Smart thermostats / Comparison

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Wi-Fi connected 24 V low-voltage thermostats sold new in the US. Line-voltage thermostats, pro-only equipment interface modules, utility-program packages and measured energy savings are outside this catalogue.

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Documented specifications and exact purchase packages
Compare the details	Nest Thermostat, Snow (Google Store, US)
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US purchase package	Nest Thermostat in Snow, single thermostat sold on the US Google Store; the trim plate and steel plate are sold separately. Product & sources Box list: thermostat display, thermostat base, mounting screws and wire labels, installation guide; the support page also lists AAA backup batteries. Sand, Fog and Charcoal are other colors of the same package. Price, availability and checkout were not verified. Sources · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google: Nest Thermostat Google Store overviewChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Where to buy	Select: Nest Thermostat in Snow, single thermostat sold on the US Google Store; the trim plate and steel plate are sold separately. View at Google Store — Nest Thermostat, Snow (Google Store, US); opens in a new tab The link may open several packages. Check current price and availability with the seller. Opens in a new tab.
Documented HVAC support The manufacturer's published supported-system and stage statement, kept close to its wording. This is a published compatibility list, not an installation guarantee. Use the manufacturer's compatibility checker and your actual wiring before buying.	Works with most 24V heating and cooling systems, including furnaces, air conditioners, boilers, and heat pumps. Conventional systems with one stage of heating and cooling and a second stage of either heating or cooling; HVAC fans. Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Heat pump stages Published heat pump compressor and auxiliary or emergency heat stage support. Heat pump staging differs from conventional staging. Dual-fuel and balance-point behavior must be confirmed separately for your equipment.	Heat pumps with one stage of heating and cooling and either aux or emergency heat. Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Accessory terminal support Documented humidifier, dehumidifier or ventilator accessory control and any terminal limits. One shared accessory terminal is not the same as independent control of several accessories. Some accessories need an isolation relay.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. No humidifier, dehumidifier or ventilator control is documented; the store comparison lists those only for the Learning Thermostat (4th gen). Sources · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google: Nest Thermostat Google Store overviewChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
C-wire requirement The manufacturer's statement about needing a common (C) wire and how the thermostat is powered without one. A design that works without a C wire in most homes can still require one for particular systems. Treat percentages as manufacturer statements.	Designed to work without a C wire; for heating-only, cooling-only, zone-controlled and heat pump systems a C wire or Nest Power Connector may be necessary. Backup power from 2 AAA alkaline batteries. Sources · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google: Nest Thermostat Google Store overviewChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Power adapter or extender in this package Whether the selected US package ships with a C-wire adapter, power extender kit or power connector. An accessory sold separately or promoted free in one channel is not box content. Check the exact package before ordering.	NoNo Nest Power Connector in the box list. Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Remote sensors in this package Count of wireless room or temperature sensors supplied in the selected US package. Zero included does not establish that sensors are unsupported; some thermostats do not support any remote sensor at all.	0 sensorsNone included; the store comparison says this model is not compatible with the Nest Temperature Sensor. Sources · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google: Nest Thermostat Google Store overviewChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google Nest Help: Learn about the Nest Temperature SensorChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Wireless connectivity Documented Wi-Fi bands and other radios in the thermostat. A 2.4 GHz-only radio needs that band enabled on your router. A listed radio does not by itself establish Thread or Matter support.	Wi-Fi 802.11b/g/n 2.4 GHz and 802.11a/n 5 GHz; Bluetooth Low Energy; an 802.15.4 (2.4 GHz) radio is listed in the support specifications. Sources · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google Nest Help: Nest thermostat technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Matter certified Whether the manufacturer documents Matter certification or Matter control. Matter control may still require the maker's app for setup. Matter is not the same as a native Alexa, Google or HomeKit integration.	YesMatter certified; compatible with Matter-certified voice assistants. Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Thread radio documented Whether the manufacturer explicitly documents Thread support. An 802.15.4 or sub-GHz radio listing is not a Thread claim. Unknown means no explicit statement was found.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. An 802.15.4 radio is listed but Thread is not named. Source · 2026-10-21 Google Nest Help: Nest thermostat technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Apple HomeKit or Apple Home named Whether the manufacturer names Apple HomeKit or Apple Home as a supported platform. Matter-only compatibility with Apple Home is not recorded as HomeKit support unless the manufacturer names Apple.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. Google Home, Alexa and Matter-certified assistants are named; Apple is not. Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Display and control Documented screen type, size or resolution and the primary local control method. Screen size does not rank usability. Some thermostats are controlled by a side touch strip or ring rather than a touchscreen.	2.4-inch QVGA IPS LCD, 240 x 320 pixels, with mirrored glass lens; capacitive touch control by swiping on the side. Sources · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google: Nest Thermostat Google Store overviewChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Built-in humidity sensor Whether the thermostat itself documents a humidity sensor. Sensing humidity is separate from controlling a humidifier or dehumidifier, which depends on accessory support and wiring.	Yes Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Built-in air quality monitoring Whether the manufacturer documents an indoor air quality sensor in the thermostat. Air quality monitoring names a feature, not a measured accuracy. The sensed parameters may not be published.	Not verified We have not verified this value. It is not a confirmed no or zero. Check the original source or ask the manufacturer if it affects your choice. The sensor list names motion, temperature, humidity, capacitive touch and ambient light; no air quality sensor is listed. Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Built-in occupancy or motion sensor Whether the thermostat documents a built-in occupancy, motion or radar sensor. Geofencing through a phone and remote sensors are different mechanisms from a sensor in the thermostat.	YesMotion sensor; the support specifications name a passive infrared proximity sensor and a Soli sensor. Sources · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.Google Nest Help: Nest thermostat technical specificationsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
App, account and subscriptions The documented app required for setup and any optional or required subscriptions. Core heating and cooling control normally works without a paid plan; security or filter services are separate subscriptions.	Google Home app, Wi-Fi and an iOS or Android phone or tablet are listed requirements. Voice control requires a compatible device. Source · 2026-10-21 Google: Nest Thermostat tech specsChecked 2026-10-21. We reviewed the official page text on the check date. Checkout options were not verified.
Questions to check before buying	A published compatibility list is a manufacturer statement, not a tested installation guarantee; the manufacturer compatibility checker and the actual wiring decide. The store and support pages describe the motion sensing differently (Motion versus passive infrared plus Soli); both are retained in the note. Energy savings figures on the manufacturer pages are marketing claims and are not recorded as facts.

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