To earn the Greenguard stamp, products have to meet stringent environmental requirements including not emit volatile organic compounds.

Hardcast now has a water-based coating for HVAC ductwork that has been in contact with smoke and soot.

When Air Management Industries was hired to seal ductwork on a government-owned building in downtown Los Angeles, officials knew standard brush-on sealant wasn’t going to cut it.

Hardcast now has an e-course on duct sealing mastics.

When you hear the phrase “rockabilly music,” what do you think of? Early Elvis Presley and Johnny Cash? Jerry Lee Lewis and Carl Perkins? What about HVAC or duct sealing?

Did you know Hardcast can trace its roots back to the 1950s and the early days of rock ‘n’ roll?

While officials with Carlisle HVAC Products bemoan the lack of tax incentives for duct sealing (see “A taxing HVAC problem) they also point out that unless contractors know how to properly perform the service, the industry won’t have much luck convincing lawmakers to support it.

Shurtape says its line of duct-sealing tapes offer superior shear adhesion and high resistance to mold growth and humidity, while maintaining code compliance to ensure work passes inspection.

Carlisle HVAC Products’ new Edge Sealer is an aerosol spray made for indoor use to capture cut ends of insulation and ductwork materials on the jobsite, making sure the HVAC system performs as designed.

Duct systems leak. HVAC construction contractors, duct manufacturers and sheet metal products manufacturers have always acknowledged that duct systems are not 100 percent airtight.