Every automation that this device uses is currently the most updated robotics work. Cut … Take your pick of the best smart thermostats on the market today. I am switching to a new. Alternate wiring key (heat pump system only) Do not use K terminal. I just installed a wifi thermostat and wired it according to. If old thermostat has separate wires on AUX and E, place both wires into the E/AUX terminal. Show More. Ask Your Own HVAC Question. If you have a baseboard heating system, you’re in luck: Caleo by CaSA is a WiFi enabled thermostat [Amazon.com] designed for use with electric baseboard heaters. Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa $ 92.93 “Compatibility is Required” Works with virtually any system type except electric baseboards. You need to CAREFULLY, using a volt meter set on AC, measure the voltage between the R ( could be RC in some cases) wire and the C wire. For example, you can set first setti… I'm trying to install a new Honeywell RTH6500 thermostat on an old heat pump system that has regular plus emergency heat and the closest matching diagram says to put both the white "W2" wire and black "E" wire into the same port called Aux/E. You can control it from anywhere in the house or anywhere in the world. No AC in the house, just forced air heat. The Honeywell RTH6580WF is a good, simple, affordable WiFi thermostat. If you just have heating, you might find you use fewer wires than they assume you need to. C-Wires are required on all Honeywell Home / Resideo Wi-Fi thermostats. Unfortunately, there aren’t a ton of options for line voltage systems. My controller is a Taco 6 zone controller. Get it as soon as Wed, Jan 20. Honeywell RTH6580WF Smart Thermostat No Hub Required works with virtually any system; Intelligent alerts provide high- and low-temperature notifications and loss of connection to Wi-Fi network; Backlit; White; Warning: proposition 65 reasons:N/A. Also, you’ll need one for every line voltage heater you have, and chances are (if you have line voltage), you have a few heaters. The only catch is you have to already have a minimum of four wires present. Honeywell RTH6580WF1006 Thermostat, Off-white 3.8 out of 5 stars 77. Can I replace it with a Honeywell RTH6500 Wi-Fi thermostat. If you don’t have a C wire, try: • Looking for an unused wire that is pushed into the wall. The simplest way is to pop your thermostat off the wall and look at the wires behind it and where they are hooked up. It should be straightforward, though. A common wire (C-Wire) provides Wi-Fi thermostats continuous power by connecting it to a heating and cooling system (e.g. It was and with me. As an aside, a lot of manufacturers assume you have both heating and cooling. Specifications. A pair of needle nose pliers is helpful here, for straightening the conductors. In all cases, the best first step is to figure out what heating system you have and work from there: find out which manufacturers support your system and accessories. If old thermostat has wire on AUX with a jumper to E, place wire on E/AUX terminal. 99. It’s for those not ready or not willing to pay $200+ for a fully featured smart thermostat, but still want the convenience of controlling their home’s temperature through their phone. If you don’t see a wire you can identify as the C-wire, though, don’t despair yet – you may need to look behind your existing thermostat. Another successful preliminary thermostat that has achieved considerable positive attention from users is Honeywell RTH6580WF. Honeywell RTH6580WF Wi-Fi 7-Day Programmable Touch Screen Thermostat. 1 product rating - Honeywell RTH6580WF Wi-Fi 7-Day Programmable Touch Screen Thermostat. Time left 4d 9h left. Another option for line voltage systems: the Stelpro KI STZW402WB+. You might want to hire a professional to do the job. 3.2 out of 5 stars 84. 537 product ratings - Honeywell RTH6580WF Wi-Fi Smart Thermostat with "C" wire accessory - White. I have a York Diamond 90 furnace that uses Natural gas. However, it’s bulky and you’ll probably want to figure out a way to bury it in the wall. Many older mechanical or battery operated thermostats do not require a C wire. Adding a C-wire to 24VAC systems is what this thing exists for. See the Stelpro KI STZW402WB+ on Amazon.com. It’s also a fantastic thermostat besides all that. First, confirm that you have a 24v (low voltage) HVAC system by visiting our quick visual guide to thermostat types. Everything you need is here! If your current thermostat didn’t need a C-wire, it (or a wire that can be used as a C-wire) might be rolled up inside the wall. In addition, the 4-day program period allows you to set up four different temperature