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Last Updated: April 29, 2020 (Refresh Now)
Emerson Sensi Wi Fi Thermostat for Smart Home DIY Version Works with Alexa Energy Star Certified
Last Updated: April 29, 2020 (Refresh Now)
8.7
SCORE
/10
Total Reviews
800
Old Reviews
0
Unverified
116
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Review Analysis - 684 recent, verified reviews
Detailed Mode
Setup
310install, installation, setup, instructions, app
+96%
-4%
" ... It works perfectly and the installation couldn't have been more simple and straightforward using the sensi app. ... "
" ... I had one mystery wire on my old setup. ... "
" ... The install was quick, set up was easy. ... "
" ... I have never installed a thermostat before. ... "
" ... It was easy for me to install, as someone who has never installed a thermostat before. ... "
" ... Fairly simple to install, and the tech support line was helpful. ... "
" ... The Sensi are easy setups and keep consistent signal and have easy customization in the app. ... "
" ... The thermostat was easy to install, and once connected to my network, easy to program and connect to the Echo. ... "
Ease of Use
249app, install, easy to use, simple, setup
+100%
" ... Easy to install and program. ... "
" ... Not difficult at all. ... "
" ... Easy to install and use ... "
" ... You must set up and account for SENSI that was easy. ... "
" ... Easy to install and program. ... "
" ... Easy to use ... "
" ... Big numbers and very easy to control. ... "
" ... Easy to install and connect to WiFi. ... "
Software Platform
194alexa, thermostat, sensi, install, easy to use
+91%
-9%
" ... App is simple and easy to use, while being able to create multiple very specific schedules. ... "
" ... it works well with Alexa and did not require an additional cable. ... "
" ... I use it daily with my Alexa, no issues. ... "
" ... This was easy to install and hook up to Alexa. ... "
" ... Very intuitive app for thermostat. ... "
" ... Then I linked the account with my Amazon Echo to control it from upstairs. ... "
" ... And a good solution in the app to help install. ... "
" ... We had Alexa and so decided to add smart thermostat. ... "
Apps
150thermostat, sensi, easy to use, alexa, install
+92%
-8%
" ... After that was done it only took a few minutes to install the app and login on my wife's Apple. ... "
" ... Works great, needs better instructions for setting programs. ... "
" ... I downloaded/setup the app. ... Now I can change the setting with the app and it responds in under 2 seconds. ... "
" ... Connects to app easily, and works better than expeted ... "
" ... Easy to connect to the app. ... "
" ... Does say "Beta" in the app and I did not try it to see if it works). ... You can also adjust the thermostat manually and you can see any changes reflected in the app. ... "
" ... So far works perfectly I got it setup in the app and in Google home mini. ... "
" ... Works with android or iPhone apps. ... Alexa app also can control thermostat. ... "
Device Compatibility
131app, control, thermostat, sensi, easy to install
+86%
-14%
" ... Connects to our Google Home Mini so we can control it via voice even. ... "
" ... So far works perfectly I got it setup in the app and in Google home mini. ... "
" ... Works perfect with Amazon Echo ... "
" ... It linked up perfectly with my iPhone. ... "
" ... Just tell Alexa to do it for you. ... "
" ... My favorite feature is being able to control them on my iPad and iPhone. ... "
" ... This thermostat has been a real game changer in our house because we can control it with our phone or google home mini. ... "
" ... easily connected to Alexa, it has a battery back up so in the event of a power loss it will maintain settings and you can still see the temp/humidity, and it was dead on temp wise, no adjustment needed within the app. ... "
Wifi
99thermostat, wi fi, connection, sensi, connect to wifi
+78%
-22%
" ... I have been searching for some time for a t-stat that has wifi that will work for this configuration so it is not 40 degrees when we arrive on various weekends. ... "
" ... I have had no issues with WiFi connectivity that were mentioned by a few people (maybe it’s their WiFi!). ... "
" ... If your router goes down you need to be able to reboot it automatically. ... "
" ... Extremely easy to install and app and WiFi connection was also easy. ... "
" ... The Sensi Wi-Fi Thermostat is great! ... "
" ... Wi-Fi works fine as well, as does voice control with Alexa. ... "
" ... Easy to install and connect to WiFi. ... "
" ... The right amount of technology needed for a WiFi Thermostat. ... "
