Smart Thermostats Review
Honeywell Home T9 WiFi Smart Thermostat Review (2026)
A sensor-focused thermostat that tracks rooms you actually use, with a bright touchscreen and broad platform support.
Our verdict: Worth a low-risk try
★★★★★
$170-$200 · Amazon return policy applies
Check Today's Price →At a glance
| Category | Smart Thermostats |
|---|---|
| Our rating | ★★★★★ 4.3/5 |
| Price | $170-$200 |
| Availability | Check current price on Amazon |
| Returns | Standard Amazon return policy applies |
| Best for | Larger or multi-story homes that need room-by-room balancing across many sensors. |
Our take
The Honeywell Home T9 stands out for its Smart Room Sensors, which detect both temperature and motion across up to 20 sensors, letting the thermostat prioritize the rooms you're actually occupying rather than just the hallway where the thermostat lives. It includes one sensor in the box, has a large color touchscreen, geofencing, and works with Alexa, Google Assistant, and Apple Home through the Resideo app. It's a strong pick for larger or multi-story homes with uneven temperatures. Note that the T9 is an established model now sold mainly through third-party Amazon sellers rather than Honeywell directly, so stock and pricing fluctuate, and the Resideo app experience is functional rather than flashy.
What we like
- Smart Room Sensors track temperature and occupancy in up to 20 rooms
- Includes one sensor and supports Alexa, Google, and Apple Home
- Large color touchscreen with geofencing and flexible scheduling
- Excellent for multi-story homes with hot and cold spots
What to keep in mind
- Now sold mostly via third-party sellers, so price and stock vary ($170-$200)
- Resideo app is dated and less polished than Nest or ecobee
Buy through Amazon and you're covered by their standard return policy. Check the live listing for today's price and real buyer reviews before you commit.
Sold on Amazon · Standard returns apply · Live price & reviews on the listing
Ready to look at Honeywell Home T9 WiFi Smart Thermostat? Check current pricing, availability, and customer reviews on Amazon.
Check Today's Price →As an Amazon Associate, Home Energy Lab earns from qualifying purchases. Home Energy Lab is reader-supported. Some links on this site are affiliate links — we may earn a commission if you buy through them, at no extra cost to you. We only feature gear we'd recommend to a friend, and our opinions are our own.
Frequently asked questions
Is Honeywell Home T9 WiFi Smart Thermostat worth it?
The Honeywell Home T9 stands out for its Smart Room Sensors, which detect both temperature and motion across up to 20 sensors, letting the thermostat prioritize the rooms you're actually occupying rather than just the hallway where the thermostat lives. It includes one sensor in We weigh real-world usefulness against price, and we note the downsides honestly. Check the live price and recent customer reviews on Amazon before deciding — both can change.
Where can I buy Honeywell Home T9 WiFi Smart Thermostat?
Through Amazon, where the standard Amazon return policy applies. We link to the current listing so you always see up-to-date pricing and availability.
Who is Honeywell Home T9 WiFi Smart Thermostat best for?
Larger or multi-story homes that need room-by-room balancing across many sensors.
Is Honeywell Home T9 WiFi Smart Thermostat the best in its category?
It's one we think is worth considering, but "best" depends on your needs and budget — compare it against the alternatives in our reviews before you buy.