Smart Thermostats Review
Honeywell Home T9 WiFi Smart Thermostat Review (2026)
Sensor-focused thermostat that tracks comfort room by room.
Our verdict: Worth a low-risk try
★★★★★
$160-210 · Amazon return policy applies
Check Today's Price →At a glance
| Category | Smart Thermostats |
|---|---|
| Our rating | ★★★★★ 4.2/5 |
| Price | $160-210 |
| Availability | Check current price on Amazon |
| Returns | Standard Amazon return policy applies |
| Best for | Larger or multi-room homes with uneven heating and cooling. |
Our take
The T9 stands out for its room sensors that detect motion and prioritize occupied rooms, balancing temperature across a multi-room home. It supports Alexa, Google, and HomeKit, but the Resideo app can be clunky and some users report occasional WiFi connectivity hiccups.
What we like
- Smart Room Sensors track and prioritize occupied rooms
- Works with Alexa, Google Assistant, and Apple HomeKit
- Sensors have a long wireless range
- Touchscreen display is responsive
What to keep in mind
- Resideo app feels dated and occasionally buggy
- Reports of intermittent WiFi disconnects
- Geofencing is less reliable than competitors
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, Smart Home Magazine earns from qualifying purchases. Smart Home Magazine 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 T9 stands out for its room sensors that detect motion and prioritize occupied rooms, balancing temperature across a multi-room home. It supports Alexa, Google, and HomeKit, but the Resideo app can be clunky and some users report occasional WiFi connectivity hiccups. 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-room homes with uneven heating and cooling.
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.