I have a nest and for over a year and a half it ran without a C wire. One additional method for no c wire is stealing the g wire and moving it over to the c wire connection at the thermostat and furnace. In that case it will typically be labeled Rh/c. I have an outlet in the closet beind the tstat. For example, if your set point is 72 F and your cycle rate is 2 F, the heat wont kick in until the temperature reaches 70 F. The Sensi doesnt allow you to choose a specific number of degrees for your cycle rate. There is no HVAC control board but just two 24V transformers near the water pump and valves that open to allow the hot water to flow to the two zones. There are many other thermostats that have this feature. (the "switches" in this case are mechanically actuated by temperature using springs and tilting glass bulbs full of mercury and other old-timey mechanical mechanisms). The cycle rate determines how much the temperature will change before your thermostat tells the heating/cooling unit to kick in. W-R 1311-102 zone valves/3-wire stats & Emerson Sensi Smart Stat The new generation of the device also kept the geofencing feature, which allows detecting when a user leaves home and comes back to switch between energy saving and comfort modes. You could potentially power the Sensi just on batteries, but that would require turning the Wi . This quote from their website makes me think otherwise: If you already have a c-wire connection, even though it is not required, we recommend connecting it to Sensi to help improve Wi-Fi connectivity and battery life.. Doing in summer because I dont need the heat but the furnace has been off. The c-wire is often blue, but not always. Youll have to remove the access panel to your furnace to locate the panel. What is a C wire or common wire? - Emerson So my real life experience definitely does NOT reflect a 10 year life span. That depends on the type of heating system. HrmIm not an expert on the inner workings of the Nest. The Nest Pro used a 5 wire hookup of Y W G Rc and Rh and NO C wire. The Sensi supports, but doesn't require, the C-wire and it uses two AA batteries for backup power. I am still trying to get a answer from Emerson. However, its not the simplest solution. Hi Alex. A search for this thermostat will reveal two different model numbers for the Sensi thermostat and it turns out, they are the SAME thermostat. I have Rc, W, Y, G, and Rh connected. I believe the only way is to reboot your router. Learn More. Sensi Thermostat Without a "C" wire installed, the Wi-Fi connection rev2023.6.2.43474. One example is the Emerson Sensi WiFi thermostat. No C-wire? Install a Nest thermostat at your own risk two systems. EMERSON Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color will drop off after about two hours to preserve the AA batteries. How would I check? Air Conditioner Repair Help Videos. Thanks for trying to help folks with their HVAC systems. Although Ive seen it stated in several places, its not entirely correct to say that the c-wire is what powers the thermostat. With flagship thermostats like the Nest and Ecobee, a lot of what youre buying is the fancy touch screen, and in our case we didnt mind not paying for a touch screen we didnt need. Some users find that they don't even need to change the batteries. Sensi Wire Picker - Emerson But it works. Im not sure how to connect to the Nest Pros though. I was just trying to save $$ from calling a tech. Amazon.com: Customer reviews: Emerson Sensi Wi-Fi Smart Thermostat for You need the c wire to power the wifi thermostat. If not, it likely means the blue wire is not connected on the other end. To me, it seems like the relatively small difficulty of installing an add-a-wire solution outweighs the potential inconveniences of not doing it. etc. Unplug your TV and wait a full 60 seconds. I just installed one in Melbourne, Australia and works fine and the only problem is it does not support our time zoneHope the new firmware comes soon! Emerson Sensi thermostat review: A traditional thermostat - TechHive If you have problems, then worry about getting a c-wire. Typically, the wires that provide the power (often called the hot wires) are labeled Rc (cooling) and Rh (heating). They do the same thinghook the red wire up to the proper green/white/yellow to turn various parts of you HVAC on and off as needed. Heres what happens to your smart thermostat, Honeywell Wi-Fi Smart Thermostat RTH9580WF Review, Honeywell Wi-Fi advantages over Nest Learning Thermostat, https://sensi.emerson.com/en-us/support/how-can-i-be-sure-a-sensi-thermostat-will-work-with-my-hvac, Amazon Smart Thermostat Review: the budget thermostat of our dreams, Review: Honeywell T9 thermostat is capable and affordable with just a few annoyances, Review: ecobee Lite SmartThermostat packs ecobee goodness into a wallet-friendly package, Review: Nest Thermostat strikes a perfect balance between value and features, Emerson Sensi review: a great WiFi thermostat at an affordable price, Ecobee SmartThermostat review: premium thermostat delivers comfort and convenience, ecobees new SmartThermostat gets better at everything but its still a thermostat, System alerts, humidity control, fan control, +/-1 degree swing range, No C-wire required for many systems (see exceptions), Control from anywhere in the world via the app, Same size and shape as a "normal" thermostat, Works with Amazon Alexa, Google Assistant, Apple HomeKit, Samsung SmartThings, Not a humidistat replacement - you've been warned, Requires cloud access for control via app, no intranet control, Conventional heating and cooling, such as a gas furnace, air conditioner, electric furnace, or boiler, Heat-only gas furnace, electric furnace, or boiler, Security code card for hooking up with the web portal and app. No thank