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AC Infinity Cloudline T4 inline fan with controller and phone app displays.
AC Infinity Cloudline T4 inline fan with specs: 226 CFM airflow, 26 dBA noise, 21W power, 4-inch duct size.
AC Infinity Cloudline T controller and smartphone app displaying climate controls, charts, and data.
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AC Infinity Cloudline T4 inline fan with controller and phone app displays.
AC Infinity Cloudline T4 inline fan with specs: 226 CFM airflow, 26 dBA noise, 21W power, 4-inch duct size.
AC Infinity Cloudline T controller and smartphone app displaying climate controls, charts, and data.
3D rendering of a quiet, energy-efficient inline duct fan with red inbound airflow and blue outbound airflow.
AC Infinity controller & app display for smart environmental control. Features AI settings & device monitoring.
AC Infinity inline duct fan with carbon filter, digital controller, and plant icons for EC motor, effortless airflow, growers.
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AC Infinity Cloudline T4 Inline Fan System w/ Smart Controller - 4" Duct

Official AC Infinity Dealer Model: AI-CLT4
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Call (360) 800-5535
  • Free Shipping On Most Items*To the lower 48
  • Transparent PricingBacked w/ price match guarantee
  • 4.8/5 Top Quality Store on Google
  • Secure CheckoutSSL encrypted payments

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THROUGH THE Cultivator's LENS Highlights

  • You are replacing a noisy tent fan because the smart controller reads targets and ramps speed automatically.
  • You are managing small tent environments because the mixed flow impeller keeps airflow strong against carbon filters.

  • The smart controller reads a 12 ft probe and ramps the fan up or down to hold your targets.
  • Dual ball bearings rated for 67,000 hours allow horizontal or vertical mounting.

  • Growers running sealed tents say automating temperature and humidity triggers stopped the constant swing every time lights switch.
  • Users monitoring tents from their phone say remote alerts and climate data eliminated the need to constantly check the room.

AC Infinity Cloudline T4 Inline Fan System w/ Smart Controller - 4" Duct

In a small tent, temperature and humidity swing every time the lights switch on or off, and a fan running at one fixed speed either can't keep up or overcools the space. The AC Infinity Cloudline T4 adjusts itself: its included smart controller reads a 12 ft temperature and humidity probe and ramps the fan up or down to hold your targets. It moves up to 226 CFM through 4" ducting at just 26 dBA.

A PWM-controlled EC motor drives a mixed-flow impeller with stator blades, keeping airflow strong under 223 Pa of static pressure when pulling through a carbon filter or long duct run. Use it to exhaust hot, odorous air or bring fresh air in. Dual ball bearings rated for 67,000 hours allow horizontal or vertical mounting. The IP44-rated housing resists dust and moisture, and the motor box detaches from the mounting frame for cleaning.

The included Controller 69 Pro runs Auto mode (temperature and humidity triggers), VPD mode, timers, cycles and schedules, with minimum baseline speeds. Over Bluetooth or 2.4 GHz Wi-Fi it unlocks app control, alerts and climate data. It has four UIS ports, so you can add a grow light or clip fan to the same program. For a larger setup, the Smart Controller 69 Pro Plus expands to eight devices within the AC Infinity UIS platform.

Features

AC Infinity Cloudline T4 inline fan with smart controller
AC Infinity Cloudline T4 mixed-flow inline fan design
AC Infinity Cloudline T4 smart controller climate programming
AC Infinity Cloudline T4 inline fan for grow tent ventilation
🧠
Smart Climate Control

Temperature, humidity, and VPD triggers adjust fan speed automatically from a 12 ft probe.

📱
Bluetooth + Wi-Fi App

Remote control, alerts, schedules, and climate data in the AC Infinity app.

🤫
Quiet PWM EC Motor

Runs at 26 dBA with smooth, efficient speed control down to very low RPM.

💨
226 CFM Mixed-Flow

Stator blades hold airflow under 223 Pa of static pressure from filters and ducting.

