2 Wire Thermostat Installation With Nest Thermostat 3rd Generation
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- čas přidán 16. 07. 2024
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In this video we teach you how to install a nest smart thermostat with only 2 wires. The Nest Gen 3 smart thermostat will typically work most heat only or boiler HVAC systems in 2 wire configurations without the addition of a common wire. Both the Nest E and the Nest Gen 3 do not require a common wire when installing the Nest Thermostat. However the 2020 version of the Nest Thermostat with a mirrored face does require a common wire or common wire transformer when it’s being installed in an existing 2 wire smart thermostat configuration.
In the video we replace and existing 2 wire thermostat with a new Nest 3rd Gen smart thermostat that allows you to remotely control your heating and cooling from your phone. The Nest Gen 3 is also a smart learning thermostat that can automatically schedule heating and cooling based on learning your daily routine. The Nest smart thermostat is also designed to help you save energy and can help you make you more comfortable by offering easy adjustment.
The Nest Thermostat 3rd Generation is one of the few smart thermostats that will work with 2 wire heating or 2 wire boiler systems without the need for additional wiring or a common wire in most cases. To install the Nest Thermostat 3rd Generation with 2 wires you remove the existing thermostat and install the new Nest Thermostat in it's place using the existing wiring.
The Nest Thermostat 3rd Generation is also compatible with room temperature sensors: amzn.to/2X6c5Yr which can be used to better control the temperature throughout your home.
How To Use Nest Thermostat: • Nest Thermostat Manual...
How To Install A Common Wire: • How To Install A Commo...
How To Install A Common Wire With New Nest Thermostat: • 2020 Nest Thermostat C...
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Thank you so much for this video. I am a 67 year old woman & was able to take off my old thermostat & install the new Nest Thermostat all by myself! Your detailed instructions were very helpful. I had no problems because you explained everything slowly & precisely. I appreciated that. Sometimes people talk too fast in these self help videos which make them difficult to follow even when you pause it.
Fantastic mixture of brevity but conciseness; perfect on the subject. Thanks.
Thank you for this informative video and detailed instructions! My thermostat is exactly like this, 2 solid low voltage wires and I bought a Honeywell lyric and realized it required a c-wire, so I had to return that and I’ve been stuck using my old thermostat and it’s annoying when the house is too hot at night and you gotta get out of bed haha. Going to get a Nest 3rd gen now and very excited, hope it works just like your video!
Great video!I’m a certified HVAC technician, one thing I have to note is yes it doesn’t need a common wire, but if something were to happen and it the heat source shuts off or goes into a lockout for more than 3hrs the thermostat will die. So a common wire is important and it is recommended if possible.
Then you would of realized the genius turns the power off of a system with AC but shows a stat with heat only. Did you see the AC coil on top of furnace when he shuts off power??? 😂😂😂
@@johnriley1660 You missed the point entirely. The power source for the thermostat is coming from the boiler, which in-turn trickle charges the stat's battery. If the boiler malfunctions for whatever reason, the thermostat will eventually lose power too.
@@thenullco it will lose power when batteries are drained, right?
@@wittttttt Yes. 👍🏻
YOU JUST SAVED ME LIKE $300 !! Thanks you!!
Great video buddy... Very clear and well made!
Thanks again for the video, I wish I reviewed this video first before I purchased google nest 2020 model and wasted all the time for installation.
Definitivamente se ganó mi admiración, mi agradecimiento es un video increíble.
Thank you, this was really helpful installing my two-wire HVAC heating system to the Google Nest\ 3rd Gen.
thanks..very helpful! I will be buying a nest gen 3! perfect.
Best you tube Video Exactly matched the heating system and existing thermostat in my home. Step by step Instructions helped me install and set up my Google Nest Thermostat.
Great. I never had nest thermostat and one thing I don't understand. How the nest unit gets power for unit to work? Do you have to recharge it every now and then or it gets power from these 2 wires?
Can you use your A/C?
I just installed the first of four of these Nest thermostats. I am replacing old Honeywell T87F thermostats that have one red and one white wire - no C wires. Attempted to install the 2nd Nest, but it did not work because the boiler was not able to provide enough power to support it. It was turning the boiler off and on repeatedly. If you have more than one zone on your heat only furnace or boiler, then you will need to purchase a Nest Power Connector for each Nest thermostat installed. Also, the Nest app can be a PIA getting paired with the thermostat. It took a few attempts to make it work. But, the first one is working great, as is the app.
Where was this video a week ago? I just returned a Nest thermostat because I only have a 2 wire set up, and it said not compatible....ugh... Looks like I gotta buy another one.
Thanks for the video!
The nest e worked perfect for my two wire system. Thank you for this video.
Glad to hear! Thanks for watching and the comment!
