10 Best Amazon Smart Thermostats 2025 in the United States

The Google Nest Learning Thermostat (4th Gen) is a smart thermostat designed to save energy and keep your home comfortable with minimal effort. It works with most 24V heating and cooling systems, including gas, electric, and heat pumps, and usually doesn’t need extra wiring, making installation simpler for most homes. If you enjoy controlling things from your phone or by voice, this thermostat works well with Alexa, Apple HomeKit, and Google Assistant, plus it’s compatible with the latest smart home standards for easy integration.

One of its standout features is the learning ability—it studies your habits and even takes outside weather into account to adjust your home’s temperature naturally. This can help reduce energy bills, with potential savings of around 12% for heating and 15% for cooling. The included Nest Temperature Sensor lets you manage different rooms more precisely, so you can avoid hot or cold spots.

The design is sleek and modern, with a large, bright touchscreen display that adjusts automatically based on the lighting and can show useful info like the time or weather. The thermostat also notifies you before making energy-saving schedule changes, giving you control over adjustments. Installation is generally straightforward, though some older or unusual HVAC systems might need professional help or additional wiring. Since it relies on Wi-Fi, remote controls depend on a stable internet connection. While setup and features might seem a bit complex initially for those new to smart home tech, they are manageable with the Google Home app. This thermostat suits anyone looking to upgrade to a smart, energy-efficient system that blends well with popular smart home ecosystems and offers hands-off comfort management with some manual control when needed.

The ecobee Smart Thermostat Premium is a strong choice for those looking to upgrade their home heating and cooling control with smart technology. It supports a wide range of HVAC systems, including furnaces, heat pumps, and AC units, making it compatible with most homes. Installation is simplified by the included Power Extender Kit, especially helpful if your system lacks a common wire (C-wire), which can make setup easier for many users.

This thermostat shines with its learning capabilities thanks to the included SmartSensor that adjusts temperatures in specific rooms, helping reduce hot or cold spots for better comfort. It also monitors air quality and offers alerts and tips, which is a nice bonus for maintaining a healthier home environment. Remote access through apps and voice control with Siri, Alexa, or Google Assistant lets you adjust settings easily from anywhere, and the built-in speaker can even play music or podcasts.

The design features a large, clear LCD display with a modern look that fits well on the wall, and the device acts as a home monitoring hub with features like smoke detection and alerts for break-ins, though some of these require a paid security plan. Energy-saving features like pausing heating or cooling when windows or doors are left open can add up to savings over time. On the downside, accessing some advanced functions like window/door sensors and security alerts requires additional subscriptions. Also, the Siri voice assistant needs an Apple home hub to work, which may add to the setup complexity for some users. While the thermostat is battery-powered, it needs charging or battery replacement eventually, which may be a small inconvenience. The ecobee Smart Thermostat Premium is well-suited for homeowners wanting a feature-rich, smart thermostat that integrates smoothly with popular voice assistants and smart home systems. Its ease of installation, comfort-enhancing sensors, and air quality monitoring make it a valuable upgrade, especially if you're willing to invest in some optional security features.

The Amazon Smart Thermostat is a modern and energy-efficient device designed to replace traditional thermostats. It's compatible with most 24V HVAC systems but requires a C-wire for operation, which might necessitate additional setup for some users. Installation is simplified with guided steps via the Alexa app, though it may require basic tools like a drill and level.

The thermostat integrates well with Alexa, allowing for voice control and automatic temperature adjustments based on your routines and preferences. However, it does not support 5GHz wifi networks, which could limit connectivity options for some homes. The device uses Honeywell technology, ensuring reliability backed by 130 years of experience.

It also supports temperature sensors through compatible Echo devices, helping to manage hot and cold spots effectively throughout your home. Users can control the thermostat remotely via the Alexa app, and it provides detailed energy reports, contributing to potential savings on energy bills. Its minimalist design includes three touch buttons for easy on-device control. The requirement for a C-wire and compatibility limitations should be considered before purchase. Additionally, while it offers a one-year warranty, some users might prefer longer warranty periods for greater peace of mind.