Nest Heat Pump Wiring Diagram: How To Wire Nest With a Heat Pump

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In this video we teach you how to wire a Nest Thermostat with a Heat Pump. The Nest Thermostat works great with a Heat Pump set up but it's important to understand the Heat Pump wiring diagram for the Nest Thermostat.
Wiring a Nest for Heat Pump operation is different than wiring a standard HVAC system. Heat pumps operate differently than standard HVAC system with a furnace and air conditioner.
Heat pumps use a reversing valve to change the direction of flow of heat through your heat pump system. Because of this it's important to know what wires go where for your heat pump.
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Опубликовано:

23 июл 2024

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Комментарии : 332

@bsmoovekutdr 2 года назад

This by far the best video for explaining the heat pump itself and the Nest thermostat. All the information provided in this video is just what is needed.

@LittleSizzleKid 3 года назад

You are the best. Just finished setting up the Nest thermostat in the basement which has a heat pump. I also watched your other video for adding a common wire to the unit upstairs. Your explanations are very easy to follow. Thank you...

@SouLesSfAtaLiTy 3 года назад

Thank you! I was freaking out a little setting up a nest in my new house because previously I had a very simple system and now I have dual heat and I kept seeing all the warnings about how I could mess up my system. I understand that I’m not a pro and I still could mess it up but these are the same exact wires that I have available to me other than the emergency heat asterisk one. I didn’t necessarily need this video to set it up (already had it done just wanted to double check) but I don’t like setting something like this up without knowing what the wires mean so I really appreciate it.

@ramchillarege1658 3 года назад

I have watched two of your videos. You are very good. And, I finally picked up how thermostats manage to work without a common wire.. they steel a little current through the other circuits but do not sink enough to turn them on. That explains it.

@HardDriver3950 2 года назад

Incredibly informative video, you are an AMAZING teacher! Thank you so much for the clear explanation!

@surenaustin 2 года назад

Thank you! Your video saved the day for me as I was installing Nest Learning thermostat for my heat pump HVAC system in Pflugerville, TX. Your graphic with red outlines was the clincher as I had 7 wires. There were no wiring diagrams provided by Nest engineers, which is so basic for HVAC system variations. Great video and very much appreciate your knowledge and teaching abilities.

@eniac78 3 года назад

I watched this and another video of yours to figure out how to install and fix my Nest. This one specifically addressed my kind of heating system. Thanks!

@danielruch6663 Год назад

Thank you so much! We installed the nest during the fall so never new whether we’d wired it correctly for cooling(we hadn’t) thanks to you we were able to get cool air on the hottest day so far!

@toneyjones7532 2 года назад

James you are awesome. Great explanation of the nest. Answered all my questions. System works as designed now.

@Tlann12 2 года назад

After many hours of research, you sealed the deal for me. Thanks!!!!

@lerantebenjamin2033 3 года назад

Answered all my questions in 10 minutes. Thanks.

@rightisright55 4 года назад

Excellent video. I have a White-Rodgers 1F92-71. I have 6 wires but I also have jumper wires. Nest online says I don't need jumpers and it appears the Nest thermostat does not allow enough space for more than one wire at the terminals. I'm glad you mentioned the software programming of the Nest. Great video!

@XXxxLaloCuraxxXX 4 года назад

Excellent video! This answered all the questions I had asked NEST that they could not answer over chat or over the phone.

@OneHourSmartHome 4 года назад

Thanks!

@Rockinthehill 3 года назад

Wow, this solved the issue for me where the Nest was telling me I was wired up as a dual heat source when all I have is electricity. I watched your video and moved the White wire to w aux and moved the brown wire from the W1 slot to the star slot and now it's wired correctly. Thanks so much

@jordangeorge4463 2 года назад

My aux heat won’t turn on so I move the white wire to W2 and black wire to * thank you for sharing

@sanurshenoy5739 2 года назад

Thank you for such clear explanation. Highly appreciated!

@Alex-lz1so 3 года назад

James did it just like you showed and My Nest was up and running in about 20 minutes. Thanks brother.

@OneHourSmartHome 3 года назад

Glad to help! Thanks for the comment!

@johnreidmoore 4 года назад

SOOO Helpful! thank you sir!

