Several BuildZoom contractors collaborated on a list of ideas for lowering your HERS rating: http://blog.buildzoom.com/lowering-your-hers-rating
Any additional thoughts on how to lower your HERS rating?
Sealing the ducts will definitely reduce it . Have your home or office ducts tested for leaks, when you have a central air conditioner or furnace old or new…ducts that leak should be sealed or replaced.
Hers testing / rating is based on air loss-air infiltration- Duct sealing is one possible way to improve the test, another is sealing joints and furnace plentums, seal supply registers cans at the flooring,