Nest vs ecobee: What's the better smart thermostat?

In the past few years, smart thermostats have gone from a niche product to one that’s accessible to most homeowners. If you don’t have them installed in your home already, you’ve probably seen the small screens on walls at a friend’s house or on display at a local electronics store.

While many companies are starting to produce their own smart thermostat technology, the two most popular products were among the first to hit the market. The Nest, backed by Google, turned 10 years old in 2021. Their main competitor, the ecobee, first hit the market 12 years ago.

If you’re considering installing a smart thermostat, you need to understand the major differences between these two leading brands. The third generation Nest and the ecobee4 are priced similarly, between $115 and $250 on Amazon, so understanding the devices’ unique features can help you choose.

Both the Nest and ecobee4 include the main functions of a smart thermostat. You can use them to change the temperature throughout your home, and because they’re “smart,” you can communicate with them through your smartphone (as well as some compatible smart speakers).

The Nest and the ecobee also offer geofencing. Geofencing technology sets up virtual perimeters around your home. When the technology is enabled, these smart thermostats know whether you (or, more accurately, your phone) are either inside or outside the perimeter. As a result, smart thermostats with geofencing can detect when you’ve left your home and adjust the temperature accordingly, allowing you to save money. Similarly, they will know when you’re about to return, and can program the home back to your preferred temperature.  

Room temperature sensors, a feature unique to the ecobee, are also now available for the Nest. Adding additional sensors throughout your home means the thermostat system no longer relies solely on the temperature reading where the main thermostat is located. It’s often the case that the thermostat itself is located in a hallway or kitchen. That location may have a temperature much different than a basement or bedroom. Now, with both the Nest and the ecobee, you can add sensors to those areas, so your thermostat will have a much better understanding of the true temperature throughout your home.

Finally, both the Nest and the ecobee4 earned the Department of Energy’s ENERGY STAR label. According to the DOE, “smart thermostats that earn the ENERGY STAR label have been independently certified, based on actual field data, to deliver energy savings.”

If 71 degrees is your preferred temperature for your morning coffee, after you’ve adjusted a few times, the Nest will do it for you.

Learning

Nest calls its flagship thermostat a “learning” thermostat. It can learn from your preferences and automatically adjust your home’s temperature to your liking. After a few days or weeks of observing your habits and preferences, the Nest gathers enough information to understand when it should make automatic adjustments for you.

For example, if you like the temperature a few degrees lower while you sleep and you lower the temperature down to 65 degrees around the same time every night, eventually, the Nest will understand this habit and adjust for you.

Seasonal savings

In some locations, Nest offers an opt-in service that will adjust the temperature for you to help you save money. If you qualify for and opt into the program, the Nest will use both your preferences and data from your utility to make temperature adjustments, which can reduce your electric bill even further.

Aesthetics

The Nest has a clean, simple interface and comes in four styles: copper, stainless steel, black, and white.

Integration

Google, and its holding company, Alphabet, have owned Nest since 2014, but until February 2018, it was considered an Alphabet subsidiary and not fully integrated with Google’s other smart home products. Google is now developing it as part of its division that handles other devices like the Chromecast, Pixel, and the Google Home.

Google’s blog post about the move says it “combine[s] hardware, software, and services.” In the future, developing these devices together could allow Google’s suite of products to become smarter and add more features.

ecobee room sensors can help your thermostat detect temperature changes throughout your whole house.

Room sensors

Though Nest recently added room sensors, their version lacks some of the functionality of ecobee’s. Both allow you to extend the temperature readings of your thermostat, but the ecobee’s room sensors also sense which rooms are occupied. Understanding which rooms are occupied helps the device prioritize and contributes to its geofencing readings.

Let’s say you and your family are in the basement, which tends to run colder than the rest of the house. If you’ve put a room sensor in the basement, the ecobee will know that’s the room to prioritize. It can ensure you’re comfortable there, and while you and your family are in the basement, it will care a bit less about other rooms in the house.  

Another example is at night. You probably spend most of the night in your bedroom, which might run a little warmer than other areas of the home. With ecobee’s room sensor, the bedroom temperature gets priority instead of the kitchen or a hallway.

The ecobee can account for up to 32 room sensors, which you can control from the main thermostat or on your phone through an app. (The ecobee4 comes with one sensor, but additional sensors must be purchased separately.)

Intelligent scheduling

While the ecobee4 won’t learn your temperature preferences on its own, it can store that information and adjust the temperature accordingly. Through its scheduling features, you can set your preferred temperatures for when you are home, asleep, or away. You can also input your calendar so that it knows when to make adjustments.

Built-in Alexa voice service

The ecobee’s newest model also has Alexa voice service integration. A smart device with Alexa voice service integration means that the ecobee4 can act as a physical Alexa-enabled smart speaker and receiver itself.

Through its Amazon connection, the ecobee4 has more integration possibilities than the Nest, but not all Alexa “skills” are compatible. You can change the temperature with your voice, play music, and create lists, but most third party skills will not be available.

Amazon’s venture capital wing, the Alexa Fund, is an ecobee investor, so it would be fair to expect their integration to continue to deepen. If you feel committed to Amazon and Alexa products, ecobee could be a good choice.

Google and Amazon compete head-to-head in many areas, and the smart thermostat category is no different. While Google has owned Nest for a few years, it recently fully integrated the thermostat with its other smart home products, meaning the products will learn from each other and continue to be developed together. The ecobee4 is backed by Amazon’s venture capital wing and is itself an Alexa-enable smart speaker.

Choose the Nest for style & intelligence

If you’re a Google loyalist or if you care more about having a thermostat that develops a deep learning of your preferences over time, the Nest might be the best choice. The Learning Thermostat will take a few days to understand your habits but will then start adjusting the temperature for you. If aesthetics are important, the Nest has a slightly cleaner design in four styles: copper, stainless steel, black, and white. In short, the Nest provides style and intelligence.

Choose the ecobee4 for maximum control & integration

If you put your faith in Amazon and its affiliated products or care most about maintaining an efficient and balanced temperature, the ecobee4 may be right for you. The ecobee4 isn’t just a thermostat for one room or hallway – it allows you to control the temperature in each room of your home individually. That can mean a more balanced or efficient home, depending on your choice. In short, the ecobee4 provides maximum control and integration.

Compare and shop for smart thermostats with the EnergySage Smart Thermostats Buyer’s Guide.