Humidity Controllers for Grow Rooms & Greenhouses
A humidity controller automates the management of relative humidity in your growing environment — continuously monitoring humidity with a sensor and triggering dehumidifiers or humidifiers to maintain a target setpoint without manual intervention. Consistent humidity management is one of the most impactful environmental controls available for both plant health and disease prevention.
Single-Stage vs. Dual-Stage Humidity Controllers
Single-stage humidity controllers manage either a dehumidifier (to reduce humidity when it rises above setpoint) or a humidifier (to add moisture when humidity drops below setpoint) — but not both from the same unit. Dual-stage humidity controllers manage both dehumidification and humidification from a single device, activating the appropriate piece of equipment depending on whether current humidity is above or below the target range. Dual-stage controllers are more practical for growing environments that experience both excess and insufficient humidity at different stages of the crop cycle or across seasons.
Integration with Multi-Function Controllers
Standalone humidity controllers are a cost-effective starting point for growers who want automated humidity management without investing in a full multi-function environmental controller. For growers who want to manage temperature, humidity, CO2, and lighting from a single platform, a multi-function grow room controller from TrolMaster integrates humidity management alongside all other environmental parameters with app-based remote monitoring. Use our VPD Calculator to set appropriate humidity targets for each growth stage before configuring your controller setpoints.
Browse all environment controllers, explore dehumidifiers and humidifiers to pair with your controller. Expert support available.
