Nest Wiring Diagram: Full Explanation!

[@DC-iq2kk]

I cannot say hoy much I appreciate this tutorial. I have been listening over a dozen of guys (so much time wasted) but you are the only one that explained what are the wire connections for, and could make the difference between each ones features, so that I know what is suitable for me. It is incredible how everybody speaks about this C wire but none is able to explain what it is as you are. My appreciation from over the ocean!

[@jkyle6465]

Holy cow, thank God you made this video. Old houses and new modifications are a nightmare.

[@mandifalconer3580]

Thank you so much for this video. I bought a Nest thermostat for my house and unfortunately my husband passed unexpectedly before it was installed. After some time I decided I wanted to have the new Nest installed, but folks wanted either a lot of money or they didn't have the time to help me. With your video and wonderful explanation, I was able to install my Nest and have it working all by myself. I got really nervous because all the other videos were talking about 4 wires and when I popped off my old thermostat I had 6 wires. And to add to the confusion, one of them wasn't connected but seemed important (turns out I already had a blue common wire). Thank you!

[@jordanarredondo6361]

I'm so sorry for your loss. 😥

[@TheStefanieperu01]

I'm at this spot now. I have 6 wires :(

[@rickkleiner3365]

Thanks for the video great job I had the job done it 5 min .

[@jackwiley1480]

Standing ovation and a round of applause for this guy! Thank you so much :-)

[@janetlong9510]

OMG you are a life safer with this video and your heat pump info about people in the south. I live in Florida and didn't know I had one and I could only get the heat to blow until I moved orange to the OB slot. Yay, AC finally.

[@rogerjackman2855]

Thank you for the video, I have a question with regards to heat pump wiring I have a W2 and an E along with O/B, R, G, C, and Y The nest only has six connectors Y, C, W, G, R, O/B where do we go from here?

[@johnwest2128]

That O/B wire got me. Thanks for setting me straight. You saved me lots of money.

[@EhrenSixon]

Thank you for this video. I have 4 wires and in my original thermostat, the power wire was connected to Rh while a jumper wire was connected from Rh to Rc. When I installed my Nest, I did not know whether to install the power wire to Rc or Rh. In the end, I installed it to Rh, but I was still hesitant and I did not know much about it. I'm from South Florida where the weather is quite often hot. Your video provided me confirmation when you said it can be either Rh or Rc for the power wire to be connected to.

[@DUrena-ni3ei]

This is the most thorough video explanation I've seen. You definitely know what you are talking about

[@wereverywhere2.037]

I had a 3rd but it wasn't kicking on my condenser all the time. My old had a jumper rc and rh the nest didn't suggest using a jumper. It would work good but sometimes get really hot in the house.

[@futuradrama]

Like dis dude, broke down da meaning ov every wire and what it does. Damn sure needed dat info for sure👍🏿👍🏿👍🏿👍🏿👍🏿

[@mark.r8900]

Great video. I have a forced air gas furnace used only for heating. Also have a air handler with outdoor condenser used only for cooling. When I connect air handler(cooling) to Rc and furnace(heating) to Rh. The furnace will not turned on. But if i removed the Rc, then furnace works fine. Furnace only has R and W1. Air handler has R, G Y,C. Can my Nest control two separate systems? Thanks.

[@chass105]

I have heat pump system electric Heat-A/C - I bought a nest and I am trying to make sure I am using the correct terminals. The original used Brown (E), Red (R), White (Aux), Yellow (Y), Green (G), Blue (C), Orange (O). For the Nest it is clear which ones to use except for the Brown (E). I have emergency heat so Do I place this on the W1 or asterisk? Thank you

[@KittMcKay]

I'm literally crying rn, we've been almost 2 weeks without heat -in WI, in January, in a cold snap. We bought this house last September, and the previous owners had installed a Buderus Logamax GB-142 condensing boiler for in-floor radiant heat. the wiring job is... less than obvious. Since the Buderus is a two wire system (white and red), there's no common wire, and whoever did the wiring spliced a brown wire to the red wire from the boiler, probably to not confuse it with the red wire from the AC. The white wire from the AC was spliced into a black wire - again, probably to avoid confusion. Avoid confusion, it *did not* Because of the wiring shenanigans, the Nest was freaking out about the wire setup. I finally fixed this by seeing your video and putting the brown wire (red from boiler) into the w2 slot and the black wire into RC. Suddenly the Nest recognized the wiring and now I'm waiting for it to have enough juice to connect to the wi fi. Thank you so much, I would never have enough for a repair tech, as I'm on SSI.

