Air Handler This unit is commonly in the attic or a closet in your home and blows air through your house. This unit has to be matched with the condenser properly to ensure maximum efficiency. This contains your heating and evaporator coil

 

 

 

 

 

 

Furnace That part of an environmental system which converts gas, oil, electricity or other fuel into heat for distribution within a structure. 

 

 

 

 

 

 

Evaporator Coil The e. coil is located inside your home in split system air handler [above, left] or gas furnace [above, right]. This produces cooling in air conditioning mode or heat in heat pump mode