Abstract: An air handler assembly provides an air handler that resides completely on a drain pan, and comprises multiple panels. At least two panels join at the edges to form an enclosed chamber with central region. Two of the opposing panels are apertured to enable passage of air. Multiple coils carrying cooling fluid are disposed in a parallel relationship, and on the inner side, of the coil panels. A blower forces high velocity air through one or more opposing coil panels, and across the coils to cool the air. From the coils, cooled air flows to central region of air handler. A fan at the top of the air handler draws the cooled air from an outlet opening that forms in a top panel for dispersing through a duct or plenum.

Abstract: A miniaturized air handler assembly provides an air handler that resides completely on a drain pan, and comprises multiple panels. At least two panels join at the edges to form an enclosed chamber with central region. Two of the opposing panels are apertured to enable passage of air. Multiple coils carrying cooling fluid are disposed in a parallel relationship, and on the inner side, of the coil panels. A blower forces high velocity air through one or more opposing coil panels, and across the coils to cool the air. All of the condensate that inherently forms on the coils falls into the drain pan. From the coils, cooled air flows to central region of air handler. A fan at the top of the air handler draws the cooled air from an outlet opening that forms in a top panel for dispersing through a duct or plenum.