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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →To reconnect a smart thermostat after a reset, use the Wi-Fi setup steps for its exact brand and model—there is no universal sequence. A network reset, a factory reset, and reconnecting the thermostat to its app are different actions, so don’t factory-reset it again by default. You’ll usually need the thermostat, its companion app if required, and your current Wi-Fi name and password.
Before you reconnect, identify the reset and the model
Check the thermostat’s brand and model or generation, then open the manufacturer’s instructions for that exact device. The reset type matters: a Wi-Fi reset clears network settings; a factory reset can restore broader device settings; and app enrollment links the thermostat to an account. Follow the model’s instructions rather than assuming one reset serves all three purposes.
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- Have the thermostat physically available. Google says users need to be near supported newer Nest thermostats when updating Wi-Fi in the app.
- Know the current network name and password. If your router or Wi-Fi credentials changed, use the new details.
- Have the correct companion app and account ready if the model’s setup route uses them.
Use the setup route for your thermostat
| Thermostat | Where to reconnect | What to do |
|---|---|---|
| Google Nest Learning Thermostat (4th gen) and Nest Thermostat | Google Home app; stay near the thermostat | Choose the thermostat, then open Settings > Device information > Wi-Fi and follow the prompts to select the new network and enter its password. |
| Google Nest Learning Thermostat (3rd gen or earlier) and Nest Thermostat E | On the thermostat | Open Settings > Network, select the new network, and enter its password. |
| ecobee models covered by its Wi-Fi setup guide | On the thermostat | Open Main Menu and Wi-Fi settings, make sure Wi-Fi Radio is enabled, select the network, enter its password, and wait for the success message. Wi-Fi band support varies by model; check the guide for your specific thermostat. |
| Honeywell Home / Resideo T5, T5+, and T6 Pro WiFi | Resideo app, if registered; otherwise device setup | If the thermostat is registered in the app, select it, open its settings, choose “Reset WiFi,” and follow the prompts. If it does not appear or that option is unavailable, choose “Add a New Device” or the plus button and complete setup. |
Official instructions: Google Nest and Home Wi-Fi setup, ecobee Wi-Fi setup and troubleshooting, and Honeywell Home / Resideo Wi-Fi reset for T5, T5+, and T6 Pro WiFi.
Check that the connection is complete
Look for a successful connection message on the thermostat, then check whether it appears online in the appropriate app. A thermostat may connect to Wi-Fi while remaining unavailable in the app; if that happens, address app enrollment separately rather than repeatedly changing the network password.
#1 Best Overall
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Connectivity : Wi-Fi - 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy Please refer to the product description section below for all applicable legal disclaimers.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home. Lock feature: No
- Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
If the thermostat still will not connect
- Recheck the Wi-Fi name and password, then follow the model-specific setup steps again.
- Confirm that Wi-Fi is enabled on the thermostat. For ecobee, the guide specifically directs users to check that Wi-Fi Radio is on.
- Check the manufacturer’s compatibility and troubleshooting guidance for the exact model. For ecobee, do not assume 5 GHz support across the product range.
- Check the router or access point configuration if the thermostat cannot join the network. Google suggests temporarily disabling Wi-Fi range extenders as one Nest troubleshooting test; it is a diagnostic step, not a general recommendation to add equipment.
- If the thermostat joins Wi-Fi but remains offline in the app, use the manufacturer’s app setup or device-enrollment instructions.
For other brands or generations, use the manufacturer’s official support page rather than applying another model’s menu path. Google’s general guidance says that changing Wi-Fi credentials or replacing a router means reconnecting Nest or Home devices to the new network; the steps vary by device.
Related official troubleshooting: Google Nest connectivity troubleshooting.
Quick Recap
Rank #4
- EASY DIY INSTALLATION: Do it yourself fast with a built-in level and simple step-by-step instructions. Works with the HVAC equipment found in most homes
- COMMON WIRE REQUIREMENTS: Common wire(C-Wire) required for heat pump and heat/cool only systems. C-wire not required on most systems
- SAVE ABOUT 23% ON HVAC ENERGY: ENERGY STAR-certified and packed with features that help you save money, including flexible scheduling, geofencing, remote access and usage reports
- PRIVACY PROTECTION: Sensi won’t sell your personal information to third parties or leverage your thermostat activity data for targeting or advertising purposes
- CONTROL FROM ANYWHERE: The top-rated mobile app for Android and iOS devices makes it easy to control your comfort from a smartphone or tablet
Rank #3
- Save up to 23% every year on heating and cooling costs, adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Compared to a hold of 72
- Compatible with 85% of systems, check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
- Change your temperature by easily tapping the color touchscreen or using the ecobee app. Plus, free software upgrades ensure you get the best out of your Smart Thermostat Essential, for years to come
- Automatically adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Keep track of your energy consumption when you're on the go on the ecobee app
- Easy DIY install. No C Wire, no problem. Get the ecobee Power Extender Kit (PEK) for homes without a C-Wire and keep your walls looking nice with our trim kit – both sold separately
Rank #2
- An Alexa thermostat - Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
- Create comfort zones throughout your home by connecting to select Alexa devices to automatically adjust heating and cooling based on temperature readings or presence detection.
- Save money and energy - After purchase, Amazon will send you an email with details about home thermostat rebates that may be available from energy providers in your area.
- Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $90 on yearly energy bills.
- Programmable thermostat and automatic control - Create your own home, away and sleep schedules, or have Alexa automatically control the temperature with Alexa+ advanced features.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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