Best Honeywell T9 Thermostat In June 2025

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Here, we’ll review the top 10 Best Honeywell T9 Thermostat on the market today. We’ll provide an overview of the pros and cons of each product. Read on for our selection of Best Honeywell T9 Thermostat.

To help you in your search, we have completed this list of the Best Honeywell T9 Thermostat.

Top Rated Best Honeywell T9 Thermostat Of 2025

Rank	Product Name	Score
1	Google, T5000SF, Nest Temperature Sensor, White Buy Now	9.7 Buy Now
2	ecobee SmartThermostat with Voice Control, SmartSensor Included, Alexa Built-In Buy Now	9.5 Buy Now
3	Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa Buy Now	9.1 Buy Now
4	Honeywell RCHTSENSOR-1PK RCHTSENSOR Smart Room Sensor, White Buy Now	8.8 Buy Now
5	Honeywell C7189U1005 White Indoor Remote Temperature Sensor For Th7000 and Th8000 Thermostats Buy Now	8.6 Buy Now
6	Honeywell Home RCHT8612WF T5 Plus Wi-Fi Touchscreen Smart Thermostat with 7 Day flexible Buy Now	8.3 Buy Now
7	Honeywell Home T9 WIFI Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display Buy Now	8.1 Buy Now
8	Honeywell THP2400A1027W White Coverplate Assembly Buy Now	7.8 Buy Now
9	Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy Buy Now	7.5 Buy Now
10	Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa Buy Now	7.2 Buy Now

1. Google, T5000SF, Nest Temperature Sensor, White

• Wireless: place it on a wall or shelf. then forget it's even there.
• Temperature controller: helps make sure a certain room is the exact temperature you want it to be.
• Temperature sensor: put temperature sensors in different rooms and choose which room to prioritize when.
• Google nest compatibility: communicates temperature to compatible google nest thermostats up to 50 feet away.
• Low energy bluetooth connection: up to 6 google nest temperature sensors supported per connected thermostat and up to 18 nest temperature sensors supported per home.

2. ecobee SmartThermostat with Voice Control, SmartSensor Included, Alexa Built-In

• Energy savings: by reducing wasted energy in your home, you could save up to 23% annually on your heating or cooling costs (compared to a hold of 72f). plus, the eco+ free software works to further maximize efficiency. you can also see if your purchase qualifies for a rebate at ecobee.com/rebates.
• Award winning: named the best smart thermostat by toms guide. with a crisp glass finish, vivid touch display, powerful quad-core processor, dual-band wi-fi, and far-field voice, its a smart thermostat like no other.
• Installation: easily install yourself in 45 minutes or less with video walkthroughs and a step-by-step guide on the ecobee app. our canada-based support team is also just a call away.
• Smartsensor: includes smartsensor to keep important rooms comfortable by adjusting your thermostat based on occupancy and temperature.
• Advanced comfort: with alexa built-in and an intuitive mobile app, you can control your thermostat and home using your voice, phone, tablet, computer, or apple watch.
• Alexa built-in: consider your life handled with alexa built-in. just ask for the weather, music, alexa calling, and more.

3. Honeywell Home Wi-Fi 7-Day Programmable Thermostat (RTH6580WF), Requires C Wire, Works with Alexa

• Ability to view local weather from web portal or app, wink app ready - no wink hub required.
• Works with alexa, google assistant, samsung smartthings, ifttt, bonomi, wink, and stringy (devices sold separately)
• Wi-fi enabled thermostat allows for remote access via smart-phone or computer, free smart-phone app for iphone, ipad and android operating systems.
• 7 day programming with 4 program periods per day can be configured to meet almost any scheduling scenario for ultimate flexibility.
• Energy star certified
• Compatibility is required works with virtually any system type except electric baseboards. but please note: c-wire is required for this thermostat to receive power. if you do not have a c-wire, you may be able to use the c-wire adapter (sold separately) or a g-wire jumper cable which is included with this thermostat. use of the g-wire jumper cable will allow you to po...

