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104
Highlights
28
Differences
6
Reactions
0
Likes
Sensi ST55
vs
Sensi ST55U:
104 Highlights & 28 Differences —
So, Which Thermostats Actually Works Better
Discover which thermostat matches your lifestyle with easy-to-understand specs.
What sets Sensi ST55 and Sensi ST55U apart? We looked at their depth, wall plate, wall compatibility & detachable unit and key differences in this complete thermostats face-off.
Supports Wi-Fi Connectivity
Indicates whether the thermostat can connect to a Wi-Fi network for smart features and remote control.
with a difference of 1 points
Wi-Fi Band: 2.4GHz
Specifies supported Wi-Fi frequency bands.
with 4 points higher
Sensi ST55 vs Sensi ST55U: A Detailed Comparison of Smart and Programmable Thermostats
Choosing the right thermostat can significantly impact your home's comfort and energy efficiency. Both the Sensi ST55 and Sensi ST55U are white, wall-mounted thermostats designed primarily for residential use, made in the US, and equipped with voice assistant compatibility. They share cloud connectivity and support for IFTTT integrations, making them suitable for connected smart homes. Both models operate within the same HVAC compatibility range, handle multi-stage heating and cooling systems, and feature standard sensor accuracy for temperature monitoring.
Despite these similarities, their fundamental differences set them apart. The ST55 is a true smart thermostat that offers a larger 5-inch display and guided scheduling, while the ST55U is a programmable device with a smaller, but adjustable brightness 3.5-inch screen and manual scheduling. From battery life to design depth, these distinctions can influence your choice depending on your priorities.
Why the Sensi ST55 Stands Out
The Sensi ST55 boasts a sleek, slim profile with just a 1-inch depth, making it less obtrusive when mounted on the wall. This device is tailored for users who want a straightforward, yet modern smart thermostat experience. Its larger 5-inch display ensures easy readability, though it does lack brightness adjustment; a tradeoff balanced by clear visuals.
One compelling feature is the ST55's implementation of guided scheduling. Unlike manual setups, guided scheduling helps users program their thermostat with step-by-step assistance, reducing setup complexity. This, combined with robust overheat protection, offers peace of mind that this thermostat is both user-friendly and safety-conscious.
The ST55 runs on AA batteries that last up to 12 months, paired with a standby power usage of 0.5 watts, providing efficient energy consumption. It also supports quick recovery from power failures, maintains maintenance alerts, and is compliant with FCC regulations. Overall, it is built to last, with an expected lifespan of 10 years. The humidity operating range supports 0-90%, accommodating diverse residential environments.
The Sensi ST55U's Unique Strengths
The Sensi ST55U might be bulkier, featuring a thickness of 4.76 inches, but it makes up for this with practical features that appeal to users who prefer more control over display settings. Its 3.5-inch screen includes adjustable brightness, allowing customization to suit various lighting conditions and personal preferences.
Battery life is one of the ST55U's biggest selling points, offering a remarkable 24 months of AA battery power, double the duration of the ST55. This reduces the frequency of battery changes, making it ideal for users seeking less maintenance. Like its counterpart, it consumes a low 0.5 watts of standby power and recovers from a power failure smoothly.
Scheduling on the ST55U is done manually, which can appeal to users who prefer full control without guided steps. Despite lacking the overheat protection feature, the ST55U still provides maintenance alerts and supports smart home scenes. It fits well in homes that need dependable programmable temperature control without the frills of full smart thermostat capabilities.
In terms of environmental tolerance, the ST55U operates comfortably within a 90% humidity range. It shares the same FCC compliance and lifespan expectations as the ST55, making it equally reliable in the long term.
Quick Take
The Sensi ST55 excels with its expansive display, guided programming, slim design, and built-in overheat protection, making it an excellent choice for users wanting a modern smart thermostat experience. Meanwhile, the Sensi ST55U shines with its extended 24-month battery life, customizable screen brightness, and straightforward manual scheduling; perfect for those who want a reliable, programmable thermostat with low upkeep.
