CSLB C-20 license #772502 backs Advantage Appliance Heating & AC on Lake Murray Boulevard near Lake Murray in La Mesa, a dual-trade operation covering both HVAC system service and major household appliance repair for over 30 years. The appliance division diagnoses and repairs refrigerators, dishwashers, ovens, cooktops, and washing machines—brands and failure modes familiar to parts suppliers like Classic Audio Repair, Inc. across La Mesa's service network. HVAC scopes cover central air conditioning and furnace troubleshooting, capacitor and contactor replacement, evaporator coil cleaning, and blower motor diagnostics on residential split systems throughout the Lake Murray corridor. Gas furnace repair includes heat exchanger crack inspection, inducer motor testing, and gas valve calibration—combustion-safety procedures that interface with gas-line work performed by licensed plumbers such as John Padilla Plumbing, Sewer and Drains. Highest-complexity service calls involve complete HVAC system replacements with matched condenser-and-air-handler pairings, refrigerant lineset evacuation to 500-micron vacuum, and Title 24 HERS-verified duct-leakage testing.