Honeywell Home T9.
Wi-Fi smart thermostat with optional Smart Room Sensors, included C-wire adapter, and the install-ability that Honeywell's resi-HVAC reputation is built on.
The Verdict.
Gavler Meta-Score
“The pick if you want multi-room sensing without the Ecobee/Nest aesthetic, your home doesn't have a C-wire, and you don't live in Apple HomeKit. Quietly excellent product, weakest app of the flagship trio.”
The Gavler Verdict
Where to Buy.
Prices checked regularly
90-day price history
Price History
Steady at $199 for the entire 90-day tracking window — no increases, no discounts, across 58 tracked days.
Tracked daily across retailers. Vote Want itabove and we’ll alert you the moment the price drops.
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Precision Engineering
Smart Room Sensors
Optional sensors track temperature, humidity, and motion in additional rooms — multi-room averaging like Ecobee SmartSensors.
C-Wire Adapter Included
Ships with a C-wire adapter in the box for no-C-wire homes — eliminates the install friction Ecobee's PEK addresses.
Alexa + Google Home (No HomeKit)
Works with Alexa and Google Home; Apple HomeKit is not supported.
Technical Specifications
The Scoreboard
Strongest among Honeywell's smart thermostat lineup. Community ratings drag slightly because of the Resideo app's reputation versus Ecobee/Google.
Cast Your Vote
Do you think Honeywell Home T9 deserves the #4 spot in Best Smart Thermostats?
Global Critique
“The T9 lets you place multi-room sensors throughout your home for whole-home comfort.”
“Configures itself with wire-sensing technology and includes a C-wire adapter, making DIY installation very simple.”
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