Adelanto ductwork work is different from older HD cities because most Adelanto homes are post-2010 builds with newer ductwork still in mid-life. Pure full-replacement work is rare here. The bigger Adelanto opportunity is sealing work: original builder-grade installs sometimes have leaky joint connections that lose 20-30% of conditioned air to the attic over time. Mastic sealing addresses this without full replacement, typically $3,000-$7,000 for the average 120-200 linear ft Adelanto home. Multi-zone systems in larger Adelanto homes also occasionally need zone damper repair or replacement alongside duct sealing. New construction work occasionally comes through us when builders subcontract HVAC + ductwork combined, but most new Adelanto builds are handled by builder mechanical contractors. We pick up paid maintenance, sealing work, and system upgrades. East Adelanto and El Mirage area properties get heavier dust loads than central Mariposa Ranch subdivisions, so 4-inch media filter cabinets (6-month change cycles) recommended for those areas to extend ductwork cleanliness.