The average HVAC system with flex duct and duct board here in Austin, Texas, is about .75 E.S.P. This study proves, yet again, that if the flexible duct design and installation is completed with care, flex works. However, I do not advise the use of duct board or more than 25% flex.
Great video, thanks for posting.
According to the Insulation Institute, R-13 insulation is the minimum value to stop condesation from forming on surfaces.
The average HVAC system with flex duct and duct board here in Austin, Texas, is about .75 E.S.P. This study proves, yet again, that if the flexible duct design and installation is completed with care, flex works. However, I do not advise the use of duct board or more than 25% flex.