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Black AC Infinity inline duct fan with a remote control.
AC Infinity Cloudline H4 inline fan dimensions and specs. Black fan with silver labels.
AC Infinity inline fan in a grow tent with humidity and CO2 monitor.
AC Infinity controller displaying settings, connected to devices and a smartphone app showing environmental data.
AC Infinity speed controller with 10 fan speeds, memory, and mounting screws.
A black inline fan with red and blue airflow lines, featuring "AC INFINITY" logo.
AC Infinity Cloudline H4 inline fan in grow tent over seedling tray.
Black AC Infinity inline duct fan with a remote control.
AC Infinity Cloudline H4 inline fan dimensions and specs. Black fan with silver labels.
AC Infinity inline fan in a grow tent with humidity and CO2 monitor.
AC Infinity controller displaying settings, connected to devices and a smartphone app showing environmental data.
AC Infinity speed controller with 10 fan speeds, memory, and mounting screws.
A black inline fan with red and blue airflow lines, featuring
AC Infinity Cloudline H4 inline fan in grow tent over seedling tray.

AC Infinity Cloudline H4 Inline Fan System w/ Speed Controller - 4" Duct

Official AC Infinity Dealer Model: AI-CLH4
$99.00
starting from 0% interest financing from /mo.

Payment Options

Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
Looking to finance equipment under your corporation? Learn more about Business Financing
  • 212 CFM airflow through 4 inch ducting
  • 324 Pa of static pressure for filters
  • 18 W average power usage on a PWM EC motor
  • 2-year limited manufacturer warranty from the original date of purchase
  • View More Details

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Mon to Fri, 9am to 5pm PST

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 ventilating a humid grow tent because moisture, dust and spores can ruin a standard inline fan.
  • You are exhausting a mushroom fruiting chamber because the IP65 sealed housing resists heavy moisture.

  • The 10-speed controller dials in exact airflow for fresh air exchange and CO2 control.
  • The mixed-flow design delivers 212 CFM and 324 Pa of static pressure through filters.

  • Growers running humid chambers say the moisture seal prevents fan failures in heavy humidity.
  • Users relying on the low RPM motor say it runs quietly without disturbing their space.

AC Infinity Cloudline H4 Inline Fan System w/ Speed Controller - 4" Duct

Mushroom fruiting chambers and humid grow tents are hard on standard inline fans, and poor air exchange lets CO2 build up around your crop. The AC Infinity Cloudline H4 is sealed to IP65 against moisture, dust and spores. It moves 212 CFM through 4" ducting at just 27 dBA, keeping humidity and CO2 stable while it brings in fresh air.

The included speed controller sets airflow across 10 precise levels with a single button. A PWM-controlled EC motor lets the Cloudline H4 run smoothly at very low RPM without motor noise, drawing 18 W on average. Backup memory restores the last speed setting automatically after a power interruption.

A mixed-flow design with stator blades and dual hydrodynamic wind circles delivers 324 Pa of static pressure. That keeps air moving through filters and longer duct runs. Dual ball bearings are rated for 67,000 hours and allow horizontal or vertical mounting. The motor box detaches from its mounting bracket for cleaning. The Cloudline H4 is part of the UIS™ platform, so a compatible AC Infinity controller (sold separately) adds app control, automation and climate data over Wi-Fi.

Features

AC Infinity Cloudline H4 humidity-proof 4 inch inline fan
AC Infinity Cloudline H4 inline fan with 10-speed controller
AC Infinity Cloudline H4 IP65 inline fan for mushroom grow spaces
AC Infinity Cloudline H4 inline fan dimensions and specifications
💧
IP65 Sealed Housing

Resists moisture, dust and spores for reliable operation in fruiting chambers and humid grow rooms.

🎚️
10-Speed Controller

A single-button controller dials in exact airflow for fresh air exchange and CO2 control.

🔇
27 dBA PWM EC Motor

Runs smoothly at low RPM without motor noise, averaging just 18 W of power use.

🌀
Mixed-Flow Stator Design

Delivers 212 CFM and 324 Pa of static pressure, even through filters and restrictive ducting.

⚙️
Dual Ball Bearings

Rated for 67,000 hours and built for horizontal or vertical mounting.

🧹
Removable Motor Box

Slides out of the mounted bracket so the impeller and blades are easy to clean.

What's Included

  • 1x Cloudline H4 Inline Duct Fan
  • 1x Speed Controller
  • 1x UIS M-M Extension Cord
  • 2x Hanging Straps
  • 6x Wire Mounts
  • 1x Adhesive Wire Mount
  • 1x Wood Screws (Wall Mount)
  • 2x Controller Plate Bolts
  • 4x Duct Fan Screws
  • 4x Wall Anchors
  • 4x Hook and Loop Ties

Specifications

Specification Value
Duct Size 4"
Fan Dimensions 7.48 × 11.89 × 6.93 in. (19.0 × 30.2 × 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 2.70 × 1.37 × 0.55 in. (6.9 × 3.5 × 1.4 cm)
Power Cord Length 6 ft. (72 in.)
Airflow 212 CFM
Noise 27 dBA
Max Speed 3,000 RPM
Static Pressure 324 Pa
Speed Settings 10 levels
Motor EC motor with PWM control
Voltage 100–240V AC, 50/60 Hz
Max Power Draw 35 W
Average Power Usage 18 W
Current 0.55 A
Plug Type US plug (NEMA 5-15, Type B)
Ingress Protection IP65
Operating Humidity 35–95% RH
Operating Temperature 32–140°F
Bearings Dual ball
Mounting Positions Horizontal or vertical
L10 Life Expectancy 67,000 hours

Warranty

The AC Infinity Cloudline H4 is covered by a 2-year limited manufacturer warranty from the original date of purchase.

Frequently Asked Questions

Can the Cloudline H4 run inside a humid mushroom fruiting chamber? +

Yes. The Cloudline H4 is sealed to IP65 against moisture, dust and spores and is rated for 35–95% RH. Keep it out of standing or direct water, since submersion isn't covered by the warranty.

How do I adjust the fan speed? +

Each press of the controller's button raises the speed by one level, from 0 to 10. Pressing it at 10 returns the fan to 0. Hold the button to turn the fan off, and press it again to restart at the last speed.

Will the fan remember its speed after a power outage? +

Yes. Backup memory keeps the last speed setting when power is cut, and the fan resumes at that level once power returns.

Can I mount the Cloudline H4 vertically or upside down? +

Yes. Dual ball bearings let it mount horizontally or vertically, or hang from a pole with the included straps. If it hangs upside down, you can unscrew the motor cap and rotate it to face the right way without voiding the warranty.

Should I use it as an intake or an exhaust fan? +

It's mainly used for exhaust but works for intake too. For whole-space ventilation, place the intake at a bottom corner and mount the exhaust at the highest opposite corner, with each fan's airflow arrow pointing the right way.

Can I control the fan from the AC Infinity app? +

Yes, when it's connected to a compatible UIS controller with Wi-Fi, which is sold separately. The included speed controller handles manual speed control only.

Why am I getting low airflow even at speed 10? +

Bends in the ducting reduce CFM. Straighten your duct run and cut out as many bends as possible to get closer to the rated 212 CFM.

How do I clean the Cloudline H4? +

Unscrew the bolts on both sides and slide the motor box out of the flange bracket. Wipe the impeller, fan blades and stator blades with a damp cloth, then reinstall the motor box with its airflow arrow matching the bracket's.

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Questions About This Product?

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