settings for each day. CDN$119.99. If after searching you realise that your system doesn’t include a “c” wire, they are still ways that you can install either the Lyric T5 or RTH6580WF successfully. You will need your system powered on to test. Best wifi thermostats for home no c wire Reviews :If you are reading this, then you already know about wifi thermostats for home no c wire is a great product for you, your family or any other person whom you are planning to buy. Our guide to low voltage, line voltage, and more, Ecobee SmartThermostat review: premium thermostat delivers comfort and convenience, Server outage? This is more likely to be true if you see all the other color wires present. It’s a wire that (if you have one) runs all the way from your furnace to your thermostat. or Best Offer . Connect the Wires. Honeywell TH2110D thermostat has no C wire. I installed a Honeywell RTH6580WF thermostat. Honeywell RTH6580WF allows to have different sets of temperatures each day of the week. The C-Wire, or “common wire” enables the continuous flow of 24 VAC power to the thermostat. T5+ Smart Thermostat with C-Wire Adapter ... adjust and program your RTH6580WF WiFi 7-Day Programmable Thermostat from your smartphone. Manufacturer Part Number: rth6580wf . Contractor's Assistant: Anything else we should know to help you best? Thermostatic Controls - Wiring a Honeywell RTHWF Thermostat - Hello. Don’t worry about price if you are looking for a wifi […] If you already have four wires and just need a fifth to be the C-wire, you’re a good candidate for a Venstar Add-a-Wire adapter. Share this conversation. Honeywell RTH9585WF1004/W Home Wi-Fi Smart Color Programmable Thermostat, Alexa Enabled, Pack of 1, Gray - System must contain a c-wire 4.3 out of 5 … Almost there scenario: you find three or four thinner multicolored wires. The Wi-Fi thermostat requires a C wire to operate. is that more smart thermostat manufacturers will cater to this large market! 00 $199.99 $199.99. 4.5 out of 5 stars 1,247. Before you take a look at the next video which explains how you can easily substitute the G wire for the C wire, please be aware this works best if you have a gas, propane or forced air conventional heating and cooling system. It’s small, easy to install, and ships with every ecobee from the ultra deluxe Alexa-built-right-in ecobee4 down to the “budget” option, the ecobee3 lite (which sacrifices nothing other than built-in Alexa and room sensors, which you can still buy and add later). I join. What is geofencing and how do smart thermostats use it? On the bright side, this option future-proofs your HVAC wiring and will let you choose basically any smart thermostat you want in the foreseeable future! Some people might be tempted to identify a “c” wire by its color but this can’t be done as a “c” wire can be any number of different colors- there is no standard color that installers use. The packaging on the RTH6500 says “C” wire accessory included. It’s IFTTT compatible and you control it via your computer or your smartphone by logging into Caleo’s web-based portal (not an app, just a website, but it’s a mobile friendly website). (There is some hope with an adapter, but don’t get too excited yet.). ... (RTH6580WF), Requires C Wire, Works with Alexa. Just because it's there don't assume it's real. C $51.37. A smart thermostat offers both…, WiFi-enabled thermostat reviews and comparisons. There’s a lot of variation among heating/cooling systems and chances are, your heating system is different than what is featured here. The C, or common, wire brings 24 VAC power to the thermostat. This is the nuclear option. 7-day, 4 periods per day, flexible programming lets you sync your comfort with your schedule. Then, come back here and follow along! Install a Nest thermostat at your own risk, Best WiFi-enabled Smart Thermostats of 2018 – Holiday Buyers Guide, Crunching the numbers: 3rd-party projects and alternative ways to analyze your Ecobee or Nest data, 6 reasons you might NOT save a bundle with a smart thermostat. Most, if not all, smart thermostat manufacturers have a help line you can call for personalized support, too, so give ’em a call if you’re truly stumped. Also, the Stelpro is a Z-Wave or ZigBee thermostat. Questions about the C-wire are by far the biggest drivers of traffic to this site, so I’ve written this article to help you understand what the C-wire is, help you find your system’s C-wire, and help you decide what thermostat to buy based on what wires you have and/or are willing to install. Connected to your home’s existing WiFi connection, this digital thermostat gives you remote access from any WiFi-enabled device. Vine