---
product_id: 36751912
title: "VIVOSUN R4 4\" Inline Fan, 190 CFM for Grow Basement Bathroom Kitchen Attic"
brand: "vivosun"
price: "€ 189.15"
currency: EUR
in_stock: true
reviews_count: 13
category: "Vivosun"
url: https://www.desertcart.es/products/36751912-vivosun-r4-4-inline-fan-190-cfm-for-grow-basement
store_origin: ES
region: Spain
---

# 190 CFM airflow power Ultra-quiet <30 dB noise Stepless adjustable speed VIVOSUN R4 4" Inline Fan, 190 CFM for Grow Basement Bathroom Kitchen Attic

**Brand:** vivosun
**Price:** € 189.15
**Availability:** ✅ In Stock

## Summary

> 💨 Elevate your air game—quiet, powerful, and tailored ventilation for the modern pro.

## Quick Answers

- **What is this?** VIVOSUN R4 4" Inline Fan, 190 CFM for Grow Basement Bathroom Kitchen Attic by vivosun
- **How much does it cost?** € 189.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/36751912-vivosun-r4-4-inline-fan-190-cfm-for-grow-basement)

## Best For

- vivosun enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Indoor Use:** Ideal for grow tents, basements, kitchens, and 3D printing workshops—breathe better everywhere.
- • **Whisper-Quiet Operation:** Maintain focus and calm with noise levels below 30 dB—almost silent performance.
- • **Powerful 190 CFM Airflow:** Maximize fresh air circulation for your grow room, bathroom, or workspace.
- • **Customizable Speed Control:** Fine-tune airflow effortlessly with the stepless speed controller for perfect ventilation.
- • **Compact & Easy Installation:** Lightweight design with mounting bracket fits tight spaces and installs in minutes.

## Overview

The VIVOSUN R4 4" Inline Fan delivers robust 190 CFM airflow powered by a 2300 RPM brushless motor, combining axial and centrifugal fan benefits for efficient air circulation. Engineered with durable plastic housing and ultra-quiet blades operating below 30 dB, it offers stepless speed adjustment for precise control. Compact and lightweight, it installs easily in tight indoor spaces, making it perfect for grow rooms, bathrooms, basements, kitchens, and workshops seeking reliable, low-noise ventilation.

## Description

desertcart.com: VIVOSUN R4 4" Inline Fan, 190 CFM for Grow Basement Bathroom Kitchen Attic | Ventilation Exhaust Fan & Speed Controller, Vent Booster for HVAC, Workshop, Grow Tents, 3D Printer : Everything Else

Review: Great kit that does the job! - I bought 2 of these kits since I caught one on sale. I do not regret buying either kit. The fan instantly helped me keep my temps and humidity in check in a small room and a 5x5 tent. Even on low the exhaust fan sucks in the walls of my tent (I need to add an inlet fan to fix this). The carbon filter does a great job at keeping the smell down in both the room and the tent. There is literally no smell at all on the other side of the door or tent. The only 2 things I could complain a little about is that the fan is a little loud and they should have included a 3rd hose clamp in the kit. Even on low, there is no way someone is going to walk in a room with your tent and exhaust running and not wonder what the noise is. Overall this is a great kit and well worth the money. Don't expect it to be whisper quiet and pickup an extra 6" hose clamp before you try to install it and I think you'll be very happy with this kit.
Review: Quiet, reliable. - Quiet fan, working well for me so far, adjustable speed works fine with variac speed controller.

## Features

- Durable & Energy-Efficient Ventilation: Constructed from reinforced plastic housing for long-lasting reliability; This powerful blower with a fan speed of 2300 RPM can create an air flow of 190 CFM; It combines the features and benefits of axial and centrifugal fan, effectively circulating air
- Low Noise Level: The durable fan blades revolve smoothly and powerfully, which helps collect airflow volume and cut noise output; A less than 30 dB noise level will not disturb your work
- Adjustable Speed: A stepless speed controller on the power cord enables the fan to run at different speeds; With this speed switch, you can adjust it to the desired airflow level
- Easy Installation: This duct fan is compact and lightweight so it can be installed in small areas; Comes with an installation bracket indicating the direction of the airflow; Removable duct ends with locking tabs
- Versatile Applications: Suitable for industrial, household and horticulture ventilation applications; It can quietly and efficiently moving large volumes of air throughout your ventilation system
- Suitable for indoors: VIVOSUN fan is the ideal solution for your indoor grow room (grow tent air circulation), bathroom moisture removal, basement mold prevention, and 3D printing workshop heat & dust management

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01DXYMGOM |
| Air Flow Capacity | 190 cfm |
| Best Sellers Rank | #54,243 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #152 in Household Ventilation Fans |
| Blade Length | 4 inches |
| Blade Material | Plastic |
| Brand | VIVOSUN |
| Brand Name | VIVOSUN |
| Collection Name | Ventilation_Fans |
| Color | 4" Fan |
| Control Method | App |
| Controller Type | Button Control |
| Customer Reviews | 4.5 out of 5 stars 13,036 Reviews |
| Electric Fan Design | Blower |
| Electric fan design | Blower |
| Finish Type | Powder Coated |
| Included Components | Cord |
| Indoor Outdoor Usage | Indoor |
| Installation Type | Mounted |
| Item Dimensions D x W x H | 7.66"D x 11.16"W x 7.82"H |
| Item Weight | 4.7 pounds |
| Manufacturer | VIVOSUN |
| Material | Plastic |
| Model Name | 306201P-4 |
| Model Number | 306201P-4 |
| Motor Type | Brushless |
| Mounting Type | Duct Mount |
| Noise Level | 30 db |
| Number of Blades | 10 |
| Number of Packs | 1 |
| Part Number | 1 |
| Power Source | Electric |
| Product Dimensions | 7.66"D x 11.16"W x 7.82"H |
| Recommended Uses For Product | VERSATILE APPLICATIONS: Suitable for industrial, household and horticulture ventilation applications for air clean and temperature control. |
| Size | 4" Basic |
| Special Features | Lightweight |
| Speed | 2300 rpm |
| Style | Basic |
| UPC | 714119464157 |
| Voltage | 110 volts |
| Warranty Description | Manufacturer Warranty for 90 days from date of purchase. |
| Wattage | 59 watts |

