---
product_id: 112160266
title: "Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, White"
brand: "honeywell home"
price: "$599"
currency: NZD
in_stock: true
reviews_count: 7
category: "Honeywell Home"
url: https://www.desertcart.nz/products/112160266-honeywell-home-t9-wifi-smart-thermostat-with-1-smart-room
store_origin: NZ
region: New Zealand
---

# Wi-Fi & app control 200 ft sensor range DIY easy install Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, White

**Brand:** honeywell home
**Price:** $599
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay cool, save green, and control your comfort like a pro! 📲

## Quick Answers

- **What is this?** Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, White by honeywell home
- **How much does it cost?** $599 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/112160266-honeywell-home-t9-wifi-smart-thermostat-with-1-smart-room)

## Best For

- honeywell home enthusiasts

## Why This Product

- Trusted honeywell home brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Energy-Saving Automation:** Auto Home/Away Scheduling plus ENERGY STAR certification help cut costs and reduce your carbon footprint.
- • **Effortless DIY Installation:** Includes C-wire adapter and wall plate options for a smooth, no-hassle setup in most homes.
- • **Precision Multi-Room Comfort:** Smart Room Sensors target the rooms that matter most, balancing temperature across your home effortlessly.
- • **Smart Integration & Monitoring:** Compatible with most HVAC systems and utility demand response programs for smarter energy management.
- • **Seamless Mobile & Voice Control:** Adjust settings anytime via the Honeywell Home app or voice assistants like Alexa, Google Assistant, and Apple HomeKit.

## Overview

The Honeywell Home T9 WiFi Smart Thermostat with Smart Room Sensor offers precise multi-room temperature control via advanced sensors with up to 200 ft range. Featuring ENERGY STAR certification, it enables remote adjustments through a sleek touchscreen or mobile app, and integrates seamlessly with Alexa, Google Assistant, and Apple HomeKit. Designed for easy DIY installation with included adapters, it supports most HVAC systems and helps optimize energy use with smart scheduling and utility demand response compatibility.

## Description

The T9 Smart Thermostat works with Smart Room Sensors to help you adjust the temperature from anywhere and stay cozy in the rooms that matter. Place sensors where you want to see each room's temperature and humidity. Use the multi-room display on the thermostat's touchscreen — or in the Honeywell Home app — to focus on rooms based on occupancy or a specific schedule you choose. When focusing on multiple rooms, the T9 works toward creating an average temperature, balancing the needs across the whole home.

