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AC Infinity CLOUDLINE PRO S4, Quiet 4” Inline Duct Fan with Speed Controller – EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

AC Infinity CLOUDLINE PRO S4, Quiet 4” Inline Duct Fan with Speed Controller – EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

Q: What is the max temp of use for this fan? i see you said 240f, but all other manufacturers with plastic impellers say max temp 140f. are you certain?

Always stay a minimum of 25% below specified temp. At minimum they can warp and and motor performance would be affected

Q: If powered from a switched outlet, will it remember the last speed setting or does that require constant power?

Morning RS, the S4 will not remember your fan speed. It’s a manual setting only. I also have a T4 with a smart controller and it does remember and can be set to auto for heat and humidity. The T4 is for auto exhaust and S4 is intake. If it is your only fan go with the T4. Also, if you have more than 200sf to ventilate go directly to the T6. The are very quiet which is important as my room is under a bedroom. Hope this helps.

Q: How well does this work with a carbon filter?

I have a 350 Cfm Coco/Carbon Fiber filter that I place on the Exit side of my application. I have tested the filter on both the intake and the exit. I found these units Push much better than they Pull. I do have to increase the power by 10% when I install the exit filter, but it's not really an issue in my application.

Product ID: 551898487

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Details

Brand
AC Infinity
Colour
Pro Speed
Electric fan design
Exhaust Fan
Power Source
Corded
Style
Modern
Product Dimensions
17.5D x 18.8W

💨205 CFM airflow

🔇28 dBA ultra-quiet

⚙️8-speed PWM EC motor

Frequently Bought Together

AC Infinity CLOUDLINE PRO S4, Quiet 4” Inline Duct Fan with Speed Controller – EC Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

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Description

💨 Elevate your air game—quiet power that keeps you ahead of the curve.

BUILT TO LAST ADAPT - 67,000-hour rated dual ball bearings and IP44 dust/liquid resistance ensure reliable performance in any setup, mounted any way you want.
WHISPER QUIET EFFICIENCY - EC motor with dual ball bearings delivers powerful ventilation at a barely-there 28 dBA noise level—work or relax without distraction.
PRECISION AIRFLOW CONTROL - 8-speed PWM controller lets you dial in the perfect balance of airflow and silence for any environment.
HIGH STATIC PRESSURE MASTERY - Mixed flow design with stator blades powers airflow through restrictive ducts and grow tents with ease—no compromises on ventilation.
SMART COMPATIBILITY EASY MAINTENANCE - Works seamlessly with CLOUDLINE T-series smart controllers and features a detachable motor box for hassle-free cleaning.

The AC Infinity CLOUDLINE PRO S4 is a premium 4-inch inline duct fan engineered for professional-grade ventilation. Featuring a PWM-controlled EC motor with 8-speed settings, it delivers 205 CFM airflow at an ultra-quiet 28 dBA noise level. Its mixed flow design and dual ball bearings ensure high static pressure performance and long-lasting durability, making it ideal for grow tents, AV racks, and climate control applications. IP44 rated and compatible with smart controllers, it offers precise, energy-efficient airflow management with easy maintenance.

Specifications

Brand	AC Infinity
Colour	Pro Speed Controller
Electric fan design	Exhaust Fan
Power Source	Corded Electric
Style	Modern
Product Dimensions	17.5D x 18.8W x 30.2H Centimeters
Room Type	Kitchen
Special Feature	Bladeless
Recommended Uses For Product	Air Circulation, Cooling
Noise Level	28 Decibels
Wattage	21 Watts
Finish Type	Matte
Number of Blades	10
Air Flow Capacity	205 Cubic Feet Per Minute
Blade Length	7.4 Inches
Speed	2800 RPM
Voltage	240 Volts
Switch Type	Push Button
Included Components	Cord, Remote
Indoor/Outdoor Usage	Indoor
Model Name	CLOUDLINE S4
Control Method	App
Efficiency	High
Manufacturer	AC Infinity
Model number	CLOUDLINE S4
Item Weight	2 kg 580 g
Item model number	CLOUDLINE S4
Cable Length	144 Inches
Cooling type	Air
Maximum Rotational Speed	2800 RPM
Type of connector	4-Pin
Compatible Device	Transmission Coolers
Are batteries included?	No

Have a Question? See What Others Asked

What is the max temp of use for this fan? i see you said 240f, but all other manufacturers with plastic impellers say max temp 140f. are you certain?

If powered from a switched outlet, will it remember the last speed setting or does that require constant power?

How well does this work with a carbon filter?

What is the best way to connect this to 12 or 24 volt system?

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