---
product_id: 394566256
title: "RAXIAL S4, Inline Booster Duct Fan 4� with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops"
brand: "ac infinity"
price: "KD 34.85"
currency: KWD
in_stock: true
reviews_count: 5
category: "Ac Infinity"
url: https://www.desertcart.com.kw/products/394566256-raxial-s4-inline-booster-duct-fan-4-with-speed-controller
store_origin: KW
region: Kuwait
---

# 106 CFM airflow power Ultra-quiet 28 dBA noise 3-speed variable control RAXIAL S4, Inline Booster Duct Fan 4� with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops

**Brand:** ac infinity
**Price:** KD 34.85
**Availability:** ✅ In Stock

## Summary

> 💨 Elevate your airflow, silence your space.

## Quick Answers

- **What is this?** RAXIAL S4, Inline Booster Duct Fan 4� with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops by ac infinity
- **How much does it cost?** KD 34.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/394566256-raxial-s4-inline-booster-duct-fan-4-with-speed-controller)

## Best For

- ac infinity enthusiasts

## Why This Product

- Trusted ac infinity brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Boost Your Airflow Game:** Maximize ventilation with a powerful 106 CFM inline duct fan designed for seamless HVAC integration.
- • **Sleek Industrial Design:** Matte black, compact 4-inch duct fan fits discreetly into any modern workspace or home environment.
- • **Whisper-Quiet Operation:** Enjoy near-silent performance at just 28 dBA—perfect for professional spaces where focus matters.
- • **Tailored Airflow Control:** Adjust fan speed effortlessly with a built-in variable speed controller to balance airflow and noise.
- • **Built to Last, Built to Perform:** Durable unibody die-cast construction with dual ball bearings ensures vibration-free, maintenance-free operation.

## Overview

The AC Infinity RAXIAL S4 is a 4-inch inline booster duct fan engineered to enhance HVAC airflow with up to 106 CFM while maintaining ultra-low noise at 28 dBA. Featuring a variable speed controller, durable unibody die-cast construction, and permanently lubricated dual ball bearings, it delivers reliable, vibration-free ventilation ideal for basements, bathrooms, kitchens, workshops, and grow rooms. Its sleek matte black finish and compact design make it a professional-grade solution for millennial managers seeking efficient, quiet, and customizable air circulation.

## Description

Product DescriptionAn inline fan for duct boosting designed to improve airflow in heating and air conditioning applications, and ventilate home rooms like attics, workshops, bathrooms, and kitchens. Each fan uses an easy-to-use knob controller that adjusts fan speed for your specific airflow-boosting needs. It features a unibody framework that helps reduce vibration and ensures smooth and low-resistant airflow. The matte black steel cylinder is fluted and ridged for easy and secure installation in between ducting. Its balanced steel blades have a 67,000-hour lifespan and spin using permanently lubricated dual-ball bearings to eliminate regular maintenance. This kit includes one AC-powered inline booster duct fan, a speed controller with a power plug, mounting screws, and a cable management set.Speed ControllerThe inline variable speed controller can control the fan’s speed and turn it on or off. Turning the knob will increase or decrease the fan speed and optimize airflow and noise levels for your application. Its speed range includes a low, medium and high threshold, producing up to 106 CFM and 28 dBA in noise.ApplicationsThis versatile inline booster fan is made to be installed in between ducting for various applications that need improved air delivery. In households, it boosts airflow from HVAC units to remove stale air and odor, ventilating attics, workshops, kitchens, basements, etc. In grow tents, grow rooms, and indoor gardens, it’s primarily used as an intake fan to bring in fresh air. Please note this booster fan cannot be used standalone in high static pressure applications like room ventilation. Additionally, it is not suitable for use in applications with restricted airflow like systems that use carbon filters. For higher performance, see the CLOUDLINE Series.

Review: AC INFINITY INLINE raxial S4 inline Duct Fan is best in the category - The make quality of this AC INFINITY raxial S4 inline Booster Duct Fan 4 inches is very good. The Fan's performance is also extremely satisfactory. The material used for making this Duct Fan looks highly durable and the finishing is very nice. The loudness during the fans working is very low and cannot be noticed. I strongly suggest that this product is better than any other brand available in the market.
Review: Good product. It's 110v, not 230. - Good product and good support. People in India and UK, please note that this is a 110v AC source compatible and we have 230v. U need a converter or the product will have thermal runaway. Seller refunded mine and guided me in how to buy a converter too.

## Features

- A duct fan designed to increase existing airflow in HVAC systems and ventilate home spaces like attics and workshops.
- Features a variable fan speed controller, enabling you to optimize airflow and noise level for any application.
- Unibody die-cast construction with no welded seams; reduces vibration while ensuring smoother airflow.
- AC shaded-pole induction motor utilizing balanced steel blades and permanently lubricated ball bearings.
- Duct size: 4” | Dimensions: 7.28 x 3.95 x 3.95 in. | Airflow: 106 CFM | Noise: 28 dBA | Bearings: Dual Ball