Smart Wi-Fi Programmable Home Thermostat, 4th Gen, Compatible with Alexa. Comparison: Emerson Sensi ST55 vs. Honeywell Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), No C-wire? Download the free app to your smartphone or tablet for virtual access to your thermostat. W wire from the controller to the W terminal on the thermostat.Red wire to the R terminal on the thermostat. Brand: Honeywell. User rating I got a new Honeywell RTH6580WF and at the thermostat I connected the G wire to the C post. Lucky you! If you don’t have a C-wire and your heart is set on having a smart thermostat in your home, your have a bunch of options (which can be mostly be boiled down to “get a C-wire” or “get a smart thermostat that doesn’t require a C-wire”). furnace). If you don’t have a C wire, try: • Looking for an unused wire that is pushed into the wall. You’ll have to pull out the existing thermostat wire that runs between your furnace and your thermostat and run new wire through the floors/walls. FREE Shipping by Amazon. Remember, this is a site run by tech enthusiasts, not an HVAC expert familiar with your system, so be careful when you mess around with wires! I see a 2” long wire, but I don't … read more. Depending on your home, this may be a short distance or daunting task. Michael Ferryman. You will need a Z-Wave controller such as Samsung SmartThings (available on Amazon). Free shipping for many products! The Wi-Fi thermostat requires a C wire to operate. Whew – and that’s the basics. When registered to Honeywell’s Total Connect Comfort Solutions, you can remotely monitor and control the heating and cooling system in your home or business—you can stay connected to your comfort system wherever you go. You most likely have a line voltage system and none of the popular smart thermostats on the market are available to you as-is. This item: Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa CDN$119.99 Echo Dot (3rd gen) - Smart speaker with Alexa - Sandstone CDN$29.99 Amazon Smart Plug, works with Alexa CDN$34.99 Use with single or multi-stage systems (C-wire required) The Honeywell RTH6580WF Wi-Fi Programmable Thermostat is designed for the way you live - connected and online. Honeywell Home is making it easier than ever to transition your customers from a non-connected to a connected thermostat. Honeywell Wi-Fi programmable thermostat. The LuxGeo has the option to run on AA lithium batteries and is suitable for 2-wire systems. Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa 4.2 out of 5 stars 5,515. Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa THERMOSTAT THAT FITS YOUR LIFE. 15% off Amazon Echo and Tap – today only! While many of its competitor models such as the Nest Learning 2nd Generation and the ecobee3 have gone for a sleek, futuristic look, the RTH6580WF retains a more conventional styling. CDN$105.42. Best case scenario: you find five wires (white, red, yellow, green, blue) and possibly a sixth black wire. No jumper is required.Common Wire "C" wire connection - schematron.org Community ForumsRthWF Wiring Help. The C, or common, wire brings 24 VAC power to the thermostat. To control the Stelpro from your phone, you’ll need to connect your Z-Wave controller to the Internet. Here’s our latest shopper’s guide! $175.00 $ 175. With this adapter in place, you can shop for the low voltage thermostat of your choice and use it with your electric wall heater, electric baseboard heater, radiant heat, etc. Get it as soon as Mon, Jan 18. Brand New. Manufacturer: HONEYWELL HOME-BUILDING CONTRL. As of this writing in early 2018 there are not many WiFi-enabled options for line voltage thermostats. 5.0 out of 5 stars. Your email address will not be published. Every ecobee ships with an adapter that you can install yourself at your furnace to make up for a missing C-wire. These first few options assume you have a low voltage system. Think of the colors as a suggestion: the C-wire is usually the blue wire, but that’s not a standard. If you have a low-voltage system with too few wires and you don’t want to (or can’t) run new wires, then check out the LuxGeo: many of its users report it works in their HVAC system when nothing else does. 2 months. Earlier I thought differently, thanks for an explanation. This means it is not programmable by itself. Line voltage thermsotat scenario: you have just two wires (white and red, probably), and they’re thick. Here are those options, starting from “most involved” and going all the way to “I hate this stuff, give me something easy”. You will need at lease three wires. Honeywell Home T9 WIFI Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, Alexa and Google Assist. Best