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Honeywell Home T9 WiFi Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and Google Assist White

4.5 4.5 out of 5 stars 1,697 ratings

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Rebates starting at $30 available from energy providers for 20149. Terms apply. See rebates
A. Wi-Fi Thermostat

Purchase options and add-ons

Brand Honeywell Home
Model Name RCHT9510WFW
Product Dimensions 0.94"D x 3.7"W x 4.92"H
Controller Type IFTTT, Google Assistant, Amazon Alexa, iOS, Android
Special Feature Energy Star certified, Wi-Fi enabled, Wireless Smart Sensor ready

About this item

  • ENERGY STAR CERTIFIED. See your energy use in the Monthly Energy Report, and help save even more with a schedule that adapts to your lifestyle.
  • SAVE ENERGY AND GET REWARDED by checking with your energy provider about available energy savings rebates to save on your purchase (rebate finder link above). Plus, eligible customers can enroll in their local Utility's "DEMAND RESPONSE PROGRAM" which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.
  • AUTO HOME AND AWAY MODE. Adjust your thermostat from anywhere with your mobile device, or let your home automatically react to your schedule with geofencing.
  • MULTI-ROOM FOCUS. Add Smart Room Sensors to focus the temperature on multiple rooms for comfort where it matters to you. (Sensors sold separately). Wire Configuration - 4-Wire. Supports Wi-Fi 802.11 B/G/N 2.4 and 5 GHz.
  • COMPATIBLE WITH: Forced air (gas, oil or electric), hot water and steam, and heat pumps with electric backup. Does NOT work with electric baseboard heat (120-240V). C-Wire Required.
  • SMARTER, SIMPLER SETUP. Everything you need comes in the box, including a power adapter so that the T9 works in most homes. The T9 intuitively identifies your home’s heating and cooling type, making it easy to do it yourself.
  • Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.
  • Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.
See more product details

Customer ratings by feature

Touch Screen
4.4 4.4
Easy to install
4.2 4.2
Alexa integration
3.7 3.7
Tech Support
3.4 3.4

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From the manufacturer

Comfort control

Welcome to ‘Just Right’

Sense the temperatures in the places that matter most with the T9 Smart Thermostat. Focus on the rooms you choose by setting a schedule — or let the sensors respond to your lifestyle, helping save energy when you leave and preparing that ideal temp for your return.

T9 Smart Thermostat
T9's Smart Room Sensor
Smart Room Sensors (sold separately)

Whole home coverage

Place Smart Room Sensors around your home to see each room’s temperature and humidity. Focus on specific rooms you choose or let the sensors focus on rooms people are in.

Sensors reach up to 200 feet, spreading across the home to increase the quality of signal and data sent to the T9 thermostat.

Automatic room control

T9 Smart Thermostat Smart Room Sensors helping a couple sleep comfortably

Help everyone sleep comfortably

“Alexa, check the temperature of the bedroom.” Focus your T9 Smart Thermostat on specific rooms, such as bedrooms, so everyone can get a cozy night’s sleep.

Requires Smart Room Sensor per monitored area.

T9 Smart Thermostat cooling the house as mom comes home with the kids

Auto home and away mode

With the Resideo app, using geofencing the T9 knows when you’re coming and going, so no matter your schedule, you can always come home to comfort and save energy when you’re away.

Simple setup and savings

Easily installing the T9 Smart Thermostat at home

Easy install

Feed your wires into the lettered ports of the wall plate, close the plate, and snap your T9 onto the wall. Then the T9 will self-configure, guiding you through a simple setup.

Woman looking at the monthly energy report from Honeywell Home on her smartphone

Monthly energy reports

Track your heating and cooling trends and get tips on reducing energy use so that you can help save on your energy bills.

