---
product_id: 306208126
title: "Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics"
brand: "mars hydro"
price: "€ 240.63"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mars Hydro"
url: https://www.desertcart.pt/products/306208126-mars-hdyro-4-inch-inline-fan-and-filter-kit-duct
store_origin: PT
region: Portugal
---

# 28 dB whisper-quiet operation Intelligent temp & humidity control 205 CFM airflow Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics

**Brand:** mars hydro
**Price:** € 240.63
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your grow game with silent power and smart control!

## Quick Answers

- **What is this?** Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics by mars hydro
- **How much does it cost?** € 240.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/306208126-mars-hdyro-4-inch-inline-fan-and-filter-kit-duct)

## 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

- • **Odor-Free Growing:** Premium Australian activated carbon filter ensures 100% odor elimination for discreet cultivation.
- • **Durable & Flexible Setup:** High-quality double-layer aluminum flex ducting with 3 clamps offers easy installation and long-lasting performance.
- • **User-Friendly & Reliable:** Intuitive push-button controls, timer, and alarm functions backed by responsive customer support keep you in control.
- • **Precision Climate Control:** Smart digital controller with real-time temp & humidity monitoring keeps your grow environment flawless.
- • **Powerful & Efficient Airflow:** 2600 RPM mixed flow fan delivers a robust 205 CFM to maximize ventilation without noise disruption.

## Overview

The Mars Hydro 4 Inch Inline Fan and Filter Kit combines a high-efficiency 205 CFM exhaust fan with a premium activated carbon filter and an intelligent temperature and humidity controller. Designed for hydroponic grow tents, it offers whisper-quiet operation at 28 dB, flexible aluminum ducting, and advanced monitoring features to optimize your indoor growing environment while eliminating odors.

## Description

desertcart.com: Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics : Patio, Lawn & Garden

Review: good quality - great product; works well
Review: Works great so far - I've only been testing this fan/filter for a few weeks, but so far I'm very happy. It moves a ton of air in my 4x4 and the fan (which I installed inside the tent) is decently quiet when cranked up to max settings. It was very easy to assemble and install, and I have no experience with these kinds of things. I did opt to seal the ducting with aluminum foil tape in addition to the hose clamps -- the tape needs to be bought separately. That said, I don't know if that's even necessary. The smart monitor is REALLY nifty. Tons of settings to automatically adjust for different scenarios when certain conditions are met. When I thought I had a problem with the monitor (it was actually just me being dumb though) customer support responded to my question in a few hours. Really can't complain! I'll try to update a year or so down the road and let you know how well it ages. In the meantime though, I'm a happy camper..

## Features

- CARBON FILTER FAN COMBO: 4-inch inline duct fan with digital controller, 4-inch carbon filter, 25ft length flex ducting, 3 duct clamps. MARS HYDRO's complete ventilation system provides adequate ventilation and prevents odors in your tent or grow room.
- TEMPERATURE AND HUMIDITY CONTROL- The digital controller with Intelligent temperature humidity controller programming, fan speed control, timer, and alarm functions. Monitor temperature and humidity in real-time, ensuring optimal growing conditions.
- POWERFUL INLINE FAN: MARS HYDRO inline duct fan housing is made of durable plastic, and the fan blades have a mixed flow design to provide active air to your growing space, the fan runs at 2600 RPM and provides 205CFM of airflow.
- FLEX DUCTING AND CLAMPS - Flexible ducting made of high-quality double-layer Aluminum film, prevent the duct from tearing, and prolong the service life. 360-degree arbitrary bending, smooth exhaust, easy to install. Includes 3 duct clamps.
- SUPERIOR ACTIVATED CARBON - Made of imported 1050+ Virgin Australian activated charcoal, delivering 100% filtered airflow, which provides better absorption and removes odor efficiently. Includes a machine washable pre-filter cloth to prevent carbon residue.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08RZ3WH7N |
| Air Flow Capacity | 205 Cubic Feet Per Minute |
| Best Sellers Rank | #264,842 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #153 in Greenhouse Ventilation Equipment |
| Brand | MARS HYDRO |
| Color | Black |
| Control Method | Push Button, Touch |
| Customer Reviews | 4.4 4.4 out of 5 stars (766) |
| Date First Available | May 27, 2021 |
| Efficiency | High Efficiency |
| Electric fan design | Exhaust Fan |
| Finish Type | Painted or Powder Coated |
| Indoor/Outdoor Usage | Indoor |
| Installation Type | installable |
| Is Cordless? | No |
| Item Weight | 3.99 pounds |
| Item model number | 4 inch inline fan kit-CP |
| Manufacturer | Mars Hydro |
| Model Name | CP |
| Noise Level | 28 Decibels |
| Number of Power Levels | 3 |
| Power Source | Corded Electric |
| Product Dimensions | 18 x 14 x 14 inches |
| Size | 4 inch/Temp CNTLR Kit |
| Special Feature | Temperature and Humidity Control |
| Speed | 2600 RPM |
| Style | 4 Inch with Digital Controller |
| Voltage | 12 Volts |
| Wattage | 50 watts |