Bottom Line Recommendation
For homeowners desiring a sleek, user-friendly smart thermostat with advanced safety features and effortless guided setup, the Sensi ST55 clearly stands out as the superior option. Its balance of smart features, slim footprint, and dependable performance earns it the top spot. On the other hand, the ST55U offers a good alternative for those prioritizing battery longevity and adjustable display brightness within a programmable thermostat framework, at a mid-range price point.
Prices currently estimate the ST55 at around $86.99 at Sensi, while the ST55U is available for approximately $99.99 at Amazon. Both offer solid HVAC compatibility, reliable safety alerts, and simple connectivity, so your decision rests on whether you lean more toward smart-friendly guided features or extended battery and manual customization.
Verdict
Winner: Sensi ST55 - Its larger display, guided scheduling, slim profile, and built-in overheat protection deliver a well-rounded smart thermostat experience ideal for most residential users.
Runner-up: Sensi ST55U - Its longer battery life and adjustable brightness cater well to those valuing convenience and manual control at a tolerable price increase.
Side by side. The numbers. The features. No drama.
Looking for a smart comparison between Sensi ST55 and Sensi ST55U? We lined up every useful detail — from specs and user reviews to pros, cons, and pricing — so you can see how these thermostats really compare in the wild.
Indicates the country where the thermostat is manufactured or assembled.
In the battle of Country of Manufacture,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Country of Manufacture on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Programmability Type
What type of programmability does it support?
75
Sensi ST55
0Votes
7-Day
74
Sensi ST55U
0Votes
7-Day
Sensi ST55
Programmability for a full 7-day cycle enables distinct settings for every day, offering comprehensive energy management and comfort.
Sensi ST55U
The thermostat supports 7-Day programmability, allowing users to set individual schedules for each day of the week for personalized comfort and efficiency.
Defines scheduling and automation capability.
In the battle of Programmability Type,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Programmability Type on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Thermostat Category
What category of thermostat is this?
95
Sensi ST55
1Votes
Smart
54
Sensi ST55U
0Votes
Programmable
vs
Thermostat Category
Sensi ST55 is categorized as a Smart thermostat while Sensi ST55U is a Programmable thermostat. This means ST55 offers more dynamic smart capabilities, making it ideal for customers seeking advanced automation.
Indicates the functional category of the thermostat.
In the battle of Thermostat Category,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
41 score
measurement.
Based on community votes for Thermostat Category,
Sensi ST55 ◉ earned
1 votes,
more than
Sensi ST55U ◉,
which got 0 votes.
I like that the Sensi ST55 is classified as a smart thermostat while the ST55U is programmable so I get more advanced features with the ST55.
See more
Intended Use
What is the intended use of this thermostat?
25
Sensi ST55
0Votes
Residential
24
Sensi ST55U
0Votes
Residential
Sensi ST55
This model is designed specifically for residential use, focusing on home comfort and energy management.
Specifies the primary usage environment.
In the battle of Intended Use,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Intended Use on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Installation Location
Where can this thermostat be installed?
45
Sensi ST55
0Votes
Indoor
44
Sensi ST55U
0Votes
Indoor
Sensi ST55
Designed exclusively for indoor installation, suitable for controlled interior environments.
Describes where the thermostat is designed to be installed.
In the battle of Installation Location,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Installation Location on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Smart Thermostat
Is this a smart thermostat?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
This device is a smart thermostat, meaning it offers advanced connectivity and automated management beyond basic programmable functions.
Indicates whether the thermostat has smart connectivity features.
In the battle of Smart Thermostat,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Smart Thermostat on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Voice Assistant
Does it support voice assistants?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Voice assistant integration is supported, enabling voice commands for controlling the thermostat through compatible smart home systems.