@tnpatriot7468 16 дней назад

Thanks for your video...very helpful for a novice like me.

@mkvll86 3 года назад

Thank you for your help, man. I got it all running.

@Eli-rw8wm 2 года назад

This video made my day, after 3 different visits from 3 Professional HVAC they couldn't figure this out. Not too mention the $150 dollars they charged me each time. They would either get my heat pump only producing heat or only cooling. They never connected the reversing valve wire from the control board to the thermostat as the wire is spliced in the middle. I did this myself after confirming and chasing down the wires. I noticed they were both not connected on either end. After watching this video I was able to understand what each wire did and then relate it to my issue.

@robertcorbin9386 4 года назад

Thanks for the video saved me some money on professional install

@OneHourSmartHome 4 года назад

Glad I could help

@SofaKingA 2 года назад

Great vid, exactly what I needed, thank you!

@christianc1313 Год назад

Fixed my O/B issue thanks to you! Cleared out all my devices and set up incorrectly. Was calling for cooling instead of heating.

@mikeromeolima 3 года назад

Great info and presentation

@adamskiba 4 года назад

Can you explain how to connect and how it operates a heat pump with multistage heat/cool since nest is compatible with 2 stage cooling and 3 stage heating.

@darthchaos1982 Год назад

Would also love this.

@dazthinker6303 Год назад

If it's compatible like you mentioned then the 4 electricians I have hired need a worse review.

@davidgardner3792 3 года назад

Thank you! This fixed my problem! I installed a nest e thermostat late last spring. When in cooling mode, my draft inducer fan (for heating) was turning off and on continuously when the air conditioner was running. After what you said about sometimes using the "common" wire, it turns out that I had to connect the blue wire to the "C" terminal and also to the "C" terminal on the furnace circuit board. My old t-stat did not use this wire. The nest e directions did not require me to do this. It solved my issue, no more draft inducer fan running during the cooling mode. THANKS!

@OneHourSmartHome 3 года назад

Great to hear your problem was solved. Thanks for the comment and watching.

@RedeBustosRedeadventures 3 года назад

Hi there, I have a similar problem but in heat mode and emergency heat option. After that our Nest stopped working with the WiFi is getting bad, looks like it’s trying to connect find a connection even if you want to used just like a thermostat with “Do Not Connect” option and sometimes it’s doing a fast reset that doesn’t works because all the time the Nest never find a signal automatically or manually. Now our Heater is turning On and Off every 1 second when the temperature is close to the set temperature and I need to down the temperature to turning Off, so I believe that our system will damage soon. Do you know what’s going on?

@dannyunger1618 Год назад

This was such a massive help wow! Google should have a link to this video with the nest!

@andrespeisajovich8491 2 года назад

Great video, you saved me a 100 dollars service call!! I was able to fix it myself

@MyDIY2HowTo 4 года назад

This is awesome. Simple enough for a layman like me to understand. Thank you Sir.

@OneHourSmartHome 4 года назад

Thanks for the comment, happy to help!

@buddygallo4061 3 года назад

Great video. Very informative. Thanks

@cybercab 2 года назад

Awesome! This is exactly what my issue was. Thanks

@imanib6392 Год назад

This was awesome! Definitely helped get my nest started🙂

@vishalramphal5117 4 года назад

Awesome video, thanks for sharing!

@OneHourSmartHome 4 года назад

Welcome!

@alejandrofelixandfam6843 2 года назад

Problem explained and solved....Thank you

@samhouck1833 Год назад

Fantastic explication! Thank you.

@chriscastor8328 3 года назад

This was a huge help. Double checked what Google sent me and they had me wiring my heat pump up like a dual fuel setup. This was confusing to me as I have no gas lines going to the house at all. Not entirely their fault as whoever installed the system originally ran the Aux heat as a white wire plugged into a W1 terminal and a black wire plugged into terminal with 2 labels W2/X2 which has to be emergency heat.

@focusy418 4 месяца назад

May I ask if the black or white that has to be going to the * terminal? Thanks!

@geoffsandels7831 2 года назад

Wow! Great help! Exactly what I needed. This was fantastic. Thank you for all of your help!!

