Meet SmartCocoon: Smart Register Booster Fan

The first smart microzoning system for your home, optimizing airflow and HVAC performance while letting you control the temperature in every room!

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The Most Advanced Booster Fan

Works with any thermostat right out of the box.

SmartCocoon booster fans are the only booster fans on the market fully integrated with Google Nest and Ecobee smart thermostats. It's also compatible with Amazon Alexa.

Google Nest

The fan automatically activates on heating and cooling following Google Nest signals. With the new app, you can choose if you want your fan to activate during heating and cooling or during ventilation as well.

Ecobee

The fan automatically activates on heating, cooling, and ventilation following Ecobee signals. With the new app, you can choose if you want your fan to activate during heating, cooling, and ventilation or just during heating and cooling.

Other Thermostats

If you have any other thermostat, the fan will learn your HVAC system airflow patterns to turn on and off with heating and cooling.

  • Our booster fan is a great fit if you have some airflow, but not quite enough.
  • Please note that the fan will not activate if there is no airflow at all, and if your airflow is already strong, the fan will not make a noticeable difference.
  • If airflow is very weak, the fan may occasionally miss HVAC cycles. This can happen because there is not enough temperature change in the ductwork to trigger the fan. It is not a fan issue, it is simply a result of minimal temperature changes.

If you notice your fan missing cycles, please reach out to our customer support team and we will fine-tune your fan based on your HVAC system performance.

See What Sets SmartCocoon Apart

SmartCocoon Comparison Chart
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Bestseller
Best value
SmartCocoon
Booster Fan
+ Temp & Humidity Sensor
SmartCocoon
Booster Fan
 
Smart booster fan
App-based
Basic booster fan
Plug-in, manual only
What they have in common
Works with all thermostats ✓ ✓ ✓ ✓
HVAC sync ✓Automatic sync ✓Automatic sync ✓Automatic sync On / OffPhysical switch on unit
Internal sensor ✓Reads duct temperature ✓Reads duct temperature ✓Reads duct temperature ✗
Scheduling ✓ ✓ ✓ ✗
Set desired room temperature ✓Fan auto-adjusts to reach your target temp using accurate sensor data ✓Fan auto-adjusts to reach your estimated target temp ✓Estimated temperature ✗
Room temperature readings ✓ ✓Estimate ✓Estimate ✗
Where SmartCocoon stands out
3×10 and 4×10 sizes ✓ ✓ 4×10 only 4×10 only
App control ✓Wi-Fi, control from anywhere in the world ✓Wi-Fi, control from anywhere in the world Bluetooth onlyMust be in range to control ✗
Google Nest integration ✓ ✓ ✗ ✗
Ecobee integration ✓ ✓ ✗ ✗
Ventilation sync ✓Yes, for Google Nest and Ecobee ✓Yes, for Google Nest and Ecobee ✗ ✗
Amazon Alexa integration ✓ ✓ ✗ ✗
Speed levels ✓12 speeds ✓12 speeds Fewer speeds ✗Fixed speed
Furnace filter change reminders ✓ ✓ ✗ ✗
In-app installation & troubleshooting guides ✓ ✓ ✗ ✗
Keep your existing vent cover ✓Installs inside the vent, completely hidden ✓Installs inside the vent, completely hidden ✗Replaces your existing cover ✗Replaces your existing cover
Custom wood vent cover ✓Available for purchase ✓Available for purchase ✗ ✗
Unlock with the Temp & Humidity Sensor
Temp & Humidity Sensor ✓Integrates directly with fan ✗Available separately ✗ ✗
Humidity readings ✓ ✗ ✗ ✗
"Feels like" reading ✓ ✗ ✗ ✗
Comfort Index score (0–100) ✓ ✗ ✗ ✗
72-hour comfort history ✓ ✗ ✗ ✗
Temperature & humidity in-app alerts ✓ ✗ ✗ ✗
Supported
Not supported
Partial / limited

Take Full Control of Your Comfort

Adjust Fan Speed: Control airflow directly from the app.

Customize Room Temperatures: Set the ideal temperature for each room.

Create Schedules: Automate your fan for comfort and energy savings.

Control Power: Turn the fan on or off whenever needed.

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Now Smarter than Ever: Temperature and Humidity Sensor

Comfort Index
A real-time score from 0 to 100 based on the temperature and humidity of your room. At a glance, you always know how comfortable your space actually is.

72 Hours of Comfort History
Track temperature, humidity, Feels Like, and Comfort Index trends over the last 24 hours or 3 days, for every room, from anywhere in the world.

Feels Like Temperature
Temperature alone doesn't tell the full story. Humidity affects how air feels in your home. High humidity can make a room feel warmer and stuffier than it actually is, and low humidity can cause dry skin, irritated eyes, and general discomfort. The sensor tracks both so your SmartCocoon fan can help maintain a healthier, more balanced environment year round.

Auto Mode
Set your desired temperature and your fan turns on and off automatically with your HVAC, based on real readings from your room. No manual adjustments, just consistent comfort.

In-App Alerts
Receive a notification when your temperature or humidity goes too high or too low, so you can stay on top of your home's air quality before it affects your comfort or health.

Protect Your Home
High humidity doesn't just affect how you feel. Over time, it can cause mould and mildew growth, damage to wood floors, furniture, and walls, and poor air quality that affects your whole household. Keeping tabs on your humidity levels is one of the simplest ways to protect your home and the people in it.

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