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Emerson

EMERSON Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75W , White

    • Based on 3,428 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, May 10
Order within 7 hours and 25 minutes
Available payment plans shown during checkout

Color: White


Features

  • PRIVACY PROTECTION*: Sensi wont sell your personal information to third parties
  • EASY DIY INSTALLATION: Use the built-in level, illuminated easy-click terminals and step-by-step app instructions for a quick installation. Works with the HVAC equipment found in most homes. Common wire (c-wire) is required
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling, remote access and usage reports
  • CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices
  • SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your equipment, and maintenance reminders like filter replacement

Description

Sensi touch smart thermostats are designed for energy savings and data privacy – to give you full control of your home HVAC. With over 100 years of HVAC experience and manufactured by Emerson, you know our expertise already, even if you didn’t realize it. Emerson produces many of the HVAC parts that our smart thermostats control, so you can feel confident in the product you put on your wall. With our top-rated mobile app and easy installation process, customers of all comfort levels can make the switch to a Sensi smart thermostat. In addition, our customer service team of HVAC experts is always available to help you through any questions you might have. For more information on Compatibility, Energy Savings, and Privacy Protection, please refer to the “Product Documentation” section below.


Brand: ‎Emerson


Color: ‎White


Item Dimensions LxWxH: ‎3.4 x 5.6 x 1.17 inches


Style: ‎White


Item Weight: ‎0.95 Pounds


Power Source: ‎Corded Electric


Voltage: ‎120 Volts


Connectivity Protocol: ‎Wi-Fi


Control Method: ‎Voice


Mounting Type: ‎Wall Mount


Control Type: ‎Touch


Shape: ‎Rectangular


Manufacturer: ‎White-Rodgers


Part Number: ‎ST75W


Item Weight: ‎15.2 ounces


Product Dimensions: ‎3.4 x 5.6 x 1.17 inches


Country of Origin: ‎Mexico


Item model number: ‎ST75W


Is Discontinued By Manufacturer: ‎No


Size: ‎5.625" x 3.4" x 1.17"


Pattern: ‎Thermostat


Item Package Quantity: ‎1


Number Of Pieces: ‎1


Special Features: ‎Backlight Display, Smart Home Compatible, Keypad Lockout, Energy Usage and History, Filter Change Reminder


Included Components: ‎Thermostat, free mobile app, mounting hardware, wire stickers, installation guide, welcome guide with Sensi code, warranty booklet


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎3 years.