Review: Great Thermostat, Easy Install especially with the Wall Plate Adapter - First the install is very easy if you are replacing an existing thermostat that has a C wire, a C wire adapter is included but I did not need that in my case. Secondly if you are replacing an existing thermostat, especially the traditional rectangular form factor, I HIGHLY RECOMMEND purchasing the THP2400A1080 wall plate adapter or the generic version which is much cheaper. It makes install of the T9 even easier. This thermostat has 3 holes you need to drill which are probably not in the location of the ones for your old thermostat. The wall adapter allows you to use the existing holes from your old thermostat then the UWP/mounting plate from the T9 (or any honeywell thermostat that uses the UWP) just clicks onto the adapter without new holes to drill. The cover plate from the wall adapter is then large enough to cover the area of your old thermostat. Now for a review of thermostat itself. My setup is a 2 story home with single stage forced air AC with a single stage gas furnace on a 2 zone system (upstairs and downstairs) so I bought 2 T9's that replaced 2 old smart thermostat (old honeywell with basic wifi and online scheduling capability). The old thermostats worked fine but I upgraded to the T9 to hopefully mitigate unbalanced temps between rooms on the same floor as well as between the 2 floors. It absolutely worked as I had hoped. It has only been a few days but I can immediately tell the difference in temperature balance between the rooms and the floors in over 100 degree weather. How are these thermostats helping balance the air temp? First the room sensors allow you to prioritize which rooms are being used for temp readings at different times of day or based on activity. This can be done by either specifying a single room (or group of rooms to average the temperature) or by activity (also individual room or averaging multiple rooms). During the day I can prioritize the living spaces and at night the bedrooms for temp readings. This combined with the auto recirculation mode of the fan allows the fan to recirc air about 20 minutes every hour even when the heating or cooling isn't actually running. Over the course of a day this really has helped balance the air between rooms and between the floors on my 2 zone system. Using the energy monitoring from my solar panel system I can already see a drop in energy usage as my AC has not had to run as much overall to make the occupied rooms comfortable. Also my thermostats are in stupid locations so the room sensors help with that. The UWP on the T9 is great as one of my thermostats is on the wall between the house and the garage which has a large hole for the thermostat wiring. The UWP for the T9 has a door that closes off that hole and the wiring before you attach the thermostat, so it is not reading any of that hot air coming from the wall. I confirmed this as my old thermostat use to read 2 degrees hotter than the rest of the hallway, verified with a separate thermometer, on a 100 degree day. The T9 now reads the same as the thermometer In terms of why I chose the T9 over a Ecobee or a Nest, basically the T9 generally is cheaper. The T9 thermostat with a room sensor can be had for as little as $143. The other popular options cost more. While the additional features of the others may be worth it to some I simply would not use those features. For example, I am not going to talk to my thermostat. I am just gonna set the schedules and let the thermostat do its think and it still has integration to those systems if I choose to have that functionality later. Overall, great value smart thermostat that does what it needs to do. If I had one complaint is that this thermostat, and Honeywell thermostats in general don't allow you to adjust the differential (the plus or minus above or below the setpoint the thermostat kicks on or off the air/heat) This seems to be set at a +/- of 1 degree and no way to change it. Some may prefer a differential of 1.5 to 2 degrees instead. This is somewhat mitigated by using multiple sensors to average the temperature but a differential setting adjustment would of made this thermostat almost perfect.
Review: Excellent thermostat! No complaints. - I’ve tried a few popular thermostats like Nest, Ecobee, also the desertcart thermostat. So far I like this one the best. I’ve paired it with HomeKit which I believe is the key. I’ve learned that integrating my smart devices with HomeKit makes them function more efficiently. I also have an Apple HomePod, which has a built-in climate sensor. The sensor on the Apple HomePod is very accurate and helps the Honeywell T9 control temperature better. This Honeywell thermostat also comes with a great sensor. I live in a four-bedroom two-story house. I’m using this thermostat upstairs in the master bedroom and the Honeywell sensor is in the fourth bedroom across the house. The upstairs temperature is perfect. The thermostat I was using previously was not so great. It didn’t work with HomeKit and it didn’t have any sensors. So sometimes the AC would stay on too long or the AC would not come on when it should. I was constantly modifying the thermostat. I no longer have that problem since I purchased the Honeywell T9 thermostat. Now the indoor air upstairs is so comfortable, even at night. Even at high heat temperatures in the hundreds. I have no problems with it staying connected to WiFi. I’m currently using the desertcart thermostat downstairs, but I will also be replacing it with the Honeywell T9. Honeywell T9 has many functions and is easy to use. It was basically simple to install. The house already came with Honeywell thermostats so all I did was pulled off the previous one and popped on this one. I love having the ability to control the thermostat remotely from my phone, by voice with Siri, or Alexa. As long as you install this thermostat correctly and use sensors correctly, you shouldn’t have any issues. During installation, initially a message appeared that said, “factory test failure”. On the touchscreen of the thermostat below that message, if you touch the lower area of the screen, a menu will appear which will allow you to start the programming of the thermostat. Simple!

