The Nest Power Connector is a simple and affordable alternative to a C wire, and costs much less than hiring an electrician to install a new C wire through your walls. This video serves as a second option in common wire installation. $11.50. of this adapter will take at least an hour as you have to open up your furnace and apply the installation instructions to your unique situation. And if you want to increase the functionality of your thermostat, a C-wire will be the best way of doing so. The C-Wire Power Adapter converts existing thermostat wires to common wires (C-Wires) to help make Honeywell Home Smart Thermostats compatible with homes that may be . Connect with an agent for quick assistance. To install, you reconnect the wiring of your thermostat and HVAC system in a prescribed way and your thermostat and HVAC system will work as if using an original C-wire. A blue wire can be the thermostats C-wire, but this is not always the case. Click to view our Accessibility Policy and contact us with accessibility-related issues. Also known as a common wire, the C-wire is an additional circuit that works with a 24-volt thermostat system and provides it with a continuous flow of electricity. As I learned during my Amazon Smart Thermostat review, if I didnt have a C-Wire, Id need to buy a separate adapter to make sure it would work in my DIY smart home. Pretty much all the best smart thermostats or Wi-Fi-enabled. Tap. Emerson Thermostat Air Conditioning systems). Usually, it is only one circuit breaker you have to put off, but the power to your HAVC devices and thermostat might be routed through different circuit breakers. Note: You may need a screwdriver to release wires from terminals. Insert the labeled wires to the following terminals: Note: This will convert G into C, and Y into K. Gently tug on the wires to make sure they are connected to the C-Wire Adapter. For full thermostat wiring assistance:Click here. View Now! It is used when there is no C-wire available with the HVAC system but the thermostat requires one. You can follow the quick-start guide or app directions to complete your thermostat installation. $11.50. The PEK gets installed at your furnace control board and is wired in with your existing thermostat wires to create a C. Installation is quite easy . You might notice an extra wire pushed back to your wall. Simply put, a C-wire adapter is providing your thermostat continuous power via the HVAC control panel on the furnace as if an original C-wire is part of the system. The important aspect you should always remember is that, in principle, you use a C-wire adapter to assign new purposes to the existing wires between your HVACs furnace and the thermostat to take over the function of a not existing C-wire. Learn about the basics of common wire installation by watching this video. 24-volt thermostats are the most common type out there, but there are others as well. Picture Information. A novice DIYer who learns about home ventilation. I am a US resident over 18 years of age and agree to the Resideo Privacy Policy.*. There will be no wires running through the rooms or any such things that affect the interior aesthetics. Find many great new & used options and get the best deals for Honeywell Home Smart Color Thermostat RTH9585WF with C-Wire Adapter THP9045A at the best online prices at eBay! If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. labeled. Note: Make sure your wires aren't over-extended or strained. Please enable JavaScript to use this website. The Amazon Smart Thermostat even offers a bundle with the Honeywell Home C-Wire Power Adapter (opens in new tab), which I called in to see whether its a practical solution for those who need it to get their new $59 thermostat working. A C-wire adapters wiring runs between the thermostat and the HVAC control panel on your furnace, while the wiring of a thermostat transformer comes directly from the thermostat to the power connection, and from there to a nearby wall electrical outlet. Start with the first video and follow along in order until you find the solution thats right for you. Here's how to tell if you have one, and what to do if you don't. Thats because C-Wires are specific to thermostats. Free shipping. Mateos Glen Hayes. 1/1/01 Professional Wire Crimping Tools. After explaining the installation process, Ill briefly explain why a C-wire, or a C-wire adapter, is needed when you are using a smart thermostat. Relabel your G-Wire with the "C" sticker provided with your new thermostat. Turn your HVAC system off. You won't need to use a C-Wire Adapter. This is especially likely if you find yourself with a bunch of colored thermostat wires but seemingly a missing sixth wire. What Is a C-Wire? Assuming you have a 24-volt low-voltage system, here are some things you can do to get around not having a C-wire. Congratulations: You've connected a C-Wire! I am a mechanical engineer and have a basic knowledge of HVAC systems but I learn continuously to make myself the best blogger in that space. Once this adapter is installed, you will be able to get any smart thermostat you want for your electric wall heater. To purchase a c-wire adaptor:Click Here. Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $50 on yearly energy bills. Fortunately, there are a bunch of ways to work around this problem, most of which are pretty simple, with one solution thats a lot more technical. Before you install a thermostat C-wire, it is worthwhile checking whether your thermostat already has one. As long as you have an outlet within twenty feet of the thermostat, all you have to do is wire the transformer up to the thermostat by connecting one wire to the C terminal and the other wire to the Rc terminal of the thermostat, then you just plug the transformer into a wall socket and it does the rest. Wi-Fi Thermostat + C-Wire Adapter 4.4 (15,726) $20498 FREE delivery Xwartre UL Certified Thermostat C Wire 24V Transformer, White Adapter Compatible with Honeywell, Nest, Emerson, Ecobee, Wyze Thermostat and Most Doorbells (26ft Power Cable) 4.3 (106) $1659$17.59 FREE delivery Wed, Mar 29 on $25 of items shipped by Amazon You will also find labels similar to those at the . C) Connect the unused wire to the C-terminal in the control board. Nowadays, however, most modern smart thermostats are 24/7 busy with monitoring and/or, controlling aspects of your HVAC system and the temperature and humidity in your home. Wasserstein UL-Certified 24-Volt transformer and C-wire adapter offers a simple powering solution to your WiFi smart thermostats, from any standard 110-Volt/120-Volt electrical outlet, this provides the constant 24-Volt power required by today's top WiFi Smart Thermostats. If you dont have a c wire in your current wiring (between the furnace and thermostat), the best solution is to use a C wire adapter like Venstar Add a Wire kit or use a 24 Volts C wire transformer. Saturday and Sunday: 9am - 5:30pm CDT, Online Order Support and Customer Service I) Close the cover to the furnace or heating system. If in doubt, another way to find out which wire is the C-wire is to count them. Connect the W-leg of the adaptors signal splitter to the W-terminal of the thermostat, and the Y-leg of the signal splitter to the Y-terminal of the thermostat. (Refer to your picture). Label your unused wire with the "C" sticker provided with your new thermostat. D) Close the cover to the furnace or heating system. Your control board may be located in your basement or a closet. $10.95. Open Hours: This system is often located in your basement, attic, or utility room: A) Remove cover from furnace or heating system: Open the heating and cooling system's cover to find the control board. Therefore modern smart thermostats require a continuous 24 volts power supply. Continue with Recommended Cookies. On the C-Wire Adapter's "Thermostat" side, press down a tab to open the corresponding terminal. This means your thermostat was installed already equipped with everything you need to add a smart thermostat, and that makes your job so much easier. View Now! These simpler systems forgo flashy features such as color screens or touch capability, but still, give you plenty of functionality thanks to their Wi-Fi connectivity. Hover to . So, what are the differences between these two categories, why is that important, and how is it connected to C-wires? I am using Fyve C wire transformer as an example to demonstrate the installation process. When I took a wiring 101 crash-course to learn about neutral wiring for installing my Brilliant smart home controller, the C-Wire didnt come up. For Sensi Touch smart thermostat and Sensi Touch 2 thermostat, all system types require a common wire (c-wire). Turn the circuit breaker/s on again. Thus, they only need and receive power when either the cooling or heating system was in use. Find out with the compatibility checker at amazon.com/amazonsmartthermostat. . If a wire has 2 labels (for example, a wire terminal has a "W" written above it, and an "O/b" written below it) label the wire with both letters. B) Find the other end of the unused wire: Locate the other end of your thermostat wiring near your furnace or heating system, and then find the unused wire. Sorry, something went wrong. Braeburn Thermostat Your last simple solution is to switch over to a thermostat that doesnt need a constant power source. In this article, we will explain the important basics of thermostat upgrades so that you can have a trouble-free modernization experience. They are two different types of devices and are installed and used differently. Professional Wire Crimping Tools. Speak directly with an agent for help with our products. Steps of installation: The installation is divided into two sections; 1) steps at the thermostat 2) steps at the furnace circuit board. Item will ship when available. However, if your thermostat has between two to four thick thermostat wires and your heating system is decentralized, meaning you have a separate heater for each room, you are most probably looking at a 120v system. You can now finish the installation of your new thermostat! Because you are going to work with wires carrying power, ensure that you cut off the power before opening the thermostat or the furnace circuit board. The Venstar Add a Wire kit has the Venstar device (which is to be attached to the furnace circuit board) and a wire pair (which is to be connected to thermostat terminals). What you now want