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Internet # 322082212

Model # RTH8800WF2022

Store SKU # 1008450780

Top Rated

T5 7-Day Smart Wi-Fi Thermostat with Geofence Technology and Auto Changeover, Energy Star Certified

$109.99
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  • Scheduling feature can save 8-16% on energy bills
  • Control from anywhere with app, Alexa, HomeKit or Google Home
  • Auto Home/Away and Smart Response provides personalized comfort
  • View More Details

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Product Details

About This Product

T5 smart thermostat allows you to take comfort knowing your home temperature will always be just how you like it. It's easy to install and use and conveniently fits in with your lifestyle. The T5 smart thermostat is ENERGY STAR certified and you can program it based on your schedule or let it adapt to your life as plans change. Control the T5 smart thermostat from anywhere simply by using your smartphone or tablet: helping keep life simple and removing the guesswork, while ensuring maximum comfort when you're at home and saving you money on your energy bills.

Highlights

  • ENERGY STAR certified, help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use
  • 7-day flexible scheduling or location-based temperature control, choose between 7-day scheduling programs and geofence technology which uses your smartphone's location to know when you're away and when you return or use a combination of both
  • Auto home and away mode: enjoy ideal temperatures at home, then save when away with geofencing technology to alert your thermostat when the temperature should be adjusted for comfort and savings automatically
  • Save money on energy bills: high use of the scheduling feature saved customers between 8% to 16% on heating and cooling bills, dollar savings range based on nationwide average annual single-family detached home's heat and cooling bills, actual savings varies based on consumption
  • Smart response and alerts: learn patterns to deliver the right comfort by automatically determining if your home needs heating or cooling
  • Easily connect your Wi-Fi thermostat with compatible voice assistant devices like Alexa, Google Assistant, Apple HomeKit, Microsoft Cortana and more
  • Save energy and get rewarded, check with your energy provider about available energy savings rebates to save on your purchase, 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 temperature settings when there is high energy demand
  • Compatible with most low voltage heating, cooling and heat pump systems, does not work with electric baseboard heat (120-Volt to 240-Volt) or millivolt systems
  • The RTH8800WF is a replacement for RTH6580WF for applications up to 2 heat, 2 cool conventional or 3 heat, 2 cool heat pump
  • Click here to learn more about Eco Options and Energy Efficiency
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 322082212

Model # RTH8800WF2022

Store SKU # 1008450780

Specifications

Dimensions

Product Depth (in.)

1.0625 in

Product Height (in.)

4.0625 in

Details

Color Family

Black

Color/Finish

Black

Control Type

Phone Controlled, Touchscreen

Features

Auto Changeover, Backlit Display, Built-in Wi-Fi, Daylight Savings Time Ready, Low Battery Indicator, Vacation Mode

Heating & Cooling System Type

2 Stage

Included

Mounting Hardware

Pack Size

1

Power Options

Hardwired

Power Options

Hardwired

Remote Access

Remote Access

Requires Hub?

No Hub Required

Returnable

90-Day

Smart Home

Smart Home Enabled

Smart Home Protocol

Wi-Fi

Thermostat Compatibility

Universal

Thermostat Shape

Square

Thermostat Type

Heating and Cooling

Voice Control Hub Required

No Voice Control

Voltage (V)

24 V

Voltage Type

Low Voltage

Wire Configuration

C-Wire

Works With

Apple HomeKit

Warranty / Certifications

Certifications and Listings

No Certifications or Listings

Manufacturer Warranty

2 year limited warranty

Questions & Answers

Is the display always lit?
ByJul 28, 2026
1 Answer | 
Answer This Question

Hi Jane, thank you for your question. You can adjust the screen idle brightness on a scale from 1 to 5. - Maria

By|Jul 28, 2026


    Can I make this thermostat password protected
    ByJul 22, 2026
    1 Answer | 
    Answer This Question

    Hi Walt, thank you for reaching out. The T5 Smart Thermostat (RTH8800WF) does not have a password feature. If further questions arise, our technical support team is available and ready to assist. You can reach us 7 days a week via phone at 800.468.1502.— Charlie

    By|Jul 23, 2026


      Will this thermostat tell you how long the unit has been running?
      ByJul 11, 2026
      1 Answer | 
      Answer This Question

      Hi Rodney, thank you for your question. The First Alert app will show you the runtime information of your system. - Maria

      By|Jul 13, 2026


        Do you need the app or can you just use Alexa?
        ByJul 7, 2026
        1 Answer | 
        Answer This Question

        Hi Scott, thank you for reaching out! The T5 Smart Wi-Fi thermostat does work with the Alexa App when connected and registered with the Resideo App.— Charlie

        By|Jul 8, 2026


          Does this work with Resideo app for remote monitoring and changing temperature?
          ByJul 4, 2026
          1 Answer | 
          Answer This Question

          Hi Rahul, thank you for your question. This thermostat works with the Resideo app, however we recommend you to use the new First Alert app. - Maria

          By|Jul 7, 2026


            is the Resideo app REQUIRED to make and/or set desired heat/cool programs? Or can the schedule be set or changed by touch screen on the thermostat?
            ByJun 13, 2026
            1 Answer | 
            Answer This Question

            Hi Elaine, thank you for your question. You can control the thermostat and schedule directly from the thermostat screen. If don't want to use the app, you can turn the Wi-Fi feature off. - Maria

            By|Aug 5, 2026

              (1)

              Can the geofencing feature disabled?
              ByJun 13, 2026
              1 Answer | 
              Answer This Question

