Air Tight Solutions streamlines the journey from framing to final inspection by offering a single appointment that covers Duct Blast / Leakage / Tightness testing, Blower Door Testing, Manual J Calculations, and ResCheck documentation, eliminating costly downtime between trades. Field experts begin by isolating supply and return ducts, applying calibrated pressure, and logging leakage values that comply with three-percent thresholds. A subsequent Blower Door test depressurizes the structure, measuring air changes per hour and identifying envelope leaks around recessed fixtures and sheathing seams.