4 Best Oscillating Fan for 3×3 Grow Tents in 2023

Maintaining proper ventilation inside your grow tents is a must to keep plants from mildew attacks and ensure a healthy growing condition. And using oscillating fans is the best solution to keep air flowing inside a 3×3 grow tent.

But choosing the best oscillating fan for 3×3 grow tent isn’t as easy as it seems. You need auto-oscillating fans that provide enough airflow at all angles. The fan should be lightweight but sturdy and run quietly.

We will help you choose the right oscillating fan for your grow tent from some of the best fans available. Walk through the guide to find out the best suits you.

4 Best Oscillating Fan for 3×3 Grow Tent

Take a detailed look at the following fans’ features, pros, and cons to pick the right one for your needs.

1. Growbuds 6 Inch Oscillating Clip-On Fan for Grow Tents

Key Features

  • Material: Mesh
  • Mounting Type: Clip On
  • Controller Type: Button
  • Number of Speeds: 2
  • Number of Blades: 3
  • Wattage: 20 watts
  • Weight: 1.1 kg
  • Dimension: 9″D x 9″W x 9″H

Growbuds 6 Inch is a lightweight and compact oscillating fan for your 3×3 grow tents. It operates in two-speed settings, and you will find the three-way toggle button at the back of the fan. The slow setting delivers mild airflow, while the fast setting almost blows all the staleness in minutes.

A fixed clamp system helps the fan bite on the pole of grow tents. The clamp is suitable for poles from 16 mm to 22 mm. It is two-way adjustable. So, you can adjust the horizontal rotation and vertical tilt. The fan can rotate up to 90 degrees in the horizontal direction. And the vertical adjustment range is up to 120 degrees. So you can easily direct the airflow in any direction you want.

Each of the fan blades is 6.3 inches in length. They produce only 40 dB of noise while running in the highest setting. With all its features and benefits, it is one of the best grow tent oscillating fans.


  • Sturdy frame with lightweight design
  • Three fan blades for efficient airflow
  • Speed and tilt adjustable
  • Two-speed settings
  • Easy setup with the fixed clamp


  • Fan blades are too flimsy
  • Adjustable joints become loose quickly

2. ASKPULION Telescopic Oscillating Clip Fan

Key Features

  • Material: Plastic
  • Mounting Type: Tabletop
  • Controller Type: Button
  • Number of Speeds: 3
  • Number of Blades: 5
  • Battery Capacity: 1800 mAh
  • Weight: 0.7 kg
  • Dimension: 4.1″D x 7.1″W x 8.3″H

The biggest benefit of the ASKPULION Telescopic Oscillating Clip Fan is its telescopic extension rod. It is made of aluminum, and you can set the fan’s height in three positions. The fan will be 21.5 inches tall at its maximum height and 8.3 inches tall at its minimum height. So, delivering airflow at the right level according to the growth of your plants is very easy.

It can rotate 60 degrees horizontally to cover a wide area inside the grow tent. And the head can be tilted up to 180 degrees. So, it can direct airflow in opposite directions while being mounted in the same place.

The fan has three-speed settings, such as low, medium, and high. Its five blades rotate at a speed of 1300 RPM to 2100 RPM, depending on the speed setting. You can run the fan through USB, or it has 1800 mAh battery to operate the fan for up to four hours.


  • Easy mounting on tent poles or tables
  • 180-degree tilt adjustable head and 60-degree oscillation
  • Suitable speed setting from three options
  • Extremely quiet operation at 30dB
  • Height adjustable stand for convenient airflow level


  • The oscillating angle is a bit low
  • The extension rod isn’t that sturdy

3. Holmes HACP10B-U Oscillating Clip Fan

Holmes HACP10B-U Oscillating Clip Fan-min

Key Features

  • Mounting Type: Clip On
  • Controller Type: Smart Controllers
  • Number of Speeds: 10
  • Number of Blades: 3
  • Wattage: 12 watts
  • Weight: 1.3 kg

The compact design of this oscillating fan makes it an excellent choice for 3×3 grow tents. It has a blade length of about eight inches, with three total blades. The frame is made of metal and mesh, so the fan is pretty durable compared to other plastic oscillating fans.

