Nest Learning Thermostat (4th gen) vs Honeywell Home T9 Smart Thermostat comparison

Updated August 2026

Data from Amazon and official Google and Honeywell Home sites.

2026 verdict

Across the 2026 comparison, Nest Learning Thermostat (4th gen) earns the nod over Honeywell Home T9 Smart Thermostat on the strength of rating, included accessories, and connectivity. It has the clearer edge on rating, included accessories, and connectivity, and it stays ahead on integrations and sensors. Choose Honeywell Home T9 Smart Thermostat only if price, voice control, and speaker matter more to you than the broader advantage from Nest Learning Thermostat (4th gen). That makes Nest Learning Thermostat (4th gen) the clearer recommendation in 2026.

Winner

Google

Nest Learning Thermostat (4th gen)

11% OFF

$248.60

$279.99

Buy on Amazon USA

Honeywell Home

Honeywell Home T9 Smart Thermostat

$204.90

Buy on Amazon USA

Feature	Nest Learning Thermostat (4th gen)	Honeywell Home T9 Smart Thermostat	Winner
Price	$248.60	$204.90	Honeywell Home T9 Smart Thermostat
Rating	4.4	4.3	Nest Learning Thermostat (4th gen)
Included accessories	Trim Plate, Temperature Sensor	Temperature Sensor	Nest Learning Thermostat (4th gen)
Connectivity	2.4 GHz WiFi, 5 GHz WiFi, Bluetooth	2.4 GHz WiFi	Nest Learning Thermostat (4th gen)
Integrations	Google Home, Alexa, Samsung SmartThings, Home Assistant, IFTTT, Matter, External Temperature Sensors	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, External Temperature Sensors	Nest Learning Thermostat (4th gen)
Sensors	Proximity / Motion, Occupancy, Temperature, Humidity, Ambient Light	Proximity / Motion, Occupancy, Temperature, Humidity	Nest Learning Thermostat (4th gen)
Voice Control	NO	YES	Honeywell Home T9 Smart Thermostat
Speaker	NO	YES	Honeywell Home T9 Smart Thermostat
Warranty	2 years	2 years	Tie
Screen	YES	YES	Tie
Alerts	Temperature Alerts	Temperature Alerts	Tie
Energy Savings	YES	YES	Tie

Winner

Google

Nest Learning Thermostat (4th gen)

11% OFF

$248.60

$279.99

Buy on Amazon USA

+ Rating: 4.4
+ Included accessories: Trim Plate, Temperature Sensor
+ Connectivity: 2.4 GHz WiFi, 5 GHz WiFi, Bluetooth
- Price: $248.60 vs $204.90
- Voice Control: NO vs YES

Honeywell Home

Honeywell Home T9 Smart Thermostat

$204.90

Buy on Amazon USA

+ Price: $204.90
+ Voice Control: YES
+ Speaker: YES
- Rating: 4.3 vs 4.4
- Included accessories: Temperature Sensor vs Trim Plate, Temperature Sensor

Frequently Asked Questions

Which is better overall: Nest Learning Thermostat (4th gen) or Honeywell Home T9 Smart Thermostat?

Nest Learning Thermostat (4th gen) has the stronger overall profile in this comparison, especially for rating, included accessories, and connectivity.

What is the biggest difference between Nest Learning Thermostat (4th gen) and Honeywell Home T9 Smart Thermostat?

Price is one of the clearest differences: Nest Learning Thermostat (4th gen) lists $248.60, while Honeywell Home T9 Smart Thermostat lists $204.90.

Which one looks better on price?

Nest Learning Thermostat (4th gen) is listed at $248.60, while Honeywell Home T9 Smart Thermostat is listed at $204.90. Honeywell Home T9 Smart Thermostat (better spec).

Who should buy Nest Learning Thermostat (4th gen)?

Choose Nest Learning Thermostat (4th gen) if your priority is rating and included accessories and that matters more than price.

Who should buy Honeywell Home T9 Smart Thermostat?

Choose Honeywell Home T9 Smart Thermostat if your priority is price and voice control and that matters more than rating.

More Thermostats

Top Thermostats to compare next

Compare smart thermostats by connectivity, scheduling, sensors, display, integrations, automations, energy savings, alerts, and voice control features.

Compare Thermostats