Product Reliability
49months, thermostat, installed, ago, years
+65%
-35%
" ... After a few wiring changes it started working perfectly. ... "
" ... It has functioned flawlessly since. ... "
" ... Working great so far ... "
" ... After many weeks this was still a great product. ... "
" ... Have been using this thermostat about a month now, has been extremely reliable. ... "
" ... It worked perfectly for 3 months now on the same set of batteries. ... "
" ... After I figured out the heck was causing it, it’s been working like a champ. ... "
" ... SeemEd to be working. ... The unit was working in reverse. ... "
Price
44money, cost, value, worth, waste of money
+91%
-9%
" ... Best bang for the buck on the market. ... "
" ... Works perfect at a great cost. ... "
" ... It really works great and over time will save us a lot of money. ... "
" ... Also I'm sure they will need to be changed frequently but it's a small price to pay for this relatively inexpensive unit that seems to function perfectly at least for me. ... "
" ... Has exactly the bells and whistles we want/need with a very affordable price tag. ... "
" ... Disclaimer : I bought these to make money. ... I bought 2 of these due to the reviews and the price for each was under $100.00. ... "
" ... I loved and save money on my bill ... "
" ... Still a great thermostat for the price. ... "
Features
44thermostat, feature, mode, lock, smart thermostat
+82%
-18%
" ... Good and reasonably priced WiFi thermostat with nice features. ... "
" ... All the features needed to control standard forced air heating and AC. ... "
" ... Many high end features in this thermostat for 98.01. ... "
" ... It was easy to install, and the features make this a more efficient thermostat. ... "
" ... Nice scheduling features and displays. ... "
" ... The thermostat doesn’t have all the bells and whistles of more expensive units, but it gets the job done. ... "
" ... We wanted a thermostat with a great price and nice feature set for our thermostat. ... "
" ... This is my first smart thermostat. ... "
Cables
43wires, wire, thermostat, without a c, thermostats
+79%
-21%
" ... I had one mystery wire on my old setup. ... "
" ... If you don't have a C wire attached to your furnace, you can get a kit to install one. ... Most smart thermostats will not run without a C wire. ... "
" ... I have only 3 wires connected to the thermostat and it works great. ... "
" ... it works well with Alexa and did not require an additional cable. ... "
" ... I figured out blue wire goes to yellow and the rest all matched up with their color. ... It doesn't require a C-wire. ... "
" ... Price wise it was one of the lower cost ones, plus the literature claimed it did not require the C-wire for four wire thermostat set-up. ... After I removed one from the wall, I realized i had the fifth wire (blue) unused. ... Looking at the SENSI literature, I decided it was not really needed, and installed them without the C-wire connected. ... "
" ... In this new unit, the old wire that was connected to “R” can be connected to either “RH” or “RC” because of the pre-installed jumper wire. ... "
" ... Overall - Love and in my case there was no coice as I needed a unit without the C-Wire Requirement ... "
Network
43router, network, connection, thermostat, signal
+58%
-42%
" ... Connected to WiFi fight away. ... "
" ... I have had no issues with WiFi connectivity that were mentioned by a few people (maybe it’s their WiFi!). ... "
" ... We live 3000 miles between houses and the wifi thermostats are great for assuring that the house temp is where I want it. ... "
" ... After installation I connected to wifi, which was as much easy process, then it start working perfect. ... "
" ... Connected to WiFi without any problems. ... "
" ... I own a 2 apartment building and just recently added a second Sensi to my floor. ... "
" ... Connection to the internet was fairly easy, it keeps Wifi connection, have not had any drops. ... "
" ... It has dropped signal a few times but that's expected from all gadgets. ... "
Capacity
41floor, heat, warm, sensi, upstairs
+90%
-10%
" ... I had a Sensi in my old house and bought another one when I moved to a new house-I like the product that much! ... "
" ... I had previously gotten 2 for 2 zones in my house, and this I got for my third zone. ... "
" ... Programmed the heater to come on weekdays in the morning (during this winter), so the house is nice and warm for the family before they wakeup and get out of bed in the morning. ... "
" ... It's nice to wake up or come home to a warm house, but also keep the heat low when no one is home. ... I was surprised how different the levels of humidity were on each of the floors of my house. ... "
