ASR Paint Sprayer Parts & Service in College Area, San Diego, is a veteran-owned and women-owned airless paint sprayer repair shop at 4765 Trojan Ave, Unit B, 92115. Owners Robyn Zuniga Untalan and John Untalan founded the business in 2009, and it holds a BBB A+ rating after 16 years of operation focused exclusively on airless spraying equipment. The service menu covers airless sprayer diagnostics and repair, preventive maintenance, small-engine service, HVLP spray gun rebuilds, and full-unit rentals for contractors who need backup equipment while their primary rigs are in the shop. The painting crews that depend on this equipment — outfits running exterior and interior coats on residential and commercial projects — include contractors such as NORDBY PAINTING in College Area, where a sprayer breakdown mid-job creates an immediate need for same-day diagnostics or a loaner rig. ASR is an authorized TriTech dealer and also services Graco and Titan units — the three brands that dominate the commercial painting contractor market in San Diego County. A worn prime-spray valve, a leaking return line, or a clogged filter manifold can shut down a job site for a full day, and ASR's repair bench processes those common failure modes with a 30-day labor warranty on completed work. Parts inventory includes pumps, packings, tip guards, hoses, gun kits, and filters stocked on-site for the most common Graco and Titan models, reducing the wait time that a mail-order replacement would impose on an active contractor. Window treatment and interior-finish contractors who spray drapery fabric coatings and textured wall finishes also route their HVLP equipment through ASR, bridging the trade overlap with interior specialists such as Drapery Tradition Incorporated in San Carlos. New and used equipment sales round out the storefront, giving contractors a single source for purchase, repair, and rental under one roof. The Trojan Avenue shop is near the SDSU campus, south of El Cajon Blvd in a light-industrial pocket that also houses construction supply and finishing-trade vendors.