4. Honeywell RCHTSENSOR-1PK RCHTSENSOR Smart Room Sensor, White

• Compatible with honeywell home t9 and t10 pro smart thermostats
• Smart home room sensors can know when a room becomes occupied and automatically adjust the temperature
• With smart home sensors, your thermostat can know temperature in any room - like your bedroom, to help make the room more comfortable for a great night's sleep
• Smart room sensors have a range up to 200 feet and a 1-year battery life, install them practically anywhere, range can vary depending on your home's construction, wireless interference, and other factors, battery life may vary by use

5. Honeywell C7189U1005 White Indoor Remote Temperature Sensor For Th7000 and Th8000 Thermostats

• Used to sense temperature if the thermostat is installed in a poor temperature sensing location
• Small remote temperature sensor to match any room dcor
• Works with a maximum 200 foot wire run
• Factory calibrated, no field calibration required

6. Honeywell Home RCHT8612WF T5 Plus Wi-Fi Touchscreen Smart Thermostat with 7 Day flexible

• Optional power adapter included - wi-fi thermostats typically require extra power via a "c" wire. many homes lack this wire, so this adapter gives you a simple, low-voltage alternative. it's easy to install and fits discreetly near your heating and cooling system. extra power via a c wire. many homes lack this wire, so this adapter gives you a simple, low voltage alte...
• Fan operation* custom fan settings to circulate more or less air, as needed, to keep air moving throughout your home. fan control dependent on wiring configuration
• Smart alerts - push notifications remind you to change your filter and warn you of extreme indoor temperatures
• Auto change from heat to cool - automatically determines if your home needs heating or cooling to provide maximum comfort
• 7-day flexible scheduling or location based temperature control - its your choice. 7-day scheduling programs your thermostat. geofence technology helps make you comfortable by using your smartphone's location to know when you're away and when you return. programs your thermostat. geofence technology helps make you comfortable by using your smartphones location to know...
• Energy star certified

7. Honeywell Home T9 WIFI Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display

• Save money and energy. adjust your thermostat from anywhere with your mobile device, or let your home automatically react to your schedule with auto home/away scheduling. save even more with possible inclusion in energy saving schemes from your utility provider. (subject to availability in area)
• Live and sleep smarter. choose the temperature in a specific room, like the bedroom, to be exactly what you want it to be, to help get a better nights sleep. or let the smart room sensors automatically detect which rooms people are in and focus comfort where it matters automatically.
• Multi-room focus. dont be forced to choose one room over another, the t9 smart thermostat can handle multiple rooms to focus on (requires sensors).voltage: 24v. smart room sensor dimensions-2.6 x 2.6 x 0.77 inches
• Smart response and alerts. intelligently learns your homes heating and cooling patterns to deliver the right temperature at the right time, and sending you filter and temperature alerts.
• Amazing sensor range. the battery powered smart room sensors utilize unique honeywell home technology to deliver an efficient signal up to 200 ft range. (could be further depending on home construction)
• Do it yourself simple install. with guided installation setup couldnt be simpler. the included power adapter is an easy-to-install, low-voltage alternative to a c-wire, so the thermostat is compatible with most homes.

8. Honeywell THP2400A1027W White Coverplate Assembly

• White cover plate!
• Easy installation!
• For use with the prestige 2-wire iaq thermostat!
• Use to cover marks on the wall or to mount the thermostat to a 2 in. x 4 in. electrical box

9. Emerson Sensi Wi-Fi Smart Thermostat for Smart Home, DIY, Works With Alexa, Energy

• Circulating fan: air circulation may improve indoor air quality by helping to regulate temperature and prevent buildup of particles and mold.
• Editors choice best value smart thermostat by usa todays reviewed.com
• Save about 23% on hvac energy*: the energy star certified sensi thermostat helps you save on your hvac energy costs, with features like geofencing, 7-day flexible scheduling, remote access and in-app system usage.
• Control from anywhere: remotely control your home comfort from your smartphone or tablet using the sensi mobile app for android and ios devices.
• Extensive compatibility***: works with the hvac equipment found in most homes - a c-wire is required for heat-only, cool-only and heat pump systems. check system and router compatibility at sensi.emerson.com/compatibility
• Usage reports: monitor current day and historical heating, cooling and fan runtimes right in the app.

10. Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa

• Compatibility requires c-wire: extensive compatibility*** with hvac equipment found in most homes. all system types require a common wire (c-wire). to check system and router compatibility, refer to our online compatibility resources at sensi.emerson.com/compatibility
• Save about 23% on hvac energy*: by adjusting the temperature using flexible scheduling, remote access, and geofencing, sensi customers saved about 23% on hvac energy usage
• Editors choice best overall smart thermostat by usa todays reviewed.com
• Control from anywhere: remotely control your home comfort from your smartphone or tablet using the sensi mobile app for android and ios devices.
• Circulating fan: air circulation may improve indoor air quality by helping to regulate temperature and prevent buildup of particles and mold.
• Usage reports: monitor current day and historical heating, cooling and fan runtimes right in the app.