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10 Best Temperature Thermostats Tested for Energy Savings in 2025

Fact checked by Isabella Faith
Last Updated December 29, 2024
Editor's Choice
1
Google Nest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat with Adaptive Eco - Works with Alexa and Google Home App - Polished Silver

Google

Google Nest Learning Thermostat (4th Gen, 2024) with Nest Temperature Sensor - Energy Saving Smart Thermostat with Adaptive Eco - Works with Alexa and Google Home App - Polished Silver

9.8 Energy Efficient
9.7 Smart Learning
9.5 Premium Design

Why we love it

Learns temperature preferences automatically and creates optimal schedule for energy savings
60% larger borderless display with dynamic visibility from across the room
Compatible with most 24V systems and includes advanced temperature sensor

Main highlights

Key Features

Advanced learning capabilities, energy-saving algorithms, premium design with large display, and comprehensive smart home integration

Ideal for energy-conscious homeowners

Perfect for households seeking automated climate control while reducing energy bills through smart scheduling and natural heating cooling

Praised for intelligent automation

Users appreciate its ability to learn preferences, adjust automatically to save energy, and provide convenient control through mobile apps

9.9

Good

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5
Honeywell Home RTH8800WF2022, T5 WiFi Smart Thermostat, 7 Day-Programmable Touchscreen, Alexa Ready, Geofencing Technology, Energy Star, C-Wire Required

Honeywell Home

Honeywell Home RTH8800WF2022, T5 WiFi Smart Thermostat, 7 Day-Programmable Touchscreen, Alexa Ready, Geofencing Technology, Energy Star, C-Wire Required

Main highlights

  • High use of the scheduling feature of the T5 thermostat saved customers between 8 and 16% on heating and cooling bills. Dollar savings range based on nationwide average annual single-family detached home's heat and cooling bills; actual savings varies based on consumption.
  • Save Energy and Get Rewarded. Check with your energy provider about available energy savings rebates to save on your purchase. Plus, eligible customers can enroll in their local Utility's "DEMAND RESPONSE PROGRAM" which can reward you for allowing the utility to slightly adjust your AC or furnace temperature settings when there is high energy demand.
  • 7-Day Flexible Scheduling or Location Based Temperature Control. It’s your choice. 7-day scheduling programs your thermostat. Geofence technology helps make you comfortable by using your smartphone’s location to know when you’re away and when you return.
  • Auto Home and Away Mode. Enjoy ideal temperatures at home, then save when away.
  • ENERGY STAR certified. Help save energy, track your heating and cooling with monthly energy reports and get personalized tips on reducing energy use.
  • C-WIRE POWER ADAPTER REQUIRED: Before purchasing, check to see if this thermostat is compatible with your home and to determine if your home needs a C-wire power adapter.
  • Works with most heat/cool oil furnace systems. Will not work with heating only oil furnace systems unless a C-Wire is present.
  • The T5 thermostat is ENERGY STAR certified and you can program it based on your schedule, or let it adapt to your life as plans change

9.0

Excellent

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10
meross Smart Thermostat for Electric Baseboard and in-Wall Heaters Work with Apple Home, Alexa, Google Home and SmartThings, with Voice & Remote Control, Power Monitor, Easy Setup, Energy Saving

meross

meross Smart Thermostat for Electric Baseboard and in-Wall Heaters Work with Apple Home, Alexa, Google Home and SmartThings, with Voice & Remote Control, Power Monitor, Easy Setup, Energy Saving

Main highlights

  • Easy to Install: It takes less than 30 mins to install your smart thermostat, compatible with the Electric Baseboard, Convector, Fan-Forced Heater and In-Ceiling Radiant. : .
  • For High Voltage Systems: Smart thermostats are designed for high voltage systems and has a maximum output load of 16A, 1920W at 120V, and 3840W at 240V. It works with high-voltage electric baseboard, convector, and fan-forced systems
  • Smart Integrations: Compatible with Apple Home, Alexa, Google Home, and SmartThings. The electric baseboard thermostat supports voice control through Siri, Alexa, and Google, allowing you to change the current temperature with voice commands and freeing your hands
  • Schedule: Smart Thermostats for home allow you to automatically control the heating via the Meross app using a schedule. With a 7x24 hours smart graphic schedule, you can easily save on heating costs by programming your desired temperature settings
  • High Accuracy: Programmable thermostat offers 1℉ temperature accuracy with an adjustable temperature of 41℉-95℉, ensuring precise temperature control and setting your desired comfort level. The thermostat is equipped with a pure white LCD display, perfectly integrated into the wall, creating a sleek and seamless look
  • Energy monitor: The smart thermostat supports energy monitoring, enabling you to track power consumption and live a low-carbon life. Equipped with an internal electricity meter, the Meross app provides real-time reports on the power consumption of your devices, as well as historical data
  • Open Window Detection: When you open a window for ventilation, it automatically stops heating for a while to help you save even more on your electricity bill
  • Home Automation: Easily control and trigger lights, plugs, switches, and appliances using the Meross, Apple Home, Alexa, or Google Home apps when the temperature meets your specified conditions. This allows for seamless home automation and integration of your smart devices
  • Summer Mode: If your system supports cooling during the summer season, the thermostat can effectively control and regulate the cooling functionality
  • Power-off Memory: Any abrupt power failures or the need to cut off the power during a program cycle,the present settings will be saved and the preset operation will resume when the power is on again

8.2

Very Good

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