XL Fire Protection is a Santa Ana-based fire sprinkler contractor, operating since 1975, that handles design-build, fabrication, installation and ongoing service. Its work covers wet pipe, dry pipe, pre-action and deluge sprinkler systems, as well as standpipes and fire pumps. The firm serves industrial, government, education and healthcare clients across Southern California and employs union sprinkler fitters. It holds California C-16 Fire Protection Contractor licence 311681 (CSLB).