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Emerson ST55U Sensi Wi-fi Smart Home Thermostat

4.4827 product ratings

SMARThOME.DEVICES (17)
85.7% positive feedback

Price:

$64.94

+ US $3.99 shipping

Estimated delivery Sat, May 11 - Thu, May 16

Returns:

No returns, but backed by eBay Money back guaranteeeBay Money back guarantee.

Condition:

New

Compatible with most residential HVAC systems and so easy to install—no common wire (c-wire) required in most applications. 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.

About this product

Product Identifiers

Brand
Emerson
MPN
ST55U
GTIN
0786710559693
UPC
0786710559693
eBay Product ID (ePID)
26034590377

Product Key Features

Smart Home Compatibility
Apple HomeKit, Google Assistant, Amazon Alexa, Samsung SmartThings
Type
12Au7
Connectivity
Wi-Fi

All listings for this product

item 1 Thermostat Emerson ST55U Sensi Wi-fi Smart Home Thermostat
$39.95
item 2 Emerson Sensi ST55U Sensi Smart Thermostat Open Box
$47.99
Free shipping
item 3 Emerson Sensi Wi-Fi Smart Thermostat
$45.95
+$5.00 shipping
item 4 Emerson Sensi Wi-Fi Thermostat for Smart Home White ST55U NEW
$54.99
Free shipping
item 5 Emerson Sensi ST55 Smart Home Thermostat ( open box ) Guaranteed
$64.93
Free shipping
item 6 EMERSON SENSI SMART PROGRAMMABLE THERMOSTAT - WHITE (ST55) BRAND NEW!
$64.94
+$3.99 shipping
item 7 EMERSON SENSI SMART PROGRAMMABLE THERMOSTAT - WHITE ℹST55ℹ BRAND NEW!! FAST SHIP
$69.95
Free shipping

See all 27

4.5

4.5 out of 5 stars based on 27 product ratings

27 product ratings

20 users rated this 5 out of 5 stars
4 users rated this 4 out of 5 stars
0 users rated this 3 out of 5 stars
2 users rated this 2 out of 5 stars
1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 24 reviews

4 out of 5 stars
by coultercJan 29, 2020
Top favorable review
Ok and budget choice
I had an American standard thermostat, made by the same company obviously, as the sensei wifi stat was exactly the same base etc. I snapped it in place with the old base, took a minute to install. The features of the app are ok, but some are reserved for the website that your have to pay for, which is annoying.
Verified purchase: Yes | Condition: New
2 out of 5 stars
by ajs1971Feb 10, 2021
Top critical review
Not worth it for me.
Was VERY hard to get it to connect to WiFi and instructions were ZERO help. Had to search and seach online and on YouTube. A one hour install turned into about 8-9 hrs over 2 days. I don't use my thermostat much and when you put it in off position, you can't use Alexa to turn the unit on. If it's on, you can raise or lower the temperature and that's it. So, I'll be using it manually all the time and I could have gotten a different thermostat for that for half the price.
Verified purchase: Yes | Condition: New
5 out of 5 stars
by robertstinauerSep 06, 2021
The best WiFi thermostat for simplicity and value!
I have installed 3 Sensi WiFi thermostats so far and this one I purchased on EBay will make #4. I also have an Icomfort and Nest that I use as well for my home and rental properties. I also tried to install a Honeywell but I had to take it back. I do have considerable experience with using these. Very simple to install and hook up to your internet. The App screen shows me 3 units at a time. One rental house has two HVAC units and two thermostats so this is valuable to check. The biggest bonus is all WiFi thermostats measure the humidity in the house. Anything over 70% causes mold and this Sensi software allows for humidity settings to run the air or heat automatically to decrease it. It even sends me an email when the humidity exceeds 70%. This Sensi unit also keeps track of the energy used by hours per day. Hands down better than the Nest which has issues shutting the HVAC unit down while you are away and this leads to potential mold. Read any Nest review and this issue comes up all the time. And the Nest costs twice as much.Read full review
Verified purchase: Yes | Condition: New
5 out of 5 stars
by afish49Nov 30, 2021
WIFI integrated thermostat that does not require a "C" wire
One of the few thermostats that will hook up to wifi that does not need a "C" wire. I go away for the winter and will be able to check my home to make sure the furnace is working and adjust the temperature. I can set a schedule for each day of the week with up to four events during each day or I can let it sense that I am home, probably through my phone app, and if I am not it will set the temp down three degrees and raise it back up when I get back home. I wish that I could use both of these together because I set the temperature down at night. it does it without fail. It also keeps my temp at the set point. It does not go down two or three degrees and then come back up to set temp. I have had a couple of different electronic set back thermostats before but this is much easier to set up. Read full review
Verified purchase: Yes | Condition: New
5 out of 5 stars
by bjgallianoJul 27, 2021
Thanks again for an excellent product and easy to install
We found your thermostat to be entirely simple to install especially after having some experience with a Google thermostat that was a monster to do anything with. It sounded simple with all the squishing and pollen but yours is ideal it works beautifully we're so happy with it. The wireless works just beautiful I can check my temperature from anywhere from my cell phone within 1 mile or 3000 miles. Thanks again for an excellent product and easy to install
Verified purchase: Yes | Condition: New

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Picture 1 of 12

Emerson ST55U Sensi Wi-fi Smart Home Thermostat

About this product

Product Identifiers

Product Key Features

All listings for this product

item 1 Thermostat Emerson ST55U Sensi Wi-fi Smart Home Thermostat

item 2 Emerson Sensi ST55U Sensi Smart Thermostat Open Box

item 3 Emerson Sensi Wi-Fi Smart Thermostat

item 4 Emerson Sensi Wi-Fi Thermostat for Smart Home White ST55U NEW

item 5 Emerson Sensi ST55 Smart Home Thermostat ( open box ) Guaranteed

item 6 EMERSON SENSI SMART PROGRAMMABLE THERMOSTAT - WHITE (ST55) BRAND NEW!

item 7 EMERSON SENSI SMART PROGRAMMABLE THERMOSTAT - WHITE ℹST55ℹ BRAND NEW!! FAST SHIP

Ratings and Reviews

Most relevant reviews

Ok and budget choice

Not worth it for me.

The best WiFi thermostat for simplicity and value!

WIFI integrated thermostat that does not require a "C" wire

Thanks again for an excellent product and easy to install

Best Selling in Other Consumer Electronics

Embrlabs Embr Wave Personal Thermostat Heats Cools Kickstarter

Save on Other Consumer Electronics

LUMITEC SEABLAZE X2 UNDERWATER LIGHT DUAL COLOR WHITE BLUE

K18S Anti-Spy RF Signal Detector Hidden Camera Bug Finder GSM Audio Tracker Scan

HUMMINBIRD PC11 POWER CORD

For Craftsman C3 19.2 Volt XCP Lithium Battery PP2011 PP2030 PP2020 130279005 US

The Clapper Wireless Sound Activated On/Off Switch NIB NEW OLD STOCK

Sub Compact Green Pistol Laser Fits SpringField Xd 40 Xdm 3.8 Glock S&W 17 19