---
product_id: 629887447
title: "BIOWIND Quiet Smart Register Booster Fan Fits 4\" x 12\" Vent Opening, Black"
brand: "biowind"
price: "473.84 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Biowind"
url: https://www.desertcart.tn/products/629887447-biowind-quiet-smart-register-booster-fan-fits-4-x-12
store_origin: TN
region: Tunisia
---

# 140 CFM airflow 16 dBA ultra-quiet 10-speed remote control BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black

**Brand:** biowind
**Price:** 473.84 DT
**Availability:** ✅ In Stock

## Summary

> 💨 Elevate your home comfort—quietly, smartly, stylishly.

## Quick Answers

- **What is this?** BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black by biowind
- **How much does it cost?** 473.84 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/629887447-biowind-quiet-smart-register-booster-fan-fits-4-x-12)

## Best For

- biowind enthusiasts

## Why This Product

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

## Key Features

- • **Smart Climate Control:** Auto on/off with precision temp sensor keeps every room perfectly balanced.
- • **Energy-Savvy Efficiency:** Maximize HVAC output while cutting energy costs with intelligent fan run-on feature.
- • **Sleek & Seamless Design:** Premium anodized aluminum frame blends effortlessly with modern interiors.
- • **Effortless Remote Comfort:** 10-speed fan control from anywhere—customize your airflow without leaving your seat.
- • **Whisper-Quiet Power Boost:** Experience powerful airflow at just 16 dBA—comfort without the noise.

## Overview

The BIOWIND Quiet Smart Register Booster Fan fits standard 4" x 12" vents and delivers 140 CFM airflow at a whisper-quiet 16 dBA. Featuring a premium anodized aluminum frame, a high-precision temperature sensor, and a 10-speed remote control, it smartly boosts HVAC efficiency by automatically adjusting fan operation to maintain balanced room temperatures. Easy to install and energy-efficient, it’s the perfect upgrade for millennial professionals seeking sleek, smart home comfort solutions.

## Description

Buy BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black | Smart Heating Cooling AC Vent Fan, Temp-Based Auto On/Off, 10-Speed Remote, Thermostat Control, Power-Off Memory: Everything Else - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works Like a Charm! - Waited over a week to make sure I liked it! What can I say? For background I’m in a very hot and humid climate during the summer and my upstairs bedroom is more similar to a jungle than to anything. But I can’t keep pumping my AC down; my basement is already equivalent to a kitchen walk in and my bank account can’t handle much more. So this vent was sort of a Hail Mary. It works exactly as I need it to. It’s not a miracle worker; but it’s darn good. It has lowered the temp of my room in comparison to the rest of upstairs which is exactly what I needed. It’s not quite as cool as my lower floors but it is making sleeping a lot easier. I’m able to use a blanket at night again thanks to this vent. It works very simply; setup took only a few minutes just had to unscrew the old vent and screw this one in, and made sure there’s a plug close enough. It can do both cooling and heating and I will be sure to try the heating in the winter as I have the same issue of my upstairs not conforming to the temp of the rest of the house. The fan is pretty quiet, I have it on a 7 but it goes up to 10, which I may need as we march towards a hot July. I’d say on 5 or lower it’s so quiet you barely notice, on 7+ you notice but it’s still about the same noise as a regular fan so no big deal for me. And it’s easy to adjust with the included remote. AND it looks nicer than a normal vent cover. Overall can’t recommend this enough, it’s been a huge help in my ability to sleep soundly and comfortably at night and actually be able to BE in my room on hot days.
Review: Super effective and efficient! - We bought an old house (built in 1900) with central air added by previous owners during renovations. The second floor bedrooms stay warm in the winter, but it was hard to get the AC to sufficiently cool the upper floor bedrooms in the spring and summer. I got this to replace the bedroom floor vent, to push more cool air into the room from the existing central air duct and it works AMAZINGLY. It feels like we have a window unit in the room. The fans blow very effectively and the programming makes sure it’s not always running. You set the temperature threshold based on the air coming from the vent (not the room temp) and when it reaches that temp the fan kicks on. This works for cooling and heating depending on the season. In the summer I set it to 68F and if the air coming from the vent is below 68F the fan kicks on. In the winter I set it to 70F and as long as the heat coming from the duct is warmer than 70F the fan kicks on. Outside of those settings, the system does not kick on. Simple and easy to program, it’s definitely a game changer for us! Worth every penny! I would highly recommend this if you have less than efficient vents in a room.