## Features

- SAVE MONEY AND ENERGY. Adjust your ENERGY STAR certified thermostat from anywhere with your mobile device, or let your home automatically react to your schedule with Auto Home/Away Scheduling. Save even more 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.
- 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 night’s sleep. Or let the Smart Room Sensors automatically detect which rooms people are in and focus comfort where it matters automatically.
- 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.)
- MULTI-ROOM FOCUS. Don’t be forced to choose one room over another, the T9 Smart Thermostat can handle multiple rooms to focus on (requires sensors).
- CONTROL IT YOUR WAY. Control the T9 using the Resideo app or through desertcart Alexa, Apple HomeKit, Google Assistant, and more.
- 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.
- DO IT YOURSELF SIMPLE INSTALL. With guided installation setup couldn’t 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.
- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07N849J21 |
| Backlight | Yes |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #9,230 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Home Programmable Thermostats |
| Brand | Honeywell Home |
| Color | White |
| Connectivity Protocol | Wi-Fi |
| Connectivity Technology | Wi-Fi |
| Control Method | Voice |
| Control Type | Touch |
| Controller Type | Amazon Alexa, Google Assistant, SmartThings, Vera |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,920) |
| Date First Available | February 15, 2019 |
| Display Type | LCD |
| Finish | Glossy |
| Finish Type | Glossy |
| Global Trade Identification Number | 00085267723534 |
| Included Components | Thermostat, Mounting Hardware, Sensor |
| Item Package Quantity | 1 |
| Item Weight | 1.32 pounds |
| Item model number | RCHT9610WFSW2003 T9 |
| Manufacturer | Honeywell Home |
| Material | Plastic |
| Model Name | RCHT9610WFSW2003 T9 |
| Mounting Type | Wall Mount |
| Number of Batteries | 2 AAA batteries required. (included) |
| Part Number | RCHT9610WFSW2003 |
| Power Source | Corded Electric |
| Product Dimensions | 0.94"D x 3.7"W x 4.92"H |
| Shape | Rectangular |
| Size | No Size |
| Smart Home Compatibility | Smart Home Compatible |
| Special Feature | Built-In Speaker |
| Special Features | Built-In Speaker |
| Specific Uses For Product | Furnace |
| Specification Met | Energy Star |
| Style | A. Wi-Fi Thermostat w/Sensor |
| Temperature Control Type | Heating and Cooling |
| UPC | 085267723534 |
| Voltage | 240 Volts |
| Warranty Description | 2 year limited warranty. |

## Product Details

- **Brand:** Honeywell Home
- **Controller Type:** Amazon Alexa, Google Assistant, SmartThings, Vera
- **Model Name:** RCHT9610WFSW2003 T9
- **Product Dimensions:** 0.94"D x 3.7"W x 4.92"H
- **Special Feature:** Built-In Speaker

## Images

![Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display, White - Image 1](https://m.media-amazon.com/images/I/71p8+UtIHpL.jpg)

## Questions & Answers

**Q: Can the remote sensor be the primary temperature setting? I want the room that the remote sensor is in to be the desired temperature (no averaging).**
A: Yes, that is possible... you can specify which sensor the base unit uses to measure the temperature... For example, when I go to bed at night, I make my bedroom the assigned sensor, so that regardless of what the temp is downstairs, the temp in my bedroom will be regulated to the temp that I have set.

**Q: Can I set this thing to a specific temperature and have it turn on the heater or ac based off of that temperature?**
A: Hi There, The changeover feature (also referred to as Changeover) allows your thermostat to automatically switch from heating to cooling, or vice versa, depending on the temperature in your home. The thermostat has a mandatory 1.5° differential or “swing”, so even if you set your thermostat heating temp to 70° and the cooling temp to 70° and turn changeover on, the temperature must rise or fall at least 1.5° before the thermostat will switch modes. (For the previous example, the temperature would have to climb to 71.5 degrees). I Hope this helps. -John

**Q: is the T9 compatible with dual zone systems and will I need two to operate effectively?  Currently two thermostat controllers in my home.**
A: Yes, you will need two T9s to operate two systems.

**Q: Is the thermostat programable?**
A: The Honeywell Home T9 WIFI Smart Thermostat with 1 Smart Room Sensor is programmable. You can have up to 6 periods per day. If you have additional questions, please reach out to us at 1-800-633-3991.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Thermostat, Easy Install especially with the Wall Plate Adapter
*by A***R on July 9, 2024*