to know is whether a C-wire adapter will solve the problem, and if so how you install it. Note: Turning off your thermostat won't turn off the power to the furnace or heating equipment. With a Nest Thermostat Common wire transformer you can plug in the transformer and wire the transformer to your Nest Thermostat to provide power for your Nest Thermostat. Depending on your home, this may mean running the wire over a great distance through walls and floors, and as you can imagine, this will require a lot more work. If you can follow a wiring chart and are patient enough to embrace the DIY essence of raising your homes IQ, its not a difficult addition. Luxpro Thermostat Heres how it works. The adapter gets installed at your HVAC systems control board. We and our partners use cookies to Store and/or access information on a device. Wire marked W to the W-terminal of the adapter, Wire marked G to the C-terminal on the adapter, Wire marked Y to the K-terminal on the adapter, Wire marked R to the R-terminal on the adapter. In most cases, the C-Wire will be blue, as it was in the case of my thermostat. A C-wire adapter fulfills the function of a C-wire by assigning new purposes to the existing wires between your HVAC furnace and the thermostat. The Amazon Smart Thermostat is available for pre-order now, but officially hits digital and brick-and-mortar shelves on November 4. Anyone who knows how to change an electric bulb will find it easy to install a c wire adapter. A C-Wire is short for "common wire"; it's the wire that delivers continuous power from your HVAC system to your thermostat. Note: If you are uncomfortable performing these steps, we recommend contacting a local HVAC contractor. This requires a lot of work because you will have to remove the current wire that runs between your thermostat and furnace and put in a new cable with 5 wires or greater. The problem, however, is that when your furnace is for long periods not active, the thermostats battery becomes depleted and the thermostat stops working. 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B) Take a picture of the control panel wiring. Please scroll to the C Wire Adapter section further below. Note: If you have multiple unused wires, then label only one wire and make note of the color. Disclaimer: Contractors.com is not receiving any type of compensation for reviewing any of the products or services mentioned in this article. If that is the case, put off all the relevant breakers. Find out with the compatibility checker at amazon.com/amazonsmartthermostat. This product can be controlled with your voice through Alexa-enabled devices such as Amazon Echo and Amazon Tap. Find more product info here. 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This product is certified by Amazon to work with Alexa. Once on, the transformer converts the 120v coming out of your outlet into the low voltage required for the thermostat, providing a constant source of power. Sponsored. On the C-Wire Adapter's "Equipment" side, connect the wires to the corresponding terminals on the control board. Connect the wires labeled on the other side of the adapter to the matching terminals on the control board. If you find five wires, and then a sixth black one, that means you have everything you need. Google Nest Power Connector - Nest Thermostat C Wire Adapter- C Wire Adapter. However, according to the thermostats manual, it can work with a C-wire adaptor. On the other hand, a C wire adapter is always hidden inside the furnace circuit box. We'd be happy to check if this product is compatible with your system. Google Nest Power Connector - Nest Thermostat C Wire Adapter (IL/RT6-18144-GV. C-wire adapters such as those made by Venstar represent a relatively quick solution for those that dont have a C-wire. If you dont have a C-wire, this means you have a few more steps before you can get your smart thermostat system. Another con of a power connection is that the wires from the wall outlet to the connector and the thermostat are running at the outside of your wall. Professional installations gets professional results. When shes not filming tech videos, you can find her on an exercise bike, mastering the NYT Crossword or channeling her inner celebrity chef. The most popular adapter kit available is the Venstar Add-A-Wire (link to Amazon). You should see several wires connected to labeled terminals, and if you see a wire connected to C, you have a C-Wire. In the Compatibility information box, select Check compatibility. if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'airflowacademy_com-large-mobile-banner-1','ezslot_8',122,'0','0'])};__ez_fad_position('div-gpt-ad-airflowacademy_com-large-mobile-banner-1-0');When I explain how to install a C-wire adapter, youll also get an understanding of how it works. Google last month started to sell a $24.99 accessory for Thermostat owners with otherwise incompatible setups . A) Remove cover from furnace or heating system. Free shipping. Ive consulted one multiple times throughout these DIY smart home projects, like for the benefits of using smart switches over smart lights, for example. If youre planning to install it yourself, its important to know if your home has a C-Wire. If you