---
product_id: 725120382
title: "BIOWIND Quiet Register Booster Fan Fits 4\" x 12\" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze"
brand: "biowind"
price: "R$1623"
currency: BRL
in_stock: true
reviews_count: 5
category: "Biowind"
url: https://www.desertcart.com.br/products/725120382-biowind-quiet-register-booster-fan-fits-4-x-12-register
store_origin: BR
region: Brazil
---

# Energy-saving 6W power Ultra-quiet 18 dBA noise 10-speed remote control BIOWIND Quiet Register Booster Fan Fits 4" x 12" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze

**Brand:** biowind
**Price:** R$1623
**Availability:** ✅ In Stock

## Summary

> 🌬️ Quiet power, smart control—upgrade your airflow game!

## Quick Answers

- **What is this?** BIOWIND Quiet Register Booster Fan Fits 4" x 12" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze by biowind
- **How much does it cost?** R$1623 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/725120382-biowind-quiet-register-booster-fan-fits-4-x-12-register)

## 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

- • **Remote Speed Mastery:** 10 adjustable fan speeds at your fingertips—customize airflow without leaving your seat.
- • **Smart Climate Control:** Auto on/off with precision thermostat keeps your rooms perfectly balanced all day.
- • **Whisper-Quiet Comfort:** Enjoy enhanced airflow with barely-there 18 dBA noise—comfort without distraction.
- • **Energy-Efficient Boost:** Maximize HVAC output while slashing energy costs with a low 6W power draw.
- • **Sleek & Simple Install:** Compact bronze design fits standard 4"x12" vents—plug, play, and upgrade your space instantly.

## Overview

The BIOWIND Quiet Register Booster Fan is a compact, energy-efficient 10-speed vent fan designed to fit standard 4"x12" registers. Operating at a whisper-quiet 18 dBA and powered by just 6 watts, it smartly enhances HVAC airflow with remote and thermostat controls, ensuring even room temperatures and reduced energy costs. Its easy installation and sleek bronze finish make it a must-have upgrade for millennial professionals seeking comfort and efficiency.

## Description

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 - Bronze

Review: It's ok, doesnt have as much power as we were hoping. We will see in the summer of it does what we want it to do.
Review: I have an upstairs that runs too warm all summer. It's big room with one vent fed by at least a 15 foot run of 12" duct. I had been planning to sever the duct and install an inline duct fan up in the attic and either use an expensive pressure switch or tap into the thermostat wire with a relay, but this vent register booster is a much easier to install and less expensive solution - and it's working pretty well! Plugging it in is the only tricky part, but I was able to plug it in up in the attic so no cord is visible. I took my old vent register off and I probed around the edges with one of those wiring fishing rods until I found a gap where the rod could push up into the attic. Then I climbed up in the attic, plugged it into an outlet up there and then taped the end of the cord to the rod so I could pull it back down into the room. The AC register booster has a short 6 inch lead attached to it, and the rest of the wire connects to that. It's obviously heavier than a plain vent register, so it was bit difficult to install because I had to use both hands to hold the register up there and connect the wire and then reach for the screw and screwdriver to fasten it in place without letting go of anything. The thermostat measures the air in the duct so that you can set it a temperature below the normal room temperature, but above the temperature you're reading in the vent when the AC is on and it will turn the fans on only once the cold air starts coming through. Mine started off reading 68ºF in the duct, but after a while I checked it again and the reading was 66º, so I figure it's pulling the cool air through the duct faster and not allowing it to heat up in that long duct in the attic. I still need to replace my AC system, but I can tell that this room is noticeably more comfortable after installing this inexpensive solution first.

## Features

- Quiet Register Booster Fan: A quiet fan system designed for improving wall and floor vents airflow from HVAC systems to increase home comfort.
- Eliminate Uneven Room Temperatures: Biowind smart register vent equipped with programmable LED controller and high-precision temp sensor to work with HVAC. It can automatically turn on/off vent fan to heat or cool the rooms at the right time.
- New Upgraded Remote Control: Remotely adjust the fan speed(0-10 level）to meet user different needs and make a perfect balance between noise and comfort. No need to get up, More convenient.
- Energy-Saving & Cost-Effective: This vent booster fans are more energy-efficient to traditional AC and cooling devices. They rely on airflow to improve indoor temperature and circulation, maximize the heating or cooling from your HVAC system with minimum energy. Besides, This smart register vent continues running after HVAC system off, pulling every bit of heat or cold air into your home. Help you save more energy & electricity costs.
- Compact & Easy to Install: Biowind smart register booster fan is small in size and easy to move or install,making them convenient to use. Fits ONLY 4" x 12" Register Vent| Rated power: 6W | AC Input: 100 to 240 VAC| Airflow: 120 CFM | Noise: 18 Dba | Includes Wall Adapter, plug and play.
- Affordable: Compared to large-scale air conditioning and cooling devices, booster fans are relatively inexpensive and affordable, making them accessible to ordinary households.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D12QDL6C |
| Brand | BIOWIND |
| Color | Bronze 4" x 12" |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,028) |
| Date First Available | 8 April 2025 |
| Item Weight | 948 g |
| Material | Aluminum |
| Noise Level | 18 Decibels |
| Number of Speeds | 10 |
| Power / Wattage | 6 watts |
| Product Dimensions | 4.98 x 14 x 34.98 cm; 948 g |
| Special Features | Remote Controlled |