" ... For my apartment’s a/c and heating system, it works just fine. ... "
" ... My house is warm when I get home. ... "
" ... This thermostat is much better than the last 2 Nests that we have had in the house. ... "
" ... I think its really worth the extra for this feature as it eliminates hot and cold spots in the house. ... If i had another house I would buy another and would not hesitate to recommend the pro model to my family and friends. ... "
For Travel
17home, travel, vacation rental, schedule, trips
+94%
-6%
" ... It is especially useful when I am traveling. ... "
" ... Was able to review the status when i went on a trip. ... "
" ... It’s exactly what I was looking for to install at my mountain vacation rental. ... "
" ... A great option for those with a vacation home or those who travel a lot. ... "
" ... Had a chance to use it yesterday: coming home from a week of travel I was able to bring my home up to temperature so it was comfortable upon arrival. ... "
" ... I can’t wait for my spouse and I to take our thermostat battles with us on vacation. ... "
" ... I purchased 2 of these, one for my home the other for my vacation home. ... "
" ... This schedule is my "Vacation" schedule ... "
Marketplace
17advertised, works, one, used, response
+65%
-35%
" ... This has to be one of the best Amazon purchases I have ever made. ... "
" ... It works as advertised. ... "
" ... Using in a retail store. ... "
" ... Works as advertised. ... "
" ... Works as advertised ... "
" ... Performs as advertised. ... "
" ... I loved the support given to prospective users before the sale and after the sale. ... "
" ... Product does everything as advertised. ... "
Battery Life
16battery, battery life, aa batteries, year, energizer
+63%
-38%
" ... That said I'm using Energizer ultimate lithium ion batteries. ... "
" ... Battery lasts a long time, very easy to install and use. ... "
" ... I'll update with battery life later. ... "
" ... Only had it in a short time so not sure how long the batteries will last, but my t-stat ran on 2 AA batteries for a couple of years before draining. ... "
" ... It worked perfectly for 3 months now on the same set of batteries. ... "
" ... It has been two weeks since I started using it, but unlike someone else's review, I don't see any battery problem at all so far. ... "
" ... Once connected battery level remains pretty constant. ... I'm curious though -- how long the two AA batteries will last in a power outage. ... "
" ... Battery life seems to be good so far, installed for about 6 weeks now. ... "
Returns
13return, one, unit, another, returned
+15%
-85%
" ... Will give it another try and will be returning. ... "
" ... I will return it. ... Did I mention it was junk? ... "
" ... Very disappointed in this however didn’t want to go through the hassle of returning it and getting another. ... "
" ... I will be returning. ... "
" ... Assuming my unit was faulty, I got Amazon to ship a replacement, but I saw the same result with that one as well, leaving me to assume the issue is compatibility issues, despite advertisements to the contrary. ... "
" ... I had to return it. ... "
" ... I returned the unit. ... "
" ... (I did not seek help with the failure to heat, but simply returned it ... "
Cooling
11heating and cooling, heat, air, thermostat, c
+73%
-27%
" ... We are really loving being able to control the furnace from the bedroom this winter. ... "
" ... - Really like the ability to create multiple heating and cooling programs. ... "
" ... I live in a 1 1/2 story house with a split-system heating and cooling plant. ... "
" ... I am sure it will make a difference on my heating and cooling bills. ... "
" ... Easy to install, easy to operate and has many settings like schedule that make it much easier to control heating and cooling. ... "
" ... After installing the thermostat my furnace wasn’t blowing hot air. ... "
" ... Tried the cool setting. ... With the heat on I was running the compressor as air-conditioner and auxiliary heat at the same time. ... "
Remote
10control, works, use, thermostat, temperature
+100%
" ... The easy setup and remote access ... "
" ... The remote wi-fi application works great and it is easy to use. ... "
" ... Remote control of heat for a vacation home. ... "
" ... Remote access is quite useful. ... "
" ... Remote app is simple and intuitive. ... "
" ... Remote control is great! ... "
" ... Waiting for remote temperature sensors ... "
" ... The thermostat control is ease to use. ... "
Display Clarity
10also, screen, color, large, humidity
