---
product_id: 749411700
title: "Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents"
brand: "mars hydro"
price: "₩75752"
currency: KRW
in_stock: false
url: https://www.desertcart.kr/products/749411700-mars-hydro-ifresh-4-inch-smart-inline-duct-fan-variable
store_origin: KR
region: South Korea
---

# Smartphone app control Real-time temp & humidity 205 CFM airflow Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents

**Brand:** mars hydro
**Price:** ₩75752
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Grow Smarter, Not Harder — Your Climate, Your Command!

## Quick Answers

- **What is this?** Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents by mars hydro
- **How much does it cost?** ₩75752 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/749411700-mars-hydro-ifresh-4-inch-smart-inline-duct-fan-variable)

## Best For

- mars hydro enthusiasts

## Why This Product

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

## Key Features

- • **Automated Loop Timing:** Set daily start times and durations for hands-free, consistent ventilation tailored to your grow schedule.
- • **Smart Climate Triggers:** Automatically adjusts fan speed based on preset temperature and humidity ranges to maintain perfect grow conditions.
- • **Powerful & Whisper-Quiet:** 205 CFM airflow with PWM-controlled EC motor ensures efficient ventilation without disruptive noise.
- • **Effortless Climate Mastery:** Control fan speed, on/off, and monitor environment remotely via Mars Hydro APP for ultimate convenience.
- • **Real-Time Environmental Insights:** Monitor temperature, humidity, fan speed (RPM), and airflow (CFM) live on your smartphone, anytime, anywhere.

## Overview

The Mars Hydro iFresh 4-Inch Smart Inline Duct Fan delivers 205 CFM of powerful, low-noise airflow with advanced PWM-controlled EC motor technology. Integrated temperature and humidity sensors provide real-time environmental data accessible via the Mars Hydro app, enabling remote fan speed control, automated loop timing, and climate-triggered ventilation. Designed for indoor grow tents, it ensures optimal climate conditions effortlessly, making it an essential tool for professional and hobbyist growers alike.

## Description



## Features

- Smart Ventilation For Indoor Grows: Download the Mars Hydro APP to connect to the 6-inch inline duct fan and growers can enjoy OTA remote control and smart features including alarms, climate triggers, loop timers with a few clicks on their smartphone ... Fan speed, and on/off can also be done with your finger.
- Powerful Inline Fan: The Mars Hydro iFresh 4-inch inline fan provides up to 205 CFM of airflow with low noise thanks to its PWM-controlled EC-powered motor and mixed-flow design.
- Real-Time Environment Data Monitor: 4-inch inline fan comes with a probe sensor so key climate data - temperature and relative humidity - can be displayed in real-time on the APP screen, whether you are near your grow unit or not. When the duct fan is operating, growers can get a clear picture of the fan speed (RPM) and airflow (CFM) on the screen.
- Loop Timing Schedule: By setting a start time and duration, the Mars Hydro iFresh 4" inline fan will automatically start working at a preset time each day and complete its task at the end of the duration. Fan speed is the default speed.
- Climate Triggers: Growers can choose another automatic setting - the climate trigger. By setting a "safe range" of temperature and humidity, the inline fan will start working at maximum speed when the temperature or humidity is not within that range. As a result, the optimal climate is always maintained in the grow room.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | MARS HYDRO |
| Item model number | iFresh 4 Inch Smart Inline Fan |
| ASIN | B0BRSKN2W7 |

## Product Details

- **Brand:** MARS HYDRO
- **Colour:** Black
- **Power Source:** Corded Electric
- **Wattage:** 30 Watts
- **Manufacturer:** MARS HYDRO
- **Size:** 4 Inch iFresh Inline Fan with Speed Controller

## Images

![Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents - Image 1](https://m.media-amazon.com/images/I/61wSGqgInNL.jpg)
![Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents - Image 2](https://m.media-amazon.com/images/I/61L41YD9s4L.jpg)
![Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents - Image 3](https://m.media-amazon.com/images/I/7130KG6ejSL.jpg)
![Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents - Image 4](https://m.media-amazon.com/images/I/61l0wmFLEhL.jpg)
![Mars Hydro iFresh 4-Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor - Inline Fan for Heating Cooling Booster, Grow Tents - Image 5](https://m.media-amazon.com/images/I/71w1ZbjSLbL.jpg)

## Frequently Bought Together

- Mars Hdyro iFresh 4 Inch Smart Inline Duct Fan with Variable Speed Controller, Temperature and Humidity Probe Sensor, 205 CFM App Control Ventilation Exhaust Fan for Grow Tents, Hydroponics
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust
- MARS HYDRO 4 Inch Carbon Filter, Inline Air Filter Odor Control with Australian Virgin Charcoal, Carbon Filter for Inline Fan, Grow Tent, Hydroponics, Pre-Filter Included, Reversible Flange

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.kr/products/749411700-mars-hydro-ifresh-4-inch-smart-inline-duct-fan-variable](https://www.desertcart.kr/products/749411700-mars-hydro-ifresh-4-inch-smart-inline-duct-fan-variable)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-10*