10 Best Home Thermostats 2025 in the United States

The Amazon Smart Thermostat is a solid choice if you're looking to upgrade from a traditional thermostat without complexity. It works with most 24V heating and cooling systems but requires a C-wire or a separate power adapter for installation, which might need extra effort if your home lacks one. The installation process is guided step-by-step within the Alexa app, making it approachable even for those who aren't handy, though tools like a drill might be needed.

Smart features stand out here: the thermostat integrates well with Alexa and compatible Echo devices, allowing voice control and automatic temperature adjustments based on your routines or when you’re away. It also supports using Echo devices as temperature sensors to balance different rooms, tackling hot or cold spots effectively. Energy efficiency is another strong point, as it is ENERGY STAR certified and can help save around $50 a year, with additional rebate options from some energy providers.

On the interface side, the thermostat has simple touch buttons for basic control, but full settings and scheduling are managed through the Alexa app, meaning you’ll need a smartphone to access its programmability fully. One limitation is its Wi-Fi connectivity, which only supports 2.4 GHz networks, not the faster 5 GHz bands common in modern homes. Plus, it lacks a built-in microphone, so voice commands depend on a separate Alexa device. For people comfortable with using Alexa and wanting an easy, energy-smart thermostat upgrade, this product fits well. However, if your home lacks a C-wire or if you prefer a thermostat with a more traditional standalone interface, you might need to consider these factors before buying.

The Google Nest Learning Thermostat 3rd Gen is a smart thermostat designed to make home temperature control easy and energy efficient. One of its biggest strengths is its ability to program itself using Auto-Schedule, meaning you don’t have to manually set it up—it learns your preferences over time. It is compatible with many heating and cooling systems, but it's a good idea to use Google’s online compatibility checker before buying. The thermostat supports Wi-Fi and Bluetooth connectivity, allowing you to control it remotely via the Nest app or through voice assistants like Amazon Alexa and Google Assistant, which adds great convenience.

The user interface is simple and friendly: the round stainless steel design includes a clear digital display with backlight, and the device shows a green Leaf icon when you select energy-saving temperatures, helping you reduce your bills. The Home/Away Assist feature automatically adjusts temperature settings when you leave or return, which can lead to additional savings. Installation is designed to be straightforward and includes mounting hardware and a screwdriver, but if you’re unsure, professional installation might be helpful.

On the downside, while the thermostat is battery-powered and wireless, it requires a consistent Wi-Fi connection for full smart functionality. The setup might feel a little technical for some users, especially if their home heating system is complex. Also, since this model was first released in 2015, it lacks some newer features found in the latest smart thermostats, like improved sensors or more advanced integrations. This thermostat suits homeowners looking for an easy-to-use, energy-saving smart thermostat with remote control capabilities and good compatibility with popular smart home systems. It is ideal for those who want to reduce energy consumption without fussing over programming schedules.

The Google Nest Learning Thermostat (4th Gen) is an impressive choice for those looking to enhance their home comfort while saving on energy bills. One of its standout features is its compatibility with a variety of heating and cooling systems, making it suitable for many households without the need for a C wire for installation. The included Nest Temperature Sensor adds value by allowing you to manage temperature variations in different rooms effectively.

This thermostat excels in programmability. It learns your temperature preferences and suggests adjustments to save energy, achieving an estimated 12% savings on heating bills and 15% on cooling bills. The Smart Schedule feature is particularly helpful for those who want a tailored heating and cooling experience without daily adjustments.

In terms of smart features, it integrates seamlessly with Alexa and Google Home, allowing for voice control, which is convenient for users who prefer hands-free operation. The user interface is user-friendly, with a large, borderless display that adjusts brightness based on the room's lighting, ensuring visibility from different angles.

There are a few drawbacks to consider. Although installation is generally straightforward, some users may still find it challenging if they're not comfortable with basic wiring. Additionally, while the thermostat is praised for energy savings, the initial investment can be higher than traditional thermostats, and some users might not experience the same level of savings depending on their specific usage patterns. The Google Nest Learning Thermostat's sleek design and high-quality materials make it an attractive addition to any home. It's ideal for tech-savvy individuals or families who prioritize comfort and efficiency. However, users who prefer simpler, non-smart devices or are on a tight budget might want to explore other options.