, enter the year when house was last remodeled, then select a name for the thermostat.[
13. Select the lowest and highest room temperatures for when you’re not at home.
14. Adjust the thermostat setting each time you leave for work and return home. After a few days, the thermostat will learn your habits and automatically adjust the heat.

Richard installed the Nest thermostat [https://bit.ly/35bCqcy], which is available at home centers and electronics stores.

He also demonstrated the Nest app, which is available on select smart phone and tablet platforms.

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we’re ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O’Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Install a Smart Thermostat | Ask This Old House
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20 comments

  1. Nice! now I just need to fine a home with more then 2 wires for the thermostat

  2. I got a smart thermostat, Trane XL 950. But now it has never been updated. When I purchased it, the instructions said it could be updated on line. but no more. Now they want you to call a local Trane dealer and have him update it. All it takes is an SD card. The dealer downloads the program on the card and comes and puts it in the thermostat, Thats it. But I can't do that. Help

  3. they need to not do videos with homeowners anymore, its so cringe to see her just awkwardly saying yup ok hmm yup over and over again , shut up or dont have anyone else with you

  4. you shouldn't be turning your heat down just for an 8 hour absence while you go to work. It takes more energy to heat a home from 55 to 70 than to just maintain it at 70 for 8 hours.

  5. Please fix the [CC] to English, not Dutch…

  6. It’s incredibly crusting frustrating that this guy literally knows how to do everything in a house and I have trouble installing a toilet paper holder.

  7. Great video. I only had one question. I wish he broke out a multi meter to test the voltage for the common wire. Newer Nests require a C wire aka common wire. Old homes may not have that. Thank you. Great video all the same. Now get the paint. lol.

  8. they need to finish the drywall repair

  9. “You have better fingers for that then i do for that”

    2011 – Normal Compliment

    2022 – Lose Job, Lawsuit and Jail Time

  10. Do you have paint? Yes. But do you have 5-minute drywall mud and sandpaper?

  11. Was actually kind of hoping it shock the crap out of her for not testing to ensure the power was off.

  12. This this old house still coming in clutch!! I remember watching this with my parents when was a kid now at 32 its just me.

  13. She needs to shut her yap

  14. I never walked by my thermostat

  15. Nest stats suck in my opinion…they steal power and are unreliable, just saying. Most you need a common wire for too which most homeowners don’t have in their old homes.

  16. The fact that y’all promote Nest is doing folks dirty.

  17. I cut off power to entire circuit breaker and my thermostat was still on! Any advice for the problem?

  18. Never trust a flip of a switch to ensure power is off. Do a meter test at least.

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