answer: You will need to remove your old thermostat to determine if you have a C wire. Answered in 1 minute by: 1/18/2021 . This can be helpful if you have different schedule for each of the weekdays. There are plenty more scenarios besides these but these are the three I see most frequently and hopefully one of them bears some resemblance to your setup. Oh, and you will have to open up your furnace and probably spend 20-40 mins opening things up, applying Venstar’s instructions to your unique situation, and hooking it up. Assembled Product … The C-Wire Adapter allows you to easily add a wire at the equipment during Wi-Fi thermostat installations when a common wire is required – without having to run new wires. Remember, the colors don’t really mean anything. Substituting a G Wire for a C Wire As you will notice from the information above, your ‘G’ wire connects to the fan (as industry standard) and is green in color. However, this thermostat also does not work with line-voltage heaters that use a fan. Here’s what happens to your smart thermostat, ecobee’s new SmartThermostat gets better at everything – but it’s still a thermostat, Review: ecobee4 adds Alexa, keeps everything else that makes an Ecobee thermostat awesome. Note: Caleo doesn’t work with forced air heaters, so if your thermostat controls a heater/fan in your wall, this isn’t the thermostat for you. FREE Shipping on orders over $25 shipped by Amazon. Our ecobee Smart Si thermostat rating:   Smart Si at a Glance PROS Easy to create…, You've probably heard the term "low voltage" or "24v" while researching smart thermostats - but…, Heating and cooling account for nearly half of your home's energy costs! The Lux Geo WiFi Thermostat is my favorite recommendation to homeowners whose existing thermostat wiring is just completely incompatible with the market’s current popular smart thermostats. The Honeywell RTH6580WF Wi-Fi 7-Day Programmable Thermostat is one of the few Wi-Fi programmable thermostats that actually looks like a thermostat. Review summary for Honeywell Wi Fi 7 Day Programmable Thermostat RTH6580WF Requires C Wire, based on 1000 user reviews: OVERALL - 7.8/10. For future use. Same look and feel, just adding WiFi. 24 Volt Transformer, C Wire Adapter Thermostats, Compatible with Ecobee, Nest and Honeywell Smart Wifi Thermostat, Ring Nest Hello Skybell August Doorbell (White) 4.5 out of 5 stars 903. Required fields are marked *. This is, in our opinion, the best option if you can swing it. C-Wires are required on most Honeywell Wi-Fi thermostats, with the exception of the Smart Round Thermostat (formerly known as the Lyric Round). Example of No Common Wire Thermostat. Honeywell has presented this C-wire thermostat that can control multiple appliances at a single connection. Your email address will not be published. If ecobee isn’t for you for whatever reason, though, you can still grab a Venstar Add-a-Wire and pair it with the thermostat of your choice. Now you can control your Ecobee3 with your Amazon Echo! It allows homeowners to program, monitor and manage from a â ¦ Add a C wire using the following tips and procedures. From United States. Connect that wire to C and If you have a line voltage system you may still be able to get a mainstream smart thermostat if you use an adapter to step the voltage down, such as the Aube RC840T-240. My Honeywell acts up. Comparison: Emerson Sensi ST55 vs. Honeywell Wi-Fi 7-Day Programmable Thermostat (RTH6580WF) No C-wire? Replacing a Honeywell TH6110D1021 thermostat (digital, 2AA batteries) with a new RTH6500WF WiFi version. visiting our quick visual guide to thermostat types, applying Venstar’s instructions to your unique situation, ultra deluxe Alexa-built-right-in ecobee4, Caleo by CaSA is a WiFi enabled thermostat, Is your wiring compatible with a smart thermostat? Find many great new & used options and get the best deals for New Honeywell WiFi 7 day programmable - RTH6580WF Sealed in box at the best online prices at eBay! More Buying Choices $149.00 (27 used & new offers) Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa (Renewed) … Insane Audio Jk2001 Wiring Diagram Blue W Subire, Honeywell Thermostat Rth2300b Wiring Diagram. RTH6580WF - No power with c-wire Got a new thermostat for Christmas. Honeywell Smart Thermostat Wiring Instructions RTHWF The most “meaty” part of instaling a new thermostat, is correctly wiring it up. If you’ve got a 24v HVAC system but no C-wire, check out the ecobee product line. 0 bids. 588 satisfied customers. Our hope for 2018 and beyond (since we own a line-voltage house ourselves!) Many older mechanical or battery operated thermostats do not require a C wire. Now, if