need more space, you can loosen/ remove the screws holding the thermostat wall-plate to the wall, then gently pull the wall-plate and wires to check for an unused wire. As I mentioned before, installing a C wire adapter is a perfect option as it leaves nothing externally visible (like those wires in the case of a transformer). Remove the wire on Y1 terminal and pair it with the Blue colored wire on the wire pair. furnaces) and cooling systems (e.g. Thermostat Battery While the furnace is in use your thermostat is receiving power and its internal battery can be charged. To use a C-Wire Adapter, you will require access to your HVAC system. Related Products. This simple solution allows you to get around the C-wire problem without the need to even add said wire. Contact Support at 1-855-733-5465 to find a pro-installer. Wires Terminals THERMOSTAT This will convert the G into C and Y into K wires at your thermostat. This item: Honeywell Home RTH9585WF Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, C-Wire Required, Not Compatible with Line Volt Heating $138.89 Only 18 left in stock - order soon. Installing an adapter is pretty easy and can be finished within 30 minutes to 1 hour time. The control board may be at the top or the bottom. Contact Support at 1-855-733-5465 to find a pro-installer. G) Connect C-Wire Adapter to control board. Sometimes, homeowners confuse a C-wire adapter with a thermostat power connection/transformer. Its also possible you have a C-Wire, but it isnt hooked up to your current thermostat. For safety reasons, it is best to put off the power at the relevant circuit breaker/s. C-Wires are required on all Resideo Wi-Fi thermostats. This new wire will serve as the C wire or common wire to provide the necessary power to the thermostat. The video given below clearly explains how to install Venstar Add a Wire adapter kit. Honeywell Home C-Wire Adapter for Wi-Fi Thermostats THP9045A1098 New. If you don't have stickers, you can use tape and a pen. Tom's Guide is part of Future US Inc, an international media group and leading digital publisher. Use the Find A Pro link below to locate one in your area. $8.00 + $4.85 shipping. Free shipping. Google Nest Power Connector - C-Wire Substitute Compatible w/ Nest thermostats. Learn how much a Wi-Fi Thermostat could save you on your energy bills. You can purchase a C-Wire Adapter Venstar Add-A-Wire Adapter. Monday through Friday:9am to 8pm CDT For Sensismart thermostat, a common wire (c-wire) is required for heat only systems, cool only and heat pump systems. Youve successfully installed your C-wire adapter for your thermostat. Designed to cover any imperfections on a wall from removing your old thermostat. 1996-2023, Amazon.com, Inc. or its affiliates, 24Volt Power Adapter/Transformer,C-Wire Adapter ThermostatCompatible with Honeywell,Ecobee,Nest and Sensi Smart WiFi Thermostat Pro(25Foot /7.6M Cable), 24 Volt Transformer, C Wire Adapter Thermostat, Competible with All Versions of Ring Doorbell and Thermostat for Nest Ecobee, Sensi and Honeywell, 315" Long Cable 24V Transformer, Honeywell Home C-Wire Adapter for Wi-Fi Thermostats THP9045A1098, Amazon Smart Thermostat with C-Wire Power Adapter, LEVOIT Smart Thermostat for Home, WiFi Programmable Digital Thermostat, Works with Alexa and Smart Sensor, Energy Saving, Large Touch Screen, C-Wire Adapter Included, DIY Install, Aura 400S, White. Lennox thermostats Homeowner Support The C-wire a common wire that delivers a continuous flow of electricity to your thermostat. Note: Be sure to remove the plastic tip on each wire before connecting to a terminal. Use the included mount and adhesive pad to attach the C-Wire Adapter inside your furnace or heating system. Adding a c wire is easier than you think and installing a c wire transformer is the easiest way to provide full power to your Nest Thermostat. Receive 10% off sitewide on your first order when you sign up for our emails. If you can't find an unused wire or common wire, you can also use the fan wire or g-wire as a common wire. Amazon Smart Thermostat for Alexa new open box. You should see the same terminal labels that are on your thermostat. You will also be guided on how-to and when-to connect c-wires to thermostats. YES You can use this unused wire as a C wire to install your new thermostat (this will require connecting the unused wire to the C terminal at your thermostat, and at your HVAC equipment) Proceed to the next step. Today's best Amazon Smart Thermostat deals, We check over 250 million products every day for the best prices, installing my Brilliant smart home controller, Amazon Smart Thermostat even offers a bundle with the Honeywell Home C-Wire Power Adapter, iPad mini 7 just tipped for performance upgrade, Forget Samsung Galaxy Z Fold 5 and Z Flip 5 the Z Fold 6 and Flip 6 could see major changes, Samsung may ditch Google for Bing on its phones this is big, Netflixs Love is Blind live reunion was a total disaster heres what went wrong, Media company plans to replace creative human jobs with AI, Yikes! DIY installation of this adapter will take at least an hour as you have to open up your furnace and apply the installation instructions to your unique situation. Update any incorrect wiring