Duct Design and Sizing
Duct work is designed according to ACCA Manual-D standards. Installed per Arkansas Mechanical Code. Each installation layout is custom sized to the home's requirements.
In our applications, we generally use sheet metal duct work, and we insulate the duct with R-8 duct insulation (Code only requires R-6). This does cost more than commonly used "flex duct", however this saves you, the homeowner, and provides better comfort throughout the home.