🔌
4 UIS Ports

Add a grow light, clip fan, or second inline fan to the same controller.

🔧
IP44 & Easy Cleaning

Dust- and moisture-resistant housing with a motor box that detaches for cleaning.

What's Included

  • 1x Cloudline T4 Inline Duct Fan
  • 1x Smart Controller (Controller 69 Pro)
  • 1x Temperature & Humidity Sensor Probe, 12 ft.
  • 1x UIS M-M Cord, 10 ft.
  • 2x Duct Clamps
  • 2x Hanging Straps
  • 4x Duct Fan Screw Sets
  • 4x Wall Anchors
  • 2x Wood Screws (Wall Mount)
  • 2x Controller Plate Bolts
  • 6x Wire Mounts
  • 1x Adhesive Wire Mount
  • 4x Hook and Loop Ties

Specifications

Specification Value
Duct Size 4"
Fan Dimensions 7.40 × 11.93 × 6.93 in. (18.8 × 30.3 × 17.6 cm)
Mounting Hole-to-Hole Distance 3.15 × 2.36 in. (8.0 × 6.0 cm)
Screw Hole Diameter 0.197 in. (0.5 cm)
Controller Dimensions 3.31 × 3.82 in. (8.4 × 9.7 cm)
Cord Length to Controller 120 in. (10 ft.)
Sensor Probe Length 144 in. (12 ft.)
Power Cord Length 96 in. (8 ft.)
Airflow 226 CFM
Noise 26 dBA
Max Speed 2800 RPM
Static Pressure 223 Pa
Controller Controller 69 Pro (Temperature, Humidity & VPD)
Max Power Draw 28 W
Average Power Usage 21 W
Voltage 100–240V AC
Frequency 50/60 Hz
Current 0.4 A
Power Connector Type US Plug (NEMA 5-15 Type B)
Ingress Protection IP44
Fan Bearings Dual Ball
Mounting Positions Horizontal or Vertical
Operating Humidity 35 to 85% RH
Operating Temperature 32 to 140°F
L10 Life Expectancy 67,000 Hours

Warranty

The AC Infinity Cloudline T4 is covered by a 2-year limited manufacturer warranty from the original date of purchase.

Frequently Asked Questions

What's the difference between the T4 and the Cloudline S4? +

The fan unit is the same; the controller is the difference. The Cloudline S4 includes a 10-speed manual controller, while the T4 ships with a smart controller and 12 ft sensor probe that automate the fan by temperature, humidity, VPD, timers and schedules, with app control.

Can I control this fan with my phone? +

Yes. The included controller connects to the AC Infinity app over Bluetooth or 2.4 GHz Wi-Fi, giving you remote control, alerts, advanced programs and historical climate data from anywhere.

How does the smart controller automate the fan? +

The 12 ft probe reads temperature and humidity inside your tent. In Auto mode, the controller ramps fan speed up when conditions pass your high triggers and back down when they recover. VPD mode targets a vapor pressure deficit range, and timer, cycle and schedule modes cover time-based ventilation. You can set a minimum speed so the fan never fully stops.

How loud is the Cloudline T4? +

The Cloudline T4 is rated at 26 dBA. Because the smart controller only ramps it up when conditions demand, it often runs at lower, quieter speeds through much of the day.

Can I connect other devices to the controller? +

Yes. The controller has four UIS ports, so you can add AC Infinity grow lights, clip fans or a second inline fan and program each independently. Note that EC-motor fans like the T4 cannot be daisy-chained with DC-motor models.

What other equipment do I need to install this fan? +

The kit includes the fan, smart controller, probe, duct clamps, hanging straps and mounting hardware. You'll need 4" ducting, such as AC Infinity Flexible Four-Layer Ducting, plus a 4" carbon filter for odor control. Point the fan's airflow arrow toward your tent for intake or away from it for exhaust.

Where can I learn more about setting up grow tent ventilation? +

For a full overview, check out our guide on AC Infinity grow tents and air filter kits, which covers ventilation principles and setup tips in detail.

Happy To Help

Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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