## Product Details

- **Brand:** VIVOSUN
- **Color:** 4" Fan
- **Controller Type:** Button Control
- **Electric fan design:** Blower
- **Mounting Type:** Duct Mount
- **Power Source:** Electric
- **Product Dimensions:** 7.66"D x 11.16"W x 7.82"H
- **Special Feature:** Lightweight
- **Style:** Basic

## Images

![VIVOSUN R4 4" Inline Fan, 190 CFM for Grow Basement Bathroom Kitchen Attic - Image 1](https://m.media-amazon.com/images/I/61w9EzO2VfL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will this work with a speed controller?**
A: This fan alreadly has a stepless speed controller on the power cord enables the fan to run at different speeds.

**Q: Which size tent work with this fan?**
A: For 4 Inch fan, we recommend the 48"x 24"x60"/36"x 36"x72" tents.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great kit that does the job!
*by J***W on September 20, 2021*

I bought 2 of these kits since I caught one on sale. I do not regret buying either kit. The fan instantly helped me keep my temps and humidity in check in a small room and a 5x5 tent. Even on low the exhaust fan sucks in the walls of my tent (I need to add an inlet fan to fix this). The carbon filter does a great job at keeping the smell down in both the room and the tent. There is literally no smell at all on the other side of the door or tent. The only 2 things I could complain a little about is that the fan is a little loud and they should have included a 3rd hose clamp in the kit. Even on low, there is no way someone is going to walk in a room with your tent and exhaust running and not wonder what the noise is. Overall this is a great kit and well worth the money. Don't expect it to be whisper quiet and pickup an extra 6" hose clamp before you try to install it and I think you'll be very happy with this kit.

### ⭐⭐⭐⭐⭐ Quiet, reliable.
*by D***R on June 16, 2026*

Quiet fan, working well for me so far, adjustable speed works fine with variac speed controller.

### ⭐⭐⭐⭐ Noisy / Not Properly Balanced Impeller/ 4yr Life? New models wt better motor?
*by L***E on June 8, 2025*

I just recently (06/25) replaced the fan unit from this kit that I purchased here on Amazon July 26, 2021. The complete kit was on sale for what is normally the price for just the fan - $59.49. From the beginning, the blower unit showed enough vibration that I couldn't use the included wall mount and had to resort to laying it on a cushioning bag of fiberfill on the top of the grow tent as a vibration damper. I needed the clearance inside the enclosure, so although hanging it may (or may not have) transmitted the vibration from the unit through the frame as badly as it did through the wall bracket, it wasn't an option. Laying on the fiberfill, the noise was reduced to a tolerable level, and the unit ran 24/7 at full RPM for just-a-month-shy of a full 4 years. Running the blower with the intake hose removed the imbalance of the impeller and the amount of deflection from centered was clearly visible. Still, there was enough clearance between the red impeller and the venturi that this did not interfere with the function of the unit. At 195 CFM, it has good suction and air could be felt processing through the filter on the exhaust end. However, starting at the beginning of 2025 the fan suffered from reduced RPM / CFM and sounded strained. I regularly clear the intake impeller of any airborne particulates that might accumulate on the impeller blade edges, so I removed the intake venturi and the white center screw to unmount the blade. The blade itself was free of accumulate. The shaft of the motor, on the other hand, was difficult to turn. The motor in question in my July 2021 model does not look like the current depictions that suggest a multi-field induction or EC motor. I recognize the motor as a variant of the type of small wire wound motor that had been used for decades in household refrigerators to circulate the air in and from the freezer. These motors are ideal in a sub-freezing environment as the motors and bearings are literally cooled by the freezer environment. As such they could run for 10-20 years before the bearings run dry or wear - and even then, I have 'resurrected' many that were seized or binding by re-oiling with lightweight synthetic oil at the bearing endcaps. In the case of the VivoSun motor, it was run in non-refrigerated environment. The bearings were thirsty and did bring back the RPMs upon replenishment, but the imbalanced impeller had also worn the actual sleeved bearing and shaft surfaces so that the amount of deflection, now caused the freely spinning fan to strike the inside of the plenum -resulting in chattering at full speed and dramatic vibration at reduced speeds. I have seen a number of others complain about this fan (even as separate from this complete kit). Unless the manufacturer has corrected the balance issue with the red intake impeller, and replaced the refrigerator evaporator style motor with something more substantial, noise / vibration will be an issue along with potential early replacement. I chose to try a 4" Vevor EC motor fan unit for about the same pricepoint and so far it is immediately quieter with no significant vibration. It also uses less than half (23w) of the power of this one (59w). Since I also have extensive experience with major household appliances using EC motors, I know that the motor control circuitry is a weak point so it will remain to be seen if it will outlast the nearly 4 years life of this unit - but it's already worth it in how quietly it moves its 205CFM vs 195 from this noisier unit.

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-09-18*