Is there a free HVAC selection software (or catalog) for hospitals on windows? Like the software that HVAC resellers and shopes have.
I'd recommend starting with this ACCA approved list.
ACCA is a non-profit association whose membership includes more than 60,000 professionals and 4,000 businesses in the indoor environment and energy services community. We work together to promote professional contracting, energy efficiency, and healthy, comfortable indoor environments.
The list includes (among others) -
I also found duct planning software at http://www.plandroid.com/