Image: Tom Fenenga for Bob Vila As AC coils are usually constructed from copper or aluminum, they are often cleaned with drinking water. Rinse the coils on any outdoor central AC unit by spraying with h2o from the backyard garden hose on the minimal setting. Resources of Indoor Air Pollution https://edgar5xgov.bloggerchest.com/30928928/how-to-clean-air-conditioners-in-jeddah-options