Find the connected thermostat for you

T9 WIFI Smart Thermostat

T9 Smart Thermostat

T5 Smart Thermostat

T5 Smart Thermostat

Wi-Fi Smart Color Thermostat

Smart Color Thermostat

Wi-Fi 7-Day Programmable Thermostat

WiFi 7-Day Thermostat

Customer Reviews
4.5 out of 5 stars
1,697
4.3 out of 5 stars
5,098
4.4 out of 5 stars
17,537
4.3 out of 5 stars
13,999
Display
Graphical Color Touchscreen Touchscreen Custom Color Touchscreen Easy to Read With Backlight
Wi-Fi
2.4 GHZ and 5.0 GHz 2.4 GHZ 2.4 GHZ 2.4 GHZ
Auto Home/Away Mode
Indoor/Outdoor Temp/Humidity
Remote sensor compatibility
Color
White Black Silver White
Dimensions (W x H x D)
3.7 x 4.92 x 0.94 in 4.06 x 4.06 x 1.25 in 4.5 x 3.5 x 0.88 in 5.75 x 3.5 x 1.5 in

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Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Honeywell Home T9 WiFi Smart Thermostat, Smart Room Sensor Ready, Touchscreen Display, Alexa and Google Assist White


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Product guides and documents

Product Description

WELCOME TO 'JUST RIGHT'. Works with Smart Room Sensors (sold separately) to focus on the rooms you choose by setting a schedule, or let the sensors focus on rooms people are in. Simple install for a DIY project. The T9 intuitively identifies your home’s heating and cooling type, guiding you through a simple setup, and making it easy to do it yourself. Control the T9 using the Honeywell Home app or through Amazon Alexa, Google Assistant, Microsoft Cortana, and more. The T9 works with utility programs across the US to bring you even more savings.

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Price-17% $149.87
List:$179.99
-10% $89.99
List:$99.99
-20% $167.00
List:$209.99
$21.98$8.99$39.99
Delivery
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Customer Ratings
Easy to install
4.2
4.1
4.0
4.8
4.8
4.8
Tech Support
3.4
3.0
3.2
4.6
4.8
Value for money
4.1
3.8
4.1
5.0
3.9
Temperature Control
3.8
4.1
5.0
5.0
4.2
Touch Screen
4.4
4.6
4.6
Sold By
DirectSupplyClub
ANR TECH
DirectSupplyClub
Amazon.com
Aries Yellow
Amazon.com
control method
application, touch, voice
application, touch
voice
application
connectivity protocol
Wi-Fi
Wi-Fi
Wi-Fi
Wi-Fi
power source
Electric
Corded Electric
Battery Powered
Adaptor
Corded Electric
Air Powered
controller type
Amazon Alexa, Android, Google Assistant, iOS, IFTTT
Amazon Alexa, Apple HomeKit, Google Assistant, iOS, Android
Amazon Alexa, Vera, Google Assistant, SmartThings
Hand Control
Temperature Control
material
Plastic
Plastic
Plastic
Plastic
Plastic
shape
Rectangular
Square
Rectangular
Square

Important information

Bulb Voltage

240 volts

Customer reviews

4.5 out of 5 stars
4.5 out of 5
1,697 global ratings

Customers say

Customers like the ease of installation and interface of the hvac control thermostat. For example, they mention the large touch screen, intuitive controls, and fairly easy to integrate into their network. Customers are also impresseded with value, and appearance. That said, some complain about the connectivity issues and performance.

AI-generated from the text of customer reviews

113 customers mention95 positive18 negative

Customers find the installation of the HVAC control thermostat to be easy. They mention that the furnace/ac system was super easy to setup, with intuitive controls and a large touch screen. They also say that the device is fairly easy to integrate into their network and monitoring/security system. The programming is basic, but adequate, with enough time periods to program. Customers also like how easy it is to connect to wifi and the app, and to set, monitor, or adjust temperature from their phone.

"...The best part is that it was literally plug and play. I removed the T6 and plugged the T9 into the same wall adapter...." Read more

"...I found the app to be intuitive and easy to use.Here is what sets the T9 apart. The remote temperature sensors!!!..." Read more

"...The room extenders are great as they were easy to add and let you tell the thermostat what to weigh on heating/cooling decisions...." Read more

"...T9 itself is Easy to install AS LONG AS YOU HAVE A ‘COMMON’ WIRE in YOUR EXISTING THERMOSTAT- in that case your install is probably 15 minutes...." Read more

23 customers mention18 positive5 negative

Customers like the interface of the thermostat. They say it's intuitive, easy to use, and excellent for remote control. Some say the app is basic but works. Overall, most are satisfied with the user interface.

