AC Infinity CLOUDLINE PRO T4 Inline Duct Fan - Quiet Controlled

In this review of the CLOUDLINE PRO T4, the conclusion is straightforward: growers and hobbyists who need a quiet, programmable inline fan will appreciate the combination of airflow and smart control. The unit is built to ventilate hydroponic grow rooms, move heating and cooling, cool AV closets, and exhaust odors while staying remarkably quiet. The standout reason to buy is the integrated temperature and humidity controller with WiFi app access, which lets users automate ventilation based on real climate data rather than guesswork.

Key Features

• Smart control: The built-in temperature and humidity VPD controller lets you program dynamic schedules, timers, grow cycles, and minimum speed so ventilation responds to actual conditions.
• WiFi app integration: Remote connection to the companion app provides access to advanced programs and climate data for hands-off automation and monitoring.
• Quiet, efficient motor: The mixed flow impeller and PWM-controlled EC motor deliver up to 205 CFM at a reported noise level of 28 dBA, making the fan suitable for noise-sensitive spaces.
• Compact duct size: The 4 in duct diameter and compact footprint fit easily into tents, small rooms, and AV closets where space is limited.
• Durable bearings: Dual ball bearings improve longevity and reliability for continuous ventilation duty in grow environments.

Who It's For

The CLOUDLINE PRO T4 is aimed at indoor gardeners running small grow tents or hydroponic setups who want programmable, climate-responsive ventilation and quiet operation. It also suits hobbyists who need a compact inline fan for AV closets or small rooms where low noise and remote control matter.

Those with very large grow rooms or commercial operations should look at higher CFM models, since the 205 CFM rating is optimized for tents and smaller spaces rather than whole-room HVAC replacement. If you prefer a purely analog controller without network features, the integrated WiFi ecosystem may be more than required.

Pros & Cons

Pros

• Quiet performance that users consistently praise for low noise in occupied spaces.
• Programmable temperature and humidity control provides effective automation and precise climate management.
• Makes good airflow for its size (205 CFM) and is energy efficient thanks to the EC motor.
• Easy installation and solid build quality with dual ball bearings for durability.

Cons

• 205 CFM capacity is ideal for small grows but may be insufficient for larger rooms or commercial setups.
• Advanced features rely on the WiFi app, so users who avoid networked devices may not use the controller to its full potential.

Specifications

Our Verdict

The CLOUDLINE PRO T4 is a well-rounded inline fan for small grow tents and noise-sensitive spaces, offering strong airflow for its size, long-life bearings, and a powerful programmable controller with WiFi access. It represents good value for hobbyists who want automated climate control and quiet operation, while larger growers should select a higher CFM model.

Frequently Asked Questions

Is this fan quiet enough for a living space?
Yes; the mixed flow design and EC motor keep noise around the reported 28 dBA, which most users find unobtrusive in adjacent rooms.

Can I set schedules and thresholds without the app?
The fan includes dynamic temperature and humidity programming on the controller itself, but app access provides easier configuration and remote monitoring.

Will this move enough air for a 2 x 4 grow tent?
Yes; the 205 CFM rating is suitable for small tents and typical hydroponic setups of that size when paired with appropriate ducting and filter choices.