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What Is the Best Home Thermostat in 2021?

In ancient times kings and queens had their courtiers stand by their side waving big fans when it was hot. In the twenty-first century we can all live like kings and queens, thanks to technological developments like the smart thermostat.

Smart thermostats manage your home’s cooling and heating for you. They use AI to learn your schedule and motion sensors and geofencing to detect when you’re home–and set the temperature accordingly. They give you the option of controlling the temperature remotely from a connected phone or a voice control app like Alexa or Siri. And they use built-in analytics to measure and improve your energy efficiency and detect and alert you to maintenance issues.

In short: the smarter your smart thermostat, the less effort you need to make and the more money you save.

From big names like Google Nest and Honeywell Home to the lesser-known brands, there are lots of contenders for best thermostat 2020. Read on for our list of the top 10 smart thermostat options currently on the market.

1. Google Nest Learning Thermostat (3rd Gen) – Best Smart Thermostat Overall

The Nest Learning Thermostat is a powerful, feature-rich, energy-saving device that really puts the ‘smart’ in ‘smart thermostat’. As its name suggests, this is a self-learning thermostat that learns what temperature you like at different times of the day and builds a schedule around yours. It monitors your HVAC 24/7, alerting you when something isn’t right. When you purchase this thermostat, you get the option of adding on the Nest Temperature Sensor for $39 to set different temperatures at different times of day in up to 20 different zones. If you’re the sort of person who uses Google for everything, then this is the best Nest Thermostat on the market.

  • Smart home integrations: Google Assistant, Amazon Alexa
  • Energy savings: 10-12% on heating and 15% on cooling bills
  • Colors: Stainless steel, white, black, copper, polished steel, brass, or mirror black

2. Ecobee SmartThermostat – Best Smart Thermostat for Alexa

This smart thermostat from Ecobee is the only one on the market with Alexa built-in, enabling you to use your voice to turn down the heat, make calls, or listen to Spotify without having to purchase Alexa separately. The two other main features are SmartSensor and eco+ Schedule, which work in tandem to manage hot and cold spots and sync your thermostat’s schedule with your routine. Each month, Ecobee sends you a monthly energy savings report at no extra cost.

  • Smart home integrations: Amazon Alexa (built-in), Google Assistant, Apple HomeKit, Samsung SmartThings, IFTTT
  • Energy savings: Up to 23% on heating and cooling bills
  • Colors: Black front, white sides and back

3. Honeywell Home T9 – Best Smart Room Sensors

Honeywell Home is the other member of the big-three smart thermostat brands, and the T9 is its flagship product. The T9’s biggest selling point is its Smart Room Sensors, which let you control different rooms based on occupancy or a specific schedule you choose. Like other premium smart thermostats, the T9 also includes remote temperature control (through an iOS/Android mobile app) and round-the-clock monitoring and maintenance alerts.

  • Smart home integrations: Amazon Alexa, Google Assistant, IFTTT, Cortana
  • Energy savings: Not stated, but it includes rebates for using less energy (through Honeywell subsidiary Resideo)
  • Colors: White

4. Google Nest Thermostat – Best-Value Smart Thermostat

 The Nest Thermostat was released in October 2020, replacing the Nest Thermostat E as Google’s entry-level smart thermostat. The Nest Thermostat has many of the same features as the Nest Learning Thermostat, with the exception that it doesn’t learn your preferences, doesn’t work with some complex HVAC systems and isn’t compatible with the Nest Temperature Sensor. Setup is through the Google Home app and is incredibly straightforward.

  • Smart home integrations: Google Assistant, Amazon Alexa
  • Energy savings: 10-12% on heating and 15% on cooling bills
  • Colors: Snow, sand, fog, or charcoal

5. LUX Kono Smart - Best Smart Thermostat on a Budget

While it doesn’t have the learning capabilities of the higher-end thermostat options, the Lux Kono Smart is an extremely functional smart thermostat at a reasonable price. It includes Home & Away Aware, a geofencing feature on the LUX app that automatically adjusts temperature to your selected preference when leaving or entering a room. It also includes built-in smart scheduling, energy and run-time reporting, and smart tips delivered straight to your LUX mobile app. 

  • Smart home integrations: Amazon Alexa, Google Assistant, Apple HomeKit, IFTTT
  • Energy rebates: Not stated, but includes rebates for around $75-$125 (varies by zip code)
  • Colors: Black stainless steel with choice of nine changeable covers (midnight black, deep blue, hibiscus red, sea green, true white, paint it, champagne gold, sea mist grey, or sky blue)

6. Honeywell Lyric T5 – Next-Best Smart Thermostat on a Budget

Honeywell has thermostats to suit different price ranges, with the T5 being its budget option. This is a highly functional thermostat, with geofencing to keep track of your location, intelligent comfort control to determine if your home needs heating or cooling, and smart maintenance reminders. It also happens to be compatible with just about every type of smart home ecosystem.

  • Smart home integrations: Amazon Alexa, Apple HomeKit, Google Assistant, IFTTT, Cortana, and other ecosystems
  • Energy savings: Not stated
  • Colors: Black display with grey border

7. Ecobee3 Lite – Another Solid Smart Thermostat on a Budget

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