"...It is great being able to place sensors inside of rooms instead of having to hope that your hallway is the right temperature...." Read more

"...Here is what sets the T9 apart. The remote temperature sensors!!! We have two rooms that are often 3-5 degrees different from the rest of the house...." Read more

"...The T9 controls my home HVAC very well and we can control it through the app. I do not use the room sensors...." Read more

"Large touch screen, easy and intuitive controls.Excellent app for remote control of the unit." Read more

18 customers mention15 positive3 negative

Customers like the value of the thermostat. They mention that it is an excellent item, very affordable, and worth the price. Some say that the new efficiency will save them money and that their electric bill has gone down.

"...This unit carries a higher price but it is worth it. Oh, be sure to also buy a wall plate. It is an attractive, high tech thermostat." Read more

"...A little different programming it and hooking it up to wifi but well worth the money...." Read more

"...Price/Value: The T9 is priced very well compared to the other options and offers most of the same features and benefits-..." Read more

"...The T9 IMMEDIATELY saved me money. Connected to Alexa easily and we LOVED the geofencing.Was thrilled with the T9…And then disaster!..." Read more

17 customers mention17 positive0 negative

Customers are satisfied with the appearance of the thermostat. They mention that it looks good, is appealing, and has a simple, clean design. The display is nice and appreciate the orange background. The thermostat looks clean on the wall and is easy to control with their phone. Overall, most are happy with the product's appearance.

"...The product looks good and it is appealing. The installation was somewhat easy but they do make it more difficult with the c wire confusion...." Read more

"The thermostat looks clean on the wall and I do like how easy it is to control with my phone...." Read more

"...The display is nice and I appreciate how it shows orange background for heating and blue for cooling, when it's actively running the hvac...." Read more

"...Oh, be sure to also buy a wall plate. It is an attractive, high tech thermostat." Read more

119 customers mention75 positive44 negative

Customers are mixed about the performance of the HVAC control thermostat. Some mention that it works well, and others say that they could not get it to work properly. Some say that it doesn't work with Google Home anymore, and that it wears out quickly.

"...They worked well with the Ring system that came with the house, but that control is limited to the mode and temperature...." Read more

"...It DIDNT TURN ON EITHER; so next Tech told me I had another defective unit after validating that the ‘C’ wire going to T9 did in fact provide..." Read more

"...I also found the display to be of high quality, and it was as easy to use as my iphone touch screen...." Read more

"...I bought two room extenders, and they work great. I have an older house, and the thermostat was in a hallway that was off the main area...." Read more

71 customers mention48 positive23 negative

Customers are mixed about the adjustability of the thermostat. Some mention that they can change the temperature settings from anywhere there's WiFi, it's fantastic to be able to monitor or adjust temperature from another room, or remotely, and it makes it possible to more easily balance the temperature throughout your home. However, others say that the temperature reading may or may not be accurate, the app is clunky, and the T9 unit only goes down to 50 degrees.

"...With the Resideo app you can easily tweak the settings from anywhere and you can program each day individually...." Read more

"...However, the T9 also allows you to select which temperature sensor is used to determine the room temperature during different times of the day!..." Read more

"...APP is VERY BUGGY TOO - it will often show BOTH WRONG INSIDE TEMP & WRONG TEMP SETTING, which requires killing app and starting it again...." Read more

"...The main reason I bought this was the auto switch between heat/cool and the fan circulate mode...." Read more

47 customers mention14 positive33 negative

Customers are dissatisfied with the connectivity of the HVAC control thermostat. They mention that the page gets stuck loading and never connects, the app has problems maintaining connection with the WiFi, and the thermostat loses connection. Some customers also mention that it seems to pick a random number and heat. Additionally, some customers report that the thermostat cannot connect to beam forming devices that handle 2.4 and 5 WiFi.

