• SyndicateHvac.com - Air Handler Checks
  An air handler is usually located in the garage, a closet, or in the attic (unless you have a package unit then the air handler is incorporated in the system). It can be a part of your furnace and houses the evaporator coils, the blower, and some controls. The air handler can be an upflow, downflow, or horizontal flow AHU (air handling unit). To determine which one you have follow the return duct. The return duct should originate where you put the filter and/or is the biggest register grill in the house. If the return ends in the bottom of the unit it is an upflow air handler. If the return duct ends in the top of the unit it is a downflow air handler. If the unit looks as if it is lying on it's side with the return duct coming in one side the supply ducts
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