10 Best Thermostats 2025 in the United States

The Amazon Smart Thermostat offers a user-friendly upgrade from traditional thermostats, especially for those who want to manage their home's temperature with smart technology. It works well with most 24V HVAC systems but requires a C-wire or a separate power adapter, which is important to check before purchasing. Installation is guided through the Alexa app, making it accessible for DIY users, although some basic tools might be needed.

This thermostat supports programmability with up to seven daily schedule periods, allowing you to tailor heating and cooling to your lifestyle. Smart features include compatibility with Alexa and Ring devices, and the ability to use certain Echo devices as temperature sensors to fix hot or cold spots in your home. Alexa’s “Hunches” feature learns your routine to automatically adjust temperatures when you’re away or asleep, adding convenience and potential energy savings.

The user interface is simple, with three touch buttons on the device and voice control available through Alexa-enabled devices. However, it lacks a built-in microphone, so voice commands require another Alexa device. Control is possible remotely via the Alexa app, letting you adjust settings on the go. ENERGY STAR certification supports its energy-saving features, with estimated savings of about $50 per year on energy bills. Amazon also provides information on local rebates, which can add extra savings. Note that it only connects to 2.4 GHz Wi-Fi networks and is not compatible with high-voltage systems like electric baseboard heating.

This thermostat is ideal for users seeking an affordable, reliable smart thermostat with solid Alexa integration and basic programmability. It works best in homes with compatible HVAC systems and for those comfortable using Alexa devices or apps for control.

The Google Nest Thermostat is a smart, Energy Star–certified thermostat designed to help you save energy and keep your home comfortable. It works well with many heating and cooling systems, but you should check compatibility beforehand since some setups require an additional power wire. You can easily program temperature schedules using the Google Home app, and it adjusts automatically when you leave home to avoid wasting energy. The thermostat supports remote control from smartphones, tablets, or computers, letting family members make changes from anywhere. It also offers helpful energy-saving suggestions via the app and tracks your HVAC system for maintenance alerts, which can prevent costly repairs. Voice control works smoothly with Google Assistant and Alexa, making temperature adjustments hands-free if you have the right smart devices.

Installation is generally straightforward with included mounting hardware, though the need for a C wire in some homes might complicate things a bit for those unfamiliar with wiring. The user interface is clear, with a bright LCD screen and button controls, though it doesn’t have a lock feature to prevent changes by others. Battery-powered operation means you don’t need to rely fully on home wiring, but expect to replace batteries occasionally.

For those seeking a smart, easy-to-use thermostat that integrates well with other smart home devices and emphasizes energy savings, the Google Nest Thermostat is a strong option. However, if your heating or cooling system isn’t compatible or you prefer a simpler non-programmable thermostat, it may be worth considering other alternatives.

The Google Nest Learning Thermostat (4th Gen, 2024) is a smart, energy-saving device that can bring both convenience and efficiency to your home. One of its top strengths is compatibility; it works with most 24V systems common in households, including gas, electric, and heat pump systems, and generally doesn't require complex wiring. This makes it accessible for many users. Installation is relatively straightforward, typically taking around 40 minutes, which is a plus for those who prefer DIY projects. The included Nest Temperature Sensor helps manage hot and cold spots, ensuring that every room can be comfortable, and it integrates well with the Google Home app for easy control and monitoring.

Its smart features are impressive; the device can learn your preferred temperatures and schedules, suggesting energy-saving adjustments you can approve through the app. It also works with Amazon Alexa, allowing for voice control, adding a layer of convenience. Energy savings are another big advantage, with an estimated reduction of 12% on heating and 15% on cooling bills. This makes it a particularly good choice for budget-conscious and eco-friendly users. The user interface is sleek and modern, featuring a polished obsidian finish and a large, easy-to-read display that adjusts brightness automatically or can be manually controlled.

However, there are a few drawbacks. The initial cost might be high for some, and while installation is generally easy, those with less common heating and cooling systems might find it more challenging. Additionally, the reliance on a stable Wi-Fi connection for smart features could be a limitation in areas with poor internet connectivity. In summary, the Google Nest Learning Thermostat (4th Gen) is ideal for those looking for an advanced, user-friendly smart thermostat that offers significant energy savings and broad compatibility.