GLV International Ltd.’s new insulated and uninsulated Square Flexible Air Ducts are all UL 181 listed flexible air ducts specifically designed for installation in areas with restricted or limited ...

Many in our industry believe the duct material used in an installation determines how well the HVAC system moves air. Because of this mentality, flexible duct often gets a bad name. The issue isn’t ...

Elimination of vibrations and noise in air conditioning and heating systems is of utmost importance to ensure a quiet operation. Equally critical is to ensure that the correct fabric is used based on ...

Before selecting duct materials, it helps to understand how air flows from your heating/cooling unit through the duct network. Most systems use either a hot air furnace or an air conditioner ...

Each year, thousands of Arizona residents email or call Rosie Romero’s radio show with questions about everything from preventing fires in their chimneys to getting rid of tree roots invading their ...

The National Electrical Manufacturers Association has published NEMA PRP 2-2014 Guidelines for Solvent-Cementing Joints for PVC Rigid Nonmetallic Conduit, Duct, and Fittings. This document presents ...

All questions and answers are based on the 2017 NEC. Underlined text indicates a Code change. Q. What are the Code rules regarding wiring installed in ducts specifically fabricated for environmental ...