@dominique8309 3 года назад

Oh my goodness! Thank you so much for this amazing video. I feel so smart now fixing the heat pump issue myself. I had warm air, but it would not start my unit outside, so I figured it is a heat pump issue. I checked the wires (which I installed initially) and just pressed the OB cable a bit further in, despite being properly in. Nest recognized some changes in wiring and prompted me to change my heating options, among one of them being the heat pump. Cranked up the target temperature and lo and behold , AC unit outside kicked on. My question is, is the heat pump heating option going to be less expensive then without. Since I had heat already without using the pump. Thank you!! I will subscribe to your channel.

@renegade3552 2 года назад

Heat pumps are 2 to 3 times more efficient I read.

@yovanisaavedra1311 Год назад

you are real teacher thanks for spend time to teach other

@johnatengono1990 3 года назад

Thank You very much!! You saved the day. Simple and to the point

@OneHourSmartHome 3 года назад

Glad to hear that! Thanks for watching!

@johannatomsick1362 2 года назад

This is so helpful.

@robertleever2138 2 года назад

Nice job. Very informative.

@DavePrice1986 2 года назад

Thank you so much for this video! I thought I followed the Nest installation instructions exactly, but there was nothing to indicate special wiring for a heat pump. I mis-wired and put the O/B wire in the W1 (like it told me to do...) and got heat only. Thanks for the education!!!

@leqi7774 4 года назад

I have a two stage gas furnace and I am going to install another heat pump on top of it. Do I need to connect w1 and w2 for two stage gas furnace and connect y1 and ob for the heat pump?

@burton926 2 года назад

Thanks for the overview guide. I'm curious if the Nest can be wired to run a gas furnace for auxiliary heat. I'm considering adding a heat pump to my existing heat-only HVAC system and would like to use the furnace when the hear pump would be overtaxed by the exterior temperature (more efficient than the resistive coil). I've also heard of a UK smart device from Homely Energy that will run your heat pump based on current weather conditions and electricity prices. Would be great if that could be combined with a nest for automation.

@aaroncali17 3 года назад

You mentioned that heat pumps can use the aux heat as a second stage depending on the delta from the temperature setpoint. Do you know if the most basic Nest Thermostat has that functionality? I can't seem to get my to work and I don't see an option for "Pro Setup".

@futuradrama 2 года назад

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

@TheSupraRegistry 3 года назад

Thank you bro! My Braeburn has 6 wires but it had R just labeled as R so I wasn’t sure if Rc or Rh and my O/B was just O.... This video let me know that R and O are good to go ;-) thanks

@gabestefanescu 7 месяцев назад

Awesome video! Thank you so much!

@dforseth1 4 года назад

Just bought a new house and would like to replaced Honeywell T6 pro programmable thermostats with my nest 3 gen. The video was great but I have an orange and brown wire that are connected to S “ input for wired indoor or outdoor sensors (TH6320U and TH6220U only) I am not sure my nest will work any suggestions

@brians2458 4 года назад

Great video

@JordieG8 4 года назад

The L/A is simply wire the trips a light on the thermostat when Aux heat is active correct?

@gabriellepass4086 4 года назад

Amazing video, helped a lot

@OneHourSmartHome 4 года назад

Glad you liked it!

@TheMechanic204 2 года назад

Absolute legend 👏

@mattleverton4255 4 года назад

Super helpful, thank you. On my old thermostat, I also have a F wire. The manual for the old thermostat reads that this is a "heat pump reset (powered continuously when in emergency heat)". Any idea where that wire would go on a nest thermostat?

@juanbarriga2982 2 года назад

sounds like it would go on the Star pin on the next thermostat.

@brysonutsler7810 3 года назад

Thanks for your videos. I don't have a c wire and want to install my nest thermostat. I have the c wire adapter kit that you put on the furnace. I have it hooked up but can't get it to work. How would I hook up the 4 wires to the thermostat after having the adapter on?

@dan.howard 4 года назад

So, would you be ahead to wire the EMER with the White wire as opposed to the W2? If I heard you correctly, it is best to leave it to the W2. But you make a great case....