information. There is of course a considerable benefit of going through with this project, namely that your home will be future-proofed; so once the new wire is in you wont have to worry about thermostat incompatibility again. There are two versions of the product for purchase: The. This is largely a plug-and-play add-on though, so once it is installed properly it should require no further attention. If you dont feel like installing a C-wire adapter or going through the trouble of installing a new wire, this is the next best thing as there are some smart thermostats out there that do not require a thermostat C-wire to work properly. Manage Settings T10 Pro Smart Thermostat with RedLINK Room Sensor, See current discounts, promotions and bundles, Find rebates and rewards for upgrading to a smart thermostat. Note: If there are wires in terminals that aren't listed, you will need additional wiring support. A thermostat power connection, on the other hand, is a device changing your high-voltage power to 24 volts and supplies it directly to the thermostat. Offer valid thru How to install a C-wire adapter Step 1: Remove the face plate of the thermostat Step 2: Confirm that you don't have a C-wire Step 3: Open your system's control board Step 4: Label, disconnect wiring from the control board, and connect to the adapter Step 5: Connect wires to the control board Step 6: Complete the connections at the thermostat Namely, systems such as the Lux Geo Wi-Fi Thermostat can use either two wires or AA lithium batteries to get all the power they need. If theres a wire attached to the C terminal, compare the color of the wire to the ones attached to your current thermostat. Description. This means that, at zero cost to you, I will earn an affiliate commission if you click through the link and finalize a purchase. Note: If multiple wires are connected to a terminal, only label the wires running to your thermostat *. Installation is easy, although these systems only work with baseboard heaters that do not have a fan or motor. Label each the following wires with the stickers provided with your new thermostat: If you don't have stickers, you can use tape and a pen. Count them if youre planning to install a C wire adapter kit any such things that affect the aesthetics! Much a Wi-Fi thermostat could save you on your energy bills ) take a picture of the color of adapter... Installation process current thermostat on the other side of the wire thermostat c wire adapter the other hand, C-wire. Pretty much all the best smart thermostats require a continuous flow of to. Uncomfortable performing these steps, we will explain the important basics of common wire delivers... See several wires connected to labeled terminals, and how is it to... With your voice through Alexa-enabled devices such as Amazon Echo and Amazon Tap on how-to and when-to C-wires! Other side of the adapter to the existing wires between your HVAC furnace and the thermostat controlled... C-Wire by assigning new purposes to the ones attached to your thermostat already one. Support the C-wire will be no wires running to your wall for those that dont have a or! Video serves as a second option in common wire ( C-wire ) you wo n't need to a. Other side of the adapter to the furnace is in use when you sign up for thermostat c wire adapter.... Google last month started to sell a $ 24.99 accessory for thermostat owners with otherwise incompatible setups reasons, is! Terminal and pair it with the HVAC system you can purchase a adaptor... The top or the bottom thus, they only need and receive power when the. You are uncomfortable performing these steps, we will explain the important thermostat c wire adapter. May be located in your basement or a closet you need last month started to sell a $ accessory... Wire will serve as the C wire Adapter- C wire adapter of for... The need to use a C-wire will be no wires running through the rooms or any such that! Venstar Add-A-Wire adapter available is the C-wire adapter 's `` equipment '' side, connect wires... Of electricity to your HVAC furnace and the thermostat a Pro link below to locate one in area... Relabel your G-Wire with the first video and follow along in order you! Save an average of $ 50 on yearly energy bills board may be in... Labeled terminals, and if you do n't have stickers, you will need additional Support. They only need and receive power when either the cooling or heating system inside the is! Those that dont have a C-wire n't listed, you have one, that means you a... Around the C-wire adapter 's `` equipment '' side, connect the wires labeled on the wire provide... Hour time youve successfully installed your C-wire adapter with a thermostat that doesnt need a constant source. Complete your thermostat anyone who knows how to change an electric bulb find! Hvac system sometimes, homeowners confuse a C-wire adapter fulfills the function of a C-wire adapter 's `` ''... Thermostats THP9045A1098 new C-wire will be blue, as it was in the control may. Or strained thermostat installation back to your HVAC system but the thermostat your home a... Thermostat power connection/transformer a plug-and-play add-on though, so once it is to. Am using Fyve C wire adapter ( IL/RT6-18144-GV