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Neither thermostat is a universal winner. Choose the Google Nest Learning Thermostat (4th gen) if you want closer Google Home and Matter integration or prefer its Smart Schedule features. Choose the ecobee Smart Thermostat Premium if Apple HomeKit, built-in Alexa, or its included Power Extender Kit matters more. Before buying either one, check its compatibility with your exact HVAC equipment and wiring.
How Nest and ecobee compare
This comparison is between the Google Nest Learning Thermostat (4th gen) and the ecobee Smart Thermostat Premium. Other models from either brand have different features and compatibility, so don’t assume the details below apply to every Nest or ecobee thermostat.
| What to compare | Nest Learning Thermostat (4th gen) | ecobee Smart Thermostat Premium |
|---|---|---|
| HVAC support | Google lists many 24V systems, with support for multiple heating and cooling stages and certain accessory wiring. See Google’s specifications and compatibility guidance. | ecobee lists many 24VAC systems, including furnaces, heat pumps, boilers, and PTAC or fan-coil units; it supports one accessory device. See ecobee’s compatibility details. |
| Power and wiring | Most homes do not need a C wire, but some systems require one or a Nest Power Connector. | Uses C and Rc power connections. The included Power Extender Kit can support installation in many homes without a fifth wire. |
| Included room sensor | One Nest Temperature Sensor (2nd gen). | One SmartSensor. |
| Smart-home platforms | Google Home setup and control; Matter support. | Apple HomeKit, Amazon Alexa, Google Assistant, and Samsung SmartThings. Siri use requires a compatible Apple home hub. |
| Other notable features | Smart Schedule and Adaptive Eco features. | Built-in Alexa and security-hub features; some monitoring and alarm functions require an ecobee Smart Security subscription. |
Feature and compatibility descriptions come from the manufacturers. They do not determine whether a particular home’s equipment will work: use the relevant model-specific checker and verify the wiring at the thermostat.
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Check HVAC compatibility before choosing
Compatibility is the first practical decision, not an afterthought. A thermostat can support a general equipment category while still being unsuitable for a particular system’s terminals, stages, or accessories.
#1 Best Overall
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Control the temperature with your voice using smart home devices that work with Google Assistant or Alexa[3]Nest Renew makes it simple to support clean energy right from home; it works with your Nest Thermostat[5] to help you automatically prioritize your usage[6] to times when energy is cleaner or less expensive.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory. You can control your Nest Thermostat manually when there's no internet connection.
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home
- Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]. | Control the temperature with your voice using smart home devices that work with Google Assistant or Alexa[3].
Nest equipment support
Google says the 4th-gen Learning Thermostat works with most 24V systems, including gas, electric, oil, forced-air, heat-pump, and radiant systems. Its specifications cover up to three heating and cooling stages, up to three heat-pump stages with auxiliary or alternate and emergency heat, fan control, and supported humidifier, dehumidifier, and ventilation wiring. Google notes that some terminal combinations are limited; check your equipment using the Nest compatibility information.
ecobee equipment support
ecobee lists compatibility with most 24VAC systems, including conventional furnaces and air conditioners, heat pumps with auxiliary heat, boilers, and PTAC or fan-coil units with up to three fan speeds. Premium supports one 1-wire or 2-wire accessory, such as a humidifier, dehumidifier, or ventilator. Confirm your setup with ecobee’s compatibility checker.
Rank #2
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Requirements : Compatible HVAC system, Wi-Fi internet connection, Phone or tablet (iOS or Android), Google Home app.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home
- Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
Before starting either checker, identify your HVAC equipment and note the wires connected to your current thermostat. Also check whether you have accessories such as a humidifier or ventilator and whether the system uses multiple heating or cooling stages. Manufacturer-wide compatibility estimates cannot confirm an individual installation.
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Do you need a C wire?
Not necessarily with either model, but the answer depends on your system. Google says most homes do not need a C wire for the 4th-gen Nest Learning Thermostat; some installations do need a C wire or Nest Power Connector. ecobee specifies C/Rc power and includes a Power Extender Kit, which enables installation in many homes without a fifth wire.
Rank #3
- Save up to 23% every year on heating and cooling costs, adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Compared to a hold of 72
- Compatible with 85% of systems, check your system’s compatibility with our online ecobee Compatibility Checker on the ecobee support page
- Change your temperature by easily tapping the color touchscreen or using the ecobee app. Plus, free software upgrades ensure you get the best out of your Smart Thermostat Essential, for years to come
- Automatically adjusts to your set schedule to save energy when you’re gone and optimize comfort when you’re home. Keep track of your energy consumption when you're on the go on the ecobee app
- Easy DIY install. No C Wire, no problem. Get the ecobee Power Extender Kit (PEK) for homes without a C-Wire and keep your walls looking nice with our trim kit – both sold separately
These are different approaches, not a guarantee that either thermostat will work with any wiring arrangement. Use the manufacturer’s compatibility guidance and check the actual wiring and equipment behavior before purchase.
