The condenser air flow looks like this,the blue line represent ambient air going into the outside perimeter of the unit,this helps to cool the coil and transfer the heat,During the spring pollen,leave's and bugs get sucked into it.When this happens this will prevent the transfer of heat,it is detrimental to keep this clean,if you have shrubs,plant's or weed's that are within 18" or closer they should be moved or cut back.
The red lines indicate warmer/hot air being expelled from the unit.
Hope this help's.
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