"Easy to install, mechanically, but was challenging to hook up to wifi and coordinate with phone app...." Read more

"...When it's connected, it's wonderful. However, it frequently disconnects from Wi-Fi and then becomes unavailable in the app until reset...." Read more

"...I used it like this for about a month now and had zero issues with connectivity...." Read more

"...Those models have buggy networking firmware resulting in unreliable network connection, which led me to return them and purchase this Honeywell T9..." Read more

It has all the modern features, plus more! Yes, great remote temperature sensing included too!
5 Stars
It has all the modern features, plus more! Yes, great remote temperature sensing included too!
I have been slowly converting my home to a "smart house". So, I have experienced a lot of smart device successes and failures! That said, the T9 has certainly been a success! By success, I mean it provides all the modern features you would want from a wifi connected device, plus a few features not offered by the competition. I found it easy to install and super easy to configure. I appreciate that it supports either 2.4 or 5 GHz wifi networks. I also found the display to be of high quality, and it was as easy to use as my iphone touch screen. I also use the Resideo phone app to control the thermostat. I found the app to be intuitive and easy to use.Here is what sets the T9 apart. The remote temperature sensors!!! We have two rooms that are often 3-5 degrees different from the rest of the house. One of them is our bedroom. I placed a T9 remote sensor in each of the two rooms, and the two rooms are already much more comfortable.Because the T9 allows you to setup the thermostat temperature control at the base unit on the wall, and/or at the remote sensors, I have greater control of the temperature in our house. When using the remote sensor(s), the T9 allows you to select which sensor is used to control the thermostat. The remote sensors can be configured to work in one of two ways: 1) become operational when they detect a person is in the room 2) just to operate as a temperature probe for the room. This is important because the T9 allows you to change how and when the remote sensors are used to control your HVAC system.As a "programmable" thermostat, you can select the desired temperature based on the day(s)-of-the-week and the time-of-the-day. However, the T9 also allows you to select which temperature sensor is used to determine the room temperature during different times of the day! Here is an example: We have three T9 temperature sensors (one at the thermostat display and two remote sensors). During the week days, we use the average of the temperature between all three sensors. At night we only is the remote sensor in our bedroom to control the temperature. On the weekend, we only use the remote sensor in my "office" if someone is in that room. Otherwise, the average of the other two sensors are used to control the temperature on the weekend. The ability to select which sensor (or combination of sensors) are used to determine the control of out HVAC system has been a game-changer, and it has really helped us make our home more comfortable!One more thing. We wanted a small thermostat that blended into the background of the wall. The T9 does this wonderfully. Unfortunately, many of the other modern thermostats want to make a bold statement with their glossy black appearance (also with their large size, and as they stick way out from the wall)! Making a bold statement may be fine for an expensive car, but it is not what we wanted from our thermostat.Last thoughts: Many other reviews cover the need for a "C-wire", or the fact that you may have to do some wall painting when replacing an older thermoset. I'll just remind you to consider these things before buying the T9. However, if you have isolated rooms in your house that vary in temperature, then the T9 with the optional remote sensors is a great option for you!Oh, BTW. The remote sensors stick to the wall using 3M Command strips (provided with the device). They are battery operated, and they claim to have over a year of battery life on AAA batteries. They connect to the main unit using a proprietary wireless connection.
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Top reviews from the United States

Reviewed in the United States on November 4, 2023
Style: A. Wi-Fi ThermostatVerified Purchase
6 people found this helpful
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Reviewed in the United States on December 23, 2022
Style: A. Wi-Fi ThermostatVerified Purchase
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5.0 out of 5 stars It has all the modern features, plus more! Yes, great remote temperature sensing included too!
Reviewed in the United States on December 23, 2022
I have been slowly converting my home to a "smart house". So, I have experienced a lot of smart device successes and failures! That said, the T9 has certainly been a success! By success, I mean it provides all the modern features you would want from a wifi connected device, plus a few features not offered by the competition. I found it easy to install and super easy to configure. I appreciate that it supports either 2.4 or 5 GHz wifi networks. I also found the display to be of high quality, and it was as easy to use as my iphone touch screen. I also use the Resideo phone app to control the thermostat. I found the app to be intuitive and easy to use.

