Air Conditioning Parts Warehouse in downtown San Diego, operating from 1542 State Street since the late 1960s, stocks a complete line of automotive AC compressors, condensers, evaporators, and receiver-driers for domestic and import platforms through twelve distribution points nationwide. The State Street warehouse shares a building with Griffin's Auto Repair, creating a one-stop supply-and-install pipeline for AC system overhauls in the Little Italy corridor. Inventory spans OE-replacement compressors from Sanden, Denso, and Delphi alongside aftermarket condensers and expansion valves, with same-day counter pickup for shops across San Diego County. Full HVAC inspections at the parts-counter level include diagnosing defrost-seal failures and cabin-air-pathway obstructions — climate-comfort crossover work that also involves glass-fit specialists like WindshieldHUB when a windshield seal contributes to airflow loss. Complete R-134a-to-R-1234yf refrigerant retrofit kits for late-model vehicles are the warehouse's most technically involved product assembly.