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Smart thermostats comparisons

Thermostats filtered through a local-first lens instead of voice-assistant marketing.

Read the buying guide → All smart thermostats →

Standout picks

Strongest overall pick

SONOFF TRVZB Zigbee Thermostatic Radiator Valve

SONOFF · HA: excellent · local: excellent

Excellent local control via ZHA or Zigbee2MQTT with no cloud dependency

Product notes →

Also strong on local control

Aqara Smart Radiator Thermostat E1 (SRTS-A01)

Aqara · works offline: yes

On Zigbee2MQTT or ZHA it pairs straight to your own coordinator with no Aqara hub or cloud. An Aqara hub is only needed for the Aqara app, HomeKit or Matter bridging.

Why it stands out →

Easiest starting point

Google Nest Thermostat

Google · setup: easy

Google Home households wanting a well-designed thermostat with smart scheduling

See buyer notes →

All smart thermostats, side by side

Filter, sort, and open "More" on any row for what it's best at, setup, power, and cloud posture. Prices are the last verified read where there is one; the rest show a price band.

Showing 13 of 13 Ordered by Home Assistant fit, then local control. Click a column heading to re-sort.

Smart thermostats compared: Home Assistant fit, offline behavior, protocols, hub requirement, price, and where to buy.
						Where to buy
SONOFF TRVZB Zigbee Thermostatic Radiator Valve SONOFF More Best for Local-first households with hydronic radiators wanting cheap per-room heating control Standout A budget Zigbee radiator valve that pairs to any Zigbee 3.0 coordinator, exposing direct valve-position control plus an external-temperature input. Local control excellent Cloud local-first (none) Setup moderate Power battery	excellent	yes	Zigbee	yes	budget	SONOFF ↗
Aqara Smart Radiator Thermostat E1 (SRTS-A01) Aqara More Best for Zigbee2MQTT users wanting a full-featured local radiator valve Standout A Zigbee radiator valve exposing a full climate set on Zigbee2MQTT - schedules, window detection, frost protection, external temperature - with no Aqara hub. Local control excellent Cloud local-first (none) Setup moderate Power battery	good	yes	Zigbee	yes	mid	Aqara ↗
Eve Thermo Eve More Best for European households with radiator heating who want local-first smart TRVs Standout Privacy-first smart radiator valve with Thread and Matter for fully local heating control. Local control excellent Cloud local-first (none) Setup moderate Power battery	good	yes	Matter, Thread	yes	premium	Eve ↗
Honeywell Home T6 Pro Z-Wave Honeywell More Best for Home Assistant users wanting a fully local thermostat on Z-Wave Standout One of the few thermostats with Z-Wave for fully local control - no cloud needed, ever. Local control excellent Cloud local-first (none) Setup moderate Power battery	good	yes	Z-Wave	yes	$133.97checked Sep 8	Amazon ↗ *
Sinope TH1123ZB Zigbee Thermostat (3000W) Sinope More Best for North American homes with electric baseboard/convector heat wanting local Zigbee control Standout A rare North American 240V line-voltage Zigbee thermostat for electric baseboard and convector heating that pairs locally to ZHA or Zigbee2MQTT - no Sinope hub. Local control good Cloud local-first (none) Setup hard Power AC-powered	good	yes	Zigbee	yes	mid	Sinope ↗
Aqara Thermostat Hub W200 Aqara More Best for low-voltage central HVAC owners who also want a Thread border router in the same box Standout A Matter thermostat that doubles as a Thread border router and an Aqara Zigbee bridge. Local control good Cloud cloud-tinged (low) Setup moderate Power hardwired	good	yes	Wi-Fi, Thread, Matter, Zigbee	no	$159.99checked Sep 21	Amazon ↗ *
Mysa Smart Thermostat for Central HVAC Mysa More Best for central forced-air, heat pump or central AC systems where you want local Matter control Standout The only Matter-certified thermostat Mysa makes - it joins Home Assistant locally over Matter instead of through the Mysa cloud. Local control good Cloud cloud-tinged (low) Setup moderate Power hardwired	good	yes	Wi-Fi, Matter	no	premium	Mysa ↗
Mysa Smart Thermostat for Electric Baseboard Mysa More Best for homeowners with electric baseboard heaters who want smart control Standout Purpose-built for electric baseboard heaters - fills a niche that almost no other smart thermostat addresses. Local control good Cloud cloud-tinged (low) Setup moderate Power hardwired	good	yes	Wi-Fi	no	premium	Amazon ↗ *
tado Smart Thermostat X tado More Best for European households wanting a modern, multi-protocol thermostat Standout Thread and Matter-ready thermostat with strong European heating system support and geofencing. Local control fair Cloud local-first (none) Setup moderate Power hardwired	good	yes	Matter, Thread	no	mid	Tado ↗
ecobee Premium ecobee More Best for Alexa households wanting an all-in-one thermostat with voice control Standout Built-in air quality sensor and Alexa speaker in a premium thermostat. Local control fair Cloud cloud-tinged (medium) Setup moderate Power hardwired	fair	yes	Wi-Fi	no	$259.99checked Sep 21	Amazon ↗ *
Google Nest Thermostat Google More Best for Google Home households wanting a well-designed thermostat with smart scheduling Standout Matter-ready Google thermostat with smart scheduling via Nest suggestions (no auto-learning) and a refined minimal design. Local control poor Cloud cloud-heavy (high) Setup easy Power hardwired	okay	yes	Wi-Fi, Matter	no	$99.99checked Sep 7	Amazon ↗ *
Sensibo Air Pro Sensibo More Best for mini-split or window AC owners who want smart climate control Standout IR blaster that adds smart control to virtually any mini-split or window AC, with built-in air quality monitoring. Local control poor Cloud cloud-heavy (high) Setup easy Power mains	okay	no	Wi-Fi	no	$159checked Sep 10	Amazon ↗ *
Honeywell Home T9 Honeywell Discontinued More Best for multi-room households wanting zone-aware heating and cooling Standout Wireless remote room sensors let you prioritize comfort in the rooms that matter most. Local control poor Cloud cloud-heavy (high) Setup easy Power hardwired	okay	yes	Wi-Fi	no	$194.99checked Sep 7	Amazon ↗ *