## Features

- 2026 Fan Stability Upgrade: Built with dynamic fan balancing, motor start-up verification, and noise & vibration screening to support smoother airflow, quieter operation, and long-term reliability.
- Quiet Register Booster Fan: A quiet fan system designed to improve airflow from wall and floor vents in HVAC systems, helping increase home comfort. Built with a premium anodized aluminum frame and CNC-machined details, it offers a sleek, flush, and modern appearance that blends seamlessly with your home decor.
- Eliminate Uneven Room Temperatures: The Biowind smart register vent features a programmable LED controller and a high-precision temperature sensor that works with your HVAC system. It automatically turns the vent fan on or off to deliver warm or cool air to rooms at the right time, helping maintain balanced temperatures throughout your home.
- New Upgraded Remote Control: Easily adjust the fan speed (0–10 levels) with the remote to meet diverse user needs and achieve the perfect balance between airflow performance and quiet operation. Control your comfort without getting up, simple and convenient.
- Energy-Saving & Cost-Effective: This vent booster fan is more energy-efficient than traditional air-conditioning or cooling devices. By enhancing airflow and circulation, maximize the heating or cooling from your HVAC system with minimum energy. Even after your HVAC system shuts off, the fan continues running briefly to pull remaining warm or cool air into the room—helping you save energy and reduce electricity costs.
- Compact & Easy to Install: The Biowind smart register booster fan features a compact design that is easy to install and move when needed. Fits ONLY 4" x 12" duct opening (cutout) | Rated Power: 6W | AC Input: 100 to 240V | Airflow: 140 CFM | Noise: 16 dBA. Includes wall adapter, plug and play for quick setup.
- Affordable Comfort Upgrade: Compared with large air conditioning or cooling systems, booster fans are a simple and affordable solution for improving airflow and indoor comfort, making them accessible for most households.
- Please Measure Before Ordering: Please measure the duct opening (cutout) before ordering, not the old vent cover. The listed size refers to the actual duct opening in the wall or floor. The neck of the register booster fan fits inside the opening, while the face frame sits on top of the wall or floor surface. Measuring correctly helps ensure the best fit and helps avoid unnecessary returns. Listed Size: 4" × 12", Neck Size: 9.72" × 3.93", Face Size: 13.77" x 5.51", Neck Insertion Depth: 1.96".

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D1G1GD5P |
| Air Flow Capacity | 140 cfm |
| Best Sellers Rank | #3,265 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Household Ventilation Fans |
| Blade Material | Plastic |
| Brand | BIOWIND |
| Brand Name | BIOWIND |
| Collection Name | Booster Fans |
| Color | Black 4" x 12" |
| Control Method | App, Remote |
| Controller Type | Remote Control |
| Customer Reviews | 4.3 out of 5 stars 2,770 Reviews |
| Electric Fan Design | Exhaust Fan |
| Electric fan design | Exhaust Fan |
| Finish Type | Black |
| Included Components | Cord |
| Indoor Outdoor Usage | Indoor |
| Installation Type | Insertion |
| Item Dimensions D x W x H | 1.96"D x 5.51"W x 13.77"H |
| Item Type Name | register booster fan |
| Material | Aluminum |
| Model Name | AirBoost T4 |
| Model Number | AirBoost T4 |
| Mounting Type | Floor Mount |
| Noise Level | 16 db |
| Number of Blades | 7 |
| Number of Packs | 1 |
| Number of Power Levels | 10 |
| Number of Speeds | 10 |
| Power Source | Corded Electric |
| Product Dimensions | 1.96"D x 5.51"W x 13.77"H |
| Recommended Uses For Product | Indoor |
| Room Type | Bedroom, Dining Room, Home Office, Kids Room, Living Room |
| Size | 4" x 12" |
| Special Features | Remote Controlled |
| Speed | 140 cfm |
| Standby Power Shutoff | High |
| Style | Modern |
| Theme | Modern |
| Unit Count | 1 Count |
| Wattage | 6 watts |

## Product Details

- **Brand:** BIOWIND
- **Color:** Black
- **Electric fan design:** Exhaust Fan
- **Mounting Type:** Floor Mount, Wall Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 1.96"D x 11.54"W x 5.51"H
- **Recommended Uses For Product:** Indoor
- **Room Type:** Bedroom, Dining Room, Home Office, Kids Room, Living Room
- **Special Feature:** Remote Controlled
- **Style:** Modern