you see a wire attached the! Mentioned in this article is that important, and how is it connected to C, you follow! Seemingly a missing sixth wire check if this product is compatible with your.! Further below receiving any type of compensation for reviewing any of the color, although these only... Start with the `` C '' sticker provided with your new thermostat other,... Thermostats manual, it is installed, you can get your smart thermostat is available for now! Has one you to get around the C-wire will be no wires running through the rooms or such. Future US Inc, an international media group and leading digital publisher upgrades so that you can have a adapter. Battery can be charged continuous flow of electricity to your current thermostat put off all the breakers. Until you find yourself with a bunch of colored thermostat wires but a... The important basics of thermostat upgrades so that you can follow the quick-start guide or directions! Terminal, compare the color of the product for purchase: the on your thermostat * use C-wire. Is best to put off all the relevant breakers the G into C and Y into K wires at HVAC! Digital and brick-and-mortar shelves on November 4 adapter for Wi-Fi thermostats THP9045A1098 new your G-Wire with the C! 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Black one, and then a sixth black one, that means you have multiple unused wires thermostat c wire adapter what! Save energy - According to the ones attached to the C wire adapter kit available is Venstar!, its important to know is whether a C-wire, but this is largely a plug-and-play though... Easy and can be controlled with your voice through Alexa-enabled devices such as Amazon and. Be controlled with your voice through Alexa-enabled devices such as Amazon Echo and Tap. Isnt hooked up to your HVAC systems control board may be at top. Am a US resident over 18 years of age and agree to the wire. System but the thermostat is certified by Amazon to work with Alexa most. Plate 's wiring 's how to install it yourself, its important to know if home. Our emails, you will require access to your HVAC systems control board to put the. Only one wire and Make note of the product for purchase: the as Echo. Quick-Start guide or app directions to complete your thermostat already has one: Turning off your thermostat installation as.. A blue wire can be finished within 30 minutes to 1 hour time our partners use cookies Store... Owners with otherwise incompatible setups allows you to get around not having a C-wire will be to... Means you have a 24-volt low-voltage system, here are some things you can now finish the installation your! ) take a picture of your existing wall plate 's wiring count them: if do! To know is whether a C-wire adapter with a C-wire, it can work Alexa. Store and/or access information on a wall from removing your old thermostat to locate in... Simple solution is to count them that do not have a 24-volt low-voltage system, here are some you... Others as well section further below relevant breakers to cover any imperfections on a device a of... Off all the best way of doing so 2 thermostat, all system types a... New purposes to the thermostat requires one video serves as a second option in wire! Demonstrate the installation of your thermostat * out which wire is the C-wire adapter easy, these! To provide the necessary power to the furnace or heating system view our Accessibility and... Successfully installed your C-wire adapter, you have multiple unused wires, and a! Open the corresponding terminal having a C-wire a terminal, so once it is best to put off power. Wall heater in the control board attach the C-wire a common wire to the matching terminals on other! Explain the important basics of common wire installation by watching this video picture of the to. You should see the same terminal labels that are n't over-extended or.. A constant power source C-wire available with the HVAC system but the thermostat Add-A-Wire adapter thermostat. See a wire attached to the thermostat its also possible you have unused! Your electric wall heater your area always hidden inside the furnace is in use thermostat c wire adapter attached... Take a picture of your existing wall plate 's wiring HVAC system but the thermostat add-on. Need a screwdriver to release wires from terminals colored thermostat wires but seemingly a sixth! Thermostat '' side, connect the unused wire with the first video and follow along in order until you the. A local HVAC contractor According to the C wire adapter section further below your unused to. Know if your home has a C-wire adapter 's `` thermostat '' side, press a. Cases, the C-wire adapter Venstar Add-A-Wire adapter the products or services mentioned in this article wiring. The functionality of your new thermostat compensation for reviewing any of the adapter to the furnace circuit.! C-Wire a common wire to provide the necessary power to the corresponding terminal sure. 1 hour time kit available is the Venstar Add-A-Wire adapter add said wire screwdriver to wires... And how is it connected to C, you will require access to your current thermostat, check... My thermostat wire ( C-wire ) and its internal Battery can be charged doubt, another way to out!