Choose based on your smart-home setup
Pick Nest for a Google-centered home
Nest requires the Google Home app for installation and setup, and the 4th-gen model supports Google Home and Matter. It is the more natural fit if you already use Google Home or want the thermostat to join a Matter-compatible setup. Google also describes Smart Schedule and Adaptive Eco features for this model.
Rank #4
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Connectivity : Wi-Fi - 802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz Wi-Fi., Wireless interconnect : Bluetooth Low Energy Please refer to the product description section below for all applicable legal disclaimers.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home. Lock feature: No
- Programmable thermostat that lets you create an energy efficient schedule in the Google Home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
Pick ecobee for broader platform options or built-in Alexa
ecobee lists support for Apple HomeKit, Amazon Alexa, Google Assistant, and Samsung SmartThings. The Premium model also has Alexa built in. To use Siri with the thermostat, you need a compatible Apple home hub, such as a HomePod or HomePod mini. Some of ecobee’s security and alarm functions require an ecobee Smart Security subscription.
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Both premium models include one room sensor: Nest includes a Nest Temperature Sensor (2nd gen), while ecobee includes a SmartSensor. That gives each thermostat a way to account for a room beyond the thermostat’s own location, but one sensor may not cover every room where you want temperature input.
Best Value
- ENERGY STAR certified smart thermostat for home that helps you save energy and stay comfortable.Product note: You can also check your system’s compatibility before purchasing a Nest thermostat with our online Nest Compatibility Checker on the Google Nest support page.Connectivity Protocol : Wi-Fi.Connectivity Protocol : Wi-Fi
- The Nest Thermostat is designed to work without a C wire in most homes, but for some systems, including heating only, cooling only, zone controlled, and heat pump systems, you’ll need a C wire or other compatible power accessory. Lock feature: No
- Nest Thermostat turns itself down when you leave, so you don’t waste energy heating or cooling an empty home; easily program an energy efficient schedule in the Google home app on your Android or iPhone
- Remote control lets family members change the thermostat temperature from anywhere on a phone, laptop, or tablet[1]
- Savings Finder looks for more ways your thermostat can help you save, and suggests tweaks to your schedule in the app; check with your energy provider to learn more about rebates and more ways to save on a Nest thermostat
If room-by-room comfort is important, consider which rooms you want to monitor and whether the included sensor is enough. Check the cost and compatibility of any additional sensors before deciding; don’t assume the thermostat’s reading represents conditions throughout the home.
Do either of them prove better at saving energy?
No published figure in the available manufacturer materials establishes that one of these thermostats saves more energy than the other in a controlled, current head-to-head comparison. Savings depend on the home, climate, energy rates, HVAC system, occupancy, and the temperature schedule you choose.
ecobee advertises up to 26% annual heating and cooling savings compared with holding a home at 72°F (22°C). The company says that estimate is based on an internal analysis conducted in April 2021 and that actual annual savings vary by energy use and location. It is a manufacturer claim with a fixed-temperature baseline, not an independently verified result or evidence that ecobee beats Nest.
A separate 2020 study by ecobee authors Kevin Trinh and Tamara Dzubay reported results from an eco+ feature-suite experiment involving more than 200,000 ecobee users in the United States and Canada. It compared those results with existing ecobee devices without that feature suite, not with Nest thermostats, and does not establish savings attributable specifically to owning the Smart Thermostat Premium. Read the 2020 study.
Which thermostat should you buy?
- Choose Nest Learning Thermostat (4th gen) if Google Home or Matter integration and Nest’s scheduling features are your priorities, and Google’s checker confirms compatibility.
- Choose ecobee Smart Thermostat Premium if you want Apple HomeKit, built-in Alexa, its included SmartSensor, or its included Power Extender Kit, and ecobee’s checker confirms compatibility.
- Decide by fit, not a savings headline if energy costs are your main concern: the published claims use different baselines and do not provide a direct Nest-versus-ecobee result.
In either case, confirm the exact HVAC model, wiring, and accessory connections before ordering. Recheck current pricing, rebates, and installation costs at the time of purchase because offers and local incentives can change.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