@Mister-Brightside 4 года назад

Hi - I currently have a Lennox Elite XC16S036 unit, and looking to convert the thermostat to a Nest one. I can account for the Red, White, Blue, and Yellow wires, but I can't understand why there is a Green wire going into the "B" if my Lennox Elite XC16S036 isn't a Heat Pump? Looking for some advice, and thank you for sharing your wisdom!

@RR-zj6jq 3 года назад

I watched your video on boilers as well and they are great, thank you!! I have a question though, I have boiler and a heat pump. Can both be wired to the same nest? (Boiler for heat and pump for AC)

@nealsheehan4055 3 года назад

If my system has a propane back up how do I handle that in the set up process? This was very well explained, I just need one bit more. Thanks for any insight.

@reiffgv 2 года назад

You saved my life, thank you so much!

@OneHourSmartHome 2 года назад

Thanks for watching glad to help!

@onesweetworld9 2 года назад

That was great, thanks! Would be cool to have an explanation of: if this is the problem, it is likely related to this wire. Also would be good to know which color wires go in these.

@michael2810 2 года назад

Learned what the ob wire did helped me the nest had it backwards thankyou

@markwidman8559 4 года назад

I have a Robert Shaw moldel 9701j2 that I am out to a Nest. I have a heat pump as well. I found that I have 8 wires coming out of the wall and they were all connected to the thermostat. Besides the R, Y, W, G, Blue wires I have a brown that was connected to the "C" terminal. The orange and black wires were connected to a terminal next to each other.. Where do I connect the orange and black wire to the Nest connector plate? Thank you!

@RedRod1JR Год назад

Great Video - Great Information Info: When I was doing the dry run in the Nest App for our all electric heat pump, Nest indicated to make the R connection to RH. Thanks

@willreed674 4 года назад

So Helpful. I was struggling to get my heat pump to kick on this helped me see my error, thanks!

@OneHourSmartHome 4 года назад

Great to hear!

@tinasewell1604 3 года назад

Is there any way to use this device to make a wood pellet stove and heat pump work together? Bought the house with just a wood pellet stove. Installed new set up for that (on a thermostat control) and the heat pump installed has a separate thermostat control. We would love to have both working in cooperation with the other.

@luissantiago2571 Год назад

😂😂😂 hilarious how you were trying to hold your laugh initially with your wife making an entrance. Great job on the video btw… 👏🏽 👌🏽

@OneHourSmartHome Год назад

Lol, glad you enjoyed thanks for the comment!

@capone062001 3 года назад

I have a Fujitsu mini split, I use a adapter (UTY-TTRX) to connect to nest. In the nest equipment setting, what should the heat set to. Choices are force air, propane, electric, gas, oil, geothermal. What should the settings be using the mini split.

@chicenburger 4 года назад

Just wanted to add a bit of info about heat pumps: Auxilary heat also engages when the heat pump enters "defrost mode" which, (much like a freezer) occurs when the "evaporator" (outdoor coil in this case) ices over tripping the sensor which causes the reversing valve to disengage, turning the system back into an "air conditioner". This causes cold air to blow inside the house. (ya, in heat mode!) So to offset the temperature split, the electric heat strips engage simultaneously until the defrost cycle completes, and the system returns to normal "heat pump" operation (extremely inefficient way to do your heat).

@OneHourSmartHome 4 года назад

Thanks for the informative comment!

@RedRod1JR Год назад

Thanks

@davidportillo6006 Год назад

Hello. I think this comment helps with my issue. I have a heat pump that is tuning off before getting to the set point temperature and starts blowing cold air inside in heat mode. I think is because I connected the aux heat (w2) but I don't have the auxilary electric strip ( optional accesory). Should I disconnect the W2 cable? Or adjust some setting in the Nest thermostat?

@chicenburger Год назад

@@davidportillo6006 Whats the outside air temperature? If the unit is going into defrost because its too cold outside but you dont have an "emergency" electric heat strip, it will blow cold. Although noone should have ever let there be no heat strips unless you live in South Florida, its more likely that the heat strip isnt engaging either because of relay, board, or T-stat.

@kellymcdonald8956 2 года назад

I have a heat pump for summer cooling and shoulder season heat. For winter I have a wood fired boiler. Have not been able to determine if Nest will work for my setup. Would love your insight. Thanks.

