--- product_id: 639420006 title: "AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics" brand: "ac infinity" price: "₹ 30918" currency: INR in_stock: true reviews_count: 5 category: "Ac Infinity" url: https://www.desertcart.in/products/639420006-ac-infinity-cloudline-t4-quiet-4-inline-duct-fan-temperature store_origin: IN region: India --- # 28 dBA whisper-quiet Temp & humidity smart control 205 CFM airflow AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics **Brand:** ac infinity **Price:** ₹ 30918 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your airflow game with silent, smart ventilation that works as hard as you do. ## Quick Answers - **What is this?** AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics by ac infinity - **How much does it cost?** ₹ 30918 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/639420006-ac-infinity-cloudline-t4-quiet-4-inline-duct-fan-temperature) ## 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 - • **Plug & Play Setup:** Includes all mounting hardware and wired probe for fast, hassle-free installation. - • **Smart & Customizable:** Touch controller with app control, 10 speeds, timers, and alarms for ultimate convenience. - • **Versatile Ventilation:** Ideal for hydroponics, grow tents, AV cabinets, and odor elimination—one fan, endless uses. - • **Whisper-Quiet Efficiency:** Mixed-flow design with EC motor delivers powerful airflow at a barely-there 28 dBA noise level. - • **Precision Climate Control:** Intelligent temp & humidity programming keeps your environment perfectly balanced. ## Overview The AC Infinity CLOUDLINE T4 is a 4-inch inline duct fan engineered for professional-grade ventilation. Featuring a powerful 205 CFM airflow and ultra-quiet 28 dBA operation, it integrates an intelligent temperature and humidity controller with app connectivity. Designed for hydroponic grow rooms, AV cabinets, and odor control, this energy-efficient fan offers 10 speed settings, timer, and alarm functions, all in a sleek, easy-to-install package made in the USA. ## Description AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics : desertcart.in: Home & Kitchen Review: Facile da gestire, scalabile a piacimento anche con luci di altra marca - 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 Review: One of my best buys! - This is an amazing deal. The controller quality is way beyond expectations. Its extremely rugged with excellent buttons and display. Fan has a special plug not a regular plug that inserts into the controller and the controller plugs in the wall. Extremely long wires and connectors are of high quality so this is built to last. You can mount the controller in the tent unlit or on the wall 20 feet away with 3 brightness levels. The temperature probe is very accurate and you can see the temperate fluctuate as the fan speeds change. Controller has six fan speeds and it can automatically change speeds. As someone else said this device alone is worth the $110. Not going to rate the fan until I have used it for awhile - but new it is also really nice. It is very quiet and powerful and certainly pulls good on a carbon filter. I have mine mounted vertically with 1 rigid 4 foot length of duct coming out the top of the tent like a chimney to max out the CFM. If you see no updates everything is going great. For now, I am extremely happy and would be if it was twice the price. UPDATE: 5 Weeks on 24/7 still excellent. Decided to just set it to the 3rd speed and it sucks in the walls of my tent. UPDATE: Totally stopped working a few weeks later so I returned it and replaced it with the same unit. Have had no problem with second unit for 6 months now. This fan is quiet but I would not pay too much of a premium for this as other fans much lower priced will work just as well. ## Features - Designed to ventilate hydroponic grow rooms, transfer heating or cooling, cool audio and video equipment cabinets, and eliminate odors. - Intelligent controller with temperature and humidity programming, fan speed control, timer and alarm system. - Mixed-flow design combined with a PWM (Pulse Width Modulation) controlled DC or EC motor for truly quiet and energy efficient performance. - The kit also includes 1 wired probe, 1 AC power plug, 2 duct clamps and the necessary mounting material. - Duct Size: 4" Dimensions: 17.5 x 30.2 x 18.8 cm. Air flow: 5.8m3/minute Noise: 28dBA Bearings: Double ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06ZXWN3BG | | Air Flow Capacity | 205 Cubic Feet Per Minute | | Best Sellers Rank | #1,186,652 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,423 in Exhaust Fans | | Brand | AC Infinity | | Brand Name | AC Infinity | | Colour | Black | | Control Method | Touch | | Controller Type | App Control | | Customer Reviews | 4.7 out of 5 stars 7,217 Reviews | | Electric Fan Design | Exhaust