What is Evaporative Cooling?

How Evaporative Cooling Works

Evaporative cooling — also known as adiabatic cooling — uses the natural process of water evaporation to lower air temperature. Inside an evaporative cooler, water circulates through wet media pads while a fan draws warm air through them. As the water evaporates, it absorbs heat from the air, releasing cooler, moister air back into the environment. In this system, water functions as the refrigerant, offering an energy-efficient and environmentally friendly alternative to traditional air conditioning.

 

Hessaire Evaporative Cooling Solutions

Hessaire’s evaporative coolers deliver powerful airflow and effective cooling at a fraction of the cost of conventional air conditioning. Using advanced two-stage evaporative technology, our systems provide sustainable, eco-conscious comfort for homes, offices, workshops, outdoor spaces, and event venues.

Mobile and Mounted Options

Hessaire offers both portable and mounted evaporative cooling solutions designed for flexibility and performance. Our mobile coolers bring cooling anywhere — from patios and pool decks to job sites and sporting events — while our installed systems provide consistent, large-scale cooling for buildings and commercial environments.

Healthier Air, Naturally

Evaporative cooling continuously draws in fresh, filtered outdoor air rather than recirculating stale indoor air. This process helps flush out contaminants, improving air quality and maintaining a comfortable, breathable environment.

A Cooling Method Rooted in History

The principle of evaporative cooling dates back thousands of years. Ancient Egyptian murals depict the use of porous clay jars filled with water placed near air inlets to cool living spaces. Though they lacked modern motors and fans, early civilizations intuitively designed architecture around the same natural cooling process that inspires today’s evaporative systems.

Ancient Evaporative Cooling System

Engineered for Comfort, Designed for You

Today, Hessaire continues that legacy of innovation by engineering evaporative cooling solutions that balance performance, sustainability, and comfort. Whether you need spot cooling on the go or whole-space temperature control, our systems are built to keep you cool, naturally.