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Reconnect your thermostat using the instructions for its exact brand and generation; there is no universal setup sequence. A Wi-Fi reset, a factory reset, and adding a thermostat back to its app are different actions, so don’t factory-reset it again by default. First identify the model, then follow the matching route below.
Before you start
- Find the thermostat’s brand and model or generation. If you are unsure, check its settings screen, the app, or the label on the device.
- Have the thermostat nearby, the companion app and account it uses, and the current Wi-Fi network name and password ready.
- Use the manufacturer’s instructions for your precise model. The routes below apply only to the models identified; they should not be assumed to work for other generations or brands.
Reconnect by thermostat brand
Google Nest
The steps differ by generation. For the Nest Learning Thermostat (4th gen) and Nest Thermostat, use the Google Home app: select the thermostat, open Settings, choose Device information, then Wi-Fi. Google says you need to be near the thermostat while updating Wi-Fi for supported newer models.
For the Nest Learning Thermostat (3rd gen or earlier) and Nest Thermostat E, use the thermostat itself: open Settings, choose Network, select the new network, and enter its password. See Google’s instructions for connecting Nest or Home devices to a new Wi-Fi network.
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On the thermostat, open Main Menu and its Wi-Fi settings. Make sure Wi-Fi Radio is enabled, select your network, enter the password, and wait for the success message. Wi-Fi band support varies by model: ecobee’s setup guidance notes that only certain models support 5 GHz, so check its Wi-Fi setup and troubleshooting instructions for your thermostat rather than assuming every model supports the same networks.
#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]
Honeywell Home / Resideo T5, T5+, and T6 Pro WiFi
If the thermostat is registered in the Resideo app, select it, open its settings, choose Reset WiFi, and follow the prompts. If the thermostat does not appear in the app or that control is unavailable, use Add a New Device or the plus button and follow setup. These are separate routes in the model-specific Honeywell Home Wi-Fi reset instructions.
Another brand or model
Do not transfer one brand’s menu path to another thermostat. Find the exact model in the manufacturer’s official support site and follow its Wi-Fi reconnection instructions. If the device was removed from its app during a reset, look for the manufacturer’s app-enrollment or add-device procedure as well as Wi-Fi setup.
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.
Check that reconnection worked
- Wait for the thermostat to report a successful Wi-Fi connection or show the new network as connected.
- Open the companion app and confirm that the thermostat appears online. The device’s Wi-Fi connection and its app enrollment are separate checks.
- If the thermostat connects to Wi-Fi but remains offline in the app, troubleshoot app enrollment for that model rather than repeatedly changing the Wi-Fi password.
If the thermostat still will not connect
- Recheck the network name and password, then follow the manufacturer’s troubleshooting steps for the exact model.
- Check the router or access-point configuration against the thermostat’s documented network requirements. For ecobee, in particular, verify the model’s supported Wi-Fi band rather than assuming 5 GHz compatibility.
- For Nest, Google’s troubleshooting guidance suggests temporarily disabling Wi-Fi range extenders as a diagnostic step. If you try this, test the thermostat’s connection again with the extender off; it is not a recommendation to buy an extender. See Google’s Nest connectivity troubleshooting.
- If the manufacturer’s steps do not resolve the issue, contact its support with the model, any error message, and whether the thermostat connects to Wi-Fi but fails to appear online in the app.
Choose the right kind of reset
A Wi-Fi or network reset changes the thermostat’s network connection. A factory reset can affect broader device settings, while app re-enrollment addresses whether the thermostat is linked to the companion app. Which action is appropriate depends on the model and what was reset; follow its official instructions instead of repeating a factory reset as a general fix.
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
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.