## Product Details

- **Brand:** MARS HYDRO
- **Color:** Black
- **Electric fan design:** Exhaust Fan
- **Finish Type:** Painted or Powder Coated
- **Material:** Aluminum
- **Noise Level:** 28 Decibels
- **Power Source:** Corded Electric
- **Special Feature:** Temperature and Humidity Control
- **Style:** 4 Inch with Digital Controller
- **Wattage:** 50 watts

## Images

![Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics - Image 1](https://m.media-amazon.com/images/I/414NGE725vL.jpg)
![Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics - Image 2](https://m.media-amazon.com/images/I/41IoIznW8JL.jpg)
![Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics - Image 3](https://m.media-amazon.com/images/I/41OIXHheiRL.jpg)
![Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics - Image 4](https://m.media-amazon.com/images/I/41TwNkMc03L.jpg)
![Mars Hdyro 4 Inch Inline Fan and Filter Kit, Duct Fan with with Temperature and Humidity Controller, 205 CFM Quiet & Efficient Exhaust Fan for Grow Tents Hydroponics - Image 5](https://m.media-amazon.com/images/I/41lbWmo1BBL.jpg)

## Questions & Answers

**Q: Is this a rebranded AC infinity controller ?**
A: How many fans can plug into Controller?? The AC Infinity can control intake and exhaust fans from one controller can this one do that?

**Q: How do you get the humidity control to work? My settings have them off.**
A: hi thanks for your question. please hold the up and down button Simultaneously for a seconds, then you can setting the humidity like Temperature.
Still any problem, feel free to contact our customer.

**Q: How many amps does this pull?**
A: Hi,
Thanks for your inquiry.
The input current for the 6 inch inline fan is 0.8 amps.
Hope this helps you.
Regards,

**Q: How can I buy the controller only ? I have a fan**
A: Hi
Thank you for your inquiry!
Please contact MARS HYDRO after-sales team, they will provide you with solutions
Any questions, please feel free to contact us~

## Customer Reviews

### ⭐⭐⭐⭐⭐ good quality
*by L***S on October 31, 2025*

great product; works well

### ⭐⭐⭐⭐⭐ Works great so far
*by K***Y on April 30, 2021*

I've only been testing this fan/filter for a few weeks, but so far I'm very happy. It moves a ton of air in my 4x4 and the fan (which I installed inside the tent) is decently quiet when cranked up to max settings. It was very easy to assemble and install, and I have no experience with these kinds of things. I did opt to seal the ducting with aluminum foil tape in addition to the hose clamps -- the tape needs to be bought separately. That said, I don't know if that's even necessary. The smart monitor is REALLY nifty. Tons of settings to automatically adjust for different scenarios when certain conditions are met. When I thought I had a problem with the monitor (it was actually just me being dumb though) customer support responded to my question in a few hours. Really can't complain! I'll try to update a year or so down the road and let you know how well it ages. In the meantime though, I'm a happy camper..

### ⭐⭐⭐⭐⭐ Powerful fan with automation, serenity.
*by J***S on May 6, 2021*

This is quite possibly the best in line fan ever. Not only does it completely sustain a 3x3 tent, it literally sucks the humidity out of the whole room as well. The fact that it has a temperature and humidity sensor just sends it over the top. The mountable controller makes changing settings a breeze. The automation is a must have, I do not know how was running a fan full blast 24/7 before. Probably because there was no solution like this out there. Mars Hydro has really outdone themselves this time. Top of the line fan with a great controller. I will be ordering more for my other grow area. I can honestly say that Mars Hydro products are some of the best in the game right now. They have come a long way and continue to impress me.

## Frequently Bought Together

- MARS HYDRO 4 Inch Inline Duct Fan with Temp Controller, Exhaust Fan for Grow Tents, Hydroponics
- 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
- AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust

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**Shop now:** [https://www.desertcart.pt/products/306208126-mars-hdyro-4-inch-inline-fan-and-filter-kit-duct](https://www.desertcart.pt/products/306208126-mars-hdyro-4-inch-inline-fan-and-filter-kit-duct)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-02-01*