Thanks from Australia. Exactly what I needed. Most of the vids emphasised the C wire without telling me where to connect the switch wires for a two-wire system. But you nailed it.

Thank you. Exactly what I needed to install my Honeywell T9 to my gas fireplace. After spending time looking at the wiring on my fireplace and searching the internet I came across your video which was exactly what I needed! Saved me a visit from my HVAC guy!

Thank you for this video. I struggled to power my ecobee until I came across your video which showed me how to provide power to the thermostat. I have a two wire (Red and White) thermostat connected to baseboard heating (zone valve.) Luckily, I have access to a 24v transformer near the boiler and a spare wire coming to thermostat. Here is how I wired my ecobee: 1. Connect spare wire to 24v transformer labeled “Load” 2. On the thermostat end, connect spare “Load” coming from 24v transformer to ecobee ‘Rc” 3. Connect “Red” wire to ecobee “Rh” 4. Connect “White” wire with a jumper wire to ecobee “C” and “W1”. Please note; if you follow “White” wire back to the boiler you’ll notice it is connected to 24v transformer labeled “C” which provides power to zoning valve by completing the circuit when connected together with “Red” wire. Here is my diagram: drive.google.com/file/d/1Yx79pAtcSoadQqdU5ahQ6bVnKpcVWkKA/view?usp=drivesdk drive.google.com/file/d/1EG9Mvh_5hMfv6a7IDKoE2CIxKBvIyc1V/view?usp=drivesdk Hope this schematic diagram helps anyone with similar problems.

Thank you, RR. I bought a wifi thermostat not knowing about the C-wire. I was about to throw in the towel when I discovered your video. You explained it to a 'T' and I had the unit installed and working in no time. I have liked and subscribed because I am sure I will see new videos that will be helpful to me. Thanks, again.

Thanks for the video, it took me 4 videos before I found yours which turned out to be the best and easiest to follow.

Very nice easy demo. I just purchased two of these Honeywell thermostats and this made it very easy to figure out how to install without a C wire... Thanks!

Finally after nearly a full day of trying different configurations you have helped me solve this problem. Thank you

I have been playing with this for 6 months +.This is it.You solved many peoples headach!!!Tom AndersonN.J.

Thank you so much! I have an old gas stove-style heater that doesn't have the terminals described for the adapter kits for the smart thermostat I bought without thinking about compatibility. I never had a thermostat that needed more than two wires before. This is exactly the solution I needed.

Thanks for the clear details and video. You really have no idea how many people you just helped with your efforts. Thanks again.

Finally a practical way to get past this without messing with the oil burner wiring. Perfect for my issue. Thanks so much for this.

Once again you have helped another person! I used an oil burner transformer in my boiler room and used the same steps. Fished a new line all the way downstairs. Worked like a charm. thank you so much. Worked with a Honeywell 9000.

thank you great video. I have been wanting to install a wifi thermostat for a while on my 2 wire hydronic system. this video showed me how to do it. got the transformer on amazon and my thermostat from home depot and i was ready to install them. install took about an hour. hardest part was fishing the transformer wire down from the thermostat wall hole to an outlet box in the wall behind the thermostat after my fish tape broke.

Thanks from New Mexico!!! You saved me because I didn't know this as being an alternative option. You rock!!!

Great video. Nice guy! I hate the idea of a huge transformer sticking out of the wall but I also hate not being able to use this damn Honeywell thermostat that I bought in ignorance. I’m going to do my best to get behind this wall and hide this transformer on the other side and feed the C wire through. I want to also thank you for taking the time and effort to do this video. I keep telling myself to start a channel but I’m too busy doing all this other stuff and learning from folks like you. So THANK YOU 🙏🏽

Thank you Very much for this video, I had asked some coworkers if they could help me with this problem and none made the time (my guess was they did not know how) Now I finally have my WiFi Thermostat connected!

Of all the videos I saw on this , this was the best one. good Job

Great job. When I remodeled the house I Ran a 5 wire cable for future upgrade but also left the two cable next to it and taped it off, now all I have to do is get a transformer and make good use of the two cables dangled in the basement. I'll just put an outlet in for the plug.

