Mechanical contractor Air Systems Inc. has been given a Safety Excellence Award from the Sheet Metal and Air-Conditioning Contractors’ National Association for more than 500,000 work hours without a lost-time accident.

This was the company’s second such award from the association.

“It’s an honor for Air Systems to again be recognized as one of the best specialty contractors nationally in terms of occupational safety and health performance,” said company President Art Williams. “Importantly, every person at Air Systems rededicates him/herself every day to working safely and staying healthy. Sustaining this level of commitment is never easy; so it’s indeed gratifying for the company to receive this national recognition.”

Air Systems is a part of Emcor Group Inc.