## Product Details

- **Brand:** BIOWIND
- **Colour:** Bronze 4" x 12"
- **Electric fan design:** Exhaust Fan
- **Mounting type:** Floor Mount, Wall Mount
- **Power source:** Corded Electric
- **Product dimensions:** 5D x 14W x 35H centimeters
- **Recommended uses for product:** Indoor
- **Room type:** Bedroom
- **Special features:** Remote Controlled
- **Style:** Modern

## Images

![BIOWIND Quiet Register Booster Fan Fits 4" x 12" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze - Image 1](https://m.media-amazon.com/images/I/61QWJxnpTYL.jpg)
![BIOWIND Quiet Register Booster Fan Fits 4" x 12" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze - Image 2](https://m.media-amazon.com/images/I/61q0jeHP7dL.jpg)
![BIOWIND Quiet Register Booster Fan Fits 4" x 12" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze - Image 3](https://m.media-amazon.com/images/I/61vLzuDHfxL.jpg)
![BIOWIND Quiet Register Booster Fan Fits 4" x 12" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze - Image 4](https://m.media-amazon.com/images/I/71IQ7sVv7zL.jpg)
![BIOWIND Quiet Register Booster Fan Fits 4" x 12" Register Holes, 10-Speed Smart Heating Cooling AC Vent Fan with Remote Control and Thermostat Control - Bronze - Image 5](https://m.media-amazon.com/images/I/71KsuA0JIuL.jpg)

## Customer Reviews

### ⭐⭐⭐ Review
*by S***E on 4 January 2026*

It's ok, doesnt have as much power as we were hoping. We will see in the summer of it does what we want it to do.

### ⭐⭐⭐⭐⭐ Review
*by J***W on 15 May 2025*

I have an upstairs that runs too warm all summer. It's big room with one vent fed by at least a 15 foot run of 12" duct. I had been planning to sever the duct and install an inline duct fan up in the attic and either use an expensive pressure switch or tap into the thermostat wire with a relay, but this vent register booster is a much easier to install and less expensive solution - and it's working pretty well! Plugging it in is the only tricky part, but I was able to plug it in up in the attic so no cord is visible. I took my old vent register off and I probed around the edges with one of those wiring fishing rods until I found a gap where the rod could push up into the attic. Then I climbed up in the attic, plugged it into an outlet up there and then taped the end of the cord to the rod so I could pull it back down into the room. The AC register booster has a short 6 inch lead attached to it, and the rest of the wire connects to that. It's obviously heavier than a plain vent register, so it was bit difficult to install because I had to use both hands to hold the register up there and connect the wire and then reach for the screw and screwdriver to fasten it in place without letting go of anything. The thermostat measures the air in the duct so that you can set it a temperature below the normal room temperature, but above the temperature you're reading in the vent when the AC is on and it will turn the fans on only once the cold air starts coming through. Mine started off reading 68ºF in the duct, but after a while I checked it again and the reading was 66º, so I figure it's pulling the cool air through the duct faster and not allowing it to heat up in that long duct in the attic. I still need to replace my AC system, but I can tell that this room is noticeably more comfortable after installing this inexpensive solution first.

### ⭐⭐⭐⭐⭐ Review
*by T***B on 3 September 2025*

I want to improve cooling on the 2nd floor. My house has one central air conditioner with ducts and one controller on the main floor. I installed 3 register fans, one in each bedroom on the 2nd floor of a 2 storey house. Cooling on the 2nd floor has improved. These register fans are quiet on speed settings 1 to 5. Build quality looks good.

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**Shop now:** [https://www.desertcart.com.br/products/725120382-biowind-quiet-register-booster-fan-fits-4-x-12-register](https://www.desertcart.com.br/products/725120382-biowind-quiet-register-booster-fan-fits-4-x-12-register)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-24*