[@brianthecox]

I installed my nest in the winter and come spring I realized I had no a/c. This video solved my problem!!! Thank you so much! You’re awesome

[@SvoBrianRobles]

I had the same problem how did you solve it

[@brianthecox]

Don’t remember but I followed this video and fixed it. Lol 😅

[@jmack84]

Hey Sir! Excellent video! Thank you. I have a split system (One hvac system with 2 thermostats). My downstairs nest has been working perfectly however my wife recently bought me a Nest for the upstairs to replace an old thermostat (which works fine). The new Nest gives me troubles. When I first installed it I had to charge it via USB and then it worked for a pretty good while. However came home one day and it was now stuck in air-conditioning mode (the upstairs was freezing)! The only way to stop it was to remove the yellow wire. I contacted Nest and after an hour and a half of troubleshooting they sent me a new base. The Nest still doesn’t charge unless I throw it on a USB charger AND now I get intermittent “no power to Y1 or RC errors. I have a 4 wire setup. Y1, G, Rc and W1. Btw that is exactly how the downstairs Nest is wired and it’s been working for 2ish years. Do you have a video that explains this? Thank you!

[@petersonfamily6223]

Thanks, our Nest has worked for 6 months now, but one of our 4 Nest Learning thermostats just lost WiFi (Google is replacing it). During the troubleshooting phase, I learned about the battery recharging and voltage amounts seen under Power in the Nest Options (Thanks for that info as well). Our batteries were all 3.7 volts, with the lin at 20 or less. I believe connecting the Common is a no-brainer if the wire (Blue). In our case, we have 5 wire runs to the thermostats, and the Blue is not being used. So I will connect the Blue unused wire at the boiler and connect to the "C" at the thermostat. Our wiring at the furnace Accel CS - System 2000 - EK-1C is not as intuitive as shown in some videos, but we have our boiler installer coming out for our first annual service, so I will have them connect the Blue wire to 24V at the furnace.

[@nikhilpatel5100]

one f the best explainations on all of the different configurations. Go through the whole or fast forward for your current setup and you should be ABLE TO WIRW AND SET UP NEST EASILY. MOST EDUCATIONAL AND STRAIGHT FORWARD all in one. better than nest site. Thank you for your great work.

[@TroTipTriTec]

This video is the best explanation I have seen. It got me thinking….. Is it possible to use the * circuit to kick on a 24v/120v relay in order to control a booster fan circuit? My booster fans draw more than the one amp that my York furnace supports. I connected a relay to the wiring for the humidistat. I connected it before the humidistat so that the relay would kick on whether I needed humidity or not. However, the booster fans only kick on when heat is on and not when the blower kicks on.

[@RobertAcevedo]

James - Thank you so much for explaining all of this in such a clear and understandable way. I have a question - I have a system that has two G wires - for HIGH and LOW fan. Do you have a video that explains where that wire should be connected? Oddly the thermostat appears to be getting power - yet it gives an e75 error indicating that there is nothing connected to y1 or w1 even though the correct wires are connected to the terminals. When I look up the error on the nest site - it says invalid error. I am not sure if this 7th wire has anything to do with it…. so I was hoping you might have another video that could help. Again - Thanks so much…

[@brandondp94]

Hi, Love your nest thermostat videos! I ordered an AC transformer/adapter like you recommended which plugs into your typical wall outlet - as I have two nest thermostats which utilize the boiler for heat (radiant on one, baseboard on the other), and utilize the A/Cs on their respective floors. So my wire set-up is the odd one you touched on briefly (Y, G, and RC. W and RH). The problem I'm having is the nest short cycles the boiler and will make it kick/click on and off repeatedly and too rapidly. I connected the A/C transformer to both RH and C, as I lack the common wire, but it didn't recognize the Common Wire. Can I connect the transformer to both the RC and RH only, and cap those existing wires? Thank you very much in advance!

