How to Replace an Old Thermostat — by Home Repair Tutor



hi I'm Jeff Patterson with home repair tutor in in today's video I'm gonna show you how to replace an old thermostat maybe you've got one that's ancient and just needs to be replaced or you've got a newer one that went kaput like the one I've got here it's a digital thermostat and it no longer works after 10 years which is a bummer but the good news is it's super easy to replace an old thermostat at night that's not working anymore so let's get to it of course before you do anything turn the power off to your heating and cooling system here's what old thermostat it turned off because it was hardwired and I'm gonna wire up a new Honeywell thermostat it's RT HL 2310 and real simple all you have to do is tilt the old throw step forward and pull off the baseplate typically there are pins a pink connector that holds the thermostat to the base plate along with four clips if you have an old timer start with mercury dispose of it properly take a picture of your existing wiring that's gonna help you wire the new thermostat but also take note of how the wires are wired and you'll want to label them with the appropriate labels as you can see here I labeled the green wire with the G sticker and the rest of the wires I labeled according to the old configuration so that's why the blue wire has a WT sticker on it remove the screws that hold the base plate to the wall and then carefully when I say carefully I mean very carefully hold the wires with one hand and pull the base plate off the wall you don't want the wires to go back behind the wall it's real pain and that's why I put a vice-grip set of pliers on the wires to hold them in place drill holes in the wall that match the base plate and put some blue tape on the wall to catch any of the dust so place the blue inserts into the wall pound them into place whether they're a hammer or the base of your screwdriver like me carefully feed the base plate over the wires and you may have to trim any of the wires coming out of the wall that's what I had to do here and then unscrew the small terminal screw using a precision screwdriver stick the wires into their corresponding slots and then tighten down the terminal remove the vice grip and here you go here's the wiring I put the blue with the blue G with the G yellow with the yellow W with the white and R with red secure the base plate to the wall remove your blue tape with all the dust on it I just simply did that over the old or the thermostat box that came with the Honeywell thermostat put the batteries in remove the sticker and then make sure that this switch is set to either gas or oil or electric I have an electric furnace force our heat press the thermostat down onto the tabs and you're almost done you have to set the time for all programmable thermostats set the time hit the Run button and you're good to go now the last thing you need to do is set at the heat offer cool and then set the fan to either auto or off well there you go that's how you replace an old thermostat but not that's not working anymore and remember if you liked this video give it a thumbs up over on YouTube so that other people can see it and benefit from all the different tips you can also click the subscribe button if you like the my videos maybe you've got a new house or an old house that's new to you and it needs a lot of work to it I think that you'll like my videos because they share a ton of awesome tips alright thanks for joining me today I've really appreciate appreciate your time I'll see you in the next video take care you

35 Comments

  • Nathan Warren

    April 15, 2019

    I wish all DIY videos were done this concisely, thanks bro!

    Reply
  • Rita

    April 15, 2019

    Will a thermostat cause your AC not to cut on

    Reply
  • Ahmad Abdul-Quadir

    April 15, 2019

    How did you know that B goes with Blue? In the original thermostat it was linked to W2… Of course there is no W2 in the replacement thermostat.

    Reply
  • Xian Li

    April 15, 2019

    Do we have to turn offf the electrival because a heat guy who came to help me in 2011 didnt

    Reply
  • Harsha Vardhaan

    April 15, 2019

    thank you this video helped me very well

    Reply
  • Arnoldo Monterroso

    April 15, 2019

    Thank u very much nice video

    Reply
  • Majestic Multiples

    April 15, 2019

    This video was excellent and very clever! Thank you!

    Reply
  • Phu Dinh

    April 15, 2019

    When you connect the red wire, do you connect it to only the R terminal or you also connect the R and RC from the red wire?

    Reply
  • William Nisperos

    April 15, 2019

    Thanks for the information. It's easy to follow. . .

    Reply
  • RYAN SEACREST

    April 15, 2019

    step 1 unplug the furnace or heatpump. step 2 take a picture and write down colors of wire and letters of the connections. step 3 replace t stat double check ure conections and then plug furnace or heatpump back in. cheers. job well done

    Reply
  • Julia Dominici

    April 15, 2019

    He forgot to turn the power back on!

