Data from Amazon and official Honeywell Home site.
2026 verdict
In this 2026 Honeywell Home T9 Smart Thermostat vs Honeywell Home T5 Smart Thermostat comparison, Honeywell Home T9 Smart Thermostat comes out ahead thanks to included accessories, integrations, and sensors. It separates itself most clearly on included accessories, integrations, and sensors, while still looking better on speaker. Pick Honeywell Home T5 Smart Thermostat only when price is the deciding factor for your setup. That is enough to make Honeywell Home T9 Smart Thermostat the better pick for most buyers.
| Feature | Honeywell Home T5 Smart Thermostat | Honeywell Home T9 Smart Thermostat | Winner |
|---|---|---|---|
| Price | $84.00 | $204.90 | Honeywell Home T5 Smart Thermostat |
| Included accessories | None | Temperature Sensor | Honeywell Home T9 Smart Thermostat |
| Integrations | Google Home, Alexa, Apple HomeKit | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, External Temperature Sensors | Honeywell Home T9 Smart Thermostat |
| Sensors | Temperature | Proximity / Motion, Occupancy, Temperature, Humidity | Honeywell Home T9 Smart Thermostat |
| Speaker | NO | YES | Honeywell Home T9 Smart Thermostat |
| Rating | 4.3 | 4.3 | Tie |
| Warranty | 2 years | 2 years | Tie |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Screen | YES | YES | Tie |
| Alerts | Temperature Alerts | Temperature Alerts | Tie |
| Energy Savings | YES | YES | Tie |
| System Health Monitor | YES | YES | Tie |
24% OFF
$84.00
$109.99
- + Price: $84.00
- - Included accessories: None vs Temperature Sensor
- - Integrations: Google Home, Alexa, Apple HomeKit vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, External Temperature Sensors
Winner
$204.90
- + Included accessories: Temperature Sensor
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, External Temperature Sensors
- + Sensors: Proximity / Motion, Occupancy, Temperature, Humidity
- - Price: $204.90 vs $84.00
Frequently Asked Questions
Which is better overall: Honeywell Home T5 Smart Thermostat or Honeywell Home T9 Smart Thermostat?
Honeywell Home T9 Smart Thermostat has the stronger overall profile in this comparison, especially for included accessories, integrations, and sensors.
What is the biggest difference between Honeywell Home T5 Smart Thermostat and Honeywell Home T9 Smart Thermostat?
Price is one of the clearest differences: Honeywell Home T5 Smart Thermostat lists $84.00, while Honeywell Home T9 Smart Thermostat lists $204.90.
Which one looks better on price?
Honeywell Home T5 Smart Thermostat is listed at $84.00, while Honeywell Home T9 Smart Thermostat is listed at $204.90. Honeywell Home T5 Smart Thermostat (better spec).
Who should buy Honeywell Home T5 Smart Thermostat?
Choose Honeywell Home T5 Smart Thermostat if your priority is price and that matters more than included accessories.
Who should buy Honeywell Home T9 Smart Thermostat?
Choose Honeywell Home T9 Smart Thermostat if your priority is included accessories and integrations and that matters more than price.
SensiTouch smart thermostat
$149.99
SensiSmart thermostat
32% OFF$129.99$87.99
EcobeeSmart Thermostat Enhanced
6% OFF$199.99$188.99
GoogleNest Learning Thermostat
€249.00
GoogleNest Learning Thermostat (4th gen)
11% OFF$279.99$248.60
EcobeeSmart Thermostat Premium
27% OFF$204.97$149.63
Honeywell HomeT9 Smart Thermostat
$204.90- Honeywell Home
T5 Smart Thermostat
24% OFF$109.99$84.00 
SensiTouch 2 smart thermostat
10% OFF$189.00$169.99
GoogleNest Thermostat
11% OFF$129.99$115.49
EcobeeSmart Thermostat Essential
$134.99
AmazonSmart Thermostat
$122.96
SensiLite smart thermostat
$63.00
MerossMTS300 Smart Thermostat
5% OFF$62.99$59.84
AqaraThermostat Hub W200
$159.99