Ameri-Mex Plumbing Incorporated in Chula Vista holds CSLB license #691102 with dual C-36 plumbing and C-20 HVAC classifications, logging more than 1,200 permitted projects across San Diego County. The combined plumbing and HVAC scope means a single contractor handles furnace gas-supply lines, condensate drains, and hydronic heating loops alongside standard fixture and sewer work — trade overlap that parallels the electrical-system coordination Arcelectric, Inc provides during whole-house renovation sequences. Operating from Woodlawn Avenue in the 91911 corridor for more than 30 years, the bilingual English-Spanish crew covers new construction plumbing, service and repair, water heater installation, and air conditioning system work. Roof-drainage tie-ins and gutter downspout connections to subsurface drain lines require coordination with the roofing scope that CASAS ROOF INC handles on residential reroof projects in the same 91911 ZIP. New-construction rough-in projects require pressure-testing copper and PEX supply lines to 150 PSI for two hours and air-testing DWV systems to 5 PSI per California Plumbing Code Section 609 before wall closure.