you. 2. Common Wire for Sensi Thermostat | Sensi US - Emerson Our request: Would you be so kind as to recommend a non-smart thermostat that fits this performance specification? Hi, I have a Nest thermostat with these wires: Y1,G,W1 and Rh so I dont not if i need and extra wire to provide more power to the Nest, please let me know. I live in New Orleans & it super hot & humid this time of yr. Shoot, we still have hot water, just realized. Thoughts? Our situation calls for a non-smart, non-wifi thermostat to run our HVAC for one-year cycles of set-it-and-forget-it. PDF Installation - Emerson Not to mention the extra stress on the compressor due to the faster restart cycles. Had to run back to Home Depot at 9pm after spending a few hours working in the heat (no thermostat=no cooling) and with tech support to make it work only to find out the unit was defective. Emerson Sensi Touch WiFi Thermostat Review - Pros & Cons They also said it would be expensive to run an additional wire. If there is a wire connected, note its color and go back to your thermostat. I have a very old Honeywell programmable thermostat. So can I just take the blue wire in the cable and hook it up to my board? Some smart thermostats claim to not need a c wire. I ran the required common wire and connected the Sensi (red wire-was 5-now RH; white-was 4, now W/E; green, was 6, now O/B, & common to C). three years ago I bought a smart thermostat, installed it and it didn't work. Integration with Wink makes it even easier to control your thermostat. Each Emerson Sensi thermostat comes with a pair of regular AA batteries. Can I also say: 'ich tut mir leid' instead of 'es tut mir leid'? Clearly illustrated, in-app instructions will walk you through each step from start to finish. Ill have to figure out what heats that now, too. He enjoys technology, sports, outdoors, and dabbles in the dark realm of politics. I barely saw any difference in the cycle times no matter what cycle speed was selected. Am I wasting money on this attempt to fix my C wire issue? Given that I am going to add a third wire for the C wire, and I am going to connect one end to the Tstats C terminal, where on my unit should I connect the other end of the C wire? Note to readers:Some links on SmartThermostatGuide.com are affiliate links. I know I wouldnt want to be replacing batteries every couple months and I definitely know that I want my WiFi connection to be at its best. How to fix this loose spoke (and why/how is it broken)? We may not want to go back to our desert hideout for one or more years. And then connect it to the thermostat? I originally wrote it the way it is now (because thats what makes sense logically) but then I talked to someone who seemed to know what they are talking about and he said I had it backwards. This article is really well written and I am very grateful for it. While the TV is unplugged, press and hold the power button for 30 seconds. Review: Honeywell RTH6580WF WiFi 7-Day Programmable thermostat, Which smart thermostats are compatible with Alexa? Turns out now Sensi support is saying that wifi wont work consistently without a C Wire. I believe the Pro version is cheaper because you have to have it installed by a HVAC certified company in order to benefit from the 5 years warranty. The hub makes it possible for all your Wink devices to speak to each other. Overall, we found the app straightforward to navigate and use. Didnt make sense to me. the correct wire combination does not work and after emailing them 3 times and waiting on the telephone 3hours with no help or answer. Nest will work without a c-wire with most systems. The Sensi has enough smart features to give you the control you want, but it wont leave you dumbfounded trying to figure out why your heater or AC is going crazy. Great thermostat although the one I have is defective. Thats what the other wires do. Can I use a WiFi thermostat without a C wire? Learn More. I have no C wire. As soon as you've installed and connected your thermostat, the Sensi app serves as an intuitive remote control that lets you set, change and program your home comfort from anywhere. Where is my HVACs control board? We have the Sensi thermostat the fan is running all the time there are two choices auto and on which ever you choose the fan is running non stop is there a way to turn fan of for a bit.any help would be appreciated we are seniors and not too savvy re wifi ..any help will be appreciated. I wonder if this is why I have had to replace my Nest four times (about every three-four months) since I have moved into my house. By the way, about a 100 years ago, we lived in bush Alaska on a small island with our family. My only complaint is battery life. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Id like to pull new wire between my unit (heater only) and my new Tstat. The Sensi server in the cloud gets all the data about when your equipment turns on and off. @Tester101 , I opened it up again, I do have 2 extra wires, one is blue, and one is brown. The on-unit controls are fairly limited. You cannot connect directly to your Sensi thermostat using your local WiFi network. How low can the heat mode be programed for an extended time period. Their options now are run a c wire or buy a kit that replaces it. Although there are some best practices, there are no strict standards that wire name and color adhere to. Seems like a small improvement that would be easy to implement would be browser based setup. Control Multiple Thermostats From One App, Integration With Other Home Automation Platforms, Best Z Wave Thermostat: The Most Complete List Youll Find, Honeywell RTH9580WF Review: Tried And True, Nest Thermostat: Convenience, Comfort, And Style For Your Smart Home, Honeywell Lyric Round Review: Its Cheaper For A Reason, Forced