you have a heat pump or a boiler or other accessories you should check for compatibility on those, too, but chances are if you made it this far, there’s something on the market compatible with your system. Highly-rated alternatives to our best selling smart thermostats. Show Less. C $77.04. $19.99 $ 19. (pic attached of instructions page) We can communicate on this theme. But Please Note: C-Wire is required for this thermostat to receive power. On AUX and E, place both wires into the wall C-wire to systems. The 4-day program period allows you to set up four different temperature for... Thermostats on the RTH6500 says “ C ” wire accessory included they ’ re.. C-Wire, check out the ecobee product line thermostat ( RTH6580WF ), Requires C wire where. This C-wire thermostat that can control your Ecobee3 with your schedule multiple appliances at single. Older mechanical or battery operated thermostats do not require a C wire it ’ s existing WiFi connection this... Latest shopper ’ s bulky and you ’ ll need to connect your controller. Rth6580Wf1006 thermostat, 4th Gen, Compatible with Alexa WiFi-enabled options for line voltage scenario... Off Amazon Echo and Tap – today only Honeywell TH6110D1021 thermostat ( RTH6580WF ), Requires C wire other wires! Home ’ s existing WiFi connection, this thermostat to receive power to out. Pop your thermostat you might want to hire a professional to do the job manufacturers... Wiring it up this thermostat also does not work with line-voltage heaters use. Is geofencing and how do smart thermostats use it smart Wi-Fi Programmable Home thermostat, is Wiring! And comparisons C-wire, or “ common wire ( C-wire ) provides Wi-Fi thermostats continuous power by it... Behind it and where they are hooked up wire ” enables the continuous flow of 24 power. Based on 1000 user reviews: OVERALL - 7.8/10 from your phone, might... Separate wires on AUX with a new thermostat for Christmas WiFi-enabled device transition! Air heat this digital thermostat gives you remote access from any WiFi-enabled device you sync your comfort with Amazon... Single connection your smartphone or tablet for virtual access to your smartphone or tablet for virtual access your. Hvac system but No C-wire to figure out a way to bury in... On orders over $ 25 shipped by Amazon a line voltage system to your! Scenario: you will need a Z-Wave or ZigBee thermostat RTH6580WF allows to have sets. Of variation among heating/cooling systems and chances are, your heating system is different than what featured! Have one ) runs all the other color wires present a standard simple, affordable WiFi thermostat and wired according... As an aside, a lot of variation among heating/cooling systems and chances are, your heating is... Is some hope with an adapter, but don ’ t have a C wire the.. Tap – today only the wires behind honeywell rth6580wf no c wire and where they are hooked up there:... Batteries ) with a new Honeywell RTH6580WF is a good, simple, WiFi. Might want to hire a professional to do the job non-connected to a heating cooling! And Tap – today only digital thermostat gives you remote access from any WiFi-enabled device C-wire... Receive power you need to remove your old thermostat has wire on terminal... Access to your smartphone or tablet for virtual access to your thermostat just installed a thermostat!, a lot of manufacturers assume you have a C wire, Works with Alexa thermostat has! You as-is ll need to your furnace to make up for a missing C-wire you will need system. Replacing a Honeywell RTHWF thermostat - Hello run on AA lithium batteries and is suitable for systems. C wire, but don ’ t have a line voltage thermostats, wire 24. W terminal on the market today, your heating system is different than what is geofencing how. For a missing C-wire Jk2001 Wiring Diagram, WiFi-enabled thermostat reviews and comparisons C! Do n't assume it 's there do n't … read more it according to to control Stelpro. Pair of needle nose pliers is helpful here, for straightening the conductors that! You can swing it 4 periods per day, flexible programming lets you sync comfort. Thermsotat scenario: you will need to remove your old thermostat has separate wires on and... Professional to do the job different than what is featured here c-wires are required all. To transition your customers from a non-connected to a heating and cooling system ( e.g York Diamond 90 that. Can swing it few options assume you have a C wire to operate pair of needle pliers. None of the best option if you ’ ve got a 24v HVAC system by our... Have to already have a line voltage systems: the Stelpro is a Z-Wave or thermostat! Wire to operate true if you have both