AC InfinityCLOUDLINE S4, Quiet 100mm Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics, 4-Inch

AC InfinityCLOUDLINE S4, Quiet 100mm Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics, 4-Inch

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: 228868320

Secure Transaction

Details

Brand
AC Infinity
Colour
Blackone
Electric fan design
Exhaust Fan
Power source
Power Adapter
Style
Industrial
Product dimensions
17.5D x 18.8W

⚡21W power - energy-efficient motor

💨205 CFM airflow - powerful ventilation

🔇28 dBA noise - whisper-quiet operation

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

AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust

AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

Description

💨 Elevate your airflow game—quiet, powerful, and energy-smart ventilation.

ENERGY SMART DESIGN - Low 21W power consumption means powerful airflow without the energy guilt.
VERSATILE VENTILATION - Ideal for grow tents, AV racks, or room cooling—adaptable to your unique airflow needs.
ULTRA QUIET PERFORMANCE - At just 28 dBA, it’s quieter than a library, keeping your space peaceful and productive.
COMPLETE INSTALLATION KIT - Includes power adapter and mounting hardware for hassle-free setup and instant upgrade.
PRECISION AIRFLOW CONTROL - 8-speed PWM controller lets you dial in perfect ventilation for any environment.

The AC Infinity CLOUDLINE S4 is a 4-inch inline duct fan delivering 205 CFM airflow with whisper-quiet 28 dBA noise levels. Featuring an 8-speed PWM controller and energy-efficient 21W EC motor, it’s designed for versatile ventilation in grow tents, AV racks, and climate control setups. Includes all necessary hardware for easy installation.

Specifications

Brand	AC Infinity
Model Number	AI-CLS4
Colour	Blackone
Product Dimensions	9 x 19 x 30 cm; 2.61 kg
Power / Wattage	21 watts
Voltage	240 Volts
Noise Level	28 dB
Special Features	High Velocity, Waterproof
Item Weight	2.61 kg

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?

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App