Indicates compatibility with voice assistants.
In the battle of Voice Assistant,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Voice Assistant on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Mobile App
Can it be controlled using a mobile app?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
A mobile app is available for this model, offering remote control capabilities from smartphones or tablets. This enhances convenience and flexibility for users.
Confirms whether the thermostat can be controlled via mobile app.
In the battle of Mobile App,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Mobile App on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
User Interface Type
What type of user interface does it have?
35
Sensi ST55
0Votes
Button-Based
34
Sensi ST55U
0Votes
Button-Based
Sensi ST55
The user interface is button-based, which provides tactile feedback and is intuitive for users who prefer physical controls over touchscreens.
Describes the primary interface design.
In the battle of User Interface Type,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
User Interface Type on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Language Support
What languages are supported?
78
Sensi ST55
0Votes
English, Spanish, French
94
Sensi ST55U
0Votes
English
Sensi ST55
This thermostat supports multiple languages including English, Spanish, and French, making it accessible to a diverse range of users.
Lists supported display or app languages.
In the battle of Language Support,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
, delivering
lower
16 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Language Support on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Release Year
What year was this thermostat released?
70
Sensi ST55
0Votes
2017
56
Sensi ST55U
0Votes
2014
Sensi ST55U
The device was released in the year 2014, indicating the generation and technology era of the thermostat.
Indicates the year the thermostat model was officially released to the market.
In the battle of Release Year,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
14 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Release Year on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Product Type
What type of product is this?
45
Sensi ST55
0Votes
Thermostat
44
Sensi ST55U
0Votes
Thermostat
Defines the core product classification.
In the battle of Product Type,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Product Type on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Control Method
How do you control this thermostat?
45
Sensi ST55
0Votes
Button
94
Sensi ST55U
0Votes
App
Explains how users interact with the thermostat.
In the battle of Control Method,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
, delivering
lower
49 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Control Method on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Learning Capability
Does it learn your temperature preferences?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Shows whether the device adapts automatically to user behavior.
In the battle of Learning Capability,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Learning Capability on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Replaceable Faceplate
Is the faceplate replaceable?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Indicates whether the front plate can be swapped.
In the battle of Replaceable Faceplate,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Replaceable Faceplate on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Modular Design
Does it have a modular design?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Shows whether components can be upgraded or replaced.
In the battle of Modular Design,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Modular Design on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
The Depth of Sensi ST55 is only 1 inch compared to 4.76 inches for Sensi ST55U. The slimmer ST55 is better suited for compact spaces and modern aesthetics.
Measures how far the thermostat protrudes from the wall.
In the battle of Depth,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
lower
3.8 inch
measurement.
Based on community votes for Depth,
Sensi ST55 ◉ earned
1 votes,
more than
Sensi ST55U ◉,
which got 0 votes.
In the battle of Tamper Resistant Design,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Tamper Resistant Design on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Width
What is the width of the thermostat?
5
inch
0Votes
6.42
inch
0Votes
Sensi ST55
The width of the thermostat is 5 inches (12.7 cm), providing a moderate footprint suitable for most wall spaces.
Indicates the horizontal size of the thermostat.
In the battle of Width,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
lower
1.4 inch
measurement.
Don’t keep it to yourself — be the first to react and review the
Width on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Height
What is the height of the thermostat?
3.5
inch
0Votes
1.89
inch
0Votes
Sensi ST55
The thermostat height is 3.5 inches (8.89 cm), contributing to a compact and unobtrusive wall presence.
Indicates the vertical size of the thermostat.
In the battle of Height,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
, delivering
higher
1.6 inch
measurement.
Don’t keep it to yourself — be the first to react and review the
Height on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Weight
How much does the thermostat weigh?
0.85
lbs
0Votes
1.22
lbs
0Votes
Sensi ST55
The thermostat weighs 0.85 lbs (0.39 kg), making it lightweight and easy to handle during installation.