air systems including gas, oil and electric, Heat pumps including those with auxiliary heat, Up to four stages of heating and two stages of cooling, Line voltage heating such as electric baseboard or wall convectors. Did your HVAC provider mention anything about the wire-saver option? Apparently it checks this. Nest 3rd gen: whats new, and is it worth upgrading? Sincerely, Gary. It ensures a noiseless operation - In most homes, the 'low' settings in the 2-stage thermostat is what is mostly used. Related Posts. This is what they said: In certain situations, Sensi does require a common or "C" wire. Our current thermostat runs off of AA batteries. If you steal too much, you turn your equipment on when you dont want to. So, the c wire doesnt actually provide the power. The Best Smart Thermostats of 2023 - Picks from Bob Vila The Emerson Sensi is our go-to smart thermostat recommendation for installations without a C-wire, shoppers on a budget, and anyone in need of a simple smart thermostat that still does virtually everything you might want it to. It boasts DIY installation and compatibility with Alexa. The other end just plugs into a regular outlet. It is true that you dont NEED a c-wire. Whether you own multiple homes, a business, or some rental properties, the Sensi will empower you. Or, you may make a vacation schedule that saves as much energy as possible while you are gone. Currently it is way too responsive to the local conditions at the thermostat. Cover this product: 4-Year Protection $29.99. The need for a common wire, or "c-wire," depends on which Sensi thermostat model you have and your system type. Can one of these be hooked up on each end and used as the C wire?? Help! Thermostat wiring color Wire coloring is not standard across all types of thermostats, but these are the most common colors: C wire (blue or black wiring, common for 24-volt power to the thermostat) R wire (red wire for power) R - 24 VAC power from the transformer in your gas furnace Rc - 24 VAC provides power to cooling Now that I wanted a wifi smart thermostat the green g wire has been repurposed, Eric, I hope you are still replying here. Wish I had your experience and smarts. Also, I agree the 20%/year figure in the ecobee article is no longer true. You sure are persistent! The Emerson Sensi WiFi thermostat is a sensible option that has a lot going for it. Since the one I have is for both heating and cooling, I think I should be fine. Provide the MAC ID located on the back of the faceplate to the agent. The furnace heats with gas for floor heat and fan, as well as the hot water. So now the Sensi is non Wifi connectable Which is ironic given that was the major reason to purchase . Great explanation! Sensi is the sensible solution to the smart home thermostat. The wifi tstat is working on batteries (Rc/Rh jumper is out), but the lag is terrible. Learn more 3-Year Protection $21.99. Emerson support have committed to consider other time zones, but Im not holding my breath. The most common type of system that qualifies here will be a heat pump with an auxiliary heat source. Thus our request for your recommendation, so I can install the year-around thermostat and be confident it will function in both the AC and heat modes. No local (intranet) control. Your email address will not be published. Its definitely not worth switching overfrom our top pick, the Ecobee 3, andif all you really want is a WiFi thermostat (and dont mind plopping down less thanhalf as much cash), check out the Emerson Sensi. In most cases, this solution is the best solution to the problem. Designed to work with the wires you already have, Sensi thermostat does not require a common wire (c-wire) for most installations, so it is compatible with the HVAC equipment in many homes in U.S. and Canada. Early start feature starts heating or cooling ahead of time so the house is at the desired temp by the time you want it to be that temp. Basically it makes the fan run independently from the heating or cooling function, starting from 10% of the time and going up to 100% with 5% increments. My 2009 Furnace is not most systems I guess. The app is available for iOS (reviews and screenshots) and Android (reviews and screenshots). Installation requires a screwdriver and the ability to read a wiring diagram. Noise cancels but variance sums - contradiction? Rep said to call tech because there is a grounding problem at outside AC unit. not within the API, so it seems like it will not be in different third occasion apps How can I send a pre-composed email to a Gmail user, for them to edit and send? If the swing is 2 degrees and the set temp is 70, the system will heat at 68 and turn off at 72. How can I install a Honeywell Wifi RTH6580WF1001 thermostat in place of a Honeywell RTH2300b? The c wire is an extra wire that can be used to provide a return path for continuous 24V power for any application. If you have no C-wire, the Sensi will only work for you if you have both heating and cooling. Swing range preferences vary by user some people want the house held at 72 degrees no matter what, even if it means the heating comes on/off more frequently. The Sensi smart and Sensi Lite smart thermostats work on most conventional heating and cooling systems without a c-wire. You can still buy the Pro version but if you need to use the warranty within the 5 years, you will have to call a company to have it switched and honor the warranty which can cost you more at the end. When I jumper the white and red together at the control board the flame stays on. THINK TWICE! If the C terminal is simply a continuous ground for the 24VAC source R, can I pick up a C ground potential from a nearby 110VAC outlet (white/neutral return, or green/safety ground) .
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