--- product_id: 725708333 title: "AC Infinity CLOUDLINE PRO T4 Quiet 4\" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics" brand: "ac infinity" price: "€ 29176.43" currency: EUR in_stock: true reviews_count: 6 url: https://www.desertcart.pt/products/725708333-ac-infinity-cloudline-pro-t4-quiet-4-inline-duct-fan store_origin: PT region: Portugal --- # 28 dBA ultra-quiet Intelligent temp & humidity control 205 CFM airflow AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics **Brand:** ac infinity **Price:** € 29176.43 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your airflow game with silent precision and smart control! ## Quick Answers - **What is this?** AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics by ac infinity - **How much does it cost?** € 29176.43 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/725708333-ac-infinity-cloudline-pro-t4-quiet-4-inline-duct-fan) ## Best For - ac infinity enthusiasts ## Why This Product - Trusted ac infinity brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Climate Control:** Smart temperature & humidity programming keeps your environment perfectly balanced. - • **Whisper-Quiet Performance:** At just 28 dBA, enjoy powerful airflow without the noise disruption. - • **Energy-Efficient Powerhouse:** PWM-controlled EC motor delivers maximum airflow with minimal energy use. - • **All-Inclusive Installation Kit:** Comes with sensor, power adapter, clamps, and hardware for hassle-free setup. - • **Versatile Ventilation Solution:** Ideal for hydroponics, growing tents, AV closets, and odor extraction. ## Overview The AC Infinity CLOUDLINE PRO T4 is a 4-inch inline duct fan delivering 205 CFM airflow at an ultra-quiet 28 dBA noise level. Featuring an intelligent temperature and humidity controller with programmable settings, it ensures optimal climate management for hydroponics, growing tents, and equipment cooling. Powered by an energy-efficient PWM-controlled EC motor, it includes all necessary installation hardware for quick setup. ## Description desertcart.co.jp: AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics : Home & Kitchen Review: Great - Worth the money. Review: What can I say,the best of the best ## Features - Ventilate the cultivation tent, provide heating/cooling effect, air circulation, odor extraction, and cooling AV equipment closet - Intelligent controller with temperature and humidity programming, fan speed control, timer and alarm system - Mixed-flow (combination of different airflow) and PWM controlled EC motor ensure a truly quiet and energy efficient performance - This kit includes a temperature sensor, AC power adapter, two duct clamps, and all other hardware required for installation - Duct Diameter: 4" | Dimensions: 6.9 x 11.9 x 7.4" | Airflow: 205 CFM | Noise: 28 dBA | Bearing: Dual Ball ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06ZXWN3BG | | Air Flow Capacity | 205 Cubic Feet Per Minute | | Amazon Bestseller | #909,001 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #30,716 in Heating, Cooling & Air Quality | | Blade Length | 74 Inches | | Brand Name | AC Infinity | | Cable Length | 144 インチ | | Color | black | | Control Method | App | | Controller Type | Button Control | | Customer Reviews | 4.6 4.6 out of 5 stars (6,781) | | Electric Fan Design | Exhaust Fan | | Included Components | Cord | | Indoor Outdoor Usage | Outdoor | | Item Dimensions D x W x H | 30.3D x 18.8W x 18.8H cm | | Item Weight | 0.01 Ounces | | Manufacturer | AC Infinity | | Model Number | AI-CLT4 | | Mounting Type | Rack Mount | | Noise Level | 28 Decibels | | Number of Blades | 10 | | Number of Speeds | 10 | | Power Source | Corded Electric | | Recommended Uses For Product | Air Circulation | | Room Type | Bathroom | | Special Features | Waterproof | | Style | Industrial | | UPC | 854759004785 | | Voltage | 120 Volts | | Wattage | 21 W | ## Product Details - **Brand:** AC Infinity - **Color:** black - **Electric fan design:** Exhaust Fan - **Mounting Type:** Rack Mount - **Power Source:** Corded Electric - **Product Dimensions:** 30.3D x 18.8W x 18.8H cm - **Recommended Uses For Product:** Air Circulation - **Room Type:** Bathroom - **Special Feature:** Waterproof - **Style:** Industrial ## Images ![AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics - Image 1](https://m.media-amazon.com/images/I/51X1jHo681L.jpg) ![AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics - Image 2](https://m.media-amazon.com/images/I/71cik2o8hxL.jpg) ![AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics - Image 3](https://m.media-amazon.com/images/I/71Bmh+hJxgL.jpg) ![AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics - Image 4](https://m.media-amazon.com/images/I/61B8EwuR7nL.jpg) ![AC Infinity CLOUDLINE PRO T4 Quiet 4" Inline Duct Fan with Temperature Humidity Controller Heating and Cooling Fan Promotes Cooling Growing Tent Hydroponics - Image 5](https://m.media-amazon.com/images/I/71CDBlYtPJL.jpg) ## Questions & Answers **Q: What is the CFM, wattage, and decibel level?