Questions & Answers

Q: QuestionHow is this Honeywell Home thermostat powered?

• A:Answer This thermostat is hard wired for power.

Q: QuestionCan I control the Honeywell Home thermostat with my smartphone?

• A:Answer Yes, you can control the thermostat from your smartphone, tablet, or laptop using the Resideo app.

Q: QuestionDoes the Honeywell Home thermostat come with a warranty?

• A:Answer Yes, this thermostat comes with a 2-year warranty on both parts and labor.

Q: QuestionWhat is the battery life of the smart room sensor?

• A:Answer The smart room sensor has a battery life of up to one year.

Q: QuestionIs this Honeywell Home thermostat compatible with Google Assistant?

• A:Answer Yes, this thermostat is compatible with Google Assistant and Amazon Alexa enabled devices.

Q: QuestionHow do the sensors control each room’s temperature if you don’t have a zoned system?

Asked 6 years ago by Doug.

• A:Answer The system lets you decide which sensor(s) determine when the heating or cooling turns on/off for the whole house. For example, if you have the main thermostat (living room), a sensor in your master bedroom and one in the kitchen, you can tell the system ('prioritizing') to only consider the master bedroom's temperature when deciding if to heat or cool the house. So at night if you want to maintain a temperature of 72degs in your master bedroom, the system will turn on the heat or cool to maintain the temperature in the master bedroom. The temperatures in the other rooms will now be dependent on the master bedrooms temperature, so those other rooms may run hotter or cooler depending on your home. With multiple sensors you can see the temperatures in the others rooms (that have sensors). You can also prioritize multiple rooms. So you can tell the system to main the temperature in the house based on the temperatures in the master bedroom and the kitchen or living room and kitchen, etc. I have been using the system for a few weeks now and it is working great. I actually bought some additional sensors for my home.

  Answered 6 years ago by jayhVerified Purchase

  Helpful (28)Unhelpful (2)ReportAnswer this questionShow more answers (3)

Q: QuestionTo replace T6 Pro with T9, is it just a matter of snapping or do i need to replace the wall mount as well ?

Asked 5 years ago by Mediteo.

• A:Answer It is plug and play! Our T6 was on a larger base plate, so I pulled the T6, painted the base plate the color of the wall, let it dry a while and plugged the T9 onto the same wiring harness.

  Answered 5 years ago by TomFVerified Purchase

  • 
  Helpful (27)Unhelpful (0)ReportAnswer this question

Q: QuestionDoes the Screen Dim or black out for use in a bedroom at night?

Asked 6 years ago by rnroll.

• A:Answer Yes, you can set dimming levels for inactive and sleep times. You can set it to 0 for blackout.

  Answered 6 years ago by TP536

  Helpful (12)Unhelpful (2)ReportAnswer this questionShow more answers (5)

Q: QuestionDoes this Honeywell T9 display outside temp

Asked 6 years ago by MikeP.

• A:Answer Yes, this displays the outside temperature (Uses your internet to pull the temperature based on the location)

  Answered 5 years ago by ashdarlVerified Purchase

  Helpful (5)Unhelpful (0)ReportAnswer this questionShow more answers (4)

Q: QuestionWhat is the function of the button on the sensor? I assume to link; but does it have other functions too? And does the thermostat have a sensor in it, or does it use the one that came with it?

Asked 6 years ago by SkyKing.

• A:Answer Yes, it is used to link the sensor with the main thermostat. And yes, the main thermostat has it's own built in sensor, so you get a reading where it is located, and a reading from the room sensors in each room you place one in. I bought six more sensors for a total of seven different rooms, eight, if you count the actual thermostat, and they all work great together, for a perfect temperature throughout the entire house.

  I would recommend:

  • 

    Honeywell Home - Smart Room Sensor (2-Pack) - White

    User rating, 4.62 out of 5 stars with 34 reviews.

    (34)

  Answered 6 years ago by Manny69Verified Purchase

  Helpful (5)Unhelpful (0)ReportAnswer this questionShow more answers (2)

Q: QuestionDoes the T9 automatically switch between heating and cooling based on the set temperature? The T6 does not. I had a much less expensive thermostat that does, so I assumed all thermostats do. Expensive lesson to learn.

Asked 5 years ago by Seriouslyxhowirritatinxxx.

• A:Answer I believe I also had the T6 prior to buying the T9. The T9 DOES automatically switch between heating and cooling. You set a max and min temperature and the air kicks on if it reaches the max, and the heat kicks on if it reaches the min. Do note that if you are using the geolocation function, it does not allow you to set deep scheduling, just day, night, away, and vacation. So if you wanted to have multiple scheduling options during the day, for instance, you would have to turn off geolocation. Hope that helps!