+100%
" ... Large screen is easy to read. ... "
" ... If you need a color display and chrome this ain't the thermostat you are looking for. ... "
" ... You don't really need a thermostate with a color LCD. ... "
" ... The display is effective and it is simple to operate. ... "
" ... I like the big screen, it also displays indoor humidity on the display. ... "
" ... Color touch screen? ... "
" ... It's also great to have a humidity display. ... "
" ... Has a nice big display with the temperature as well as some other information. ... "
Controls
9buttons, thermostat, click, loud, lock
+67%
-33%
" ... Has all the functions you need to control your home environment. ... "
" ... They hit all the right buttons. ... "
" ... It controls the thermostat without any issues. ... "
" ... The thermostat control is ease to use. ... "
" ... Big numbers and very easy to control. ... "
" ... Love the backlight on the unit with the handy button to press to get it. ... "
Fit
9fit, wires, unit, thermostat, base
+56%
-44%
" ... Amazingly, the mounting holes matched my old thermostat, so that saved a few minutes of work. ... "
" ... The mount and wiring connection are very sturdy. ... "
" ... After removing the old base, I drilled a necessary hole for this base, reusing one of the current ones so I didn't have to drill extra. ... Popped in the anchors, screwed on the base, pulled the wires through and screwed them into the appropriate connectors. ... "
" ... We had to buy a screwdriver small enough for the inside screws. ... "
" ... This fit the bill perfectly. ... "
For Running
8run, minutes, less, install, alexa
+75%
-25%
" ... I was up and running in just a few minutes. ... "
" ... I run a pair of these with Alexa and haven’t had any limitations vs the nest in the offices. ... "
" ... I am pleased with how easily I could install it myself and get it running quickly. ... "
" ... If your system seems to be running backwards, check for this. ... "
" ... Everything is up and running. ... "
Product As Described
8works, described
+100%
" ... Performs as advertised. ... "
" ... It works as advertised. ... "
" ... Product does everything as advertised. ... "
" ... Works as described. ... "
" ... Works as advertised. ... "
" ... Works as advertised. ... "
" ... Works as advertised ... "
" ... Works as advertised. ... "
Pedometer
7step by step, step, app walks, minutes, instructions
+86%
-14%
" ... The support rep walked me through a couple of troubleshooting steps. ... "
" ... I appreciated the step-by-step instructions. ... "
" ... Directions walk you through step by step and no issues. ... "
" ... The app walks you through step by step. ... "
" ... Even taking my time and reviewing each step multiple times to make sure I got it right, less than 15 minutes. ... "
" ... It gives you step-by-step instructions it truly was very easy and it works fantastic I couldn’t be happier ... "
Heating
7system, heating, cool, turn, sometimes
+43%
-57%
" ... The next day we had no heat on a very cold day. ... "
" ... The only problem: no heat. ... "
" ... Anyway, the unit was installed and would only work on cool not heat. ... "
Build Quality
7plastic, issue, wires, wire, screwed
+71%
-29%
" ... In the end the issue was that I had wired the thing and set it up correctly, however, because I had taken the cover off of the heater it would not turn on. ... "
" ... I close my reviews with a THANK YOU because I do appreciate you investing precious time in reading my material. ... "
" ... The mount and wiring connection are very sturdy. ... "
" ... Popped in the anchors, screwed on the base, pulled the wires through and screwed them into the appropriate connectors. ... "
" ... Thermostat works as designed and looks great with the addition of the optional back plate. ... "
Power Consumption
5electricity, bill, saving, save, really
+80%
-20%
" ... The Sensi is economical to buy and will reduce my energy costs. ... "
" ... Qualified for energy rebate from electricity supplier which made this purchase a no brainier. ... "
" ... Really excited about our hot CA summers and not racking up huge power bills. ... "
" ... I'm sure this is an energy saving feature but I like my machines to do as told. ... "
Device Stand
5mount, unit, looks, thermostat, fit
+40%
-60%
" ... My plumber had to use the old screws to mount the unit to the wall. ... "
" ... The only problem i have is the thermostat does not fit tight on wall plate. ... "
" ... Before mounting the unit back on its wall mount, the unit noticeably heated up and I smelled burnt electronics. ... "
Cable Length
5wire, works, jumper, wires, rh
+80%
-20%