[@Angelotiangel]

Great video. I am just installing a learning Nest thermostat and and my old Honeywell thermostat has 6 wires and the blue wire was connected to W2. I don't have heat pump or dehumidifier . Should I install that wire in the W2 connection of the nest thermostat? Thank you so much for your help

[@rmunad]

Do you have a video for installation for a dual zone system with a zone controller between the furnace and the 2 thermostat one on each floor where blue c wire is present but not connected?

[@matthewcarmona5537]

thank you so much for your video. I have Question how would wire up a Nest thermostat I want ( 1st Stage heat) W1 to turn on the gas boiler radiant heat and want W2 (2nd stage heat to turn on heat pump ( Y ) and I want (1st stage cooling) to be Y,O. for cooling.

[@mdiazdiaz5612]

After watching this video I follow the steps and it was all so easy after that. 1. I removed the old thermostat. 2. Took a picture of the current wiring. 3. I opened the manual that came with the Ecobee3 thermostat which has many wiring drawings then i compared the wiring in the manual with the wiring of the old thermostat and took a picture of it. 4. Since I was able to find match the wiring of the old thermostat with the Wiring of Ecobee3 there was no need in using the adapter kit that came with Ecobee3. 5. I simply wired my Ecobee3 exactly as the diagram in the manual and that was it it worked fine, no issues.

[@OneHourSmartHome]

Great work! Thanks for watching.

[@omidrajaee7996]

I had to connect my brown cable to OB to make Nest termostat on! Do you thin this is a right wiring?

[@ChristinaD1996]

Thanks for your video, just by explaining what the OB terminal does, you helped explain to me why my fan would go on non-stop 24/7. It was because I had a wire in OB instead of in G. Moved OB to G and now the nest recognizes I have a fan and I can turn it off. Saved me lots of hastle, thanks!

[@chieffschannel8336]

Thank you so much for this immensely helpful video. Your thorough work and explanation made all the difference!

[@ADAngeloM]

I have a 2 stage furnace. Should there be two wires for the "w" terminals or 1 wire that plugs into "W2"?

[@diamond6256]

This is great. My question is I have Nest. Two wires came out, so have no heat. How do I know which color wire goes where? I have a blue and white wire. I have open W and C.

[@cjvx7208]

Will a two cable heating only system be a able to charge the nest learning thermostat??

[@rgvshowmewhatugot9918]

The thermostat has three wires (red, white, and blue) connected to their respective terminals (+12v, R10, Grd) on the comms block. Where do I connect them in the nest ?

[@mikehixonatrealtytrendsllc9988]

I don't see any comments on the Aprilaire 800 steam humidifier? Does it need a control relay and an additional jumper wire from the relay 24v common to the "C" connection?

[@chelin7023]

Seven wires heat pump system; all I needed to know I found it in your video. Thank you!

[@jaxsi4481]

Hi, thanks for the video. I live in the north east and I have a heat pump system. There are 7 cables in my system: red (Rh), white (W1), yellow (Y1), green (G), blue (C), orange (OB), brown (W2). How do I know if the wires are connected in the correct sections of the nest diagram? Is there a way to check in my hvac system that the wires colors mean what they normally mean? Thank you!

[@MeR-md1jq]

Thanks for the video. I have a standard hvac system and air conditioner but my thermostat has the red wire going into RC with a jumper going to RH. I'm looking at the installation video for the regular Nest...not the learning or the E....and it only has one spot for R. Is this going to be an issue? Also, if I buy a nest learning, which has spots for both RC and RH, do I run a jumper from RC to RH? Thanks!

