For construction in the last decade, Houston region, does it seem plausible to professionals that duct leakage would account for 3% of cooling loads? I always thought average duct leakage was higher, even for Energy Star homes built 2002-07. And thought with higher duct leakage, surely would be responsible for more than 3% of cooling loads. This is Houston TX and the vast majority of houses have ducts and equipment in unconditioned attics.
Thanks for your thoughts -- Pstu