San Francisco's fog carries salt from the Pacific, which corrodes compressor terminals, contactor points, and capacitor housings faster than in inland areas. The Richmond and Sunset Districts see the worst of it. Corrosion creates high resistance connections, which generate heat and burn out compressor windings. Voltage drop from corroded terminals forces the motor to draw higher amperage, shortening its life. Regular terminal cleaning and capacitor replacement prevent this, but most homeowners do not know to check until the compressor fails. If your unit sits near the coast or gets direct fog exposure, plan on terminal inspection every two years.
San Francisco enforces Title 24 energy efficiency standards for HVAC replacements, which means any compressor swap that changes system capacity or refrigerant type may trigger a permit requirement. We know which modifications need permits and which fall under repair exemptions. We also understand the city's noise ordinances, which matter if your new compressor sits near a property line or bedroom window. Choosing a contractor familiar with local codes saves you compliance headaches and potential fines. We handle permits, inspections, and code compliance so you do not have to navigate the Department of Building Inspection yourself.