Shows how heavy the thermostat unit is.
In the battle of Weight,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
lower
0.4 lbs
measurement.
Don’t keep it to yourself — be the first to react and review the
Weight on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Mounting Type
How is the thermostat mounted?
95
Sensi ST55
0Votes
Wall-Mounted
94
Sensi ST55U
0Votes
Wall-Mounted
Sensi ST55
This thermostat is designed to be mounted on a wall, a common and convenient placement option for user access and sensor accuracy.
Specifies how the thermostat is mounted.
In the battle of Mounting Type,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Mounting Type on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Installation Difficulty Level
How difficult is installation?
95
Sensi ST55
0Votes
Easy
94
Sensi ST55U
0Votes
Easy
Sensi ST55
Installation difficulty level is easy, indicating that typical users or technicians can install this thermostat without special tools or extensive expertise.
Rates how complex installation is.
In the battle of Installation Difficulty Level,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Installation Difficulty Level on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Surface Mount
Does it support surface mounting?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Surface Mount installation is supported, meaning the thermostat mounts on the wall surface rather than being recessed.
Indicates surface mount compatibility.
In the battle of Surface Mount,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Surface Mount on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Installation Accessories
Are installation accessories included?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Installation accessories are included to facilitate the thermostat mounting and setup process.
Confirms inclusion of mounting hardware.
In the battle of Installation Accessories,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Installation Accessories on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Trim Plate Compatibility
Is it compatible with trim plates?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Shows if trim plates can be added for coverage.
In the battle of Trim Plate Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Trim Plate Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Installation Orientation
What orientation can it be installed in?
45
Sensi ST55
0Votes
Portrait
44
Sensi ST55U
0Votes
Portrait
Defines allowed mounting orientation.
In the battle of Installation Orientation,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Installation Orientation on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Wiring Requirement
What wiring is required for this thermostat?
50
Sensi ST55
0Votes
No C-Wire, Low Voltage
Who knows?
0Votes
Sensi ST55U
(Help us out by suggesting one!)
Specifies the wiring configuration required for proper installation.
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Wiring Requirement on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Professional Installation Recommended
Is professional installation recommended?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Advises whether expert installation is suggested.
In the battle of Professional Installation Recommended,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Professional Installation Recommended on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Recessed Mount
Does it support recessed mounting?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Indicates recessed mounting capability.
In the battle of Recessed Mount,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Recessed Mount on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Sensi ST55 features a larger 5-inch display, while Sensi ST55U has a smaller 3.5-inch display. ST55’s bigger screen provides easier viewing and interaction, preferable for users valuing display clarity.
Indicates the diagonal size of the display.
In the battle of Display Size,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1.5 inch
measurement.
Don’t keep it to yourself — be the first to react and review the
Display Size on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Adjustable Brightness is not available on Sensi ST55 but is supported by Sensi ST55U. Users prioritizing screen brightness control might prefer the ST55U model.
Allows users to change screen brightness.
In the battle of Adjustable Brightness,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Based on community votes for Adjustable Brightness,
Sensi ST55 ◉ earned
0 votes,
less than
Sensi ST55U ◉,
which got 1 votes.
Neither Sensi ST55 nor ST55U support API Access, limiting direct third-party integrations but ensuring a controlled ecosystem.
Indicates availability of developer APIs.
In the battle of API Access,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
API Access on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Wi-Fi Band
Which Wi-Fi bands are supported?
31
Sensi ST55
0Votes
2.4GHz
27
Sensi ST55U
0Votes
2.4GHz
Sensi ST55
Wi-Fi band support includes 2.4 GHz, which is widely compatible with most routers and offers good range for home connectivity.
Sensi ST55U
Wi-Fi connectivity operates on the 2.4 GHz band, which offers good range and compatibility with most home wireless networks.
Specifies supported Wi-Fi frequency bands.
