The fan-pad evaporative cooling system is a mainstream and cost-effective ventilation solution for commercial greenhouses, consisting of cooling pads, negative-pressure fans, water circulation and electric control systems.
Made of special cellulose material, the cooling pads feature high water absorption, moisture resistance, mildew and corrosion resistance with long service life, using water as the cooling medium. Installed oppositely in the greenhouse, the fans exhaust air to form negative pressure. Outdoor air cools down through water evaporation when passing through wet pads, delivering continuous cooling airflow inside the greenhouse.
For greenhouses over 32 meters long or growing heat-sensitive crops, 15cm thick pads are recommended; standard greenhouses adopt 10cm pads for optimal cooling performance.
Equipped with automatic shutters, the negative-pressure fans open on startup and close when shut down, preventing dust, rain, snow and reverse wind to ensure stable operation in high-humidity greenhouse environments.

Hamilton is a China-based premium manufacturer and specialized supplier of professional greenhouse materials serving global commercial horticulture projects covering glass and poly greenhouses.

Buyers pay more for premium options, or spend time vetting generic suppliers.
Against this market backdrop, Hamilton defines a new balanced standard for global greenhouse material sourcing.

Behind every thriving greenhouse is a grower with a vision. Learn how growers across the globe are transforming their climate challenges into success stories.