San Diego Heating & Air Conditioning at 3945 30th St delivers heating, ventilation, and air conditioning installation and repair across North Park's 92104 ZIP code. Thermostat wiring upgrades and dedicated HVAC circuit installations coordinate with Kensington Electric on Adams Ave. The operation covers furnace tune-ups, condenser coil cleaning, blower motor replacement, refrigerant recharges, duct leak testing, and full system replacements for single-family homes and small commercial spaces. Pre-sale HVAC condition assessments that feed into property inspection reports pair with Inspection Perfection on University Ave. The most involved projects require complete HVAC system design and installation for gut-renovated mid-century homes with no existing ductwork, demanding custom trunk-line fabrication, register placement, and Manual J load calculations.