## Images

![BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black - Image 1](https://m.media-amazon.com/images/I/71jKCLYGoCL.jpg)
![BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black - Image 2](https://m.media-amazon.com/images/I/713HHLABg-L.jpg)
![BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black - Image 3](https://m.media-amazon.com/images/I/61vLzuDHfxL.jpg)
![BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black - Image 4](https://m.media-amazon.com/images/I/61l69XfvEZL.jpg)
![BIOWIND Quiet Smart Register Booster Fan Fits 4" x 12" Vent Opening, Black - Image 5](https://m.media-amazon.com/images/I/61DNMtTcn8L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works Like a Charm!
*by N***E on June 26, 2026*

Waited over a week to make sure I liked it! What can I say? For background I’m in a very hot and humid climate during the summer and my upstairs bedroom is more similar to a jungle than to anything. But I can’t keep pumping my AC down; my basement is already equivalent to a kitchen walk in and my bank account can’t handle much more. So this vent was sort of a Hail Mary. It works exactly as I need it to. It’s not a miracle worker; but it’s darn good. It has lowered the temp of my room in comparison to the rest of upstairs which is exactly what I needed. It’s not quite as cool as my lower floors but it is making sleeping a lot easier. I’m able to use a blanket at night again thanks to this vent. It works very simply; setup took only a few minutes just had to unscrew the old vent and screw this one in, and made sure there’s a plug close enough. It can do both cooling and heating and I will be sure to try the heating in the winter as I have the same issue of my upstairs not conforming to the temp of the rest of the house. The fan is pretty quiet, I have it on a 7 but it goes up to 10, which I may need as we march towards a hot July. I’d say on 5 or lower it’s so quiet you barely notice, on 7+ you notice but it’s still about the same noise as a regular fan so no big deal for me. And it’s easy to adjust with the included remote. AND it looks nicer than a normal vent cover. Overall can’t recommend this enough, it’s been a huge help in my ability to sleep soundly and comfortably at night and actually be able to BE in my room on hot days.

### ⭐⭐⭐⭐⭐ Super effective and efficient!
*by D***R on June 26, 2026*

We bought an old house (built in 1900) with central air added by previous owners during renovations. The second floor bedrooms stay warm in the winter, but it was hard to get the AC to sufficiently cool the upper floor bedrooms in the spring and summer. I got this to replace the bedroom floor vent, to push more cool air into the room from the existing central air duct and it works AMAZINGLY. It feels like we have a window unit in the room. The fans blow very effectively and the programming makes sure it’s not always running. You set the temperature threshold based on the air coming from the vent (not the room temp) and when it reaches that temp the fan kicks on. This works for cooling and heating depending on the season. In the summer I set it to 68F and if the air coming from the vent is below 68F the fan kicks on. In the winter I set it to 70F and as long as the heat coming from the duct is warmer than 70F the fan kicks on. Outside of those settings, the system does not kick on. Simple and easy to program, it’s definitely a game changer for us! Worth every penny! I would highly recommend this if you have less than efficient vents in a room.

### ⭐⭐⭐⭐⭐ A Game-Changer for Hot Spots!
*by G***W on June 29, 2026*

I’ve struggled with hot spots in my house for a long time—even with the AC running constantly, some rooms just wouldn't cool down. I have to admit, I was initially skeptical. I wasn't sure if these fans would actually make a difference, how effective they would be at lowering the temperature, or how durable the motors would be over time. I decided to take the plunge and bought three units for my bedrooms and living room, and I am pleasantly surprised! Here is why I’m happy with my purchase: Effective Cooling: For the first time in a long time, the temperature in all three rooms has dropped noticeably. My house is finally cool enough to survive this heat wave. Quiet Operation: The fans are not loud at all; they sound like a standard household fan. Great Performance: I can finally feel the AC working in every room, which is exactly what I was hoping for. While the units come with a 30-month warranty, I’m hopeful they will last well beyond that so I won't even need to use it. If you’ve been dealing with inconsistent cooling in your home, I highly recommend giving these a try. So far, they have definitely been worth the investment!

## Frequently Bought Together

- BIOWIND Quiet Register Booster Fan, Smart Register Vent Fits 4" x 12" Register Holes with Remote Control and Thermostat Control, Heating Cooling AC Vent Fan - Black
- Decor Grates AJH412-BLK Oriental Floor Register, 4x12 Inches, Textured Black

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-02*