Updated October 2026
Data from Amazon and official Cielo and Honeywell Home sites.
2026 verdict
Prioritising the occupied room on a forced-air system, the Honeywell Home T9 Smart Thermostat is the thermostat with occupancy-sensing room sensors.
Winner
Honeywell Home T9 Smart ThermostatLast recorded priceOct 6, 2026$209.00
Currently unavailable on Amazon USA
One ships in the box, the warranty is 2 years, and Apple Home is supported. The Cielo Breez Max is the infrared wall control for a mini-split, with humidity sensing and Bluetooth, and with no remote sensor and no Apple Home. Buy the Honeywell Home T9 Smart Thermostat for ducted rooms that disagree. Buy the Cielo Breez Max when the equipment only understands a handheld remote.
vs
Winner
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| Feature | Cielo Breez Max | Honeywell Home T9 Smart Thermostat | Winner |
|---|---|---|---|
| Rating | 4.6 | 4.3 | Cielo Breez Max |
| Warranty | 1 year | 2 years | Honeywell Home T9 Smart Thermostat |
| Included accessories | None | Temperature Sensor | Honeywell Home T9 Smart Thermostat |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi | Cielo Breez Max |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature Sensors | Honeywell Home T9 Smart Thermostat |
| Sensors | Temperature, Humidity | Proximity / Motion, Occupancy, Temperature, Humidity | Honeywell Home T9 Smart Thermostat |
| Screen | YES | YES | Tie |
| Alerts | None | Temperature Alerts | Tie |
| Energy Savings | YES | YES | Tie |
| System Health Monitor | YES | YES | Tie |
| Voice Control | YES | YES | Tie |
| Speaker | NO | NO | Tie |
What the differences mean
Room sensors or line of sight
The Honeywell Home T9 Smart Thermostat includes a Smart Room Sensor, supports more, and can follow occupancy or average rooms. The Cielo Breez Max has no external sensor support. It measures temperature and humidity where you mount it, and that mount has to face the mini-split. It will not map a second room the way the T9 does.
What equipment they control
The Honeywell Home T9 Smart Thermostat is a wired thermostat, with a C-wire adapter included, and it is not compatible with electric baseboard heat. The Cielo Breez Max never lands on thermostat cable. It sends infrared to a mini-split, window unit or portable AC and can run from USB or 24 V AC.
Platforms
Both list Alexa, Google Home, SmartThings and Home Assistant, and neither supports Matter. The Honeywell Home T9 Smart Thermostat also lists Apple Home, which is why it wins integrations. The Cielo Breez Max does not support Apple Home. The Cielo has Bluetooth and wins connectivity on that radio. The T9 is 2.4 GHz Wi-Fi only.
Warranty and occupancy
The Honeywell Home T9 Smart Thermostat warranty is 2 years, against 1 year on the Cielo Breez Max. The T9 has occupancy and motion sensing. The Cielo does not. Both have humidity and temperature sensors, manual and automatic schedules, and energy savings. Only the T9 shows weather on the display.
Which one to buy if
- the furnace is ducted and one bedroom runs cold
The Honeywell Home T9 Smart Thermostat includes a room sensor and can prioritise the occupied room instead of the hallway reading.
- heat and cooling come from a ductless mini-split
The Cielo Breez Max speaks infrared to that indoor unit and keeps schedules on the device when the internet drops.
- the thermostat should appear in Apple Home
The Honeywell Home T9 Smart Thermostat supports Apple Home. The Cielo Breez Max does not support Apple Home or Matter.
- you want Bluetooth during setup and no extra sensor
The Cielo Breez Max has Bluetooth and a built-in humidity sensor. The Honeywell Home T9 Smart Thermostat has neither Bluetooth nor a need for it, because the remote sensor is the point.
$114.30
- + Rating: 4.6
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- - Warranty: 1 year vs 2 years
- - Included accessories: None vs Temperature Sensor
Winner
- + Warranty: 2 years
- + Included accessories: Temperature Sensor
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, External Temperature Sensors
- - Rating: 4.3 vs 4.6
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, Bluetooth
What owners say
Owners of both thermostats say the old control was the problem, a hallway stat or a lost remote, and they complain about software more than about the sensor. Honeywell Home T9 Smart Thermostat owners single out the room sensor noticing which space is occupied and letting them hold a bedroom at night. They call the Resideo app fiddly, say a change from the phone becomes a permanent hold over the schedule, and report sensor batteries that run down fast. Cielo Breez Max owners single out a minutes-long setup that reads the existing handset, and Comfy mode that stops the mini-split overshooting. They need line of sight to the indoor unit, and they say the original remote can desync the app.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Cielo Breez Max
- Honeywell Home T9 Smart Thermostat
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Frequently Asked Questions
Which thermostat fits, the Cielo Breez Max or the Honeywell Home T9 Smart Thermostat?
The Honeywell Home T9 Smart Thermostat for a forced-air system with uneven rooms. It wins on the included sensor, Apple Home, occupancy and a 2 year warranty. The Cielo Breez Max is for a mini-split or window unit, and it wins Bluetooth plus a system that never needs thermostat wiring.
What is the biggest difference between the Cielo Breez Max and the Honeywell Home T9 Smart Thermostat?
The Cielo Breez Max controls infrared air conditioners from the wall. The Honeywell Home T9 Smart Thermostat wires into central HVAC and uses room sensors, one included, to follow occupancy.
Can the Cielo Breez Max use room sensors like the Honeywell Home T9 Smart Thermostat?
No. The Cielo Breez Max does not support external temperature sensors. The Honeywell Home T9 Smart Thermostat includes one and can prioritise a room or average several.
Do both work with Home Assistant and Apple Home?
Home Assistant, yes, on both the Cielo Breez Max and the Honeywell Home T9 Smart Thermostat. Apple Home, only on the T9. The Cielo does not support Apple Home or Matter.
Who should buy the Honeywell Home T9 Smart Thermostat?
Anyone with ducted heating or cooling and a room that is always a couple of degrees off, who wants the sensor in the box and Apple Home. It is not for electric baseboard heat.
Who should buy the Cielo Breez Max?
Anyone whose mini-split, window unit or portable AC still uses a handheld remote. Place it in line of sight, and do not expect it to balance a second room with a wireless sensor.
Full comparison table
Compare all 23 Thermostats side by side
You are looking at two of them. The full table lines up all Thermostats in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 23 Thermostats
- 51 specs compared
- 47 filters
- Cielo
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$114.30 
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Honeywell HomeT5 Smart Thermostat
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EcobeeSmart Thermostat Essential
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Honeywell HomeX8S Smart Thermostat
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T5 Smart Thermostat
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T9 Smart Thermostat
4.3(2,982)Last priceOct 6, 2026$209.00
Unavailable - ThermostatsHoneywell Home
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X7S Smart Thermostat
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X8S Smart Thermostat
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Water Leak SensorsHoneywell HomeL1 WiFi Water Leak and Freeze Detector
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