** A: To help alleviate confusion, wanted to chime in here to say the answer posted to this question is outdated from an OLD model. This product has had two improvements since... one is that the fan is now running on a 24v motor, and the CFM is now measured at 205 (improved from a 12v motor at 152cfm). As for noise, I don't think the decibel rating has changed as it is still quiet. The second improvement is much more recent (Decemenr 2018) and was made to the controller unit which now includes humidity control as well as temperature. **Q: Would it work to install this fan through the house wall so that I can bring the cool, outdoor evening air indoors without having the windows open.** A: I've had this idea for 20 years and just never got around to it. First, this is about 200 cfm. Is 200 cfm enough to cause a temp difference. You would think so especially when the temp outside is 64 degrees and the temp inside is 75 degrees. I had a window fan and I was trying to draw cold air from one side of the house by setting the window fan to blow air outside on the otherside of the house. It was a double fan. I had all the windows open about 4 inches. I could not cool my house down. I personally don't want to go to sleep with all the windows in my house open. This little 4inch fan my work ok in one room provided you were circulating the air correctly. Pumping air into a room creates positive pressure so you would have to vent that room to allow the air to leave that room at the same time. Two or three of these or maybe four depending on the size of the house could possibly allow one to circulate enough air to cause a significant temp change. If not then there are larger units. My plan is to use several 8 inch units placed in a central location in the attic and create vents in each room connected to the outside and then to the central fan which would exhaust to the outside or simply in the attic which is vented to the outside. **Q: Can this fan be used to draw radon gas out of my basement if exhasted outside?** A: I am using this for a radon fan. The radon numbers were in the 60s before the fan. After installing it, we have dropped down to 2-7 range. I'm going to add a second one and forgot get the binders to the same area of 0-2. **Q: Can the T4 be mounted vertically?** A: Yes. While the instructions don't make it very clear, you definitely can. Mine has been mounted vertically for two months and working perfectly. I use it to cool an entertainment cabinet. In the Product Description at the link below, it says, "The motor houses dual ball bearings rated at 67,000 hours which allows the duct fan unit to be mounted in any direction." https://www.acinfinity.com/component-cooling/duct-fan-systems/cloudline-t4-quiet-inline-mixed-flow-duct-fan-system-4-inch/#product-description ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great *by T***N on March 18, 2023* Worth the money. ### ⭐⭐⭐⭐⭐ Review *by M***N on June 1, 2024* What can I say,the best of the best ### ⭐⭐⭐⭐⭐ Review *by P***O on October 22, 2025* La base per un sistema affidabile, scalabile a piacimento anche con luci di marca diversa, meglio la versione a 6 porte. Acquista pratica con l'app android va benissimo. Consigliatissimo ## Frequently Bought Together - AC Infinity CLOUDLINE PRO T4, Quiet 4” Inline Duct Fan with Temperature Humidity VPD Controller, WiFi Integrated App Control - Ventilation Exhaust Fan for Heating Cooling, Grow Tents, Hydroponics - AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust - AC Infinity Air Carbon Filter 4" with Premium Australian Virgin Charcoal, for Inline Duct Fan, Odor Control, Hydroponics, Grow Rooms --- ## 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.pt/products/725708333-ac-infinity-cloudline-pro-t4-quiet-4-inline-duct-fan](https://www.desertcart.pt/products/725708333-ac-infinity-cloudline-pro-t4-quiet-4-inline-duct-fan) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-22*