" ... It works fine, no C wire is required. ... "
" ... Works great with no C wire. ... "
" ... It took me a while to figure out how to connect the wire. ... "
Speed
5less, running, installed, 30
+100%
" ... I was up and running in just a few minutes. ... "
" ... was able to get installed in less than 30 minutes. ... "
" ... Takes a few minutes and ensures its down correctly. ... "
" ... Ohhh I installed in less then 15 minutes ... "
Design
5looking, wall, unit, fits
+100%
" ... I guess I'll look at other alternatives . ... "
ISP
4router, getting, connection, trouble, connected
+50%
-50%
" ... Only problem was getting linked to internet. ... "
" ... I had considerable trouble getting it connected and staying connected. ... "
Cleaning
4thermostat, sure
+75%
-25%
" ... - The control panel/thermostat has a nice clean, slim look, not bulky, doesn’t stick out ... "
" ... Please check your furnace to be sure no fuses are blown out, and be sure you have a new or clean filter. ... "
" ... A simple, clean looking, basic wifi thermostat. ... "
Call quality
4phone, support, returned, minutes, back
-100%
" ... Got a return email saying that they have a large volumes calls and will get back to me. ... "
" ... After one phone call (had to leave a message) and two emails, Sensi has still not responded. ... "
" ... The support phone line is understaffed and have not returned a call in over an hour. ... "
" ... Sat on hold for 30 minutes on the phone, followed prompts to receive a call-back, and no response. ... "
Size
4travel, especially
+75%
-25%
" ... It's handy. ... "
" ... This thing is about as handy as a pocket on a shirt. ... "
" ... It is especially useful when I am traveling. ... "
Comfort
4also
+100%
" ... This probably wastes energy but my wife is more comfortable. ... "
" ... Thanks to Sensi and its setback feature, my home is comfortable everywhere. ... "
" ... i'm also much more comfortable now being able to warm the house well before i arrive from work. ... "
" ... It is my opinion you are better off saving the money, setting a comfortable schedule and forgetting it. ... "
Wash Programs
3+67%
-33%
" ... also being able to just manually adjust is good to. ... "
" ... Tried the cool setting. ... "
As Gift
3christmas, bought, purchased
+100%
" ... This was actually a Christmas gift for someone special. ... I purchased or received as a gift the product like anyone else, just sharing my myriad thoughts and experience with you. ... "
" ... This was a Christmas gift for my oldest son - he just bought a condo - and he installed it easily and says it works great. ... "
" ... Bought this for my boyfriend for Christmas! ... "
Other
3sensor, temperature, remote
+100%
" ... Waiting for remote temperature sensors ... "
" ... Humidity sensor was a nice touch. ... "
" ... These sensors qualify for rebates from National Grid (MA) as well. ... "
Color
3much, blue, display
+100%
" ... You don't really need a thermostate with a color LCD. ... "
" ... Overall, these are fantastic and the blue/white color looks so much better than the green/yellow of some other manufactures units. ... "
" ... Picked this item because of its size and color. ... "
Video Playback
3youtube, watched, video
+100%
" ... I read the instructions and watched a YouTube video. ... "
" ... The videos for installing really help and the unit works great ... "
" ... There are helpful videos to show you what to do. ... "
Overall performance
3friendly
+100%
" ... Very affordable compared to some but gets the job done. ... "
" ... One immediately noticeable benefit is the variable cycle speed/tolerance. ... "
" ... It's pretty instantaneous. ... "
Delivery
3box, plastic
+67%
-33%
" ... I bought it yesterday for $99 on same-day delivery. ... "
" ... It was a great deal and delivery was quick. ... "
Touch Sensitivity
3screen, purchased, color, buttons
+100%
" ... All I have to do is touch it at night and it becomes illuminated. ... "
" ... Color touch screen? ... "
" ... Fyi, I purchased this and the Sensi Touch for downstairs (yeah, I'm guilty of choosing form over function-otherwise I'd have just purchased another ST55) and this seems to be not only more accurate (I had to adjust the touch -3 to get it right) but just better overall because of features like the battery back up. ... "
Storage
3+100%
" ... Currently the space doesn't have guests and its 19 degrees. ... "
" ... Now he can control the audience and lobby from his phone and not have to enter the space. ... "
" ... This product was my first step into the smart home space. ... "
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Specifications
No specs available.