Thank you!! You are a lifesaver.
Great informative video Sir, thank you! Well explained and easy to understand. I have an old Honeywell Thermostat on my boiler radiator heating only system that seems to be buggy, so I'm considering the nest.
Came here from your other video!... thank you!!
Great vid, straight forward and simple! Whats the story with the battery? Does it have an on-board lithium battery that doesn't require charging? Any idea how long it lasts? Thanks!!
I work for a smart home company and installed at least +100 of nest thermostats. The new recent nest (and some earlier depending on home) thermostats are such a let down bc a lot of customers are ordering them for the lower price and are let down when I explain to them that their system needs a common wire. Not a big deal when I can run a wire or steal a G wire to make it work. But a lot of homes I run into have thermostats located in the worst locations and sometimes can not even use a plug in transformer due to outlet location/aesthetics. I wish nest would just design a thermostat that can run off a good charge. Like imagine if they developed a battery like RING but more compact that can run a system for several months out of the year. That would be nice 👍🏽
@Sambo Jones Sambo the G wire he is talking about stands for the fan, it is not a ground wire. Low voltage is not grounded at the thermostat or doorbell. I found this out today trying to install my gen 3 with only 2 wires.
Hope this helps you out Sir.
I just picked up one of the $129 Nest thermostats and have run into the c-wire issue. My boiler control panel has no clear C for the adaptor Google makes, I’ve tried hooking it up into just about everything on there to no avail. About to use my voltmeter to see if there is a 24V connection to jump on. Or the plug in transformer is where I will go.
@@dayinnymtb baseboard/radiator for heat I’m assuming? And is that zone where you are placing the thermostat heat only? Unfortunately you can’t use a plug in transformer with the Google “snow” thermostat. Your best bet is returning it and purchasing a nest learning thermostat ($249). Will work fine off heat only systems like yours.
I have a solution if you are still in this line of work
@@NYEK_GTR_ I ended up getting it to work, for whatever reason resetting the thermostat got it to finally register that it was receiving 24V off the adaptor. Was just a bit of a head scratcher because I was sure that I had it hooked up properly and it should’ve been working - turns out I was right 😂
Your channel is amazing. Thanks dude.
Thanks so much for this info!
Great Video, thanks.
I have a Buderus gas boiler with radiant heat. Like the video, I have two wires, red and white. Looking at the control board, I only notice a small elongated cylindrical ceramic fuse that displays 1.25 AV. I also have a Becket AquaSmart 5600B Controller (this control box has cover) and a Taco and SR503 3 Way Zone Switching Relay (this also has a cover on the box). I’m not sure if there are more fuses in those boxes. I ordered a Google Nest thermostat, at a huge discount, from my utility provider. Trying to install it, the Google tutorial said that I would need to add a Google Nest Power Connector - basically what they’re saying is that I need a C wire. Since that time, I figured I had just ended up with a fancy looking paperweight. No use sending it back as it would cost me nearly as much in postage. This video has given me hope, that is, if I can somehow thread the transformer wires down the wall on the first floor to an electrical outlet in the basement. If so, my question is, how do you avoid blowing any fuse? Is it basically adding the thermostat and wire connections with the boiler system turned off and then turning back on? Or is it a case that the fuse may blow whether you turn off the boiler system or not? Any ideas?
Thanks for the video. We have the exact same heating system. Everything works exact the way it should be. However I wasn’t able to use Alexa to shut it down but I can ask alexa to turn in on. Do you know why that is ?
the new place i am moving into has only 2 wire for the thermostat so this video was super helpful to give me an idea on how to install it! however does that mean that these systems are heating only and there's no air conditioning? i thought there would be air conditioning included in the same unit.
Wow great 👍
Great video! How would I wire a 2 wire fireplace on the Google faceplate?
this very helpful, thank you. does the model T3007ES 3rd gen is the right unit?
Is there a number of zones we can put on each tstat ? So we dont over load the system or incase the tstat cant handle it? Thanks in advance
Great video ! also since there is no C wire how the thermostat will power up itself ? If it's AAA powered how long will last when is connected to wifi ?
So this works well for a heating only system? I have very old wiring red white and green but my green doesn’t work.
👍 super helpful thanx!
Glad to help! Thanks for watching.
great video but won't the Nest rechargeable battery die with just the two (red & white) wires?
My 2 wires currently go to R and E. Will this work with E wire?
I have a Rinnai combi boiler heat only
I have forced hot water heat
Will this work in forced hw baseboard heat?
I just installed this with your video. My only issue is that it seems like my boiler is not turning off when i turn off the nest it would just keep running. I had to remove the nest device for the boiler to turn off. Any help with this would be nice I google and seems like I can't find the correct information on why i have this issue. I do have a 2 wire system only. Thank you.