In the battle of Wi-Fi Band,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
4 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Wi-Fi Band on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Firmware Update Method
How are firmware updates performed?
82
Sensi ST55
0Votes
OTA
79
Sensi ST55U
0Votes
OTA
Sensi ST55
Firmware updates are performed over the air (OTA), allowing users to keep the device up to date conveniently without needing physical connections.
Describes how firmware updates are applied.
In the battle of Firmware Update Method,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
3 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Firmware Update Method on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Wi-Fi Connectivity
Does the thermostat support Wi-Fi connectivity?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Indicates whether the thermostat can connect to a Wi-Fi network for smart features and remote control.
In the battle of Wi-Fi Connectivity,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Wi-Fi Connectivity on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Bluetooth Connectivity
Does it support Bluetooth?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Shows whether Bluetooth connectivity is available.
In the battle of Bluetooth Connectivity,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Bluetooth Connectivity on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Thread
Does it support Thread?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Indicates support for the Thread protocol.
In the battle of Thread,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Thread on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Local Control Capability
Can it be controlled locally without internet?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Indicates whether local control works without internet.
In the battle of Local Control Capability,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Local Control Capability on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Smart Home Ecosystem Compatibility
Which smart home ecosystems are supported?
82
Sensi ST55
0Votes
Alexa, Google Home
80
Sensi ST55U
0Votes
Alexa, Google Home
Lists supported smart home platforms.
In the battle of Smart Home Ecosystem Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
2 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Smart Home Ecosystem Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Remote Access
Can it be accessed remotely?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Allows control from outside the home.
In the battle of Remote Access,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Remote Access on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Data Encryption
Is data encrypted?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Protects transmitted user data.
In the battle of Data Encryption,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Data Encryption on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
User Account Required
Is a user account required?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Indicates if an online account is mandatory.
In the battle of User Account Required,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
, delivering
equal
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
User Account Required on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Multi-User
Can multiple users access it?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Allows multiple users to access controls.
In the battle of Multi-User,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Multi-User on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Geofencing
Does it support geofencing?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Adjusts settings based on user location.
In the battle of Geofencing,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Geofencing on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Who knows?
0Votes
Sensi ST55
(Help us out by suggesting one!)
Who knows?
0Votes
Sensi ST55U
(Help us out by suggesting one!)
Shows supported humidity measurement range.
Don’t keep it to yourself — be the first to react and review the
Humidity Range on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Temperature Sensor Type
What type of temperature sensor is used?
65
Sensi ST55
0Votes
Digital
64
Sensi ST55U
0Votes
Digital
Sensi ST55
Uses a digital temperature sensor, providing more precise and responsive measurements compared to analog sensors.
Defines the technology used to measure temperature.
In the battle of Temperature Sensor Type,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Temperature Sensor Type on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Outdoor Temperature
Does it support outdoor temperature data?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
The thermostat supports an Outdoor Temperature sensor, which can provide external temperature data for enhanced heating and cooling decisions.
Allows use of outdoor temperature data.
In the battle of Outdoor Temperature,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Outdoor Temperature on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Sampling Rate
How often does the thermostat sample data?
45
Sensi ST55
0Votes
Standard
44
Sensi ST55U
0Votes
Standard
Sensi ST55
The sampling rate for sensor data is standard, providing dependable readings without excessive power consumption.
Describes how frequently the thermostat sensors collect and update environmental data.
In the battle of Sampling Rate,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Sampling Rate on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Real-Time Monitoring
Does it offer real-time monitoring?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Real-Time Monitoring is available, enabling continuous tracking of environmental conditions and system performance for better control.
Provides live environmental data.
In the battle of Real-Time Monitoring,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Real-Time Monitoring on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Humidity Sensor
Does it measure humidity?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Indicates whether humidity is measured.
In the battle of Humidity Sensor,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Humidity Sensor on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Occupancy Detection
Can it detect room occupancy?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Determines if people are present in the space.
