Cooling Pads in Greenhouse Climate Control
Evaporative cooling pads cool greenhouse intake air as water evaporates across a corrugated media wall. Used with exhaust fans, they form a pad-and-fan system that cuts peak summer temperatures without mechanical refrigeration. ClimaSpan helps size pad face area and thickness from greenhouse volume and local wet-bulb conditions, then quotes pads with matched fans by project.
Equipment selection and scope are confirmed in a written quote after we review your greenhouse size, layout, crop and climate. We do not publish public prices or catalogue-only spec sheets on these pages.
Role in the climate system
- Exhaust fans pull outside air through a wetted corrugated pad wall.
- As water evaporates, the temperature of the air entering the crop zone drops.
- Pad face area and thickness are matched to fan capacity and local wet-bulb conditions.
- Pad pumps can be staged by the climate controller with the exhaust fans.
Selection points
- Send greenhouse dimensions, fan plan (if any) and water quality notes.
- Common greenhouse pads are about 100–150 mm thick; thicker pads add contact time when face velocity is controlled — we confirm thickness after reviewing climate data and fan capacity.
- Hard or high-mineral water can scale pads; filtration or treatment is often discussed at quote time.
- Pads can be quoted alone or with matched exhaust and circulation fans.
How it pairs with structure and crops
- Install opposite the exhaust-fan wall in commercial and research greenhouses.
- Most effective in hot, dry or moderately humid climates.
- Circulation fans help move cooled air evenly through dense canopies and bench crops.
- Product details: see the greenhouse evaporative cooling pads page.
Related greenhouse systems
Cooling Pads product page
Full evaporative pad overview.
Exhaust Fans (system)
Negative pressure that pulls air through the pads.
Circulation Fans (system)
Distribute cooled air.
Climate Control hub
Full climate package.
Frequently asked questions
How do evaporative cooling pads work in a greenhouse?
Exhaust fans pull outside air through a wetted pad wall. As water evaporates, the air temperature drops before it enters the crop zone. Effectiveness depends on outdoor wet-bulb temperature, pad thickness and face velocity.
What pad thickness should I choose?
Common greenhouse pads are about 100–150 mm thick. Thicker pads add contact time and cooling when face velocity is controlled. We confirm thickness after reviewing your climate data and fan capacity.
Can pads be ordered with matching exhaust fans?
Yes. ClimaSpan quotes evaporative pads together with exhaust and circulation fans so airflow, pad area and static pressure stay matched.
Where is the product page?
See the greenhouse evaporative cooling pads product page for the equipment overview.