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZL6FDYG |
| Air Flow Capacity | 106 Cubic Feet Per Minute |
| Best Sellers Rank | #599,842 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #830 in Exhaust Fans |
| Blade Material | Plastic |
| Brand | AC Infinity |
| Brand Name | AC Infinity |
| Cable Length | 1 Feet |
| Collection Name | Home |
| Colour | Black |
| Control Method | Touch |
| Controller Type | Button Control |
| Customer Reviews | 4.2 out of 5 stars 3,003 Reviews |
| Electric Fan Design | Blower |
| Electric fan design | Blower |
| Finish Type | Matte |
| Global Trade Identification Number | 00819137021105 |
| Included Components | Cord |
| Indoor Outdoor Usage | Indoor |
| Is Product Cordless | No |
| Item Dimensions D x W x H | 18.5D x 10W x 10H Centimeters |
| Item Type Name | Ventilation Fan |
| Item Weight | 939 g |
| Manufacturer | AC Infinity Inc. |
| Material Type | Metal |
| Model Name | RAXIAL S4 |
| Model Number | AC-RXS4 |
| Mounting Type | Duct Mount |
| Noise Level | 28 Decibels |
| Number Of Speeds | 3 |
| Number of Blades | 3 |
| Number of Power Levels | 3 |
| Power Source | Corded Electric |
| Power Source Type | Corded Electric |
| Product Dimensions | 18.5D x 10W x 10H Centimeters |
| Recommended Uses For Product | Indoor |
| Room Type | Bathroom |
| Special Features | Portable |
| Specification Met | CE |
| Standby Power Shutoff | 7.07 CFM/W |
| Style | Industrial |
| Style Name | Industrial |
| Switch Type | Push Button |
| UPC | 819137021105 |
| Unit Count | 1.0 Count |
| Voltage | 120 Volts |
| Wattage | 15 Watts |

## Product Details

- **Brand:** AC Infinity
- **Colour:** Black
- **Electric fan design:** Blower
- **Mounting Type:** Duct Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 18.5D x 10W x 10H Centimeters
- **Recommended Uses For Product:** Indoor
- **Room Type:** Bathroom
- **Special Feature:** Portable
- **Style:** Industrial

## Images

![RAXIAL S4, Inline Booster Duct Fan 4� with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops - Image 1](https://m.media-amazon.com/images/I/41nwgUmlcKL.jpg)

## Questions & Answers

**Q: Can you add a carbon filter**
A: I'm using it with a 4" carbon filter in my veg/mid  flower 2x4 tent. Airflow is pretty reasonable coming out of the end and the air is scrubbed good with a clean fresh smell. I'm here because I'm buying a second one to use as an intake fan to complete the setup. I'm only running 1 95 watt light in this tent so I don't need extreme airflow. In my 3x3 flowering tent however, I  am running the ac infinity cloudine 4" fan with the ac infinity 4" carbon filter. More lights and more smell equals more airflow needed.
These are a little bit on the louder side compared to the cloudine so if that doesn't bother you then you'll be ok. You'll need those running at full speed with the carbon filter. I run my cloudine at half speed. 
If you're looking to save some money then it will do the job but the cloudine is the one to get otherwise. 
I'll probably get another cloudine in the future for my veg tent but for now this will be ok.

**Q: Will this plug into T8 digital temp and humidity control?**
A: I use it in my tent to exhaust air out and have it in a timer, but you can def plug it into an environmental controller.

**Q: I need to run at approximately 190 to 200 cfm. Would it be quieter to run a 6 inch at high speed, or an 8 inch at low speed to achieve this flow?**
A: Go with the 8 inch which will move more air at lower speeds. Higher speed it becomes a small wind tunnel and is loud..

**Q: can this fan be used on the end of a hose connected to an engine exhaust pipe to help get the exhaust out of my garage?**
A: Usually when you are venting a car exhaust you would hook the hose directly onto the tailpipe and then vent it outside. The force of the exhaust would not need a fan. You could put this fan above that area and suck out any air that you do not want.
I have mine hooked up basically for the winter time to suck the hot air around my furnace and heat another room in the basement, and it works great.

## Customer Reviews

### ⭐⭐⭐⭐⭐ AC INFINITY INLINE raxial S4 inline Duct Fan is best in the category
*by D***) on 17 April 2025*

The make quality of this AC INFINITY raxial S4 inline Booster Duct Fan 4 inches is very good. The Fan's performance is also extremely satisfactory. The material used for making this Duct Fan looks highly durable and the finishing is very nice. The loudness during the fans working is very low and cannot be noticed. I strongly suggest that this product is better than any other brand available in the market.

### ⭐⭐⭐⭐ Good product. It's 110v, not 230.
*by V***U on 19 February 2025*

Good product and good support. People in India and UK, please note that this is a 110v AC source compatible and we have 230v. U need a converter or the product will have thermal runaway. Seller refunded mine and guided me in how to buy a converter too.

### ⭐ Broke in 1 hour of use.
*by N***A on 30 January 2025*

Broke in 1 hour! I had no idea this was such a bad idea to buy this.

## Frequently Bought Together

- AC Infinity RAXIAL S4, Inline Booster Duct Fan 4” with Speed Controller - Low Noise Inline HVAC Blower Can Fan for Basements, Bathrooms, Kitchens, Workshops
- 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

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.kw/products/394566256-raxial-s4-inline-booster-duct-fan-4-with-speed-controller](https://www.desertcart.com.kw/products/394566256-raxial-s4-inline-booster-duct-fan-4-with-speed-controller)

---

*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-11*