I recently received a somewhat anxious call from a friend in the sheet metal industry. He won a nice duct order, but his submittals were being rejected because he needed to provide published ...

CHANTILLY, Va. — The Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) announced that the American National Standards Institute (ANSI) has approved its HVAC Air Duct Leakage ...

Duct smoke detector maintenance requirements are not included in the NFPA standard that covers HVAC systems (NFPA 90A or 90B); however, the International Code Council’s 2015 Mechanical Code does state ...

My company is installing a fire alarm sprinkler supervisory panel (DACT) with one outside horn, one smoke detector and one manual pull box. We will be connecting to switches installed by the sprinkler ...