Photograph: Tom Fenenga for Bob Vila As AC coils are usually made out of copper or aluminum, they can be cleaned with drinking water. Rinse the coils on any out of doors central AC unit by spraying with drinking water from the back garden hose on the small setting. At https://francisco3tbkr.isblog.net/examine-this-report-on-how-to-clean-air-conditioners-in-jeddah-48295045