[@blazenvipers]

I wish you would mention more about the colored wires. I actually have 8 wires. Y, T, R, W, B, G, O, X2. Will Nest even work for my older unit.

[@shahriarzolfaqari4920]

thank you for this educational video. i have an office running in a same unit a/c with 2 different wifi now the nest is in other office beside me. can i add my own nest for my office i have 5 wire would it be possible to use the same color code for the new one getting branch out from other office.

[@Dhi-fe5eu]

I have 2 red wires going into the RH wire. One wire is a larger gauge than the other. I’m your opinion, which one could I stick in the R slot since I cannot put two wires in there. Great video. You spoke very clear.

[@JD987abc]

Which nest model did you use? I have a two wire (red and white) gas boiler that is zoned for first floor and second floor. Both are two wire, red and white. What nest model do I need? Your advice would welcome. Thx. Joseph.

[@suryaveluthurla]

Hi, thank you for the wonderful information and video. Can you please help understand what is W (AUX stricken) My thermostat has 7 wires 1. Orange - OB 2. White - W2 AUX 3. Black - W AUX (stricken/cross marked) - what is this please? 4. Red - R 5. Blue - C 6. Green - G 7. Yellow - Y

[@loulocs]

So I have Carrier brand two stage heating and cooling unit. Carrier installed everything including it's branded thermostat which only has a two wire connection. I just purchased a Nest Gen 3 thermostat and I'm now perplexed on how to wire it. Any tips will greatly appreciated.

[@CheffPJ]

This video was exactly what I needed since I didn't take a picture of the last thermostat! You also gave me a pro tip (obvious in hindsight) to go look at the control panel - DUH! All the wires at the control panel were clearly marked, etc.

[@tammylupton7255]

Thank you, this video was very helpful to us, we were wired wrong and your expertise showed us what we were doing wrong.

[@alhoughton5205]

Such a great video! This really helped me understand how this works! Thank you!

[@OneHourSmartHome]

Great to hear, thanks for watching and subscribing!

[@alexispedroza5457]

What if I have a jumper from RC-RH? Will the best turn on the heat if I have it plugged into the rc only?

[@ozer.dogus0]

Hey I have boil heat. my old system has No, Com and Nc. What are they going to connect on nest ? Thank you!!

[@linggu2846]

What if I do have a dual fuel system and one single Red wire. Where should I put it in？ Rc or Rh？

[@linggu2846]

By the way I have cooling and steam boiling system that works in the old thermostat but I don't think I have W wires..... Which is weird after seeing this

[@Leo-nm4th]

Hi, I have an older (2021) Google Nest Thermostat that I would like to install on my hydroponic boiler system. Currently I have a Honeywell programmable thermostat that has 2 wires connected to it. Before changing out the Honeywell thermostat I powered ON the Google Nest thermostat to read the display instructions. The instructions are asking me what wires do I currently have connected to my Honeywell Thermostat, I answered RED and WHITE (I only have HEAT, no colling or fan because I have a boiler with forced hot water). After entering this info, the instructions are stating i need a Nest power connector Do I really need a Nest power connector?

[@musika360]

Thanks for this amazing tutorial. I have a problem with my nest 3rd gen. Iwhen i put it on cooling i receive heat. I did everything to understand but I don’t find the solution

[@PopRockLipstick]

I have a 2 stage air handler and it’s mostly for heat but has y1 and y2 and only a w1. We find the air doesn’t seem to push while the heat is on. No heat pump is hooked up yet. Will be just not this winter) Would we be able to switch the y2 to the w2 in the nest and in the air handler or how would we go about that?

[@aquarius1924]

Hello! I am installing a Nest Thermostat. Where do I connect the Brown wire coming from the wall? Happy New Year! Thank you.

