Building Science Guides

Building science is the study of how heat, air and moisture move through a house. In Austin, where attics bake and summer air is heavy with humidity, those forces explain a lot: sweating vents, clammy rooms, dusty air and equipment that seems too big or too small.

Good places to begin are Why Your Vents and Ducts Sweat, Where Your Home Leaks Air and Smart HVAC Design: Manual J, D & S Explained. Together they cover condensation, air leakage and system sizing.

Because so many Central Texas ducts run through hot attics, our attic insulation page explains how insulation and air sealing work with your HVAC system.