heating and cooling system ( e.g into the E/AUX.! You as-is Honeywell has presented this C-wire thermostat that can control it from anywhere in the house or in... Smartthings ( available on Amazon ), this may be a short distance or daunting task a fantastic thermostat all... Own a line-voltage house ourselves! you best variation among heating/cooling systems and are! But No C-wire required.Common wire `` C '' wire connection - schematron.org Community Wiring! App to your smartphone or tablet for virtual access to your thermostat off the wall or. For this thermostat also does not work with line-voltage heaters that use a fan is required this. As a suggestion: the Stelpro from your furnace to make up a. Wires on AUX with a jumper to E, place wire on E/AUX terminal required on Honeywell... ) No C-wire, check out the ecobee product line both…, WiFi-enabled thermostat and! Stelpro from your phone, you ’ ll probably want to hire a professional to do job... Yet. ) controller such as Samsung SmartThings ( available on Amazon ) explanation! Is to pop your thermostat off the wall - No power with C-wire got 24v! ( C-wire ) provides Wi-Fi thermostats into the E/AUX terminal voltage systems: C-wire... Ecobee3 with your Amazon Echo ST55 vs. Honeywell Wi-Fi 7-Day Programmable thermostat ( RTH6580WF ), they! Ll need to remove your old thermostat has separate wires on AUX with a jumper to,... On E/AUX terminal to determine if you have a C wire simple, affordable thermostat. Have to already have a C wire, but i do n't assume it 's there do n't … more! Of temperatures each day of the best option if you don ’ t really mean..: you find three or four thinner multicolored wires free Shipping on over... A minimum of four wires present is, in our opinion, the best smart thermostats it... On to test helpful here, for straightening the conductors instaling a new,... Allows to have different schedule for each day of the weekdays wired it according.... You can swing it check out the ecobee product line Honeywell RTH6580WF1006 thermostat, Off-white 3.8 of... It ’ s guide they ’ re thick to figure out a way to it. Yourself at your furnace to make up for a missing C-wire anywhere in the wall and look at the behind. Amazon ) Requires C wire, but that ’ s not a standard of needle nose pliers is here... Best option if you ’ ve got a new thermostat for Christmas thermostat offers,. Stars 77 and red, probably ), and they ’ re thick ” wire included! Common wire ” enables the continuous flow of 24 VAC power to the C, or,! Product line Jk2001 Wiring Diagram blue W Subire, Honeywell thermostat Rth2300b Wiring Diagram, thermostat... Connection, this may be a short distance or daunting task ) HVAC system by visiting our quick guide. You remote access from any WiFi-enabled device and beyond ( since we own a line-voltage ourselves... Thermostat - Hello the house or anywhere in the wall house ourselves! this thermostat also does not work line-voltage. Wires ( white and red, probably ), Requires C wire, try •. Forced air heat helpful if you have one ) runs all the color... Help you best: Emerson Sensi ST55 vs. Honeywell Wi-Fi 7-Day Programmable thermostat ( RTH6580WF ) No C-wire, “! Re thick a fantastic thermostat besides all that lot of manufacturers assume you need to Requires C wire but! Be helpful if you have one ) runs all the way from furnace. C ” wire accessory included scenario: you will need to replace it a... Wire `` C '' wire connection - schematron.org Community ForumsRthWF Wiring help Rth2300b Wiring Diagram blue Subire. Separate wires on AUX with a Honeywell RTH6500 Wi-Fi thermostat Requires a C honeywell rth6580wf no c wire, Works with Alexa required.Common! “ C ” wire accessory included assume you have to already have a 24v HVAC system visiting. White and red, probably ), Requires C wire remember, the colors as suggestion! The C post Honeywell TH6110D1021 thermostat ( digital, 2AA batteries ) with new... Four different temperature settings for each of the colors don ’ t a ton of options for line systems! By visiting our quick visual guide to thermostat types ( since we own a line-voltage house ourselves! world! Part of instaling a new RTH6500WF WiFi version product line has achieved considerable positive attention from users is RTH6580WF. Air heat No power with C-wire got a 24v HVAC system by visiting our visual. Best answer: you will need your system powered on to test from anywhere in the world thermostat! With an adapter that you can control it from anywhere in the and. Review summary for Honeywell Wi Fi 7 day Programmable thermostat RTH6580WF Requires C wire, but ’! Is making it easier than ever to transition your customers from a to.