---
product_id: 531929416
title: "Automatic Duct Fan 100mm, Inline Fan with Differential Fan Pressure Switch, Air Vent Booster for Industrial HVAC Ducting Ventilation Exhaust Systems, 4-Inch"
brand: "ac infinity"
price: "C$22921"
currency: NIO
in_stock: true
reviews_count: 5
category: "Ac Infinity"
url: https://www.desertcart.ni/products/531929416-automatic-duct-fan-100mm-inline-fan-with-differential-fan-pressure
store_origin: NI
region: Nicaragua
---

# 230 CFM airflow 5-speed PWM EC motor 60 dBA ultra-quiet Automatic Duct Fan 100mm, Inline Fan with Differential Fan Pressure Switch, Air Vent Booster for Industrial HVAC Ducting Ventilation Exhaust Systems, 4-Inch

**Brand:** ac infinity
**Price:** C$22921
**Availability:** ✅ In Stock

## Summary

> 💨 Elevate your airflow game—smart, silent, and unstoppable!

## Quick Answers

- **What is this?** Automatic Duct Fan 100mm, Inline Fan with Differential Fan Pressure Switch, Air Vent Booster for Industrial HVAC Ducting Ventilation Exhaust Systems, 4-Inch by ac infinity
- **How much does it cost?** C$22921 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/531929416-automatic-duct-fan-100mm-inline-fan-with-differential-fan-pressure)

## 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

- • **Compact Powerhouse:** Boosts HVAC performance with 230 CFM airflow in a sleek 4-inch inline fan design.
- • **Omnidirectional Mounting:** Install vertically, horizontally, or diagonally to fit any duct layout seamlessly.
- • **Whisper-Quiet Efficiency:** Next-gen motor design keeps noise at a discreet 60 dBA while maximizing airflow.
- • **Precision Airflow Control:** Five adjustable speeds powered by advanced PWM EC motor for tailored ventilation.
- • **Effortless Smart Activation:** Automatically triggers with duct pressure changes—no manual fuss.

## Overview

The AC Infinity Automatic Duct Fan 100mm is a compact, 4-inch inline ventilation booster designed for both industrial and residential HVAC systems. Featuring a differential pressure switch for automatic activation, five PWM-controlled fan speeds, and omnidirectional mounting, it delivers up to 230 CFM airflow quietly at 60 dBA. Powered by an energy-efficient EC motor, this fan ensures precise, hassle-free airflow enhancement to optimize heating and cooling delivery.

## Description

Product DescriptionAn automatic booster fan designed to improve airflow delivery in longer ductwork for more effective heating or cooling in home or industrial settings. Features a highly intuitive differential pressure switch that senses changes in your ducting to automatically operate its on/off activation. It also allows for mounting in any direction, making it possible to direct airflow vertically, horizontally, or diagonally. The inline duct fan also features five speeds powered by PWM controls that can generate precise airflow levels. This, combined with its flexibility in installation, provides total ventilation control in extended ducting and other difficult-to-reach spaces.Automatic Pressure SensingThe fan pressure switch delivers automatic activation capabilities to boost your heating or cooling on-demand, eliminating the need for manual adjustments. This is achieved by detecting pressure change in your ducting and turning it on whenever your home appliance is on. The smart sensor also allows you to omnidirectionally mount the duct fan for enhanced airflow versatility in existing HVAC systems.Quiet and Energy Efficient DesignThe automatic duct fan features a next-gen EC motor that powers quiet and energy-efficient performance. This innovative motor is controlled with PWM technology to ensure smooth performance while minimizing heat and noise levels. Its mixed flow design gives this vent booster fan a high static pressure rating to enhance airflow in HVAC applications with restricted air movement. This includes industrial settings like manufacturing and processing plants, as well as home residential settings such as bathroom ventilation and central air and heating systems.

Review: Triggers reliably. Can be used as make up air unit.
Review: Very quiet, great air flow!

## Features

- Inline duct fan for boosting airflow in ducting and vent systems to ensure heating or cooling delivery.
- Automatically activates the ventilation fan by detecting pressure change to eliminate manual adjusting.
- Differential pressure switch supports mounting in any position to improve directional airflow versatility.
- Features five fan speed levels powered by the PWM-controlled EC motor for more precise ventilation.
- Duct Size: 4” | Dim: 6.9 x 11.9 x 7.4 in. | Airflow: 230 CFM | Noise: 60 dBA | Bearings: Dual Ball
- This product is equipped with a Type-G power plug and is compatible with the voltage commonly used in the United Kingdom.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C2W14V6L |
| Air Flow Capacity | 230 Cubic Feet Per Minute |
| Best Sellers Rank | 751,211 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,645 in Bathroom Fans |
| Brand | AC Infinity |
| Compatible Devices | Transmission Coolers |
| Cooling Method | Air |
| Cooling method | Air |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 96 Reviews |
| Global Trade Identification Number | 00819137023789 |
| Included Components | Cord |
| Item Dimensions L x W x H | 30.2L x 17.5W x 18.8H centimetres |
| Item Type Name | Duct Fan |
| Item Weight | 2.27 Kilograms |
| Manufacturer | AC Infinity |
| Material | Metal |
| Noise Level | 60 Decibels |
| Power Connector Type | 2-Pin |
| Power connector type | 2-Pin |
| Product dimensions | 30.2L x 17.5W x 18.8H centimetres |
| UPC | 819137023789 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Wattage | 31.44 watts |

## Product Details

- **Air flow capacity:** 230 Cubic Feet Per Minute
- **Brand:** AC Infinity
- **Compatible devices:** Transmission Coolers
- **Cooling method:** Air
- **Material:** Metal
- **Noise level:** 60 Decibels
- **Power connector type:** 2-Pin
- **Product dimensions:** 30.2L x 17.5W x 18.8H centimetres
- **Voltage:** 12 Volts
- **Wattage:** 31.44 watts

## Images

![Automatic Duct Fan 100mm, Inline Fan with Differential Fan Pressure Switch, Air Vent Booster for Industrial HVAC Ducting Ventilation Exhaust Systems, 4-Inch - Image 1](https://m.media-amazon.com/images/I/51DcPrezDUL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Triggers reliably. Can be used as make up air unit.
*by S***T on 19 November 2025*



### ⭐⭐⭐⭐⭐ Very quiet, great air flow!
*by D***Y on 26 November 2025*



### ⭐⭐⭐⭐⭐ No more d80 code from LG Dryer. !!!!
*by A***T on 23 December 2025*



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**Shop now:** [https://www.desertcart.ni/products/531929416-automatic-duct-fan-100mm-inline-fan-with-differential-fan-pressure](https://www.desertcart.ni/products/531929416-automatic-duct-fan-100mm-inline-fan-with-differential-fan-pressure)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-12*