Fan | | Electric fan design | Exhaust Fan | | Finish Type | Powder Coated | | Form Factor | Inline Duct Fan | | Included Components | Cord | | Indoor Outdoor Usage | Indoor | | Installation Type | inline_duct | | Is Product Cordless | No | | Item Dimensions D x W x H | 17.5D x 18.8W x 30.2H Centimeters | | Item Weight | 0.01 Ounces | | Main Power Connector Type | Standard Wall Plug | | Manufacture Year | 2020 | | Manufacturer | AC Infinity | | Model Name | AI-CLT4 | | Model Number | AI-CLT4 | | Motor Type | EC motor | | Mounting Type | Inline Duct Mount | | Noise Level | 28 Decibels | | Number Of Speeds | 10 | | Number of Blades | 10 | | Number of Packs | 1 | | Number of Power Levels | 8 | | Part Number | ACAICLT4 | | Product Dimensions | 17.5D x 18.8W x 30.2H Centimeters | | Recommended Uses For Product | Cooling, Exhausting, Ventilating | | Reusability | Rechargeable | | Room Type | Bathroom, Kitchen | | Size | 4 inches | | Special Features | Temperature Humidity Controller | | Specification Met | CE, ETL, RoHS | | Speed | 2800 RPM | | Style | Modern | | Style Name | Modern | | UPC | 854759004785 | | Voltage | 120 Volts | | Wattage | 21 Watts | ## Product Details - **Brand:** AC Infinity - **Colour:** Black - **Electric fan design:** Exhaust Fan - **Mounting Type:** Inline Duct Mount - **Power Source:** Corded Electric - **Product Dimensions:** 17.5D x 18.8W x 30.2H Centimeters - **Recommended Uses For Product:** Cooling, Exhausting, Ventilating - **Room Type:** Bathroom, Kitchen - **Special Feature:** Temperature Humidity Controller - **Style:** Modern ## Images ![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 1](https://m.media-amazon.com/images/I/61G8jiWednL.jpg) ![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 2](https://m.media-amazon.com/images/I/71CrnIX0DzL.jpg) ![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 3](https://m.media-amazon.com/images/I/61i2wGg6ZIL.jpg) ![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 4](https://m.media-amazon.com/images/I/61SmKNELlcL.jpg) ![AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics - Image 5](https://m.media-amazon.com/images/I/71Rsp9VjkXL.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 ### ⭐⭐⭐⭐⭐ Facile da gestire, scalabile a piacimento anche con luci di altra marca *by P***O on 22 October 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 ### ⭐⭐⭐⭐⭐ One of my best buys! *by P***L on 13 April 2018* This is an amazing deal. The controller quality is way beyond expectations. Its extremely rugged with excellent buttons and display. Fan has a special plug not a regular plug that inserts into the controller and the controller plugs in the wall. Extremely long wires and connectors are of high quality so this is built to last. You can mount the controller in the tent unlit or on the wall 20 feet away with 3 brightness levels. The temperature probe is very accurate and you can see the temperate fluctuate as the fan speeds change. Controller has six fan speeds and it can automatically change speeds. As someone else said this device alone is worth the $110. Not going to rate the fan until I have used it for awhile - but new it is also really nice. It is very quiet and powerful and certainly pulls good on a carbon filter. I have mine mounted vertically with 1 rigid 4 foot length of duct coming out the top of the tent like a chimney to max out the CFM. If you see no updates everything is going great. For now, I am extremely happy and would be if it was twice the price. UPDATE: 5 Weeks on 24/7 still excellent. Decided to just set it to the 3rd speed and it sucks in the walls of my tent. UPDATE: Totally stopped working a few weeks later so I returned it and replaced it with the same unit. Have had no problem with second unit for 6 months now. This fan is quiet but I would not pay too much of a premium for this as other fans much lower priced will work just as well. ### ⭐⭐⭐⭐⭐ Nice but a new controller is a kick in the teeth. *by C***O on 9 May 2021* Excellent quiet, very quiet fan. Lovely bit of kit. But it's controller can be very dodgy and common problems with the humidity and temp controller run together, of it turning extract off if humidity low, both fans in fact, or start stopping, etc. So they released, hey presto, and NEW Fan Controller, because this one is pants. Get the S4 instead and an S6, or 2 s6Cloudlines if you have the room, and buy the new smart controller. Sorry I got the T4 but i needed a silent fan, so just run it dumb. There were no S4s as theyre as rare as rocking horse poo poo. ## 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.in/products/639420006-ac-infinity-cloudline-t4-quiet-4-inline-duct-fan-temperature](https://www.desertcart.in/products/639420006-ac-infinity-cloudline-t4-quiet-4-inline-duct-fan-temperature) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-09-30*