In the battle of Occupancy Detection,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Occupancy Detection on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Ambient Light Sensor
Does it detect ambient light?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Adjusts display or behavior based on light.
In the battle of Ambient Light Sensor,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Ambient Light Sensor on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Proximity Sensor
Does it have a proximity sensor?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Detects nearby presence for wake-up actions.
In the battle of Proximity Sensor,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Proximity Sensor on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Number of Remote Sensors Supported
How many remote sensors are supported?
Who knows?
0Votes
Sensi ST55
(Help us out by suggesting one!)
0
Sensi ST55U
0Votes
0
Specifies how many remote sensors can connect.
Don’t keep it to yourself — be the first to react and review the
Number of Remote Sensors Supported on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Sensor Calibration
Can the sensors be calibrated?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Allows manual or automatic sensor adjustment.
In the battle of Sensor Calibration,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Sensor Calibration on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Temperature Range
What temperature range is supported?
60
Sensi ST55
0Votes
45-90°F
74
Sensi ST55U
0Votes
45-99°F
Indicates supported temperature measurement range.
In the battle of Temperature Range,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
, delivering
lower
14 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Temperature Range on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Energy Usage Monitoring
Does it monitor energy usage?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Tracks HVAC energy usage estimates.
In the battle of Energy Usage Monitoring,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Energy Usage Monitoring on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
System Health Monitoring
Does it monitor system health?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Monitors HVAC system performance and alerts.
In the battle of System Health Monitoring,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
System Health Monitoring on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Sensi ST55 offers Guided Scheduling, simplifying setup, whereas Sensi ST55U uses Manual Scheduling, requiring more user input. ST55 is better for ease of use in scheduling.
Defines how schedules are created and managed.
In the battle of Scheduling Type,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
22 score
measurement.
Based on community votes for Scheduling Type,
Sensi ST55 ◉ earned
1 votes,
more than
Sensi ST55U ◉,
which got 0 votes.
Smart Home Scenes support applies to both Sensi ST55 and ST55U, allowing integration with scenes that combine multiple smart devices.
Integrates with smart home scenes.
In the battle of Smart Home Scenes,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Smart Home Scenes on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Event-Based Triggers
Are event-based triggers supported?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Event-based triggers enable automation of HVAC functions based on specific conditions or occurrences, enhancing convenience and efficiency.
Sensi ST55U
Event-Based Triggers allow the thermostat to respond automatically to specific events or conditions, providing dynamic and efficient climate control.
Responds to events like occupancy changes.
In the battle of Event-Based Triggers,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Event-Based Triggers on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Demand Response
Does it support demand response?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Demand response compatibility means the thermostat can participate in programs to reduce power consumption during peak demand periods.
Sensi ST55U
Demand Response capability is offered, allowing the thermostat to participate in utility programs to reduce energy usage during peak demand times.
Participates in utility demand programs.
In the battle of Demand Response,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Demand Response on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Scheduling Capability
Does it support scheduling?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
The device supports scheduling capability, enabling programmed temperature control throughout the day for energy savings.
Indicates whether scheduling is supported.
In the battle of Scheduling Capability,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Scheduling Capability on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Daily Scheduling
Can you set daily schedules?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Daily scheduling capability allows programming different temperature settings for each day, enhancing comfort and energy management.
Allows temperature changes by day.
In the battle of Daily Scheduling,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Daily Scheduling on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Weekly Scheduling
Can you set weekly schedules?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Weekly Scheduling is enabled, which allows programming temperature setpoints across a full week for tailored comfort.
Allows different schedules across the week.
In the battle of Weekly Scheduling,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Weekly Scheduling on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Vacation Mode
Is there a vacation mode?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Vacation mode helps save energy by maintaining reduced HVAC activity during extended absences. Users can set this mode to avoid unnecessary heating or cooling.
Maintains efficiency when away for long periods.
