High efficiency air condenser is a waterless glass condenser that requires no cooling water for operation. The glass bellows design provides a high surface area air condenser which is very effective. Performance of the high efficiency air condenser is equivalent to a Liebig type condenser being used with tap water. No risks of water leakage, and potential flooding. By not using water the environmental impact is reduced as is the costs of water usage. Clear visibility of the reaction reflux. Suitable for use under vacuumHigh efficiency air condenser is considerably less expensive than other waterless condenser options. For solvent volumes from 5ml up to 1 liter. Helps meet sustainable water reduction targets. Water-free design: No chiller/circulator needed, Eliminate wasting water, No risk of flooding the hood, and No fear of water issues affecting the reflux/reaction due the condenser having reduced water flow or no flow of water.