Can you use Gen 2? As I still have that from my old house.
*Alaska here. We have a forced air gas burning Furnace with two wires* would work fine? Thank you!
I have gas heat. I have a blue, white and red wire. Where do I place these wires for the nest learning thermostat
Just go ahead and... go ahead.
I charged my nest thermostat overnight and I only two wires, red and white.
Gas furnace, baseboard heat is what I have.
No issues so far.
so I have a Mitsubishi electric panel w/ just red and white wires -- but it does full ac + heat -- etc. If I hook up a nest --will I have full functionality? My guess is that they're using some sort of proprietary bypass.
Is that thermostat will require batteries ???
How they charge the nest
Will this work for a 2 wire pellet stove?
Thanks for the video. I tried this with a old school 2 wire thermo connected to a fireplace. It didn't work, the Nest didn't power up. Any suggestions? Thank you
You're fireplace thermostat is probably millivolts. Furnaces and boilers generally use 24 volts. Honeywell may make a wifi thermostat that works with millivolts
Haha, I did this a few days ago before watching this video. I have a heat-only system with the 2 wires and my Nest 3rd Gen Learning Thermostats and Thermostat E work and charge fine. One of the Learning thermostats had low battery and I was worried it wouldn't charge. But woke up the next day and "Low Battery" message was gone. Didn't have any pulsing problem either (whew).
Super helpful thanks!
I have the cheaper thermostat and got the pulsing without a c wire. I wonder how your device is getting power. Does it come from the red wire or from the usb charging.
@@suzanneseale9543 yes, from the wire.
Do they call this power robbing? Wonder if it ever causes a problem. Google has stopped with their Nest systems. I wonder what's next. Maybe something with a really good battery.@@LinhNguyen101010
How they charge which wire
I have the Gen3, I have a new Reznor heater in my shop with 2 wires. I followed the video to the letter. No joy.
When calling for heat the combustion fan comes on, the burner comes on but when the blower fan comes on the burner shuts off then the blower fan shuts off then it attempts to cycle again.
Any ideas ??
Can I control humidity with this set up?
When I turn my furnace off it stops blowing heat but the blower will not shut off.
Havinng to ditch my nest because adding AC and only have a 2 wire, the alternative is a bunch of drywall repair since my current run is pretty far and everything is finished. Wish Nest had more accessories to work in these situations like Honeywell does.
Can't pull the new wire with the old one? Tape the new wire to the old one and use it to pull the new wire thru.
@@jasoncraig4683 no, some idiot thought it would be a good idea to wrap the old wire around some nails. My plan is to eventually remodel and find a new place for the thermostat. The current wire path is pretty absurd. I bought at the height of the buying spree in 21 but did not pay over appraisal which means I got the house nobody wanted to deal with lol.
Oh shit. Mine was the same way! I went to pull the new wire and the old wouldn't move. Went up in the attic and thats what I found,someone bent nails over in the studs halfway to pen the wire down. Luckily mine was only a 40ft run and it was a cinch to pull.
@@jasoncraig4683 yeah must have been a popular method back in the day, is your’s a 70s era home?
Kind of... Its an old Victorian and they came in 64 and chopped the 2nd story off and remodeled it. So yea,close enough. lol
Mine must be holder I see 2 wired 1 is W and the other is H not RH does that matter ??
I have an R and C wire, will this still work?
I have a 3 wire and after connecting red wire i get the message no power to RH and is not letting change the equipment type if i connect the C wire it says no power to common wire
You said this will work on a heating only system what if the heating system also has air-conditioning? Will AC work?
Dude, I wish my install was this easy. I have a W and R. Can’t get power from my Rh. Thermostat directly controls a propane fireplace insert. Last thermostat couldn’t control it either this season. Been troubleshooting for days.
Since I keep getting likes on this post…I figured it out (with the help of the internet of course). You need to get a 24v wall outlet adapter as well as a relay for your fireplace. Works like a damn charm. If y’all have any questions, hit me up on IG and I’ll do everything I can to help you out. It was super easy once I figured it all out.
@@paulknakk1715 glad you got it working. I just got one of these but haven't hooked it up yet. I'm going to use it to control one zone of my 3-zone hor water system. The thermostat for each zone goes to its own relay box that turns on the zone circulator and sends a call for heat to the boiler. Wish me luck!
it will charge battery with only two wires? anyone know? my furnace start making weird sound after I did this after 2-3 days
Just for clarification the two wire system ONLY works for heating, right? If there is central ac, this won’t work, right?
Do you still need help it’s possible and very easy I do HVAC go a living lmk u need help
Ron did you ever find out?
Does this have a built in temperature sensor or do I need to buy a sensor as well?
It’s built in and you can buy additional sensors for other rooms as well.