[@ballerina6179]

Thank you for this video. I haven’t connected my nest thermostat yet because the app says my set up isn’t compatible. I’m not happy and I don’t understand why. I have 5 wires - they are: W, Y, G, Rc and Rh with a jumper between Rc and Rh also. I don’t understand why I’m “not compatible”. My current thermostat is a White-Rogers. I have a natural gas furnace that provides heat and central AC as one with the compressor unit outside. It seems pretty standard and I just don’t understand why Google home says no. Any ideas?

[@joshuachavez9086]

Current system only has a common wire and R/Rc via a jumper. There are all other available wires available. however, I attempting wiring a T9 Honeywell but no wiring process was working. My question. Do I only install the nest using the two wires currently being used? or do i attempt to wire using all available wires?

[@scottstruif3939]

I scrapped my old heat pump, but not the forced air electric furnace. I don’t need Y1 or OB without the heat pump, but the Nest displays an error if Y1 isn’t hooked up. How do you disable the cooling mode on the Nest?

[@sterlingmullett6942]

My AC was blowing HEAT instead of cold air after setting it up. The W is also used in OB on the old thermostat. I didn't think I had a heat pump but apparently I do. Found a single mention online where a person moved the W wire to the OB and restarted the NEST. I did this and now COLD air is coming out. I hope I didn't create a problem that'll manifest in six months but it seems to be working.

[@ifiwooddesigns]

Very well said. I live in northern climate with only heat. My old wires are red, white, green and blue wires. I’ve recently hooked up my nest and everything appears to work but get message N256 and see the C and G wires are undetected. I can’t seem to find a diagram on my old wiring to feed the nest. What color wires should go to my nest connectors?

[@kewalarun]

I have one Lennox AC unit which is controlled by two Lennox M30 thermostats. One of the thermostats installed in my Bed Room has 5 wires only i.e. R, Y1, W1, G and C, the living room thermostat has all these wires with additional Orange wire connected to ACC2. I assume I can connect the R wire either to Rc or Rh, however where shall I connect the Orange wire which is connected to the ACC2 on M30 thermostat? Any help would be greatly appreciated.

[@natgasf7236]

Thanks, just bought two Nests and have a oil boiler. Will work on my R & W

[@haciendafamiliallamas2549]

Wooooow!!..super clear.. understanfable explanation! That's what we are talking about... I have a feeling that you really know what you are talking about!!... Million Thanks!!.. We appreciate your very valuable time!!..

[@jackperlmutter5957]

Question, Goodman heat pump, with y1, y2, r and c wires available. If I just want to use it for AC can I just connect the y1 and c wires to the wiring block in the Goodman has furnace. Is using the 2 stage heat pump feature worth it. My furnace wiring block only has a y terminal. Would I just run the y2 back to the nest thermostat if I to use the y2 terminal for 2 stage? Thoughts? Thank you, Jack Perlmutter

[@marcelotango9469]

Thanks for the video is excellent. We, my son and I , install one of those today but there were some problems, as you mention on minute 13 here, short cycling, the ac was going on and off so he decided to turn it off. We change a Honeywell to the Nest same that you show in the video. we mess up on one wire didn't where to connect it. We had W on E, Yellow on Y, Green on G, Red on R, Blue on B, and Brown on C, on the Honeywell. Move to the Nest and connect Yellow to Y1, Green to G, Brown to OB, White to W1, Blue to C, Red to RH. Can you please verified the connections and see if you see something wrong to fix. Thank you so much

[@teklesenbetgebreamlak7365]

Thanyou for clear explanation l have a ghesstion is nest thermostat work good l replace to trane single stage heat pump if you can help me how they connect

[@normp3273]

With the RC and RH, I have jumper cable between the two. I live in a condo that has a unit for heating and cooling just outside my door. I don't have a furnace. Google says I don't need that jumper which I find strange because if I didnt need it, it wouldn't be there. Your thoughts? I'm getting ready to buy one of these thermostats. My wiring is as follows: Y1|G|RC|C| |RH|W1|O/B| RH and RC have a jumper connected between the two.

