10 Best Quiet Inline Fans 2026 in the United States

The AC Infinity CLOUDLINE PRO S10 is a strong choice if you need a quiet and powerful inline fan, especially for tasks like ventilating grow rooms, cooling AV closets, or controlling odors. It delivers a high airflow of 1201 CFM, which means it can move a large amount of air efficiently, making it suitable for medium to large spaces or setups that require strong ventilation. The noise level is relatively low at 48 decibels, so it won’t be too disruptive in a home or indoor environment. Its EC motor is designed to be energy-efficient and quiet while generating minimal heat, which helps reduce electricity use and keeps the fan running cooler for longer life.

The AC Infinity CLOUDLINE H4 is a quiet 4-inch inline duct fan designed especially for grow tents and mushroom cultivation, where controlling humidity and airflow quietly is key. It delivers a solid airflow of 212 CFM, which is quite good for its size and suitable for small to medium grow spaces. Noise is low at 27 dBA, making it one of the quieter fans you can buy, so it won’t disrupt your environment. Its IP65 rating means it’s well protected against humidity, dust, and moisture, which is great for damp spaces like mushroom fruiting chambers.

The AC Infinity CLOUDLINE PRO T12 is a powerful 12-inch inline fan designed especially for ventilation tasks like hydroponic grow rooms, cooling equipment closets, or general airflow needs in heating and cooling setups. It delivers a strong airflow of 1604 CFM, which is quite high and suitable for larger spaces or demanding ventilation needs. The noise level is rated at 62 dB, which is moderate—not the quietest fan available, but still reasonable considering its high airflow. This means it may be noticeable in very quiet environments but should be fine in most grow or utility spaces.