Do you have floor or ceiling vents, and does your house have concrete flooring or do you have a crawl space under depending on the answer because if you have a unit that is all outside then the duct may not be sealed
you said that the unit is on the ground is it a package unit or do you have a furnace insideyou said that the unit is on the ground is it a package unit or do you have a furnace inside
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Do you have floor or ceiling vents, and does your house have concrete flooring or do you have a crawl space under depending on the answer because if you have a unit that is all outside then the duct may not be sealed
you said that the unit is on the ground is it a package unit or do you have a furnace inside