Definitely helped with the confusion of missing C wire. THANK YOU!!! Would you please mention the model of thermostat too. I have decided to get Honeywell (RTH6580WF), Requires C Wire, Works with Alexa - It better work with Alexa

Amazing video... thank you. I have a boiler with no C wire running to thermostat. Bought the Nest and did not realize the issue until I got home.. Initially I had set it up where the Nest was power stealing from my boiler, but issues started to arise when it got really cold, and the Nest started to power out (all functions would auto turn off to compensate for the fact that the boiler needed the to run more often). Anyway took your reco and took it a step further and bought a 24V transformer that I installed inside the wall from the nearest power outlet - brushed up on my dry walling skills. Works beautifully now.. Cheers!

I bought a 24 VAC 40VA trans. and still could not get my nest or Honeywell thermostat working and gave up on both a week ago, for some random reason your video came upon youtube and now the Honeywell works perfect, I can not thank you enough Liked and subscribed.

Thank you!!! This was so helpful and easy to follow.

Thank you I was having trouble with my new nest thermostat and I had an old thermostat (well only 2 wires)

Excellent video. Cleared up my questions. Thanks from Alberta, Canada.

Thank you. People like you make the internet rock!

Thanks, my Nest worked fine for 2 years with no C wire then all the sudden on one of the coldest days it reports an error that when I googled said it needs the C wire for power. This solution fixed my issue ordered the 24 Volt AC transformer from Amazon

You are the only video I could find that could easily explain what the C wire is for thank you so much

Thank you, thank you , Thank You! Exactly what I needed for my Lyric T5. Working with a gas fireplace perfectly.

Great video, it definitely helped me solving the missing C wire issue...Thank you

Your explanation and demonstrations was a pleasure. It’s was perfect for the old wiring in my home..Thanks so much... ;D

Thank you. Very simple and easy to follow.

This was a big help. I have a wall mounted gas heater, and this is perfect for what I need.

Thanks chief for the video greatly appreciated got a house from 1958 so I'll be able to punch out walls whatever I need to do the unit is from 1990 I'm going to try to just take two wires off the switch itself on the furnace because they give me 24 volts actually 29 volts but what the hell is the difference unless I can find 24 volts elsewhere all the time anyhow if that doesn't work I'll do your method I'll just plug it in the basement so you'll never know considering that where the blower motor is attached there is an open 3-prong so yeah this will work for me Good video I just subbed

You rock! Great fix for a 2 wire to wifi system. thank you!

Thanks for the help. It was hard to find a video on installing digital thermostat without c wire.

Thank you! Best tutorial yet. Easy and to the point

Nice video direct and to the point thanks!

Thank u, ur da best solved my problems!

Best explanation I've found. Thanks

Thank you for all those very usefull informations. I have followed them and VOILA!! it works great !!!! TANKS AGAIN.

Thank you, I understand how to do a C wire now.

Thank you for sharing this. It worked for me as well!

Your help is much appreciated

God bless you ... I understood it completely and I thank you for your video.

Thank you for this video, cuz I DID IT and I am amazed at myself to be honest. Thanks for helping me feel independent and that I can do it :)

This was very helpful thanks so much bro

This was so simple and quick.

Totally worth making! thank you

Worked great! Thanks for the help!

Best and simple video, after months of reseach I finally got it thank to you. If I connect a wifi thermostat to central ac, do i connect 1 wire to C terminal n the other to RH

Perfect. Thank you!

Great fix thanks for taking the time to post this solution

Thank you sir that was so helpful and simple

Yes,thank you!

It did help me. Thank you very much for posting this video.

Thanks so much for this video. It was extremely helpful. I now can control the heat settings in my cold shop from home. I now can come to a warm workshop. I would suggest an alternative for the adaptor if you know of one. This part was hard to find. I got lucky to find one on kijiji but had to drive an hour away and paid only $10 for this part. This video saved me on installation cost. I was able to follow your instructions to do this myself. No bad for a girl!

What is the maximum amp rating I can use for this method? The one in the video is 0.5 amp, but is there a maximum? Also, will this work with Honeywell lyric T5?

Awesome video - one of the best

thank you so much!!! just what i needed!!

My old thermostat wiring had no C-wire, only 4 wires: R, G, Y, W. The heater has 230/24V transformer with 24V Common wire grounded. I replaced the thermostat with a Nest smart one. Connected the Nest's C terminal to nearby 120V outlet's ground terminal, got 24VAC between R and C terminals. The Nest has been working without issues.

Thank you! Exactly what I need!

Thank you very much Brotha!! excellent explanation !! 😃✌️

very good demonstration...

Thank so much. The video was helpful to me 😎.