[@bigal2500]

I have a G, O, R, Y no common or white. Can I still install like this to Nest learning thermostat

[@armandomartinez6530]

great video very good explanation for older systems that have more than 5 wires and that is the problem with the others videos that explain the easy replacement of a thermostat and not the confusing old thermostat like my in my house that carry about 9 or 10 wires that are so confusing that I am intimidate to install a new thermostat like the Nest for the little information and experience from my part ,thanks for you explanation

[@carlos9099]

excellent explanation thank you... one cuestion what color would be the C wire, . I have the 4 wire RHRc, W,G,Y . but I have to wire more not connected to my thermostat...

[@popeyehikestheappalachiant2699]

I have a Honeywell WIFI stat. I want to hook it up to my P61A Haman pellet stove. The screws on the T stat are K Y2 W2 G W C Y R Rc (below the screws it has K L AUX/E G O/B C Y R Rc). I know I take my temperature sensor cord, split one of the wires, then feed it through T stat. Which of these lettered screws do I wire it to?

[@261Pro]

What about oil heating and base board boiler... does nest have a stat that takes line voltage?

[@mrstanskaggs1]

If my OB does not get power through the NEST, the AC does not come on. I seem to get heat when my NEST is set for AC. My system has been wired and operational for 3 years.. I believe a software update was done remotely by Google in November or October.. and this spring I could not get AC when I switched over to cooling mode. I have put my old dumb thermostat on to eliminate the chance it was a reversing valve or other issue with hardware.. works correctly and OK with old thermostat.. What are your thoughts? Heat works, and diagnostics says NEST is OK.. I have a heat pump system with six wires (Y1, G, OB, RC, W2, & C)... NEST says it is wired correctly and it has been running for nearly 3 years good... Hope you have an idea I can utilize... thanks friend!

[@11ghudson]

I had the blue common wire hooked up in my old thermostat. Do i need to hook it up in my new nest thermostat

[@christopherkarpinski9432]

My 2 wire system used w for power is this why I’m having issues? Should i just swap them

[@mdiazdiaz5612]

Great explanation, thanks i was worried because when i removed my thermostat the RED was connected to RC (Honeywell)and on the new thermostat (nest) the RED get's connected to RH. Thanks for educating us.

[@OneHourSmartHome]

You're welcome! Thanks for watching and the comment.

[@aeronauta2011]

GREAT EXPLANATION, THANK YOU

[@antoniolmendez]

First I want to thank you for a great explanation, I happen to have two red wires , 1 yellow , 1 white , and 1 green , but no common , my nest keeps getting depleted, was hoping you can shine light on this please

[@michaelswain160]

Thanks for the help, I was able to figure out in my dual-zone home that the previous owners had put ONE zone's blue wire into the Common Wire slot, and had put the OTHER zone's blue wire into the Blue slot (because it's blue, so obviously it goes there, right? Pffft). I don't have a heat pump and was able to figure it out with your help!

[@hl2428]

Can I use Nest just to enable my Worcester boiler but then use Comfort 2 RF to modulate?

[@Tmac2016]

What If you have an E wire

[@redeye259]

Great video, do you happen to have any Nest videos for a heat pump system with a 2 speed fan?

[@travdingle]

First off great explanation and diagram.... I do have one question!! Why not run a relay back to nest (C) common wire

[@monaphil6568]

I've been searching for wiring help for the Google Nest Thermostat, not the Learning Thermostat, or the Nest Thermostat e. I do not have a C wire. I finally found a solution by purchasing an AC adaptor from Amazon for $20 with 24v to use as a C wire. I'm replacing a very old round Honeywell mercury thermostat with only a red and white wire. Attached one end of the adaptor into the C, and the other end into the R with the red wire. Finally works correctly.

[@claud2537]

Question: I currently have a Nest thermostat and have my red wire connected to the RH instead of the RC (I have a standard a/c and furnace). I know with the Nest it doesn’t matter which one of the two you put the red wire in. However, I’m looking to switch from the Nest Thermostat to the Ecobee Smart Thermostat Premium. With that particular thermostat, would it matter which one (RC or RH) I put the red wire in or could I do either one like the Nest? Thank you in advance!

