Last Updated on November 3, 2021 by Shawn Lee Central air-conditioning is no stranger to us. We often think that central air-conditioning is a Freon

Central air-conditioning is no stranger to us. We often think that central air-conditioning is a Freon system, which uses Freon as a medium for refrigeration and heat exchange, but the most environmentally friendly and energy-saving is the central chilled water air-conditioning system.