Active Air Fans, Dehumidifiers & Climate Equipment
Active Air is Hydrofarm's dedicated grow room climate brand, producing fans, dehumidifiers, humidifiers, and air conditioning equipment specifically designed for indoor growing applications. Active Air products are manufactured to meet the duty cycle and environmental demands of grow rooms -- continuous operation in high-humidity, high-temperature conditions with plant particulate in the air -- rather than the intermittent use that most consumer climate equipment is designed for. For growers who want reliable grow-room-specific equipment at accessible price points within the established Hydrofarm product ecosystem, Active Air covers all the major climate categories.
Active Air Fans
Active Air produces inline duct fans, clip-on fans, and oscillating stand fans across the standard size range for grow room ventilation. Their inline fans (4-inch through 10-inch) are rated for continuous operation in humid growing environments and are compatible with standard carbon filters for complete exhaust ventilation systems. Browse the full fans and blowers collection for Active Air inline and oscillating fan options alongside Can-Fan, Hurricane, and other qualified brands.
Active Air Dehumidifiers & Humidifiers
Active Air dehumidifiers are grow-room-rated units designed to deliver their stated pint capacity at the 80 degrees F conditions of an active grow room -- not at the 65 degrees F AHAM standard that inflates consumer dehumidifier ratings. Available in configurations from 70-pint portable units for tent and small room use through larger-capacity models for dedicated rooms. Active Air humidifiers use ultrasonic technology for cool-mist humidity addition in propagation and vegetative rooms where elevated RH is required. For larger commercial dehumidification requirements above 200 pints, Quest and Anden commercial overhead units are the appropriate step-up. Fast shipping.
Active Air FAQ
What is the difference between Active Air and other grow room fan brands?
Active Air is Hydrofarm's own grow room climate brand -- covering fans, dehumidifiers, and humidifiers in a single product family designed specifically for growing environments. Can-Fan is the long-established professional inline fan benchmark with the strongest reputation for CFM rating accuracy and continuous-duty reliability. Hurricane produces reliable fans at competitive price points across all categories. AC Infinity has become popular for their quiet EC motor technology and integrated speed control. Active Air occupies the reliable, accessible tier within the Hydrofarm product ecosystem -- appropriate for growers already using Hydrofarm (Active Aqua) equipment who want equipment compatibility within one brand family.
Are Active Air dehumidifiers as good as Quest?
Active Air dehumidifiers are grow-room-rated and perform as advertised in grow room temperature conditions -- a meaningful step above consumer dehumidifiers that are rated at AHAM standard cool temperatures. Quest is the category premium brand with the most commercial track record, Energy Star certification, and the widest service network for commercial operations where downtime is a production cost. Active Air provides adequate grow-room-specific performance at a lower price point -- appropriate for serious hobby growers and smaller commercial operations. For large commercial facilities running 500+ sq ft continuously, Quest is the more reliable long-term investment.
What size Active Air inline fan do I need for a grow tent?
Select based on tent volume and add 25-30% for carbon filter resistance. A 4x4x7 ft tent (112 cu ft) needs 140-150 CFM at the filter -- select an Active Air 4-inch fan rated 170+ CFM or 6-inch for headroom. A 4x8x7 ft tent (224 cu ft) needs 280-300 CFM at filter -- select a 6-inch fan. Use our Ventilation & Carbon Filter Sizing Calculator for a precise CFM recommendation based on your exact dimensions.
Does Active Air make a dehumidifier with a built-in humidistat?
Yes -- Active Air dehumidifiers include an integrated humidistat that allows setting a target RH percentage. The unit cycles on when RH rises above the setpoint and off when target is reached. For more precise RH management, connect to an external humidity controller (Titan Controls, Autopilot, or TrolMaster Hydro-X) using the dehumidifier's power inlet -- the controller's sensor provides better accuracy than the dehumidifier's built-in sensor, which can give locally high readings when positioned near plant transpiration zones.
Can Active Air equipment handle 24-hour continuous operation?
Yes -- Active Air fans and dehumidifiers are designed for the continuous operation demands of grow rooms, not the intermittent residential use that consumer equipment is built for. Their inline fans are rated for continuous duty at full load; their dehumidifiers are designed to run indefinitely on continuous operation. Check the specific model's documentation for duty cycle ratings. For commercial facilities running multiple units 24/7 across multiple rooms, Quest's commercial overhead dehumidifiers and Can-Fan's inline fans are the higher-reliability alternatives if maximum longevity under sustained commercial load is the priority.