              Hi Elaine, thank you for your question. Yes, the Geofence schedule can be disabled. You can select to use the Geofence schedule, a time based schedule or no schedule. - Maria

              By|Jun 15, 2026


                What setting can I set where the temperature drops 2 degrees below set point before unit comes back on
                ByJun 10, 2026
                1 Answer | 
                Answer This Question

                Hi Jerry, thank you for your question. Our thermostat have a -+1 degree differential that cannot be adjusted. - Maria

                By|Jun 11, 2026


                  Viewing 1-8 of 123

                  Customer Reviews

                  4.1 out of 5

                  • 4.1 out of 394 reviews
                  • 44% recommend this product
                  Filter by:
                  Showing 1-10 of 394 reviews
                  Awesome thermostat
                  So far the thermostat has been working great, no issue with it at this time . Better than my old one .
                  by
                    • Recommended
                    This customer chose to rate the product and not provide text.
                    by
                    • Verified Purchase
                    Works fantastic and easy to install and program
                    I just installed the t5 Honeywell thermostat. It does exactly what it sez and very easy setup. I had a nest and it stop working after 4 years the internal battery was dead so I researched every thermostat home depot has. All of them have their pro's and con's I decided on this one and I am glad I did. Only time will tell if I made the right choice for now I am very happy with the features and performance I understand about getting something built at 5 o'clock on Friday and sometimes you get a bad product and this might reflect a negative reviews but return it if it doesn't work correctly and get another one you will be happy with this thermostat I am.
                    by
                      • Recommended
                      Crashes from internet connection. Do not recommend
                      Works unless it's connected to the internet. Then it crashes. Disconnect from the internet, it works fine as a regular thermostat. Unfortunately, it can only be setup on a schedule using the app and since it's crashes on the internet, i can't use the schedule feature.
                      by
                        Great product, very easy to install, programmable thermostat that it’s very easy to do the initial setup, app is very easy to download and super fast, also very easy to use, price is very competitive, it looks also very nice on the wall.
                        by
                        Shows wrong temp
                        Has a gods app. I’ve been having issues with the temp it shows. I think it’s wrong as my house is stuffy and hot but the temperature says 72 Fahrenheit. Is there something I need to calibrate?
                        by
                        Response from Resideo TeamMay 7, 2025
                        Hi Gman, our thermostats use the ambient and radiant temperature for the indoor temperature display, so this reading may differ from conventional thermometers. To ensure your thermostat is displaying the correct indoor temperature, please verify there is insulation behind the thermostat wall plate, that there are no drafts within the wall, that the thermostat is not exposed to direct sunlight and that it is distanced from electronics such as TV’s and lights. If the situation persists, please contact our team for further troubleshooting. We are available 7 days a week at (800) 633-3991 or through private message at our Honeywell Home Facebook account. - Maria resideo
                          Disposable unit with poor quality (replaced 4)
                          After installing two new HVAC units in my home over the past 5 years, the HVAC company supplied T5 thermostats as part of a Lenox bundle. In addition, my power company (AEP/PSO) offered T5s as part of a peak demand savings program. I bought a total of 4 T5s (2 spares) thinking I would have backup if one failed. Over the past 5 yrs, all of the units have failed on average after 2 years of service. I cannot get a warranty replacement because these units were purchased from HVAC and power company. If anyone from Resideo / Honeywell would like to respond to this, I'm all ears. Otherwise, I'm moving on to another manufacturer.
                          by
                          Response from Tech SupportFeb 7, 2025
                          Hi KPG-BA, we are sorry to hear about this. T5 models have 2 years of warranty, we will be happy to help troubleshooting and providing warranty information. T6 models have 5 years of warranty through the installer. Visit our Support Center link at the top of the page for ways to get in touch and someone would be happy to help.
                            Buy a Google Nest instead
                            The app is so limited with its programming, it’s barely one step above having a manual dial. The product claims to save money with heating and cooling, but it runs ALL the time, even when target temperature is reached. I have to set it so low in the winter so that it won’t constantly blast me with heat. And if you like sleeping, forget about it. Even in “sleep schedule” mode it kicks on every hour and blasts away. I have tried setting it to 57 degrees overnight so it won’t constantly fire away, but even on a temperature hold, it keeps going. I’m so afraid for what summer will bring if this is the nightmare I’m experiencing in the winter. I miss my Google Nest more than I could imagine.
                            by
                            Response from Customer careJan 14, 2025
                            Hi, thank you for taking the time to rate the T5 smart thermostat. We appreciate the feedback and will utilize your comments as we better improve future updates.
                              Does not last.
                              This product worked fairly well and was easy to install/replace my old thermostat. The app was nice and convenient. However for this price you’d also expect to get more than a 3 years out of it. The display completely went black after 3 years (outside of warranty of course). The only solution offered was to purchase a new thermostats. Luckily I kept the old one, which still works fine, despite being over 8 years old. I’d rather not have to replace my thermostat every few years.
                              by
                                This customer chose to rate the product and not provide text.
                                by
                                • Verified Purchase
                                Showing 1-10 of 394 reviews

                                Compare Key Features

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                                Product Snapshot

                                Great for homeowners looking for energy savings, making temperature control easier and more efficient.
                                Great for homeowners looking for energy savings, making climate control easier and more efficient with smart features.
                                Great for homeowners looking for smart temperature control, making energy saving easier and more efficient.
                                Great for homeowners looking for energy savings and data privacy, making climate control easier and more efficient.

                                Smartphone App Control

                                Learning Capability

                                Energy-Saving Features

                                Voice Control

                                Geofencing