Can I Control My Smart Thermostat With My Phone?

21 minutes read

Yes, you can control your smart thermostat with your phone. Most modern smart thermostats come equipped with mobile app compatibility, allowing you to manage and adjust your home's temperature remotely. By downloading the corresponding app on your smartphone, you can access features such as setting temperature schedules, monitoring energy usage, and receiving notifications about system performance. The app typically connects to your thermostat via Wi-Fi, providing you with the convenience of managing your thermostat from anywhere with an internet connection. This integration not only enhances convenience but also makes it easier to optimize energy efficiency and comfort in your home.

Best Smart Thermostats of February 2025

1
ecobee New Smart Thermostat Premium with Smart Sensor and Air Quality Monitor - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant

Rating is 5 out of 5

ecobee New Smart Thermostat Premium with Smart Sensor and Air Quality Monitor - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant

  • Save up to 26% per year on heating and cooling costs. ENERGY STAR certified. Included SmartSensor (50 dollar value) adjusts the temperature in the rooms that matter most to reduce hot or cold spots to keep you comfortable. Compared to a hold of 72°F.
  • Built-in air quality monitor alerts you to poor air quality, provides tips on how to improve it, and reminds you when it’s time to change your furnace’s air filter.
  • Premium materials and advanced engineering mean a large, vibrant display with a cinematic interface, a timeless design, and next level occupancy sensing.
  • Compatible with most 24VAC HVAC systems: furnaces, ACs (2H/2C), heat pumps (2H/2C + 2 stage AUX), boilers, PTACs, and fan coil units (3 fan speeds). Includes Power Extender Kit for C-Wire-less homes, ensuring easy installation.
2
Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Snow

Rating is 4.9 out of 5

Google Nest Thermostat - Smart Thermostat for Home - Programmable Wifi Thermostat - Snow

  • 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. Lock feature: No
  • Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home; easily program an energy efficient schedule in the Google home app on your Android or iPhone
  • Control Nest Thermostat with Google Home and other smart home platforms. Compatible with Google Assistant and all Matter-certified voice assistants. Voice control requires a compatible smart device.
3
ecobee3 Lite Smart Thermostat - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - DIY Install, Black

Rating is 4.8 out of 5

ecobee3 Lite Smart Thermostat - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - DIY Install, Black

  • Save up to 23% annually on heating and cooling costs (compared to a hold of 72°F)
  • Control from anywhere using your Android or iOS device
  • Add SmartSensor to manage hot or cold spots and deliver enhanced comfort to the rooms that matter most
  • ecobee was named an ENERGY STAR Partner of the Year award winner
  • Integrates seamlessly with your preferred smart home system. Connectivity - Wi-Fi, 802.11 b/g/n @ 2.4 GHz
4
Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required

Rating is 4.7 out of 5

Amazon Smart Thermostat – Save money and energy - Works with Alexa and Ring - C-wire required

  • Smart upgrade - Amazon Smart Thermostat is an easy way to switch from a traditional thermostat and help reduce energy usage.
  • Save money - After purchase, Amazon will send you an email with details about rebates that may be available from energy providers in your area. Explore rebates above.
  • Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $50 on yearly energy bills.
  • Automatic Control - Alexa can automatically switch between your preferred home, away, and sleep temperatures.
  • On-the-go control - Let Alexa set the temperature, or set it yourself from anywhere with the Alexa app.
5
Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, Gray

Rating is 4.6 out of 5

Honeywell Home RTH9585WF1004 Wi-Fi Smart Color Thermostat, 7 Day Programmable, Touch Screen, Energy Star, Alexa Ready, Gray

  • COMFORT COMES IN YOUR COLOR. Personalize your Wi-Fi Smart Color Programmable Thermostat to fit your décor.
  • YOUR SCHEDULE. YOUR WAY. Flexible programming options for your schedule or utility company’s peak rate pricing.
  • EASY OPERATION AND INTUITIVE. Bright, easy-to-read touchscreen makes for simple operation.
  • 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.
  • ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use.
  • Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.
  • Fan Control Options include On: Fan is always on; Automatic: Fan runs only when the heating or cooling system is on; and Circulate: Fan runs randomly about 35% of the time.
6
Google Nest Learning Thermostat - 3rd Gen (2015) - Programmable Smart Thermostat for Home - Works with Alexa - Stainless Steel

Rating is 4.5 out of 5

Google Nest Learning Thermostat - 3rd Gen (2015) - Programmable Smart Thermostat for Home - Works with Alexa - Stainless Steel

  • Home/Away Assist: don't heat or cool an empty home. Home/Away Assist adjusts the temperature after you leave.
  • Remote control: Control your thermostat from anywhere using the Nest app.
  • Know more, save more Check your Energy History to see how much energy you use and why.
  • Look for the Leaf: The Nest Leaf appears when you choose a temperature that saves energy.
7
Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75 Black 5.625" x 3.4" x 1.17"

Rating is 4.4 out of 5

Emerson Sensi Touch Wi-Fi Smart Thermostat with Touchscreen Color Display, Works with Alexa, Energy Star Certified, C-wire Required, ST75 Black 5.625" x 3.4" x 1.17"

  • PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
  • SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling, remote access and usage reports
  • SLEEK, MODERN DESIGN: The large color display features easy-to-read temperatures and intuitive menus. Available in black, white and silver to complement your home décor
  • CONTROL FROM ANYWHERE: Remotely control your home comfort from your smartphone or tablet using the Sensi mobile app for Android and iOS devices
8
ecobee New Smart Thermostat Enhanced - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - Smart Home

Rating is 4.3 out of 5

ecobee New Smart Thermostat Enhanced - Programmable Wifi Thermostat - Works with Siri, Alexa, Google Assistant - Energy Star Certified - Smart Home

  • Save up to 26% per year on heating and cooling costs. ENERGY STAR certified. Automatically adjusts the temperature when you’re away to never heat or cool an empty home. Compared to a hold of 72°F.
  • Enjoy comfort without compromise. Smart Thermostat Enhanced preheats or precools your home before you arrive, so it’s the perfect temperature the moment you walk in. Automatically adjusts to your desired temperature when you’re home or sleeping to keep you comfortable day and night. Adjusts the temperature to account for humidity so your home always feels like the temperature you’ve set.
  • ecobee Smart Thermostat Enhanced is made with quality materials and designed to last on your wall for over a decade. It’s hardwired so you never have to worry about losing control or replacing batteries. If you run into problems, our dedicated support team is available 7 days a week.
  • Add in a SmartSensor which allows you to measure the temperature in rooms that matter most, like the nursery or bedroom. It reads temperature and movement in whatever room it is placed in for complete home monitoring and energy savings (SmartSensor sold separately).
9
Google Nest Thermostat E - Programmable Smart Thermostat for Home - 3rd Generation Nest Thermostat - Works with Alexa,White

Rating is 4.2 out of 5

Google Nest Thermostat E - Programmable Smart Thermostat for Home - 3rd Generation Nest Thermostat - Works with Alexa,White

  • Remote control lets family members change the temperature on this smart thermostat from anywhere using a phone, laptop, or tablet[1]
  • The Nest Leaf appears when you choose a temperature that saves energy; with Energy History, just check your phone to see how much energy you used and find out how to save mo
  • Works with the Nest Temperature Sensor (sold separately) to help make sure a certain room is the exact temperature you want it to be
  • Works with Alexa, Google Assistant, and other smart speakers so you can adjust the temperature with your voice
  • Designed to fit any home, with a frosted display that blends into the background
  • Easy installation, typically in 60 minutes or less, with everything you need included in the box; compatible with 95% of heating and cooling systems


How to set up a smart thermostat with a mobile app?

Setting up a smart thermostat with a mobile app typically involves several steps, which can vary depending on the brand and model of the thermostat. Here's a general guide to get you started:

1. Check Compatibility

  • Before you proceed, ensure that your heating and cooling system is compatible with the smart thermostat you're installing.

2. Gather Tools and Equipment

  • You might need a screwdriver, a drill (if new holes are required), and your smartphone or tablet with internet access.

3. Turn Off Power

  • Turn off the power to your HVAC system by switching off the appropriate circuit breaker. This will ensure your safety and prevent any electrical damage.

4. Remove the Old Thermostat

  • Remove the cover of the old thermostat and take a picture of the wiring for reference.
  • Label the wires using the included labels in your smart thermostat package.
  • Disconnect the wires and remove the old thermostat.

5. Install the New Thermostat Base

  • Attach the new thermostat base to the wall. Use the existing holes if possible, or drill new ones if necessary.

6. Connect the Wires

  • Connect the wires to the appropriate terminals on the new thermostat base following the labels you applied earlier.

7. Attach the Thermostat

  • Once the wiring is complete, attach the thermostat display unit to the mounted base.

8. Restore Power

  • Turn the power back on to the HVAC system at the circuit breaker.

9. Download the Mobile App

  • Download the manufacturer’s app from the App Store (iOS) or Google Play Store (Android) onto your smartphone or tablet.

10. Create an Account or Sign In

  • Open the app and create an account if you don't already have one. If you do, simply sign in.

11. Follow In-App Instructions

  • Follow the on-screen instructions in the app to connect the thermostat to your Wi-Fi network. This usually involves connecting to the thermostat’s temporary Wi-Fi network first, then transitioning it to your home’s Wi-Fi.

12. Finish Setup in the App

  • Complete the setup process in the app, which may include setting your preferences, scheduling, and other custom settings like Home/Away Assist.

13. Test Your Thermostat

  • Confirm that your thermostat is working by adjusting the temperature through the app and checking that the HVAC system responds accordingly.

14. Explore Advanced Features

  • Once setup is complete, explore any advanced features your thermostat might offer, such as energy reports, geofencing, or integration with smart home systems.

Troubleshooting Tips:

  • Poor Wi-Fi Connectivity: Make sure your Wi-Fi network is stable and that your phone is connected to it during setup.
  • Password Entry: Double-check the Wi-Fi password is correct.
  • Compatibility Issues: If problems persist, refer to the user manual or contact customer support.


Each brand—such as Nest, Ecobee, Honeywell—has its own specific instructions, so it’s recommended to consult the user manual that comes with your thermostat for any brand-specific instructions.