Here is what sets the T9 apart. The remote temperature sensors!!! We have two rooms that are often 3-5 degrees different from the rest of the house. One of them is our bedroom. I placed a T9 remote sensor in each of the two rooms, and the two rooms are already much more comfortable.
Because the T9 allows you to setup the thermostat temperature control at the base unit on the wall, and/or at the remote sensors, I have greater control of the temperature in our house. When using the remote sensor(s), the T9 allows you to select which sensor is used to control the thermostat. The remote sensors can be configured to work in one of two ways: 1) become operational when they detect a person is in the room 2) just to operate as a temperature probe for the room. This is important because the T9 allows you to change how and when the remote sensors are used to control your HVAC system.

As a "programmable" thermostat, you can select the desired temperature based on the day(s)-of-the-week and the time-of-the-day. However, the T9 also allows you to select which temperature sensor is used to determine the room temperature during different times of the day! Here is an example: We have three T9 temperature sensors (one at the thermostat display and two remote sensors). During the week days, we use the average of the temperature between all three sensors. At night we only is the remote sensor in our bedroom to control the temperature. On the weekend, we only use the remote sensor in my "office" if someone is in that room. Otherwise, the average of the other two sensors are used to control the temperature on the weekend. The ability to select which sensor (or combination of sensors) are used to determine the control of out HVAC system has been a game-changer, and it has really helped us make our home more comfortable!

One more thing. We wanted a small thermostat that blended into the background of the wall. The T9 does this wonderfully. Unfortunately, many of the other modern thermostats want to make a bold statement with their glossy black appearance (also with their large size, and as they stick way out from the wall)! Making a bold statement may be fine for an expensive car, but it is not what we wanted from our thermostat.

Last thoughts: Many other reviews cover the need for a "C-wire", or the fact that you may have to do some wall painting when replacing an older thermoset. I'll just remind you to consider these things before buying the T9. However, if you have isolated rooms in your house that vary in temperature, then the T9 with the optional remote sensors is a great option for you!

Oh, BTW. The remote sensors stick to the wall using 3M Command strips (provided with the device). They are battery operated, and they claim to have over a year of battery life on AAA batteries. They connect to the main unit using a proprietary wireless connection.
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Customer imageCustomer image
30 people found this helpful
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Reviewed in the United States on March 17, 2022
Style: A. Wi-Fi ThermostatVerified Purchase
5 people found this helpful
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Top reviews from other countries

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Octavio R
4.0 out of 5 stars Piénsalo 2 veces
Reviewed in Mexico on February 16, 2022
Style: A. Wi-Fi ThermostatVerified Purchase
André
5.0 out of 5 stars Erreur d'enregistrement - résolu
Reviewed in Canada on January 8, 2021
Style: A. Wi-Fi ThermostatVerified Purchase
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André
5.0 out of 5 stars Erreur d'enregistrement - résolu
Reviewed in Canada on January 8, 2021
J'ai été plus d'un mois sans être capable d'enregistrer mon thermostat dans l'application Honeywell Home App.
J'ai contacté le soutien technique d'honeywell home par téléphone et par messagerie instantané. Réponse rapide et très courtois et ils ne niaisent pas avec les détails d'usage. Cependant ils n'ont pas été en mesure de trouver le problème et il m'ont suggérer d'effectuer un retour/échange.
Dans une ultime tentative de dernier recours, j'ai effectuer une 4e fois une remise a l'état d'usine et cette fois j'ai choisi l'anglais comme language de configuration. Je ne sais pas si c'est vraiment ce qui a fait fonctionné le couplage avec mon application, mais cette fois ça fonctionné donc si vous avez le même problème que moi essayez ça.
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5 people found this helpful
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