Smart Home & AI

Best Smart Thermostat: Nest vs ecobee vs Hive vs Honeywell & More

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Is your energy bill outrageously high? Are you taking things to the extreme and not turning your air conditioning on when it’s 102°F outside so you can save a few pennies? Smart thermostats allow you to be comfortable in your home and let you conserve energy while you’re away at work. Learn more in our best smart thermostat review.

What Is the Average Residential Monthly Electric Bill?

According to the U.S. Energy Information Administration (EIA), the average monthly home electric bill across the U.S. was $117.65 in 2020. If you purchase a smart thermostat that saves about 20% of your energy, your monthly bill will drop to about $91.22/month. That’s a savings of around $274 a year.

So, it’s easy to do the math and see that using a smart thermostat pays for itself in just one year’s use. I know $274 doesn’t sound like a ton of money, but over the course of a few years, you’ve saved over $1,000.

Why Use A Smart Thermostat?

Did you know that, according to the U.S. Department Of Energy, 44% of your energy bill is from your heating and air conditioning? And most of that energy is wasted because your home is empty half the day. Smart thermostats learn your schedule, so temperatures are adjusted throughout your home during the day to conserve energy when you aren’t home.

Also, many cities across the country offer rebates for installing a smart thermostat that can help offset the initial upfront cost to purchase the equipment, not to mention all the additional money you’ll save in the long run. Check with your local energy or utility company to find out if you qualify.

Did You Know?

“Smart” thermostats as they are most commonly known today, were previously (and to some extent still are) referred to as “WiFi thermostats” because they typically operate over your home’s WiFi connection.

Best Smart Thermostats

Find out which one of these cool temperature-controlling gadgets will work best for your home in our comparison.

Winner: Nest Learning Thermostat Review

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Unlike other smart thermostats, the Nest 3rd generation asks you to turn the temperature up and down as you wish and it does the rest. Nest boasts about its ability to continuously learn about your heating and cooling habits. After a week or two of use, the Nest thermostat will remember your habits and begin to make temperature adjustments automatically. You can also make changes from the Nest app, so if you forget to make a change before you leave home, you can adjust it on the go.



  • Claims to lower your energy bills up to 20%
  • Leaf symbol shows when you are conserving energy
  • Compatible with smart speakers such as Google Home, Amazon Alexa and IFTTT
  • Ability to receive energy usage reports
  • Programs itself based on your behavior
  • Farsight features make the thermostat light up when you enter the room to display the temperature or time
  • Energy Star certified and UL listed
  • Shows fingerprints easily
  • Adjusts despite you putting it on a desired temperature

Price And Tech Specs

  • Price: $179.99
  • 2.8 inch diameter
  • 480×480 pixel display
  • Ring dial available in stainless steel, copper, black or white
  • 2-year warranty

Read our in-depth Nest Thermostat Review

Runner-Up: ecobee Reviewecobee smart thermostat

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The ecobee smart thermostat has a motion sensor to detect when you’re home and know when to keep a room at a certain temperature. You can program your schedule into the thermostat, so you conserve energy when you aren’t home.

The ecobee includes a remote sensor to be placed in another room to help keep the temperature even throughout the house. You can purchase additional remote sensors for $79 for a two-pack.

If you’re wondering which is better ecobee vs nest, they both are comparable in terms of their features. The major difference being the design of the nest to twist to control whereas the ecobee you use the touchscreen slider. The ecobee also comes with a much lower price tag.



  • Reads temperatures in multiple rooms using remote sensors
  • Claims to save an average of 23% on energy bills annually
  • Built-in Amazon Alexa Voice service
  • Compatible with Apple HomeKit, Samsung SmartThings, IFTTT, and more
  • Monitor temperature controls via your smartphone, tablet, or computer
  • Live weather report
  • Energy Star certified
  • You drag the temperature up and down, so changing it by just a degree or two can be challenging
  • Some users complain that the speaker doesn’t detect voices from across the room

Price And Tech Specs

  • Price: $197.99
  • 3.5 inch LCD color touchscreen
  • 320×480 pixel display
  • 3-year warranty

