Equipment & systems · Ventilation & climate control
Evaporative cooling pads
Wetted pad systems that cool incoming tunnel air by evaporation. Effectiveness depends on outside humidity, pad area and air speed, so sizing starts from the site's design climate.
Quick answer
Evaporative cooling pads: Cooling incoming air in tunnel-ventilated houses. In a request, state design temperature and humidity; pad area, thickness and frame; water quality and recirculation. HatchMatch reviews it and contacts suppliers for you; supplier, availability, price and origin are confirmed per request.
Intended use: Cooling incoming air in tunnel-ventilated houses.
General facts
About this type of product or system in general — not about any supplier.
- Application
- Tunnel-ventilated houses in hot climates
- Indicative HS heading
- 8479.60 (evaporative air coolers) — indicative six-digit heading; the national tariff line and any ruling decide[1]
Buyer guide: maturity, trade-offs and upkeep
General considerations for this type of system, from the sources on this page — not a review of any supplier or model.
Established technologyEstablished cooling method for hot climates.
Advantages
- Large temperature drop in dry heat
- Low energy compared with mechanical cooling
Drawbacks
- Effect falls in humid weather
- Adds humidity, which affects heat stress and litter
Maintenance
- Water treatment and bleed-off
- Pad cleaning and replacement
- Pump and distribution checks
Energy and sustainability questions
- Water use rises with heat load — ask for consumption at design conditions
Limitations
- Must be sized together with tunnel fans and inlet area
Regulatory notes
- Welfare rules judge outcomes (panting, litter, mortality), not equipment alone (WOAH ch. 7.10)
Where manufacturers are based: Usually supplied with ventilation packages; manufacturing origin to confirm per request.
Configuration choices
Options to decide before quoting; no supplier specification is verified on this page.
- Pad thickness and area
- Recirculating or bleed-off water system
- Pad frame and protective cover
Project questions to answer first
- What are the design temperature and humidity?
- What is the water source and quality?
- How do the pads match the tunnel fan capacity?
What to specify in your request
- Design temperature and humidity
- Pad area, thickness and frame
- Water quality and recirculation
- Integration with the tunnel fans
Documents buyers commonly ask for
Where the product and route require them. Requirements differ by product and country; there is no single checklist.
- Pad performance data with test conditions
- Water and maintenance requirements
Who does what
- You (buyer)
- State your specification, destination and documents; you keep your own import permissions and due diligence.
- HatchMatch
- Reviews the request and contacts suppliers on your behalf. It does not produce, sell or export the goods.
- Producers and suppliers
- Respond through HatchMatch and are responsible for their products meeting the rules that apply.
Related guides
Related categories
Sources and references
Published standards and reference sources for context — not endorsements and not evidence about any supplier.
- World Customs Organization: HS Nomenclature 2022 edition (checked 2026-10-23)
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