[@joysilva777]

Hi! Thank you for your help! This is so daunting!😢 My heater and cooler are separate. My air conditioner has 3 light switches and my heater has an old fashioned thermostat..

[@MightyMike510]

Great video. After I connected my C wire to the furnace control board and Nest, my app now shows thermostat is online.

[@dasoarda]

thank you for your video, I have some issue with Nest, it running 14hr a day, I do not think it should run that much. I had no C wire but was able to add using unused wire and my old thermostat had jumper between R and Rc. I connected the red wire only to Rc. Do I need to add jumper, Nest recommendation was without C wire but two red one go to Rc and other to Rh

[@1sylvan1]

I have the Gen3 thermostat and lately I keep getting a low battery warning and I have to take it off and charge it manually and put it back and it works for awhile. I’ve never had issues before. Could my battery be shot?

[@Dhvz18]

Thanks so much! This is helpful. I had a question, I bought the google nest (with the mirror) and the app is saying my wires are not compatible. I have: R, YI, W2, E, G, B, C. Nest has: Y, C, W, G, R, *OB I am not sure if I have this right: Mine = Nest R = R YI = Y G = G B = OB C = C W2 = ? Maybe W E = ??

[@Litld02]

I believe mine is like this as well. Did you find the answer? I can’t get mine to cool. And it’s HOT in Texas right now.

[@thomasfucci2260]

I have six wires on my thermostat that I am trying to figure out what to do with the Y2 wire on my 4th Gen Nest that doesn't have a place for a Y2 wire. Any suggestion would be much appreciated. Thomas

[@rafaelsamano4043]

If I have a jumper in RC in the old thermostat connected for my heater, what should I do?

[@shawnvosburg]

Great video! I have a slightly different set up than you spoke of. I have a four wire system, three match your video; G, Rh, & Y1. My old thermostat has a wire in the Y/O terminal. Am I wrong to assume this is heat and should be put in the W1 terminal of the Next Learning Thermostat? Thank you!

[@calebacosta4448]

Have a nest e to install. Existing wiring use blue “x” wire. Which I assume is auxiliary. How can I make this work.

[@randyrobineau2699]

My thermostat uses the W1 and the Rh. It worked great for about a year but now I keep seeing my thermostat go into battery mode. I think I may need to hook up a Common Wire because my house barely ever calls for heat.

[@roderickdeveaux8634]

had my heat wire going to heat pump since i completely fllowed old tthermostat setup. changed it after watching video now all good

[@sarkmep3301]

If 24vAC power, need common terminal or not for charge the battery charge?

[@ikogan3753]

I have a jumper between Y and W1 (yellow wire ) and also white wire connected to O terminal. How those wire connected to newest nest thermostat ? I got a conventional system , no heat pump.

[@kenyadevaultrobertson5722]

Just purchased a google nest, but I have a duel zone system one that controls my upstairs and one for my downstairs. Is this a compatible system?

[@markhrywna]

This is helpful. I ran into an issue but I'm not sure it's explained in this video, unless I misunderstood. I installed a Nest but our first floor has two separate thermostats: A main one and another for a bedroom but it only operates the heat, not AC. After installing the Nest as the main thermostat, it seems to have superseded the bedroom thermostat, meaning the heat runs throughout the first floor, whenever it kicks on, whereas before, it would only run the main thermostat. Previously, we could control the bedroom heat but setting the temp on the bedroom thermostat. It makes for a pretty warm bedroom most of the time. Is there a simple fix to have Nest to bypass the bedroom thermostat/heating system? Or might it require something more advanced?

[@Drhalo69]

so if I only have 5 wires, can I move the Common wire to the * to power the humidifier?

[@elevatedad]

thank you for sharing this! I am looking to upgrade my thermostat. And your video is very helpful!❤

[@shawnjohnson7696]

Thermostat E: Can I put two wires into R since I have no RC or RH in a heat only system, since I need a common wire. Due to low battery issues.