How to disable a smart thermostat's data collection?

Disabling data collection on a smart thermostat involves a few steps, which can vary depending on the brand and model. Here are some general guidelines to help you:

  1. Check the User Manual or Online Resources: Start by consulting the user manual that came with your thermostat. It might have specific instructions for disabling data collection. Alternatively, the manufacturer's website or support forums might also provide guidance.
  2. Access the Thermostat’s Settings: Navigate to the settings menu on the thermostat itself. This usually involves interacting with the touchscreen or physical buttons.
  3. Look for Privacy Settings: Modern smart thermostats often have a section dedicated to privacy or data management. Within this section, you might find options to limit or turn off data collection.
  4. Disable Wi-Fi Connectivity: One way to stop data transmission is by disconnecting the thermostat from your Wi-Fi network. This can often be done through the connectivity settings. However, doing this might limit some smart features.
  5. Adjust App Settings: If you use a companion app on your smartphone, check the app's settings for privacy controls. You might be able to adjust what data is shared or disable certain features that require data collection.
  6. Opt-out of Data Sharing: Some manufacturers allow you to opt-out of data sharing programs directly from the thermostat or through their customer support.
  7. Contact Customer Support: If you're having trouble finding the right settings, contact the thermostat manufacturer for guidance on disabling data collection.
  8. Consider Factory Settings: As a last resort, you can perform a factory reset on the thermostat, which might revert it to a state where you can set it up without enabling data collection features again.


Remember, disabling data collection might limit certain functionalities, such as remote control via smartphone, energy usage reports, and adaptive learning features. Consider the trade-offs before proceeding.


How to customize temperature settings for multiple zones?

Customizing temperature settings for multiple zones typically involves the use of a zoned HVAC (Heating, Ventilation, and Air Conditioning) system or smart thermostats tailored for multi-zone management. Here's a general guide on how you can achieve this:

  1. Zoned HVAC System: Installation: Ensure you have a zoned HVAC system, which includes multiple dampers and thermostats installed for each zone. If not, you might need a professional HVAC contractor to set it up. Control Panel: Familiarize yourself with the central control panel, which allows you to manage individual zones. This panel might be a physical device or a digital interface. Thermostats: Make sure each zone has its own thermostat. This allows localized control over the temperature in each area. Set Temperatures: Program each thermostat to the desired temperature specific to each zone. You can often set schedules for different times and days. Adjustments: Use the control panel to make real-time adjustments or schedule changes across the zones as required.
  2. Smart Thermostats: Device Setup: Install smart thermostats compatible with your system. Ensure they support zoned heating and cooling if you are installing them in multiple zones. App or Hub Control: Use the smartphone app or smart home hub associated with your thermostats. This provides centralized control over all devices. Programming and Automation: Set custom schedules and automation for different zones. You can often program these in the app to adjust automatically based on time of day, occupancy, or external weather conditions. Remote Access: Take advantage of the ability to control and customize temperatures remotely via the app.
  3. Integration with Smart Home Systems: Voice Control: If your smart thermostats are compatible, integrate them with voice assistants (like Alexa, Google Home, or Apple HomeKit) to manage zones with voice commands. IFTTT and Automation Rules: Use services like IFTTT (If This, Then That) to create custom automation rules that can trigger temperature changes based on various conditions, like leaving home or returning.
  4. Usage Tips: Zone Prioritization: Identify high-priority zones where comfort is most important and adjust settings accordingly. Energy Efficiency: Balance comfort with efficiency by lowering temperatures in unused areas or during times when those zones are not occupied. Regular Updates: Periodically review and update your temperature settings to accommodate changes in your routine or seasonal weather shifts.


Remember that the specific steps may vary depending on the make and model of your HVAC system or thermostats, so consulting the user manuals or manufacturer support can provide more tailored guidance.


What is two-factor authentication for smart thermostat apps?

Two-factor authentication (2FA) for smart thermostat apps is a security measure that adds an extra layer of protection to your account beyond just a username and password. When 2FA is enabled, accessing the smart thermostat app requires two forms of verification. Here's how it typically works:

  1. Primary Factor – Password: The user starts by entering their usual login credentials, which typically consist of a username (or email) and a password. This is the first layer of security.
  2. Secondary Factor – Additional Verification Step: After the initial login credentials are entered correctly, the user must provide a second form of verification. This may involve: A One-Time Code (OTP): Sent to the user through an authenticating app, text message (SMS), or email. The user must enter this code within a short time frame to gain access. App-Based Authentication: Using an authenticator app (like Google Authenticator or Authy) that generates time-based, one-time passcodes. Biometrics: Some smart devices might use biometric data, such as fingerprint scanning or facial recognition, as the second factor.


The purpose of two-factor authentication is to ensure that even if someone else obtains your password, they still cannot access your account without having access to the second factor. This is particularly important for smart thermostat apps, as these apps often allow remote control of a home's heating and cooling system, making them a potentially attractive target for unauthorized access. Implementing 2FA helps to significantly reduce the risk of unauthorized access and provides users with enhanced security and peace of mind.

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