Mine does not work it says needs power wire
Do you have a video on a 3 wire system. My older Honeywell Magicstat has 3 wires. I have heat and AC controlled by it. I have a red wire going to Rc, a white wire going to W, and a blue wire going to Y. Is there a video covering that or can you tell me if the NEST will work without additional wires. Thank you.
Yes it will work John go for it.
what about the RC wire that was jumped from the RH?
Nest has jumpers built in. Doesn’t require it.
I have a 2 wire heating and A/C unit
I have old fashioned round dial.
I bought the gen 3 but it does not turn both units on or off like my old one did
Any tips on fixing this ??
Any replies for this question available?
Having a 2-Wire Honeywell Thermostat and planning to change it to Nest Learning Thermostat. Since there are only W and R wires connected on the Honeywell (there are other wires not connected), does it mean the new Nest Learning will only do heating not cooling?
Here for the answer to this as well
Did you ever find out?
@@meg3531did you ever find out?
@@Youngandsuccessful33 I only used the two wires, they control the fan and hvac (cooling and heating).
@@christinez-z786you are awesome! Thank you!
My two wire coming from a gas fireplace insert keeps saying no power detected in Rh. I may have to put the old box on while I try to figure this out. Driving me crazy.
You may need to run 24V power to the red and white thermostat wire using a doorbell AC adapter. ($8 at Home Depot)
How do I know what language to choose
Does anyone could this 2-wire Nest thermostat control the furnace fan only? I have 2-stage heating only furnace
This is what I'm looking for. Our previous programmable thermostat worked the fan only in summer if needed...all on a two wire system. The heat is from a Lennox gas furnace.
How long is battery life on that model?
The 2020 nest can be bypassed for 2 wire and run but it severely reduces its battery life
Two wires will keep it fully charged as the red wire RC or RH will keep the battery at 100%.
Will this work on a wall heater with the r n w wires???
U need a relay etc to make it work with a wall furnace because wall furnace uses a Millivolt tstat unless you have a wall furnace with the blower fan up top
Why current thermostat needs batteries and this nest runs without? Where does it gets the power?
Is this nest work without batteries?
And what’s comon wires do ?
Common is constant 24v basically the furnace powers the thermostat as opposed to batteries
Been battling with mine, trying to figure out my N73 error (No Power to W1), its a two wire install, wires are in RH and W1, heat is on, but only runs at full tilt and won't turn off even if exceeding set temps. So confused.
Ever find a solution?
@@marlonismarlon23 Yeah, I ended up having to use an adapter I picked up on amazon that gave me another positive and negative. Ran my on demand boilers white to W, red to RH, Positive from the adapter to RC and negative to C.
If you need a link to the adapter, just lemme know I can get it for ya, or the name of the product to search up.
I want to know how long can the battery be used without charging too.
About a week
The red wire “RH” or “RC” provides power.
Keeps blowing the fuse in my modine unit
Mine doesn't work
red wire to rh , white wire w1
Is there a 2 wire system that uses Apple HomeKit?
Not yet
I have a 2-wire boiler, a Triangle Tube Prestige Solo 110. It is a 2-wire dry t-t system. Will this install work for this boiler setup? Thanks.
Smart thermostats don’t usually work with high voltage thermostats. I would contacts Nest/Google for more info though.
Could this work without the WIFI hookup
No
Is this programmable?
Yes, you can program a schedule. This video shows you how to program a schedule and a lot of the things you can do with the Nest Thermostat: czcams.com/video/ZPQHvpnsnpU/video.html
If you don’t use the common wire then how does it charge the rechargeable battery in the system ?
It doesn't! It will constantly disconnect and report a low power warning. Major flaw in the system that they don't mention...
Is the 3erd gen the same as ‘nest learning thermostat - 3erd gen”?
I need the 2 wire one, made the mistake of buying the newest one... I don’t see one called “nest 3erd gen”.
This is the one you want: amzn.to/3tEJmIN it can work with 2 wires in many cases and does not typically require a common wire.
How long does the battery last?
Lastima que a la fuerza te quieren vender la bocina
How do you manage to take 7
to say switch it off. Blimmy
Avoid Nest, garbage defective product😊
That's totally wrong for the European version, what a shame don't put that this videos is only for US version on the title and for don't have the European version video.
Look at this guys baby soft hands. Don’t trust anyone like this for installation advice. You can trust him on programming. That’s about it. I’m pretty sure he installed that thermostat that is way off level. Hahah. Stay in your lane Sir. Or get your weight up an learn what it takes to create please.
Why is there no heat link, i have a two tire old thermostat looking at doing this but told you need to use heat link?
Have you been able to figure out the answer? I also read that heat link is needed and was wondering why it is missing in the video. Can we install it without t heat link?