Date First Available: May 1, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Philippine TECH SUPPORT now my HVAC system does NOT work
Order product based on feedback and research. Installed Sensi Touch Wif-FI Thermostat based on Emerson website and followed instructions. Once installed ONLY the fan would run, compressor would not start, no cold air. Called tech support located in the Philippines, man stated he was trained HVAC technician. Per his request I sent him pictures of my thermostat wiring before I removed, he had change some settings in the advance settings with the heat pump valve, still no cold air. Then he had me jump 3 low voltage wires off the thermostat using a wire nut, then 4 wires using, still not cold air. He said I would need to call a HVAC professional for my DIY project. I said I would just removed the Sensi WI-FI Thermostat and return it and put my old thermostat back on the wall and he said it would not work. I said, I'm sure it will, my HVAC system was running an hour ago with the thermostat I just took off the wall. He said, the old thermostat will not work. He was RIGHT whatever the Sensi Thermostat, advance setting changes to heat pump valve, and hot wiring my system prevents my compressor for starting. I have called Sensi Touch Wi-Fi (Emerson) customer service/tech support twice and still waiting for a manager to call me back. So now, I waiting for a local HVAC repair company to show up to get my HVAC system up an running, spent all weekend in Florida with NO air conditioning. ... show more
Reviewed in the United States on July 30, 2018 by Steve M
    • Initial Impression is Very Good
------------------------------- Update October 2020: -------------------------------- Working flawlessly since install. I never notice any issues with it's ability to keep the temperature where I want it. --------------------------------- Original Review: Aug 2020: -------------------------------- This is a replacement for a Bryant/Carrier T6-NHP 2 wire thermostat used on a carrier Air Handler and a Bryant condenser unit. My problem was that the air conditioner would never stop once it started. I decided that this job is a "Do It Yourself" job due to the pandemic and since I am a retired Electrical Engineer, debugged it on my own. Not knowing much about HVAC, to get started, I had to dig into how it all works. After quite a bit of learning and diagnosing, I finally determined that the old thermostat was malfunctioning. Probably a sticky relay. The first thermostat I tried was the Honeywell RTH7600D which has a dated appearance, and had limited options for different kinds of systems. It would not work with my 2 stage heat pump. Oddly, there was no option to invert the O signal in heat pump mode. Returned. The Sensi cost more but looked more promising. It arrived with virtually no instructions. The idea is you look at web videos and go through the setup screens. Prior to installing, I like to bug out the signals to make sure they work as expected. Two problems here: 1) The Sensi needs 24 VAC to work. No sign of a battery. So I ordered a 24VAC power supply. 2) The wires are connected to a well designed terminal block on the back plate. No screwdriver needed here, just push to connect, just like a stereo speaker. This block is labeled however, for bench testing, when you snap the thermostat to the back plate to get power, you can access the wires only via probe points. The problem is they are not labeled. I added my own labels here and was able to bug out the unit. Note, there are two methods to bug out the thermostat. 1) look for 24VAC on the various pins, while connected to the C wire with the other probe. 2) Look for continuity between the Red wire RC or RH and the various output. I found out that the first method is problematic as the unit presents 24VAC to the output when it is active or not. They apparently did not install a pull down resistor on these outputs, and they float high. I consider this a design defect simply due to the confusion it could cause. I suspect it results in a number of returned units, however it is not a functional issue. When I re separated the thermostat from the back plate after debugging, I was surprised to see the LEDs still powered on in the thermostat. Apparently, there is a super-cap or maybe a non-customer battery in there somewhere to keep the unit up through small power glitches. I wired up the unit. and continued the install. Connecting to WIFI was seamless. All it asked for was to identify which network (SSID) to connect to, and the password. Nothing else. The phone app works well also. No connectivity glitches so far. The Sensi does not support the Dehumidify signal on my air handler, but it takes care of dehumidify in a similar way itself. You have good control over that also. The user can also switch on predictive programming, which causes the Sensi to arrive at your desired temperature at the specified time. You can set multiple daily schedules in the app. All pretty straight forward. It appears that you can set as many as 8 set points per day as desired. Unfortunately, the user interface is a bit rough around the edges. Once I created a specific schedule, I could not find a way to delete it. So, just be sure to modify the provided schedule for your first schedule. You can also set the unit to go fan only periodically to avoid stale air in the duct work. The unit knows outside temperature but that is through the web. It does not support the outside temperature sensors provided by my system. I would like to see the unit display the weather on the thermostat, but alas no, but is is on the phone app. It is not clear how much functionality is lost if internet connectivity is lost, but I would recommend a different thermostat if you do not have wireless internet. A nice feature is the web display can show you how many hours the system runs in each mode per day. It does not break down high cool/low cool in 2 stage heat pumps however. I would like to see that feature. There is a modest amount of control over the algorithm, but information provided about exactly what and how the unit does what is does is not to be found. Fortunately, it seems to do its job of regulating temperature in an efficient way pretty well. It is an attractive unit, but be aware that the screen starts to fade out at a 45 degree angle. I will update after I get some more experience, however so far so good. Note: Unit needs to have an internet connection for all but basic functionality. Problem: If unit goes dead, It may not be the unit. Check to make sure you still have 24VAC available. Many HVAC units shut off the 24VAC when the drain overflow switch gets triggered, such as during a drain clog. By the way, Amazon recommended to get a "Emerson F61-2663 Wall Plate for Sensi Wi-Fi Programmable Thermostat", along with this purchase. This is not needed, it is a mistake. Don't order it. ... show more
Reviewed in the United States on August 20, 2020 by R. B.
    • I’m pretty obsessed with the Sensi app!!
Love this thermostat!!! We love that the fan can run independent of the furnace. We have a gas fireplace in our living room and the heat is circulated by that setting. I can’t wait to see what impact getting this thermostat will have on our monthly heating/cooling bills. Try not to use the optional plate that Emerson makes to go behind this if it’s needed - it looks really cheap. You’d be better off to touch up the paint than spend the $10 for that thing. This was easy to install and I love the app!! **update** When the weather warmed up a few days ago and we changed the status to auto - setting a warm to and cool to temperature on the thermostat - we noticed we were having an issue with our compressor running at different times than the fan. It was confusing because we hadn’t had any issues with the heat. I contacted Tech Support and they were able to solve the issue. Even though we went through the setup wizard when we installed the thermostats (we’ve since bought a second one!) the settings were wrong!! Very wrong! This was the sequence we used to change the settings and get our issue solved: Go to the physical thermostat. Press “Menu.” Press "Advanced Set Up." Press “Set Up HVAC Equipment.” Press “Change settings.” If you have a heat pump, choose “HP1.” If you have an air conditioning unit, choose "AC1.” If you have more than one stage cooling, change this to “HP2” or “AC2” to represent this. If you have a wire in Y, but not Y2, you have single stage. If you have a wire in Y and Y2, you have more than one stage of cooling. If you have a gas furnace, oil burner, or boiler system, choose "GA1" which represents a single stage gas/boiler heating system. If you have an electric furnace, this should be set to "EL1." If you have more than one stage, change this to "GA2" or "EL2” to represent this. If you have a wire in W/E, but not W2, you have single stage. If you have a wire in W/E and W2, you have more than one stage of heating. Once you've selected the choice that best describes your equipment, press “Save” to leave the menu. This was the fix we needed!! Now the house is cool and everything is once again, running like a charm!! Thanks Emerson Tech Support!!! ... show more
Reviewed in the United States on March 1, 2020 by L. Amstutz

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