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4 Best Lennox Smart Thermostat 2025 in the United States

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Our Top Picks

#1

Winner

Lennox S40 (22V24) Smart Thermostat, Touchscreen, WiFi, Communicating System Control, Programmable, High Efficiency, Geo-Fencing, Remote Access, Wi-Fi and Alexa Enabled, Easy Installation

The Lennox S40 (22V24) Smart Thermostat is a modern and efficient thermostat with several appealing features. Its compatibility with various HVAC systems, including high-efficiency setups, makes it versatile for different home environments. The touchscreen interface is user-friendly with a responsive 7-inch display, providing an easy-to-navigate experience.

The thermostat's connectivity is strong, supporting Wi-Fi and integration with Amazon Alexa for voice control, enhancing its convenience. Learning capabilities allow it to adapt to your routines over time, potentially saving energy and cost. The energy reports feature is useful for monitoring and optimizing energy usage.

Geofencing technology is another highlight, automatically adjusting the temperature based on your proximity to home, which is great for energy efficiency and comfort. Remote access via the app ensures you can control the thermostat even when you're away, adding to its convenience. Installation is straightforward, with included components like a smart room sensor and wireless extender aiding in setup and functionality.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
Compatibility
The thermostat integrates seamlessly with Lennox HVAC systems, ensuring reliable performance.
User Interface
The touchscreen interface may have some lag, but the mobile app provides a smooth alternative.
#2

Lennox S40 (22V24) Smart Thermostat, Touchscreen, WiFi, Communicating System Control, Programmable, Geo-Fencing, Remote Access, Alexa Enabled, Easy Installation, Non-Returnable Factory Warranty

The Lennox S40 Smart Thermostat is a high-end, feature-rich device designed for those seeking advanced control over their home heating and cooling systems. It stands out with a 7-inch high-definition touchscreen, providing an intuitive and easy-to-read interface. The system supports various schedules, geofencing features, and a One-Touch Away Mode, making it adaptable to your lifestyle and potentially saving on energy costs. Compatibility is broad, supporting most 24VAC systems, though primarily optimized for Lennox equipment.

The thermostat also integrates seamlessly with smart home systems, including Alexa, Google Assistant, and Apple HomeKit, enhancing user convenience through voice control and remote access via the Lennox Smart app. Installation is straightforward, although it requires a professional HVAC installer to maintain the 10-year warranty, which could be a drawback for DIY enthusiasts. Connectivity through Wi-Fi allows for real-time monitoring and system diagnostics, which helps in maintenance and troubleshooting. However, its reliance on installation by certified professionals could be a limitation for some users. Additionally, the product does not support returning or refunds if not installed professionally, which is a significant consideration before purchase.

The Lennox S40 also includes smart zoning capabilities, supporting whole-home zoning for more customized climate control. Energy reports and advanced accessories, like smart room sensors and air quality monitors, further enhance its functionality. This thermostat is best suited for homeowners looking for robust, smart home integration and advanced features, especially those already using Lennox HVAC systems.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
User Interface
Very easy to set up and connect to Wi-Fi, and it looks good on the wall.
Connectivity
Effectively maintains the right temperature and has not lost the Wi-Fi signal.
#3

Lennox Parts 13H14 7-Day Prog Color Thermostat

The Lennox Parts 13H14 7-Day Prog Color Thermostat offers a variety of features that are quite appealing for those looking to enhance their home climate control. It boasts a 7-day programmable schedule, allowing users to customize their heating and cooling needs throughout the week. This feature is particularly useful for people with varying daily routines.

Additionally, its compatibility with heat pumps, air conditioners, and furnaces makes it versatile for different heating and cooling systems. The remote control method and Wi-Fi connectivity provide convenient control from anywhere, making it easy to adjust settings without needing to be physically present at the thermostat. The LED display is clear and easy to read, enhancing the user interface experience, though the lack of a backlight can be a drawback in low-light conditions.

The thermostat also includes automatic temperature control, which simplifies the management of home climate settings. The relatively light weight and compact dimensions make it easy to install, making the Lennox Parts 13H14 a solid choice for everyday use.

Customer Highlights

A summary of real customer reviews to highlight what shoppers are saying!
User Interface
Very easy to use and works exactly as stated.
Compatibility
Super easy to install with clear instructions, just be aware it defaults to a heat pump setup.

Buying Guide for the Best Lennox Smart Thermostat

Choosing the right smart thermostat can significantly enhance your home's comfort and energy efficiency. A smart thermostat allows you to control your home's heating and cooling system remotely, learn your preferences, and even save on energy bills. When selecting a Lennox smart thermostat, it's important to consider several key specifications to ensure it meets your needs and integrates well with your existing HVAC system.
CompatibilityCompatibility refers to whether the smart thermostat can work with your existing heating and cooling system. This is crucial because not all thermostats are compatible with all HVAC systems. To navigate this, check the specifications of your current system and compare them with the thermostat's compatibility list. If you have a standard HVAC system, most smart thermostats will work. However, if you have a more complex system like a heat pump or multi-stage system, you need to ensure the thermostat supports these features. Choose a thermostat that matches your system to avoid installation issues and ensure optimal performance.
User InterfaceThe user interface is the way you interact with the thermostat, including the display and controls. A good user interface is important for ease of use and accessibility. Smart thermostats typically have touchscreens, physical buttons, or a combination of both. Some offer color displays and intuitive menus, making it easier to navigate settings and schedules. If you prefer a simple, straightforward interface, look for a model with a clear display and easy-to-use controls. For tech-savvy users, a more advanced interface with additional features might be appealing. Consider your comfort level with technology when choosing the right user interface for you.
ConnectivityConnectivity refers to the thermostat's ability to connect to your home's Wi-Fi network and other smart devices. This is important for remote control and integration with smart home ecosystems. Most smart thermostats connect via Wi-Fi, allowing you to control them through a smartphone app or voice assistants like Amazon Alexa or Google Assistant. Some models also support Bluetooth or other wireless protocols. If you want to control your thermostat remotely or integrate it with other smart home devices, ensure it has robust connectivity options. Choose a thermostat that supports the connectivity features you need for seamless integration and control.
Learning CapabilitiesLearning capabilities refer to the thermostat's ability to learn your schedule and preferences over time. This feature is important for optimizing comfort and energy savings. Smart thermostats with learning capabilities can automatically adjust the temperature based on your habits, reducing the need for manual adjustments. Some models use sensors and algorithms to detect when you're home or away and adjust settings accordingly. If you have a predictable routine, a learning thermostat can be very convenient and efficient. For those with irregular schedules, look for a model that allows for manual overrides and custom scheduling.
Energy ReportsEnergy reports provide insights into your energy usage and savings. This feature is important for monitoring and managing your energy consumption. Smart thermostats that offer energy reports can show you how much energy you're using, when you're using it, and how you can save more. Some models provide detailed reports and tips for improving efficiency. If you're interested in tracking your energy usage and reducing your bills, choose a thermostat with comprehensive energy reporting features. This can help you make informed decisions about your heating and cooling habits.
GeofencingGeofencing is a feature that uses your smartphone's location to adjust the thermostat settings automatically. This is important for enhancing convenience and energy efficiency. When you leave a predefined area around your home, the thermostat can switch to an energy-saving mode, and when you return, it can adjust to your preferred settings. If you frequently forget to adjust your thermostat when leaving or arriving home, geofencing can be very useful. Choose a thermostat with geofencing if you want a hands-free way to manage your home's temperature based on your location.

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