It can be clamped on flat surfaces like table edges. There is no extension rod in the fan, so you can adjust the fan height. But it can be tilted vertically in all directions.

The bottom adjustment screw allows you to tilt the fan left and right. The top adjustment screw is for tilting the head front and back.

The fan has two speed settings, low and high. There is a button to turn the oscillation on and off. When in the oscillating mode, the horizontal range of the fan is more than 90 degrees. So it is easy to deliver airflow to all corners inside your grow tent.


  • Suitable for tight spaces
  • Powerful airflow at high speed
  • Two-way tilt adjustable stand with oscillation
  • Metal and mesh frame for extra durability
  • Low power usage


  • The fan is a bit loud
  • Heavier than other fans due to the metal build

4. AC Infinity CLOUDRAY S6 Grow Tent Clip Fan

Key Features

  • Mounting Type: Clip On
  • Controller Type: Smart Controllers
  • Number of Speeds: 10
  • Number of Blades: 3
  • Wattage: 12 watts
  • Weight: 1.3 kg

Among all the fans we discussed today, this is equipped with an EC motor that delivers airflow at ten speeds. So, different airflow levels suit your plants’ growth stages.

It has a sturdy clip-on system to mount the fan on tent poles. Though the stand is very short, the fan has excellent tilt adjustability. It can be tilted up to 120 degrees, and the oscillation is automatically controlled. The blades are about 6 inches in length and provide enough airflow to blow the hot air out of the grow tent.

As the fan has an IP44 rating, it can withstand highly humid environments inside grow tents. It draws only 12 watts of power and produces a very low noise of 33dB. The power cord is also long enough to plug it into outlets far from the mounting position. Overall, it is the best fan for 3×3 grow tent.


  • Modern and efficient design
  • Ten-speed settings for the most suitable airflow level
  • Durable EC motor lasts longer
  • Sturdy clamp to set up the fan
  • Oscillation can be controlled digitally


  • Fan height isn’t adjustable
  • Debris can easily enter the impeller

Grow Tent Oscillating Fan Setup

Oscillating fans can be set up inside grow tents in two methods. You can either have an active airflow or a passive airflow inside the grow tent. In the passive method, fans are used to blow hot air from the grow tent. And cool air from outside the grow tent enter the tent naturally.

But the active method uses a combination of ducts to filter the air before pushing it back to the grow tent.

Do I Need an Oscillating Fan in Grow Tent?

Of course. Such a fan keeps air circulating inside the tent so that your plants have a healthy environment for seedlings, growing, and flowering.

Fans also prevent the air inside the tent from getting too hot and stale. When the amount of Carbon Dioxide inside the tent is too high, it may become inconvenient for plants to grow. Plus, the extremely hot and humid condition inside the tent is harmful to plants.

So, you must install oscillating fans in grow tents to keep the environment cool and dry.

Where to Put Oscillating Fan in Grow Tent?

Oscillating fans can be placed in two positions, either inside or outside the tent. If you place the fan inside, mount it on the top corner of the tent so that it can push hot air from the tent. And fresh air will enter the tent at the bottom.

But if you place it outside the tent, put it in a way that pushes cold air toward the tent.

What Size Oscillating Fan for Grow Tent?

The ideal size of an oscillating fan will depend on the size of your grow tent and the density of plants. If you have a 3×3 grow tent, an oscillating fan with an airflow of about 90 CFM will suffice. But if there are ducts inside the tent, you will need a fan with at least 120 CFM of airflow to keep the environment cool.


Growing plants inside a grow tent requires enough air circulation to prevent mold and mildew. You also need to ensure the optimum temperature and humidity inside the grow tent. An oscillating fan is the easiest solution to handle the situation.

But not all oscillating fans perform well enough. Fans for smaller grow tents should be power efficient, quiet, and deliver enough airflow. We reviewed some of the most popular fans to help you find the best oscillating fan for a 3×3 grow tent. With variable speed settings, easy mounting options, and low noise, these fans will work great inside your grow tents.

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