    Reply
  • Angela Clark

    April 15, 2019

    How would you know if your thermostat needs to be replaced and not your baseboard heaters?

    Reply
  • nvsbl2

    April 15, 2019

    Hopefully there's a vid for NON digital thermostats

    Reply
  • Susana Durocher

    April 15, 2019

    Replaced old thermostat, gemtech….it had a red jumper wire on two R's (no red wire from wall). This thermostat comes with a wire over the two R's. I did not put the red one I have. The unit turns on only when placed on heater and I'm left holding a red jumper wire?? :/

    Reply
  • gene mace

    April 15, 2019

    Yes. A Sensi WiFi thermostat. I needed to install a dedicated c wire because my old thermostat was a four wire . Your instructions made it really easy. Thanks again

    Reply
  • gene mace

    April 15, 2019

    Thank you. This video was perfect and answered all my questions. Next stop Home Depot to get a Honeywell. Keep up the good work. Thanks again

    Reply
  • Al L

    April 15, 2019

    Good observation & question presented by Kilroy below which I noticed & questioned to myself as well. Intuitively, the color coding of the wiring should match the terminal color designations. Why the discrepancy? Otherwise an excellent video. Do you have an answer to this?

    Reply
  • ramon villasana

    April 15, 2019

    hey thx bro

    Reply
  • Tiffany Nichols

    April 15, 2019

    This was very helpful for us single, independent ladies. Your instructions were very clear. Thank you.

    Reply
  • Jose Ruiz

    April 15, 2019

    Great video very user friendly And you have a good soothing voice!

    Reply
  • Arod 305!

    April 15, 2019

    Thanks for the tips. Btw, you look like a brunette Dexter.

    Reply
  • K. Dailey

    April 15, 2019

    This was great and quick!!! He's very self explanatory!!

    Reply
  • ايمن ابن الكراويه Adam

    April 15, 2019

    So sweet to the point. You are the best.

    Reply
  • Hungryman97's Collectibles

    April 15, 2019

    Thank you, Freddy Mercury.

    Reply
  • Marom2759 Maro62626262

    April 15, 2019

    Love this thing>>>t.co/AQGT74Oith  Certainly a luxury item but having remote control from my iPhone and voice control via Amazon Echo is lazy and convenient. After owning a button programmable thermostat that required many steps and then repeat that for each day, the browser or mobile app based programming interface for this new Honeywell is very intuitive.

    Reply
  • Jeff York

    April 15, 2019

    I'm completely and totally devoid of handyman skills but this looks like something I can do.  In any case, I'm going to find out.  Thanks for the video.  It mentioned a number of tips that I probably won't find in the instructions that come with a new thermostat.

    Reply
  • M.R. Howard

    April 15, 2019

    Thank you so much for this very informational tutorial! I was so afraid that I would mess up and your video was the first one I watched! I became so confident immediately! Thank you!!!! ?? new supporter!!!!

    Reply
  • Tammy Creo

    April 15, 2019

    Thank you for your help. I changed myself my thermostat!!

    Reply
  • Dog LoungeTV

    April 15, 2019

    Great video thanks!

    Reply
  • Profut Shakur

    April 15, 2019

    I almost never comment on videos but I must thank you for this really easy video.

    Reply
  • 804186443

    April 15, 2019

    My wire wire isn't even embedded to the old thermostat. That's what's confusing me. Do i put the yellow wire on the y for the new thermostat

    Reply
  • Phenom Menon

    April 15, 2019

    I wish a video existed of at least ONE install that didn't include all the wires and how they upgraded. All these installs magically have the most up to date wiring for their thermostat (which barely requires a video to show you how to install at that point).

    Reply
  • JKUBTV

    April 15, 2019

    my thermostat won't change temp. I cannot increase or decrease the temperature and it's stuck in on 68, Is it broken?

    Reply
  • benjaminjeffery1976

    April 15, 2019

    My furnace comes on for a couple of minutes and then goes off. And then a couple of minutes later, it comes back on. Do you think it could be the old thermostat? I have the OLD one.

    Reply
  • Bud Black

    April 15, 2019

    Wait but how do I install the batteries?

    Reply

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