AC Infinity CLOUDLINE A4 duct fan close-up showing quiet operation.
AC Infinity CLOUDLINE A4 EC motor close-up highlighting efficiency.
AC Infinity CLOUDLINE A4 wired 10-speed controller for flexible tuning.
AC Infinity CLOUDLINE A4 4-inch duct connection for easy install.
AC Infinity CLOUDLINE A4 airflow 165 CFM in a compact unit.
AC Infinity CLOUDLINE A4 29 dBA for near-silent operation.
AC Infinity CLOUDLINE A4 versatile for grow tents and HVAC projects.

AC Infinity

AC Infinity CLOUDLINE A4: Quiet 4” Inline Duct Fan with EC Motor | 165 CFM

High-performance patio lawn and garden made for confident daily results

$111.21

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Why customers choose PatioZora Garden

Overview

The AC Infinity CLOUDLINE A4 is a compact, whisper-quiet inline duct fan designed to move air efficiently in tight spaces. Its mixed-flow design paired with an EC-powered motor delivers steady airflow with low energy use, making it a practical choice for growers, technicians, and space-conscious setups that value discretion and reliability.

Key benefits

  • Quiet operation at 29 dBA, ideal for grow tents, studios, and workrooms without distraction.
  • 165 CFM of airflow with 4” ducting for common grow tent and equipment room configurations.
  • Energy-efficient performance thanks to the EC motor and mixed-flow design, which may reduce running costs over time.
  • Durable dual-ball bearings designed for long-running use in demanding environments.
  • Wired 10-speed controller included; compatible with CLOUDLINE smart controllers for scalable tuning.

Real-world use scenarios

Use the A4 to exhaust stale air from a grow tent while pulling in fresh air from adjacent spaces, helping manage temperature and humidity. In hydroponics rooms, steady airflow supports even environmental conditions around grow beds and lighting gear. The compact chassis also suits AV closets, basements, or small mechanical rooms where quiet ventilation matters.

Installation and specs

  • Duct size: 4 inches.
  • Dimensions: 6.9 x 11.9 x 7.4 inches.
  • Airflow: 165 CFM; Noise: 29 dBA.
  • Bearing type: Dual Ball for durability and smooth operation.
  • Includes a wired 10-speed controller; compatible with CLOUDLINE smart controllers for expanded control.

Smart control and compatibility

Designed to integrate seamlessly with the CLOUDLINE ecosystem, the A4 enables remote speed adjustment and can be paired with additional climate control devices for a cohesive setup. This makes it a versatile choice for evolving ventilation needs.

FAQ

Q: What can the AC Infinity CLOUDLINE A4 improve in my space?

A: It offers quiet, energy-efficient ventilation for grow tents, hydroponics, and small cooling tasks.

Q: Does the A4 come with a controller?

A: Yes. It includes a wired 10-speed controller and is compatible with CLOUDLINE smart controllers.

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