Brand-New iFresh Series 2025

Supports connection to the MarsPro App

Get 50% OFF when you buy the marspro add-on pack together

[Smart Ventilation Kits]Mars Hydro iFresh 4″ Inline Duct Fan | Carbon Filter Combo | 6″ Clip-on Fan | New iControl Controller(Pre-order before 15th Sep.)

Original price was: $335.99.Current price is: $284.99.
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[Smart Ventilation Kits]Mars Hydro iFresh 6″ Inline Duct Fan | Carbon Filter Combo | 6″ Clip-on Fan | New iControl Controller(Pre-order before 15th Sep.)

Original price was: $405.99.Current price is: $341.99.
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Mars Hydro iFresh 4-inch Inline Duct Fan

Original price was: $129.99.Current price is: $116.99.

Classic Collection

Precision Control via Thermostat Controller

Mars Hydro 4 Inch Inline Duct Fan And Refillable Carbon Filter Combo With Thermostat Controller

Original price was: $229.99.Current price is: $195.99.
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Mars Hydro 4 inch Inline Duct Fan with Thermostat Controller

Original price was: $159.99.Current price is: $143.99.

Mars Hydro 6 inch Inline Duct Fan with Thermostat Controller

Original price was: $189.99.Current price is: $169.99.
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Mars Hydro 6 Inch Inline Fan And Refillable Carbon Filter Combo With Thermostat Controller

Original price was: $299.99.Current price is: $254.99.
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Accessories

Best-Selling Clip Fan and Carbon Filter

Mars Hydro 4 Inch Refillable Inline Air Carbon Filter Odor Control

Original price was: $69.99.Current price is: $62.99.
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Mars Hydro 6 Inch Grow Tent Clip Fan Auto-Oscillating Fan

Original price was: $55.99.Current price is: $54.99.
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Mars Hydro 6 Inch Grow Tent Clip Fan Auto-Oscillating Fan – Set of 2

Original price was: $111.98.Current price is: $89.99.
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Mars Hydro 6 Inch Refillable Inline Air Carbon Filter Odor Control

Original price was: $89.99.Current price is: $79.99.
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Revolutionizing Your Growing Experience

What grow tent size is this fan suitable for?

Our fans come in two sizes: 4-inch and 6-inch. The 4-inch fan is suitable for tents up to 100 x 100cm, while the 6-inch fan is ideal for tents 120 x 120cm and larger.

Yes. Our fans support speed adjustment through a knob controller or a thermostat controller. For iFresh fans, you can also customize the fan speed using the MarsPro App.

Yes. Our fans are compatible with smart controllers such as the iFresh MarsPro Add-On Pack or iHub Pro. With these, you can enable Bluetooth or app-based control through the MarsPro App for features like remote monitoring, auto speed adjustment, and environmental data tracking.

The inline fan comes with a 2-year full-cover warranty, and the clip-on fan includes a 1-year full-cover warranty. Free replacement or repair is provided for non-human damage during the warranty period.

Everything You Need to Know

App Interface & Features Upgrade

  • Introducing VPD Data Monitoring

Easily monitor vapor pressure deficit with a clear, data-driven dashboard for full control of your grow environment.

  • Auto Mode

Set your temp and humidity triggers, select a fan speed, and let auto mode take over. The dead zone feature prevents frequent starts and stops for smoother operation.

  • Cycle Mode

Set the run time, stop time, and number of cycles—then the fan runs in repeat mode, just like a music player, following your setup continuously.

  • Timer Mode

Timer mode lets you set up to 5 stages, customizing cooling for your plants throughout the day—giving you full control.

Standby Speed for Ongoing Airflow

The Standby Speed feature keeps the fan running at 25% instead of turning off, ensuring constant airflow and a healthy grow environment even during downtime.

MarsPro Add-On Pack

Upgrade your iFresh* anytime, anywhere with a modular Add-On Pack to unlock smart, app-controlled Pro features—giving you ultimate flexibility for the future!

*Compatible with iFresh 2025 models only.

Refillable Carbon Filter

Premium Australian carbon filter delivers top-tier odor control with minimal airflow loss. Its refillable design ensures easy maintenance and long-lasting performance—efficient, durable, and made for optimal results.

  • Introducing VPD Data Monitoring

Now you can easily track the vapor pressure deficit inside your tent. With a clear, data-driven dashboard, you’ll have full control over your growing environment.

  • Auto Mode

Set your temperature and humidity triggers, choose your fan speed, and let the auto mode take over! The fan will run at your chosen speed when triggered. And with the dead zone* feature, you'll prevent annoying frequent starts and stops.

  • Cycle Mode

Once you set the running duration, shutdown duration, and number of cycles, the fan will work like a 'repeat mode' on a music player, continuously operating as per your configuration.

  • Timer Mode

In timer mode, you can program up to 5 stages, allowing you to customize the cooling effect for your plants at different times of the day. Everything is in your control.

Versatile Applications

Ventilation for Enclosed and Humid Spaces

Grow Tent Odor and Heat Control

Formaldehyde Removal for New Homes

Which One is Right for You?

Inline Fan Type

iFresh Smart Series

Thermostat Controller

Speed Controller

Duct Size

4" (100mm) / 6" (150mm) 4" (100mm) / 6" (150mm) 4" (100mm) / 6" (150mm)

Motor style

EC motor

EC motor

EC motor

Speed Control Type

PWM

PWM

PWM

Controller

Knob / App remote control

Temperature / Humidity Programming

Stepless Speed Knob

Temp and Humidity sensor

x

Maximum Airflow

205 CFM / 402 CFM

205 CFM / 402 CFM

205 CFM / 402 CFM

Fan Speed

3000±10% RPM

3000±10% RPM

3000±10% RPM

Input Power

27 W / 62W ±5%

27 W / 62W ±5%

27 W / 62W ±5%

Buying Guide 1. iFresh Smart Series:
Ideal for users with remote control needs. It supports Bluetooth/WiFi connections to the app, allowing you to set timers and smart temperature and humidity strategies via the app, while also supporting manual speed control with a knob.

2. Thermostat Controller Series:
Perfect for users with constant temperature/humidity requirements. You can set automatic temperature and humidity triggers through the controller.

3. Speed Controller Series:
Suitable for most indoor growers with cooling or air purification needs. It offers high cost-performance, with simple yet stable functionality. The Duct Fan and Carbon Filter Combo is suitable for most users, but if you're a beginner or planning to expand into a completely new growing space, we highly recommend purchasing the Complete Fan Kit, which includes more accessories.

4. Size Guide:

Take a space with a height of around 1.8 meters (6 feet) as an example:

1)For a space around 80x80cm (2x2 feet) or smaller, using a 100mm (4'') inline duct fan should be sufficient.

2)For spaces like 120x60cm (2x4 feet) or 100x100cm (3x3 feet), either a 100mm (4'') or 150mm (6'') inline duct fan would work.

3)For spaces around 120x120cm (4x4 feet) or 150x150cm (5x5 feet), you’ll need to use a 150mm (6'') inline duct fan.

These are some common grow tent space dimensions. If your grow space is larger than 5x5 feet, you may need at least two inline duct fans to ensure adequate airflow.
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