Adding a swamp cooler to a home can deliver benefits including lower indoor temperatures, ample fresh air flow and reduced operating costs versus air-conditioning systems. Swamp coolers can also work with air conditioners to create an ideal environment at home, but they should not be run simultaneously.
Swamp coolers, also known as evaporative coolers, can reduce the temperature indoors by as much as 30 degrees Fahrenheit. They operate by pulling hot air from outside and cooling it using moisture to quickly lower the temperature of the air, and opening windows can make the system even more efficient, allowing the hot air inside to blow out as the colder air circulates. Evaporative coolers can use as much as 75 percent less energy than air-conditioning systems, reducing overall electricity costs. As of 2015, the monthly costs of operation are regularly about one-third of those of air conditioners, according to the National Association of Home Builders.
Swamp coolers also add moisture to an environment, making them ideal for use in dry areas. Increasing humidity indoors can help protect fabrics and wood, keeping them from drying out and cracking. The constant breeze provided by evaporative cooling systems helps ensure ample fresh air flows constantly through a home.