Running a 24V adapter tomorrow... plugging in the basement directly below

Hi! Great video! Where can I buy that transformer ?

You saved me a $100 service call, thank you

Huge help. Thanks!

Thanks for the video, I used it to connect my gas fireplace to a wi fi thermostat.

Thank you so much for this video, mystery solved!

thank you!

Very helpful. Thanks.

Nice simple solution

If I only have a heater, no cooling, should I bother hooking up a wire to the Rc connector? What is the purpose of connecting to the Rc connector? Thank you for this video, going to test this weekend!

Thank you so much. very helpful :)

Your awesome thank u so much I thought I was gonna have to return this cause I had no c wire and only had 2 wires

Hello - This was very helpful. Questions: Do I need to shut off the boiler before I attempt this?

Perfect, solve my problem with only having a two wire cable coming to the thermostat.

Thanks, this was very helpful

Nice job, thank you

I don't have a C wire and will be running one like you showed but I have a RH and RC wire attached in the RC and RH spot. Would I then connect one of the transfer wires with the wire already in the RC spot and the other in the C spot? I've been searching online and thankfully came across your video which is most close to my situation. I greatly appreciate any help you can offer 🙏

My thermostat has two wires and batteries. Brown for phase and blue for neutral. Can i do what you did in your video?

could someone provide a link to buy the honeywell 24v ac power transformer or another compatible one as this model is not being made anymore? Thanks!

Van I use this same hook up with a honeywell smart color thermostat with wi-fi connectivity?

I have a 24 volt transformer attached to the furnace. It is part of the control circuitry for the furnace. Can I piggy back on the 24 volt output and run cables to my wifi thermostat?

The C wire adapter that is already one wired unit are the 2 wire interchangeable when connecting to the new thermostat? I noticed the wire adapter 2 wires are not color coded at the connecting end. Tia

How much current does the thermostat draw from the power supply. I would like to try to use a micro 24vdc transformer.

my Nest doesn't have a Rc terminal. only R. It's a 2020 model. The only terminals in the Nest are Y, C, W, G, R, and OB*. which terminals should I use to hook up the red and white wires going to the furnace and the 2 wires coming from the transformer? Put one transformer wire into C and one into R (along with the red wire from the furnace)?

The ecobee comes with a Power Extender for the situations where there is no C wire. Anyone have any experience doing the Plug Hack you shown us on the Power Extender (PEK)? The benefit is that I have multiple heating zones, and if I can do this hack , not at each thermostat, but for all the heatzones in the basement it would be a neater option. Definitely no need to do any drywall repair either.. thoughts anyone?

What does the jumper wire do? Great video!!!

do i need to wire a receiver to the heat pump?

Hi I connected an emerson Sensi with a 24v transformer for like a month now with my boiler and the thermostat been working fine but I forgot to remove cut the in built jumper so should I cut it now or leave it

From the transformer does the hot wire go to C and neutral to RC? I assume it makes a difference. Excellent video by the way.

Thank you so much

Thank you for your video. I purchased the transformer and wired it similarly to your description. I have an older Honeywell thermostat that doesn't have the WiFi capability and was testing to see if the transformer and wiring you described would power up the old thermostat. It has a backup of 2 AA batteries. I took the batteries out to see if the new wiring would power up the thermostat. The only main difference to the wiring from the video and my thermostat is that there isn't a C slot but a G slot. I understand the G is interchangeable with the C. Correct? If not, please advise! Thank you. My intention is to buy an Ecobee SmartThermostat to replace the old Honeywell.

What wi fi thermostat do you recommend that I can use my phone/Tablet also thermostat is password protected that nobody can turn on furnace and jack up the temp, I can control it while I'm at work or out of town, as for C wire I have plain ol gas furnace nothing fancy it not central heating. Will it still require C wire? And the wi fi thermostat is in very budget friendly, don't need all the fancy bells and whistles I just want the thermostat that is password protected so no one can turn on furnace and jack up the temp and I can turn off furnace while I'm at work or out of town.

Does it matter which wire goes where on the transformer? Looked at close up pics of the Honeywell 32006131-001 and the terminals are not marked at all. Is it like a light bulb, meaning it will work either way?

Very helpful

Thanks, very helpful video. One question before i embark : I got a transformer from AGPTEK and its output wires are both black color, does the coloring or polarity matter which way i connect these to the thermostat ?

That set up will work with utica boiler?