In the battle of Vacation Mode,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Vacation Mode on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Away Mode
Does it support away mode?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Away Mode is active, enabling the thermostat to maintain energy savings by adjusting temperature settings when the home is unoccupied.
Adjusts settings when occupants leave.
In the battle of Away Mode,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Away Mode on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Temperature Presets
Are temperature presets available?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Temperature Presets are available for quick selection of common temperature settings, improving usability.
Allows quick switching between preset temps.
In the battle of Temperature Presets,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Temperature Presets on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Automation Rules
Can automation rules be created?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Automation Rules are supported, allowing users to customize settings and integrate with smart home automation for enhanced convenience.
Enables rule-based automation logic.
In the battle of Automation Rules,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Automation Rules on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Learning Schedule
Does it learn your schedule?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Learns user habits over time.
In the battle of Learning Schedule,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Learning Schedule on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Time-Based Triggers
Are time-based triggers supported?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Executes actions at set times.
In the battle of Time-Based Triggers,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Time-Based Triggers on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Weather-Based Automation
Does it use weather data for automation?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Adjusts based on weather conditions.
In the battle of Weather-Based Automation,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Weather-Based Automation on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Utility Program Compatibility
Is it compatible with utility programs?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Works with energy provider programs.
In the battle of Utility Program Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Utility Program Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Cooling System Compatibility is the same for Sensi ST55 and ST55U, supporting Central AC and Heat Pump systems, ideal for diverse cooling needs.
Indicates supported cooling system types.
In the battle of Cooling System Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
2 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Cooling System Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Fan Control
Can it control the HVAC fan?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Fan control capability is included, allowing manual or automatic operation of the HVAC system fan for improved air circulation.
Sensi ST55U
Fan Control is included, giving the user manual or automated control over the HVAC system fan operation.
Allows independent fan operation control.
In the battle of Fan Control,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Fan Control on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Heating System Compatibility
What heating systems are supported?
42
Sensi ST55
0Votes
Furnace, Boiler, Heat Pump
41
Sensi ST55U
0Votes
Furnace, Boiler, Heat Pump
Sensi ST55
Heating system compatibility includes furnaces, boilers, and heat pumps, accommodating a wide variety of residential heating configurations.
Indicates supported heating system types.
In the battle of Heating System Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Heating System Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Multi-Stage Cooling
Does it support multi-stage cooling?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Multi-stage cooling capability means the thermostat can manage complex cooling systems with multiple compressor stages, improving comfort and efficiency.
Indicates support for multi-stage cooling.
In the battle of Multi-Stage Cooling,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Multi-Stage Cooling on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Humidifier
Does it support a humidifier?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Humidifier support is included, allowing integration with compatible humidifier systems to maintain optimal indoor humidity levels.
Supports integrated humidifier control.
In the battle of Humidifier,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Humidifier on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Boiler Compatibility
Is it compatible with boilers?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
vs
Boiler Compatibility
Both thermostats are compatible with Boilers, making them a fitting choice for homes with boiler heating systems.
Indicates compatibility with boiler systems.
In the battle of Boiler Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Boiler Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Oil Furnace Compatibility
Does it support oil furnaces?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Oil furnace compatibility allows the thermostat to control heating systems powered by oil furnaces, maintaining versatility.
Indicates support for oil furnaces.
In the battle of Oil Furnace Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Oil Furnace Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Heat Pump Compatibility
Does it support heat pumps?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Indicates support for heat pump systems.
In the battle of Heat Pump Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Heat Pump Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Dual Fuel
Does it support dual fuel systems?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Supports dual-fuel HVAC configurations.
In the battle of Dual Fuel,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Dual Fuel on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Dehumidifier
Does it support a dehumidifier?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Supports integrated dehumidifier control.
In the battle of Dehumidifier,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Dehumidifier on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Ventilator
Does it support ventilators?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Supports ventilation systems like HRV/ERV.
