An evaporative cooling system will use air outside your home to cool the air inside your home by having it pass over a moistened pad. It can cool down your home from anywhere between 15-40°F, making it an acceptable way to keep your home cool in the summer. That said, the unit has its own advantages and disadvantages over central air conditioning. Consider the following things when researching a whole-home evaporative cooler.
When compared to central AC, a whole-home evaporative cooler will be more efficient in several ways. What may be most appealing to you is that this type of unit will use 25% of the electricity compared to central AC. Over time, this can lead to substantial savings on your electric bill. If you are using a whole-home evaporative cooler to replace an aging central AC system, the cost savings will be even more dramatic to you by simply replacing old HVAC technology.
Central AC also requires refrigerant in order for the appliance to cool down the air. This refrigerant has to be monitored and refilled periodically in order for the unit to work. Malfunctioning central AC units can have refrigerant leaks, which need to be addressed for the unit to run.
A whole-home evaporative cooler just uses water and air from outside, so there is not need to maintain special chemicals to run the unit. It also won't involve calling an HVAC technician to refill the special chemicals.
Expect to perform more maintenance with a whole-home evaporative cooler. This is because the unit works by rotating a pad through water, which air passes through and becomes cool. This pad will need frequent cleaning to remove the dirt and debris that can accumulate on it over time. Cleaning the pad is not difficult, and can be done on your own, you just need to keep an eye on it and remember to do it on a regular basis.
In addition, there will be a filter for the water coming into the unit that needs to be cleaned as well, but the maintenance is less frequent when compared to the pad.
A whole-home evaporative cooler works best in climates that are dry. If the climate is humid, the air passing through will become overly humid. If the air is dry, it will become humid at a level that is more ideal for your home.
For more information on whole-home evaporative cooler system, speak with an HVAC contractor in your area like Metro Air.