Our Personal Experience

ecobee lite 3 with hand adjusting temperatureAfter using a Nest thermostat for several years, we started to have system integration issues with it. So we switched to the ecobee 3 light. In 2+ years, we haven’t had any problems (and even had our HVAC replaced during that time). With the Nest, it often auto-adjusted the temperature to maximize efficiency. As eco-friendly as that feature is, we prefer the ecobee that allows manual temperature adjustments. With Google Home, we can take advantage of voice control, which also works to turn the unit on and off. My husband likes the large digital display that allows him to see the temperature from across the room. While the design is not as sleek and modern as Nest, this is a fool-proof, simple to install and use smart thermostat. – Sadie C.,

3rd Place: Hive Smart Thermostat

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Hive Thermostat

The Hive Smart Thermostat works like the other smart heating and cooling systems but is compatible with the Hive family of products including smart light bulbs, home alarm system, and more. You can set up to six daily schedules, create actions (such as “when it’s dark outside, make the house 77 degrees), use quick heat or cool mode, use geolocation to automatically adjust when you are away, and more.

The only downside is this is only compatible with other Hive products and requires a smart hub to connect to the network.



  • Works with Google Home and Alexa
  • Automatically adjusts temperature via geofencing
  • Mobile App to change settings from afar
  • Good Amazon ratings and ranks
  • Cannot access on the web
  • Doesn’t auto learn your habits like Nest
  • Must use Hive hub and ecosystem of products
  • No auto sensor for control screen to light up

Price And Tech Specs

  • Price:  $188.00
  • 10.2 x 3.2 x 5.5 inches
  • Touchscreen
  • Manufacturer’s warranty available

Honorable Mention: Honeywell Lyric T5 Review

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Honeywell Lyric T5

The Honeywell Lyric T5 smart thermostat is pleasing to the eye, but unfortunately, many consumers have found lots of frustration with it. Users complain of geofencing issues (more on geofencing below) and major app issues.

The Lyric claims to have unique features like Fine Tune to adjust your home’s humidity level, but the execution isn’t living up to the marketing just yet. Perhaps Honeywell will update the device and software, but for now, we’d recommend another thermostat.



  • Claims $189 average in yearly savings
  • Automatically adjusts temperature via geofencing
  • Compatible with Apple HomeKit and Amazon Alexa
  • Control the thermostat with an Android or iOS smartphone or tablet
  • Fine Tune feature adjusts the humidity levels (there’s a difference between 72 degrees with 10% humidity and 72 degrees with 90% humidity)
  • Affordable price tag
  • Cannot access on the web
  • Poorest reviews (highest number of 1-star reviews of all smart thermostats)

Price And Tech Specs

  • Price:  $125.00
  • 4 x 4 inch glass face
  • Touchscreen
  • 2-year warranty

What Is Geofencing?

Geofencing is a feature that uses GPS from your smartphone to define geographical boundaries. When you’re heading home, and you reach your pre-set geofence (say, 10 miles away), your settings will adjust to what you want them to be once you arrive home. The same occurs when you exit the boundaries (the settings will go to a more energy-efficient mode).

Learn more about Geofencing in this video from Proximi to understand how to use it.

Save Even More With Smart Hubs And Light Bulbs

Why stop at just saving money with your energy bill? Using a smart home hub you can automate other aspects of your home and make sure you’re optimizing energy usage. Another simple way to reduce your energy bill is to use efficient lighting systems using smart light bulbs.

Kimberly Alt

Kimberly is our home security expert and has been writing about security and safety since 2013, covering everything from security systems and home automation to identity theft protection, home warranties, medical alert systems, and more. She has personally tested hundreds of system components and interfaced with dozens of home security companies to find out what’s happening behind the scenes. Her work has appeared in many notable brands, including The New York Times' Wirecutter, Reader's Digest, Forbes, People, Woman's World, and Huffington Post. In 2018, she had her first child, which opened up a whole new avenue of security experience with baby gear. She wanted to purchase the safest items for her family. Kimberly received her Bachelor of Arts in multimedia journalism from Simpson College. Her natural curiosity helps her research as she seeks the truth when learning about, comparing, and personally testing products and services.

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