In the battle of Ventilator,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Ventilator on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Radiant Heating Compatibility
Does it support radiant heating?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Supports radiant floor or panel heating.
In the battle of Radiant Heating Compatibility,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Radiant Heating Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Electric Baseboard Compatibility
Does it support electric baseboards?
No
0Votes
Sensi ST55
No
0Votes
Sensi ST55U
Indicates compatibility with electric baseboards.
In the battle of Electric Baseboard Compatibility,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Electric Baseboard Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
System Voltage Compatibility
What system voltages are supported?
75
Sensi ST55
0Votes
Low Voltage
74
Sensi ST55U
0Votes
Low Voltage
Specifies supported control voltages.
In the battle of System Voltage Compatibility,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
System Voltage Compatibility on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Zone Control
Does it support zone control?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Allows control of HVAC zones.
In the battle of Zone Control,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Zone Control on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
The Battery Life of Sensi ST55 is 12 months, whereas Sensi ST55U offers a longer battery life of 24 months. For users prioritizing less frequent battery changes, ST55U is preferable.
Estimates how long batteries last under normal use.
In the battle of Battery Life,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
, delivering
lower
12.0 months
measurement.
Based on community votes for Battery Life,
Sensi ST55 ◉ earned
0 votes,
less than
Sensi ST55U ◉,
which got 1 votes.
Operating Humidity Range for Sensi ST55 is 0-90%, while Sensi ST55U operates at 90%. ST55 offers a broader humidity tolerance, suitable for varied climate conditions.
Specifies allowable humidity levels during operation.
In the battle of Operating Humidity Range,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
32 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Operating Humidity Range on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Electrical Safety Certification
What electrical safety certifications does it have?
75
Sensi ST55
0Votes
UL
69
Sensi ST55U
0Votes
UL, CSA
Sensi ST55
The thermostat meets UL electrical safety certification standards, ensuring compliance with important safety requirements.
Lists electrical safety certifications.
In the battle of Electrical Safety Certification,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
6 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Electrical Safety Certification on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Fail-Safe Mode
Does it have a fail-safe mode?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
Fail-safe mode is implemented to protect system functionality and prevent damage by defaulting to safe operating parameters if issues are detected.
Ensures safe behavior during failure.
In the battle of Fail-Safe Mode,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Fail-Safe Mode on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
System Alerts
Does it provide system alerts?
Yes
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55
System alerts notify users of operational statuses or potential problems, helping maintain HVAC system health.
Notifies users of system issues.
In the battle of System Alerts,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
System Alerts on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Diagnostic Tools
Are diagnostic tools available?
No
0Votes
Sensi ST55
Yes
0Votes
Sensi ST55U
Sensi ST55U
Diagnostic Tools are included, helping users and technicians identify and resolve issues efficiently.
Provides tools for troubleshooting.
In the battle of Diagnostic Tools,
Sensi ST55 ◉ is
worse than
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Diagnostic Tools on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Operating Temperature Range
What is the operating temperature range?
55
Sensi ST55
0Votes
32-104°F
55
Sensi ST55U
0Votes
32-105°F
Defines the ambient temperature range for safe operation.
In the battle of Operating Temperature Range,
Sensi ST55 ◉ is
same as
Sensi ST55U ◉
.
Don’t keep it to yourself — be the first to react and review the
Operating Temperature Range on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
Storage Temperature Range
What is the storage temperature range?
73
Sensi ST55
0Votes
-4-140°F
72
Sensi ST55U
0Votes
-4-140°F
Indicates safe temperature range when not in use.
In the battle of Storage Temperature Range,
Sensi ST55 ◉ is
better than
Sensi ST55U ◉
, delivering
higher
1 score
measurement.
Don’t keep it to yourself — be the first to react and review the
Storage Temperature Range on Sensi ST55 ◉
vs Sensi ST55U ◉ and help others decide!
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Moderator
Recaptor
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