AC Infinity CLOUDLINE PRO T4 4" Inline Duct Fan — 205 CFM, WiFi Smart Controller, 28 dBA

The AC Infinity CLOUDLINE PRO T4 is a quiet, energy-efficient 4” inline duct fan with smart temperature and humidity programming and WiFi app control for ventilation, grow rooms, AV closets, and odor extraction.

The CLOUDLINE PRO T4 combines a mixed-flow impeller and a PWM-controlled EC motor to deliver strong airflow while staying whisper-quiet. Built for small duct systems, this fan balances airflow, low noise (28 dBA), and durable dual-ball bearings. Its onboard controller supports timers, grow cycles, scheduling, and minimum speed limits, and you can extend control and monitoring through AC Infinity's WiFi app for remote climate automation and data review.

How does the T4 manage temperature and humidity automatically?

The built-in controller reads connected temperature and humidity sensors and triggers fan speed changes based on your programmed thresholds. You can create multi-stage responses and schedule different behaviors for day/night or grow cycles to keep conditions stable without constant manual adjustments.

• Programmable temperature and humidity setpoints with hysteresis
• Multi-stage speed control and minimum speed limit to prevent overrun
• Timers and grow-cycle presets for repeating schedules
• Local and remote monitoring through the WiFi app for data logs

How quiet and efficient is the fan in real environments?

The mixed-flow wheel and electronically commutated motor are engineered to deliver 205 CFM at a rated 28 dBA, making the T4 suitable for noise-sensitive spaces like bedrooms or AV cabinets. The PWM motor control keeps energy use low while maintaining smooth, stable speeds across the range.

• 205 CFM maximum airflow for small-to-medium duct runs
• Low acoustic profile: 28 dBA at rated conditions
• EC motor with PWM for efficient, stable power draw
• Dual-ball bearings for long life and reduced maintenance

What installation and connectivity options are available?

The T4 fits 4” ducting and ships in a compact enclosure that’s easy to mount in-line or inside a closet. For advanced control, connect to AC Infinity’s WiFi gateway to access the mobile app and enable remote scheduling, climate graphs, and automation rules from anywhere.

• Compatible with 4” flexible or rigid ductwork and common clamps
• Compact footprint: 6.9 x 11.9 x 7.4 in for tight spaces
• Onboard controller plus optional WiFi integration for remote access
• Simple wiring for sensors, timers, and external relay control

What performance and durability features should I expect?

The CLOUDLINE PRO T4 uses robust materials and a mixed-flow design to reduce sound while moving air efficiently. Dual-ball bearings extend service life and maintain consistent performance under continuous duty, making the fan suited for demanding schedules in ventilation or grow environments.

• Mixed-flow impeller for compact high-flow performance
• Dual-ball bearings reduce wear and extend operational lifespan
• Sturdy housing and mounting points for secure installation
• Clear spec list: 4" duct size, 205 CFM, 28 dBA, compact dimensions

Who is this for? The AC Infinity CLOUDLINE PRO T4 is aimed at anyone needing reliable, quiet inline ventilation with smart automation: small-scale indoor gardeners, AV technicians cooling home theater or server closets, and homeowners managing bathroom or utility exhaust. If you need precise, scheduled control and remote monitoring in a compact 4” duct fan, the T4 offers a balance of airflow, low noise, and app-enabled convenience without complex setup.