First the install is very easy if you are replacing an existing thermostat that has a C wire, a C wire adapter is included but I did not need that in my case. Secondly if you are replacing an existing thermostat, especially the traditional rectangular form factor, I HIGHLY RECOMMEND purchasing the THP2400A1080 wall plate adapter or the generic version which is much cheaper. It makes install of the T9 even easier. This thermostat has 3 holes you need to drill which are probably not in the location of the ones for your old thermostat. The wall adapter allows you to use the existing holes from your old thermostat then the UWP/mounting plate from the T9 (or any honeywell thermostat that uses the UWP) just clicks onto the adapter without new holes to drill. The cover plate from the wall adapter is then large enough to cover the area of your old thermostat. Now for a review of thermostat itself. My setup is a 2 story home with single stage forced air AC with a single stage gas furnace on a 2 zone system (upstairs and downstairs) so I bought 2 T9's that replaced 2 old smart thermostat (old honeywell with basic wifi and online scheduling capability). The old thermostats worked fine but I upgraded to the T9 to hopefully mitigate unbalanced temps between rooms on the same floor as well as between the 2 floors. It absolutely worked as I had hoped. It has only been a few days but I can immediately tell the difference in temperature balance between the rooms and the floors in over 100 degree weather. How are these thermostats helping balance the air temp? First the room sensors allow you to prioritize which rooms are being used for temp readings at different times of day or based on activity. This can be done by either specifying a single room (or group of rooms to average the temperature) or by activity (also individual room or averaging multiple rooms). During the day I can prioritize the living spaces and at night the bedrooms for temp readings. This combined with the auto recirculation mode of the fan allows the fan to recirc air about 20 minutes every hour even when the heating or cooling isn't actually running. Over the course of a day this really has helped balance the air between rooms and between the floors on my 2 zone system. Using the energy monitoring from my solar panel system I can already see a drop in energy usage as my AC has not had to run as much overall to make the occupied rooms comfortable. Also my thermostats are in stupid locations so the room sensors help with that. The UWP on the T9 is great as one of my thermostats is on the wall between the house and the garage which has a large hole for the thermostat wiring. The UWP for the T9 has a door that closes off that hole and the wiring before you attach the thermostat, so it is not reading any of that hot air coming from the wall. I confirmed this as my old thermostat use to read 2 degrees hotter than the rest of the hallway, verified with a separate thermometer, on a 100 degree day. The T9 now reads the same as the thermometer In terms of why I chose the T9 over a Ecobee or a Nest, basically the T9 generally is cheaper. The T9 thermostat with a room sensor can be had for as little as $143. The other popular options cost more. While the additional features of the others may be worth it to some I simply would not use those features. For example, I am not going to talk to my thermostat. I am just gonna set the schedules and let the thermostat do its think and it still has integration to those systems if I choose to have that functionality later. Overall, great value smart thermostat that does what it needs to do. If I had one complaint is that this thermostat, and Honeywell thermostats in general don't allow you to adjust the differential (the plus or minus above or below the setpoint the thermostat kicks on or off the air/heat) This seems to be set at a +/- of 1 degree and no way to change it. Some may prefer a differential of 1.5 to 2 degrees instead. This is somewhat mitigated by using multiple sensors to average the temperature but a differential setting adjustment would of made this thermostat almost perfect.

### ⭐⭐⭐⭐⭐ Excellent thermostat! No complaints.
*by M***L on June 23, 2024*

I’ve tried a few popular thermostats like Nest, Ecobee, also the Amazon thermostat. So far I like this one the best. I’ve paired it with HomeKit which I believe is the key. I’ve learned that integrating my smart devices with HomeKit makes them function more efficiently. I also have an Apple HomePod, which has a built-in climate sensor. The sensor on the Apple HomePod is very accurate and helps the Honeywell T9 control temperature better. This Honeywell thermostat also comes with a great sensor. I live in a four-bedroom two-story house. I’m using this thermostat upstairs in the master bedroom and the Honeywell sensor is in the fourth bedroom across the house. The upstairs temperature is perfect. The thermostat I was using previously was not so great. It didn’t work with HomeKit and it didn’t have any sensors. So sometimes the AC would stay on too long or the AC would not come on when it should. I was constantly modifying the thermostat. I no longer have that problem since I purchased the Honeywell T9 thermostat. Now the indoor air upstairs is so comfortable, even at night. Even at high heat temperatures in the hundreds. I have no problems with it staying connected to WiFi. I’m currently using the Amazon thermostat downstairs, but I will also be replacing it with the Honeywell T9. Honeywell T9 has many functions and is easy to use. It was basically simple to install. The house already came with Honeywell thermostats so all I did was pulled off the previous one and popped on this one. I love having the ability to control the thermostat remotely from my phone, by voice with Siri, or Alexa. As long as you install this thermostat correctly and use sensors correctly, you shouldn’t have any issues. During installation, initially a message appeared that said, “factory test failure”. On the touchscreen of the thermostat below that message, if you touch the lower area of the screen, a menu will appear which will allow you to start the programming of the thermostat. Simple!

### ⭐⭐⭐⭐⭐ Review
*by E***I on January 28, 2026*

great product!

## Frequently Bought Together

- Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display
- ARYEIELLSOW THP2400A1080 Large Cover Plate & Electrical Box Adaptor for T-Series Thermostats, White (1)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-16*