Smartest Thermostats of 2025 Ranked for Savings

A smart thermostat can make heating and cooling your home more efficient while helping you save on energy bills. These devices allow you to control your home’s temperature remotely and can learn your preferences to create automated schedules.

However, choosing the right smart thermostat isn’t always straightforward. Compatibility with smart home platforms like Amazon Alexa, Google Home, or Apple HomeKit varies, and only a few support Matter, a new smart home standard that improves cross-platform integration.

Currently, the Google Nest Learning Thermostat (Gen 4) is one of the only Matter-compatible models available.

To help you make an informed decision, we tested and ranked the best smart thermostats of 2025 from brands like Google Nest, Ecobee, Honeywell, and Hive. Below, we break down the top choices based on price, features, and compatibility.

People’s favorite smart thermostat
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Best Overall Smart Thermostat: Google Nest Learning Thermostat (Gen 4)

The Google Nest Learning Thermostat (4th Gen) is one of the most advanced smart thermostats available. It features AI-enhanced scheduling that learns your heating and cooling preferences and adjusts automatically. With a sleek design and high-resolution display, it blends well with any home decor.

Key Features

Self-learning AI that adjusts temperature based on your habits
Remote control via smartphone app or voice assistant
Matter compatibility (works with Google Home and Alexa, but not Apple HomeKit)
Energy-saving reports to track usage

Pros & Cons

Pros:

Learns your schedule and adjusts automatically
Works well with other Nest smart home devices
Sleek design with a high-resolution screen

Cons:

No zonal control (can’t adjust temperature in different rooms separately)
Doesn’t support Apple HomeKit

Who Should Buy It?

This thermostat is ideal if you want a device that learns and adjusts without constant manual input. It’s also a great choice if you already use other Google Nest products like the Nest Doorbell or Nest Cam. However, it is currently available only in the U.S. and Canada.

Best Budget Smart Thermostat: Drayton Wiser

If you’re looking for an affordable way to control your home’s heating, Drayton Wiser is a strong contender. While it may not be the most stylish option, it supports Alexa and Google Assistant, offers zonal control, and includes an open-window detection feature to reduce energy waste.

Key Features

Works with Alexa & Google Assistant
Open-window detection to prevent unnecessary heating
Zonal heating control for individual rooms
More affordable than many competitors

Pros & Cons

Pros:

Lower price than competitors
Zonal heating control for room-by-room temperature adjustments
Simple setup and easy-to-use app

Cons:

Cheap plastic design
Not available in the U.S. (UK only)

Who Should Buy It?

This thermostat is best for those who want zonal control on a budget. It’s also a good choice if you need basic voice control through Alexa or Google. However, it’s only available in the UK.

Honeywell Evohome thermostat — Credits: TechRadar

Best for Underfloor Heating: Honeywell Evohome

The Honeywell Evohome is perfect for homes with underfloor heating or multiple radiators. It allows you to set different temperatures for each room with smart radiator valves. The Wi-Fi connectivity and simple touchscreen interface make it user-friendly.

Key Features

Supports underfloor heating and radiator control
Zonal heating with separate room sensors
Remote control via smartphone app
Durable and long-lasting design

Pros & Cons

Pros:

Best thermostat for homes with underfloor heating
Zonal control lets you customize temperatures per room
User-friendly touchscreen

Cons:

Expensive compared to competitors
Not the most attractive design

Who Should Buy It?

If your home has underfloor heating or multiple radiators, this thermostat provides the most precise temperature control. It’s also a good choice for those who need durable and reliable equipment.

Best for Alexa Users: Hive Thermostat (2024)

The Hive Thermostat (2024) is designed for those who use Amazon Alexa. It provides insights on energy usage, making it easier to identify ways to save money on heating bills. The touchscreen display is simple, and the app allows you to schedule and track heating expenses.

Key Features

Seamless integration with Alexa, Google Home, and Apple HomeKit
Smart energy tracking to monitor heating costs
Touchscreen interface for easy adjustments
Hive Hub is required for remote access

Pros & Cons

Pros:

Best thermostat for Alexa users
Helps track energy spending
Works with multiple smart home platforms

Cons:

Requires Hive Hub for full functionality
Additional accessories (like radiator valves) can be costly
Only available in the UK

Who Should Buy It?

This is a great option if you use Alexa and want an easy-to-use thermostat. It’s also useful for those who want to track their energy use more closely. However, it is primarily available in the UK.

Comparison Table: Best Smart Thermostats of 2025

Thermostat Model	Best For	Smart Home Compatibility	Zonal Control	AI Learning	Price Range
Google Nest Learning Thermostat (Gen 4)	Best Overall	Google Home, Alexa (Matter-compatible)	No	Yes	High
Drayton Wiser	Best Budget	Alexa, Google Assistant	Yes	No	Low
Honeywell Evohome	Best for Underfloor Heating	Alexa, Google Assistant	Yes	No	High
Hive Thermostat (2024)	Best for Alexa	Alexa, Google Home, Apple HomeKit	No (requires add-ons)	No	Medium

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Conclusion: Key Takeaways Before Buying a Smart Thermostat

Choose based on your needs. If you want AI-powered learning, go with Google Nest Learning Thermostat. If you need an affordable option, Drayton Wiser is a good choice.
Check compatibility. Not all thermostats work with all platforms. If you use Apple HomeKit, avoid Google Nest models.
Zonal control matters. If you want room-by-room control, choose Drayton Wiser or Honeywell Evohome.
Energy savings take time. While smart thermostats help reduce bills, they don’t pay off immediately.
Installation may require professional help. Some thermostats are easy to install, but others may need expert assistance.

By selecting the right smart thermostat, you can enjoy convenience, energy savings, and better temperature control in your home. Whether you’re looking for a budget-friendly option, zonal control, or AI-powered automation, there’s a smart thermostat to meet your needs in 2025.