For air-duct and dryer-vent cleaning in Chula Vista's Broadway corridor, John Air Duct Cleaning & HVAC Chula-Vista operates from East H Street near the H Street and Broadway intersection that anchors the 91910 commercial zone. Lint-clogged dryer vents are a leading cause of residential fires cited by the U.S. Consumer Product Safety Commission, and the service scope overlaps with the subterranean termite inspections conducted by Nixtermite Inc. that expose compromised vent paths behind drywall. Technicians use rotary-brush agitation paired with negative-pressure HEPA-filtered vacuum systems to dislodge debris from supply and return trunk lines, register boots, and plenum chambers. Before-and-after photo documentation of each vent run gives homeowners a visual record of buildup removal, a verification step especially relevant in Chula Vista's older homes along H Street where carpet fibers compound airborne particulate — the same residue addressed by extraction crews at Hot Style Carpet Cleaning. Full-system cleanings cover up to 25 supply-and-return registers, main trunk lines up to 12 inches in diameter, and flexible duct runs exceeding 30 linear feet per branch.