@jtab5392 4 года назад

I have mine wired like these except the emergency heat. My heat strip wasn't kicking in and when I switched from heat to cool no issues. But when I switched from cool to heat my unit is short cycling. Do have an info what could be going on?

@AndyTM01 4 года назад

Thanks for a great video! I live in a newer condo w/ heat pump and my current thermostat has only 4 wires attached - green (C), red (R), white (A+), black (B-). It's a Climatemaster ATC32U02C. Google support isn't sure if my system is compatible... any tips or advice?

@x-man4702 3 года назад

Is the wiring connection to the Nest E thermostat the same for a dual stage heat pump system?

@stephensmith3051 Год назад

Great video & clear explanations! I live in Hawaii & only have a 2 stage cooling system (Y1 +Y2). I'm trying to install a safety shut off switch on the condensate drain line. Switch instructions say install inline with the RED wires. When I test the RED shutoff connections - the power is lost to the NEST & the AC air handler keeps running - not the desired outcome to shut down the AC. What would you recommend for the shut off inline wiring please?

@jamesrice493 2 года назад

Thanks for the video. I need this but still not sure how to wire this up. I have an orange wire that was ran to W1 on my old thermostat and I’m thinking I wired it wrong since I have a heat pump. Does the orange wire need to goto OB spot? My outside unit is not kicking on and just blowing cold air for about 20 minutes and then my heat 2 kicks in and then I have heat. Any info would be much appreciated. TIA!!

@dalton3852 4 года назад

This is awesome! Only one question- if I have emergency heat and I had two O/B wires (not the common wire), which one goes to the star and which goes to O/B

@lofeguy 3 года назад

I know I wish he talked about the colors

@Deepsouthfishing 3 года назад

@@lofeguy he talked more about the colors in another video

@DarkKnight-ym6nc 2 года назад

Thanks for the explanation, just so I’m clear, does the E wire go to the * and not the AUX of the Nest Learning Thermostat?

@Fab84NL Год назад

Great video!! I was strugling to find If I could use the nest thermostat (Gen 3) for my Mitsubishi Ecodan Heat pump (with heating and cooling) but now Think it should be possible!

@durkemauldin9248 4 года назад

Wow great video. Its the first video I have found that actually explains how the wires work before you hook them up in a way anyone can understand. I will be buying a nest thermostat soon and I have always wondered why I have only one red wire but a RC and a RH connection. Makes a lot of sense now that you have explained it. I have a question, I assume the W1 and W2 are probably interchangeable as well is that correct? This is my color scheme, I have a Yellow, Red, Orange, White, Green and Blue. I have a tan also but I believe that's for some kind of remote temperature sensor not sure. But anyway that's for the great video.

@matthewstanley3562 4 года назад

My current setup is a Lennox thermostat, and it has a wire going to W1. I’m assuming that that W1 goes to the * on Nest? Thanks for the video! Lots of help.

@SeanMcDonnell33 Месяц назад

same question here. my old thermostat has a terminal labeled W1/E... trying to figure out where to put that wire on the new nest thermostat

@jonathan3518 2 года назад

Hey, want to use a nest to tie a gas fire place into my heat pump system. I’m assuming I would likely tie into Rh for a call for heat? That or can I use W2 and the blower in the heat pump as my supplemental heat?

@01redcrew 2 года назад

Have to done a video on a Honeywell smart thermostat with a heat pump? I got a t5 for Christmas so was looking around for videos to install. Thank you

@Kyle-od3lm Год назад

I have this similar set up, but also have a brown and a black wire that were not used on the old thermostat (no metal is exposed). Is it safe to assume they are just there and not set up to anything? Just have a heat pump with a coil compressor/fan - all electric. Thanks.

@unc84steve 2 года назад

I made the mistake of installing a Google Nest thermostat on a 110 degree Saturday afternoon. The old thermostat had a white wire going into a W1(O/B) position. I carelessly put this wire in the Nest's W1 position. The system started blowing hot air instead of cool air. The outside box was blowing cool air and I noticed that it said it was a heat pump. Another site said there could be a problem if we had a heat pump system. Upon further inspection, I saw that the label said "O/B". I switched the white wire into the O/B position and now the system in blowing cool air. Thank you very much!

