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. The exposed, rooftop ...

When your house starts feeling unevenly heated or cooled, it’s easy to assume the worst—that your HVAC system is dying. But ...

Densoseal 16A is based on polybutene, mineral fillers, organic fibers and water displacing materials. It is designed for sealing cable ducts, conduits and service entry pipes or sleeves particularly ...

In high-pressure HVAC systems, the duct sealing process can determine whether a project finishes on time or stalls. Traditional liquid duct sealants may require up to 48 hours to cure before pressure ...

Fiberglass insulation is not airtight. Heck, it will barely even slow air propelled by convection, differential pressure or wind. It is especially helpless against air moving through a leaky pipe ...

It's far from glamorous and there's no flashy end result, but there is a sense of accomplishment when your heating and air conditioning bills improve, the furnace and air conditioner work more ...

Q • We had our air ducts tested by Laclede Gas. They failed with a 73 percent leakage. Their contractor is willing to fix the leaks for $1,000. The Earth Ways Center recommends sealing the ducts with ...

Of all the inventions crafted through the ingenuity of man, duct tape may be the most indispensable. But despite all the amazing things duct tape can do, there's one surprising thing that it can't do: ...