Derek Cole explains why HVAC ducts in an attic lose more cooling than ducts in a crawl space. Attic duct heat gain creates a larger load that needs to be factored into equipment and duct sizing.
Well, when they do a load analysis on that home, on that system, duct loss in the attic for heat gain, heat coming into the duct system, it's calculated. Now, that calculation is different than if it was in the crawl space, because obviously you have more of a heat load if it's in the attic versus the crawl space. So that should have been factored in sizing the unit, the equipment, the duct system, so that shouldn't be a problem.
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