@ryanmcauley4660 2 года назад

This is a GREAT video. I have a jumper Between w2 and my E wire. Can I keep that jumper wire and be successful in my Nest install?

@petebarber8542 2 года назад

HI: I've enjoyed your videos, but haven't quite found what I need. I'm trying to replace an old Evcon 3600-367P with a NEST thermostat. The NEXT has Y, C, W on one side and G, R, OB* on the other side of the backplate. Can you tell me which wires should go into these terminals as the orig stat has O (orange), W2 (white), L(blue), X(black), Y(yellow), E(brown), G(green)... many thanks... Pete

@juanalmeida5139 3 года назад

Hi How can i connect my boiler( 2 wire) and my Hvac system ( furnace) to my same nest pro thermostat since ill have to sources of heat but i would like to set the heat from furnace to 2 stage. Need help . Thanks.

@dannycalderon8516 2 года назад

Thank you for this video very informative. I do have a question (for all)that I've been searching all over the Internet and I cannot find. I have a old AC central air unit with ducking that I'm planning to upgrade later on to a heat pump. But I am in New Yor City, so I do have a boiler with circulating water. I would like to use the heat pump and when it gets colder use the boiler being that I have solar panels. But I cannot find anything that reflects that situation any info will help

@SachinMayi 3 года назад

Love your videos, thanks. I have a heat pump but my old wiring has two bridges, one from Rc to Rh and one from W to Y. I have the white wire going directly to Y before bridging to W and other than that I only have the orange wire going to O. So I am not sure how to reconfigure these bridges to the Nest?

@jackchen3109 3 года назад

The same wiring with me. G.O. RC jump to RH and W jump to Y. Did you know how to wiring now? Do I need C ?please help me

@karenbraga797 2 года назад

Hi, I have the exact same issue. Old system bridged Y to W. I tried connecting the Y only (and O, G, and Rh) on the Nest but only cooling works, not heat. Any suggestions much appreciated!

@arturorubio8127 3 года назад

do you have any experience using the NEST for fan and coil systems?

@jjlugnut Год назад

ROFL - The wife nice touch. Your reaction priceless!

@jimrozak2668 2 года назад

Great video. However, I did not hear you discuss how to connect a Nest Learning Thermostat (3rd Gen) when you have both a Blue and Orange wires coming from the furnace controller board since the Nest only has a single O/B connection. I tried connecting Orange to O/B and Blue to C, but it does not power the Nest. So what do you do?

@MS-qw3vp Месяц назад

Great Video. I watch both your regular HVAC and heatpump videos. I have anest learning thermostat (3rd Gen) for my heat pump (single stage) but looking to change it to 2 stage heat pump (Trane XR16) with a variable speed Air Handler (Trane TEM6) but wasn't sure if can still be used for efficient use of the Heat Pump/Air Handler. I love my Nest and don't want to change the thermostat (if I avoid it)

@hunterbrown910 3 года назад

Any tips on using a 2020 Nest Thermostat with a heat pump system with 2 zones and a damper?

@DonterioDons 3 года назад

I have a HVAC with heat pump I installed the nest thermostat 2020 version ,everything is connected as it should and it works, but Thermostat says unconfigured wires. What could be wrong ? I will appreciate any help thanks.

@danielhibbs5028 3 года назад

Ok so I am so confused, I have watched all the videos and none describe what I have. I have a AC/heatpump outside. But I also have a furnace downstairs that runs off oil. I only have 1 R wire on my old thermostat. I have Y O G R C W E Those are my old thermostat wiring. In the nest, do I hook the E to the star and the W to the W1 on the nest to still have both my heatpump and my furnace as emergency after if gets below 35 degrees outside? Because right now, my thermostat runs off heatpump 35 and up and the oil kicks on at 35 and below.

@dancampbell972 Год назад

good video -- wish you had one on Dual fuel -- Heat pump with Gas furnace as aux

@martinderome1142 4 года назад

I have a furnace (electrical), a heat pump and a humidifier. The R power connects to Rc or Rh? The white connects to W2 or W1?

@PeppyChimpers 3 года назад

Nest thermostat compatible with ac/ radiant heat boiler combo ? I have 5 wires going to old thermostat . I messed up and didn’t take a pic of old setup