Nest Learning Thermostat (4th Gen): what it does and who it suits
Google's fourth-generation Learning Thermostat is the first Nest that Apple Home households can use properly, thanks to Matter. It also comes with a room sensor, which fixes the oldest complaint about thermostats.
By Quiet SwitchUpdated November 1, 2026No sponsored placementSpecs from maker documentation and the live listing
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The Nest Learning Thermostat (4th Gen) is worth buying for most homes with a compatible 24 V system, because it builds and adjusts a schedule on its own, ships with a room sensor and works with every major platform through Matter. Skip it if you want air quality monitoring or have line-voltage heat.
How this review was madeQuiet Switch does not own this device. This is a research review built from the maker's specifications and the product's Amazon listing, checked on October 29, 2026. Nothing here is written as though it had been tested in this house.
Best Thermostat
Nest Learning Thermostat (4th Gen)
Matter
A home with a regular-ish routine and a heating bill worth attacking.
AlexaYes
GoogleYes
AppleYes
SmartThingsNo
Display
Large round LCD
Learning
Auto-schedule
Sensors
1 remote sensor in the box
Protocol
Matter certified
Matter certification is new for this generation, which is what finally lets an Apple Home household buy a Nest.
Remote temperature sensors fix the single biggest complaint about every thermostat: the hallway is not the bedroom.
It builds a schedule by watching, which matters because almost nobody ever programs a thermostat by hand.
Skip this ifIt runs most 24 V systems, usually without a C-wire, but not line-voltage baseboard heat. Run Google's compatibility checker before ordering.
Learns, then asks. It suggests schedule changes and asks permission in the Google Home app before making them.
Room sensor included. A Nest Temperature Sensor (2nd gen) is in the box, and the thermostat works with any Nest Temperature Sensor, so a bedroom can be the reading that counts at night.
Weather-aware. Google describes features that pause the system when outside conditions will warm or cool the house naturally, and an eco mode that uses outside temperature while you are away.
Bigger screen. Google says the display is 60 percent larger than before, with a far-sight mode readable across the room.
Every platform. Matter compatible, with voice control through Alexa, Siri or Google Assistant speakers.
Wiring and compatibility
Google says it works with most 24 V systems, including gas, electric, oil, forced air, heat pump and radiant, and that most homes do not need a C-wire. Line-voltage electric baseboard heat is a different kind of system and is not a match. Run Google's compatibility checker with a photo of your current wiring before ordering.
Who should buy something else
Choose the ecobee Premium if you want air quality alerts or a speaker on the wall, and Alexa built in. Choose Amazon's own thermostat for a rental where simple scheduling is enough. Google's savings claims carry legal conditions on its listing; the dependable saving comes from having a schedule at all.
FAQ
Questions people ask
Does the Nest Learning Thermostat 4 work with Apple Home?
Yes, through Matter. Amazon's listing also names Apple HomeKit among supported controllers.
Does the Nest 4th Gen need a C-wire?
Google says most homes do not need one. Its compatibility checker confirms for your system.
Can I add more room sensors?
Yes. It works with any Nest Temperature Sensor, so more rooms can be added after the one in the box.
Quiet SwitchOne person, no sponsors, no devices owned. Specs come from maker documentation and the live listing; nothing here is written as though it had been tested in this house. How this site works →
