Trade group welcome the news, but says it's 'far too early to determine' if the non-flammable refrigerant is right for residential market.

Website will keep women in the mechanical industry up to date on career development opportunities.

'It is the volunteer effort of people such as Mr. Halel, which allows ASHRAE to contribute technical advances for the benefit of the industry and public.'

Annual honor reconizes innovative projects, architects, developers, and homebuilders leading the residential green building market.