Nest Wiring Diagram: Full Explanation!

[@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 .

[@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.

[@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.

[@johnwest2128]

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

[@DUrena-ni3ei]

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

[@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.

[@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!

[@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 😅

[@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.

[@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!

[@chelin7023]

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

[@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.

[@futuradrama]

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

[@chieffschannel8336]

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

[@aeronauta2011]

GREAT EXPLANATION, THANK YOU

[@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.

[@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?

[@alhoughton5205]

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

[@OneHourSmartHome]

Great to hear, thanks for watching and subscribing!

[@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.

[@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!!..

[@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

[@roderickdeveaux8634]

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

[@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.

[@mananarora7327]

Thank you so much for this video. Because of your video I was able to install my Nest thermostat on my own. I appreciate that.

[@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

[@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.

[@williammarra8903]

This is a very well done presentation - thank you for making it so clear!

[@johnwebb7699]

Brilliant video! This answered every single question I had with regards to Nest wiring configurations. THANK YOU!

[@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.

[@elevatedad]

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

[@AK-yn4br]

Best explanation I saw so far, Thank you!

[@frantz-ericcelestin6693]

Thanks a lot I was struggling with my nest thermostat because we had lost the original wiring from our old thermostat but now I’m all good. Great video thanks a lot

[@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.

[@dante04srt]

Great explanation. I had to hook a few of these up for a client and am not familiar with HVAC systems so this helped tremendously. Thanks

[@OneHourSmartHome]

Great to hear. Thanks for subscribing!

[@pauldobisz1518]

Thanks this explains a lot for us novices😊😊😊

[@HumaQaiser-z3b]

Thank you so much, stay blessed...

[@billnict1]

Thank you, your video helped me install my new Nest Learning Thermostat on my single-stage system...

[@OneHourSmartHome]

Nice work!

[@dinodesario831]

This videos was very helpful for installing my nest 👍🏼

[@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.

[@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!

[@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

[@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..

[@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.

[@RichSmith-e4g]

Excellent demonstration. perfect!

[@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!

[@blackmarkettrucking5821]

God bless you sir thanks for you're help.

[@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…

[@Broncs78]

Thank you for this posting buddy. RC and RH had me confused thx very much for helping. Hv a blessed day!

[@OneHourSmartHome]

You too thanks for the comment and subscribing. Have a great rest of your weeekend!

[@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.

[@gamingwithiron1270]

Thanks your videos are Nest are super helpful. Question: if I had an old nest that only did the cooling with four wires: R, G, C, Y1. If I want to get a new Nest for both AC and boiler (which is two wires without C), do I need another C wire for the boiler or I could just rely on the C wire from my AC. Thanks so much!

[@CryptoData]

Thanks man! Awesome video that answered my questions about Rc and Rh slots :)

[@redeye259]

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

[@HunterKiller113]

This really helped. Thanks for posting

[@aquarius1924]

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

[@Ynot-Tony-1]

I have a two-zone heating system with a power issue. I have a Honeywell thermostat upstairs and recently installed a Google Learning Nest 3rd Gen in the downstairs. None of the wiring has been changed at the furnace and they are both two-wire (red & white). When I increase the temperature upstairs, I get an error message on the Google Learning Nest that there is a power issue, and when I turn off the upstairs thermostat the error message goes away. My question is can I wire both thermostat wires to the Google Learning Nest (Down - Rh+W1 and Up - Rc+W2) to control both heating zones with one thermostat and the two sensors that came with it? I’m looking at your diagram at (7:00) where you say Rc & Rh are basically the same and I have no AC just heat.

[@slc9800gtx]

Great video.

[@wmonroe21]

Dude… Can’t thank you enough for the info. Great video.

[@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!

[@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.

[@PedroGarcia-xq7un]

Awesome presentation 👏

[@donnie4044]

I have a question. I've got 6 wires. Y, G, R, W, C, RC hooked up to a Honeywell. Now I got the Best and hooked up to the Y1, G ,RC, W1, C, RH and the heat kicks on but not blowing out. It says rh connected but not detected "N72". Spent 2hrs troubleshooting with several techs and still nothing

[@MightyMike510]

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

[@mannyguillen3603]

super helpful!! thank you

[@OneHourSmartHome]

Glad it was helpful!

[@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

[@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?

[@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.

[@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!

[@ChrisComeau]

Exactly what I was looking for, thanks!

[@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!

[@CoachTrudeau]

Great explanation on all. I bought the new nest gen 3, nothing was working according to their directions. I had a 4 wire system, but the white wire was connected to OB. You said in the video to put that wire on W1. I did, everything works now. It's also nice to know what all those wire spots do. Our business has 3 furnaces, and now all 3 are working properly now. Thank you. FYI, I called OnTech (Google tech), he showed up today, and I asked him about it all anyway, and I knew more than he did! (Just from your video). My only question that I still do not have answered: How can I get the fan to run on "high" all the time. The google help says it can be done with my Learning Nest, but I cannot get it, and the Google Tech was clueless (as always).

[@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?

[@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!

[@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 ?

[@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.

[@petersachs764]

Thanks, I had a Nest Gen 3 connected to a Burnham/Beckett 80's two wire system here in chilly central Massachusetts using the Rc and W1 wires. I was concerned because the installer used Rc instead of Rh. I moved the wire from Rc to Rh and the nest asked me if my wiring had changed. I said yes and 30 sec later I'm back in business. I guess the Rc and Rh in this case are the same but its nice to get your confirmation rather than feeling uneasy with the much less detailed videos out there. Can I assume that during a hot summer when the Nest never "calls" for heat that the unit draws just enough current to power the Nest without unnecessarily turning on heat or could this explain why i need a new Nest battery after 3 years?

[@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?

[@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.

[@mattzack49]

Dude...this rules. Thank you.

[@travdingle]

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

[@omidrajaee7996]

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

[@tyronemckay5133]

Thanks got my nest installed in less then 5 mins.

[@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

[@ADAngeloM]

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

[@hrvpictures7786]

Thanks for your video, I have a Honeywell thermostat which has only two wires named A&B. It seems it got the high voltage on it, can I connect my Nest 3rd on these two wires and which I should connect to? Is is it possible at all or I need to install the main

[@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

[@TheWaynecollins]

Great video on how to setup the nest with a heat pump. I'm wondering will all nest thermostats work with a heat pump ? I have a nest that I installed a few years ago on my oil burning furnace heating system. I'm planning to replace this furnace with a central heat pump and was wondering if my nest will be compatible with the new pump.

[@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?

[@lisat3404]

What should I do with a W1 that has a jumper to W2? I assume the jumper is the power to the Emergency Heat switch on my current thermostat. I have an electric heat pump and would like to switch from a ProSelect model PSTS21NP thermostat to the NEST learning 3rd Gen.

[@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...

[@Tmac2016]

What If you have an E wire

[@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

[@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?

[@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.

[@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?

[@lindseymcgovern8952]

I've got 6 wires as well - C, W2, R, G, Y and O/B. Is R the same as either Rh or Rc?

[@ramizvohra1305]

Thank you so much for describing very smoothly, but have 1 question regarding my old thermostat, so it has 5 wires as follow RH= 24 Volt, Y/0= air conditioning Compressor, W/B= Heating, G= Fan, Y1= Heat Pump Compressor as per my old thermostat diagram (Hunter Model 44360), if you can describe me which wire goes where please, and thanks again.