  Answered 5 years ago by odyssey82Verified Purchase

  Helpful (5)Unhelpful (0)ReportAnswer this question

Q: QuestionHow many sensor can you add to the thermostat?

Asked 6 years ago by Sammy.

• A:Answer You can add up to twenty (20), as far as I know. It could be more, since you can also add outside temperature sensors. But, it might just be a combination of both outdoor and indoor sensors, for a total of twenty (20).

  Answered 6 years ago by Manny69Verified Purchase

  Helpful (5)Unhelpful (0)ReportAnswer this questionShow more answers (1)

Q: QuestionWill the T9 work with a Orbi Wi-Fi . The system is a Tri-band Mesh WiFi 6 . Thanks.

Asked 3 years ago by Micky.

• A:Answer Hi Micky, this thermostat requires 2.4GHz or 5GHz bandwidth Network (Simultaneous 2.4/5GHz networks that experience connectivity failure may require a separate dedicated 2.4 or 5GHz network to be calibrated). Connect directly to the router signal – Not recommended for use with signal booster, satellites, or extenders. Business Networks (Enterprise networks, guest networks, or networks that require logging in via a web page/portal) are not supported. Gateways or Network switches can block some traffic to Honeywell / resideo and are not supported, recommended WPA2-AES Network Security Protocol, DHCP Enabled – Static networks not supported, UPnP / P2P Enabled, Band-Steering Disabled. - Maria

  Answered 3 years ago by Resideo Team

  Helpful (2)Unhelpful (0)ReportAnswer this question

Q: QuestionI recently moved into a new home and the wifi is not yet connected. Could this thermostat be installed and operated simply from the unit itself until such time as the wifi is connected? Or does the thermostat require wifi for setup?

Asked 4 years ago by americanschaferhund.

• A:Answer I believe you can set up wifi after install. We operate ours without wifi when we are home.

  Answered 4 years ago by Carla

  Helpful (2)Unhelpful (0)ReportAnswer this question

Q: QuestionDo you need a c wire to run this unit? If so, can you list units that are WiFi and smart, touch screen that do not require a c wire. I have 14 units to replace. If not, can you suggest what units are available that are at a minimum WiFi ?

Asked 6 years ago by Bloomfield.

• A:Answer No C-wire required. It comes with a special pack, that makes it work without the c-wire.

  Answered 6 years ago by FlowinmikecohenVerified Purchase

  Helpful (1)Unhelpful (0)ReportAnswer this questionShow more answers (2)

Q: QuestionCan you turn off the thermostat completely? So if you want to go on vacation and not have heating/cooling come on it does nothing .

Asked 6 years ago by Dennis.

• A:Answer Yes it has a vacation setting

  Answered 6 years ago by JasonT

  Helpful (1)Unhelpful (0)ReportAnswer this questionShow more answers (5)

Q: QuestionI have a geothermal system, but I also burn wood in my basement. Can I program the system to turn on and off the system blower only when the basement temp reaches programmed temp? I’d like to spread that heat throughout the house automatically.

Asked 3 years ago by Basement.

• A:Answer Hi Basement, this thermostat can be used with smart room sensors that will allow you to prioritize rooms. You can place one sensor on the basement and select it as priority, set the desired temperature and the system will be running until that room reaches the set point. - Maria

  Answered 3 years ago by Resideo Team

  Helpful (1)Unhelpful (0)ReportAnswer this question

Q: QuestionAndroid display settings need set to "small" to see all T9 info. Setting display to "large" no good. I have three T9's but I can only see 1.5 of them. "Default" setting doesn't work well either.

Asked 3 years ago by opie.

• A:Answer Hi, we'd be happy to look into this for you. When you have a moment, please reach out to us at 1-800-633-3991, or through Twitter and Facebook under Honeywell Home. -Jerry

  Answered 3 years ago by Resideo Team

  Helpful (1)Unhelpful (0)ReportAnswer this question

Q: QuestionDoes this thermostat measure humidity? Do the remote sensors? Can the humidity be seen in the app?

Asked 3 years ago by BobbyBee.

• A:Answer Hi BobbyBee, both the thermostat and sensors read humidity and humidity readings are also shown on the Resideo app. - Maria

  Answered 3 years ago by Resideo Team

  Helpful (1)Unhelpful (0)ReportAnswer this questionShow more answers (1)