Local HVAC context
What do San Diego HVAC systems need?
Central San Diego mixes 1950s-70s housing stock with newer condo towers, and the HVAC problems split the same way. Older homes need electrical checks before condenser upgrades and often run their original ductwork. Aging-equipment repairs show up here more than anywhere else in the county, and the pro you're matched with quotes the job before work starts.
Most San Diego work breaks into three building-stock patterns. First, the older single-family neighborhoods in Mid-City and inner Coastal, North Park, South Park, Golden Hill, Mission Hills, Bankers Hill, Kensington, Normal Heights, where the typical project is either first-time central system install (on a 1920s Craftsman or 1940s bungalow that never had ductwork) or a full heat pump replacement with ductwork renewal on a 1950s-60s home where the original system has reached end of life. Manual J load calculation almost always shows the original equipment was oversized by 20 to 40 percent because 1960s contractors sized by square footage rather than actual load.
Second, the Clairemont, Linda Vista, and Bay Park tract stock from the postwar boom. These homes typically have raised slab or raised wood-floor construction, with ductwork in either vented attics or sub-floor crawl spaces. Both run into the same problem: 50-plus year old flexible duct or sheet metal with insulation degradation, sealing failures, and rodent damage that compromises efficiency by 25 to 40 percent. Full ductwork renewal often costs as much as the new equipment itself, but it is the only way to recover the efficiency the new equipment is rated for. Third, the Downtown, Hillcrest, and University Heights mid-rise residential stock, where work is HOA-coordinated per-unit central air handler replacement, common-area chiller and boiler maintenance, and ductless retrofits in older condos where central system retrofit is impractical. The pros we send handle rebate paperwork on every qualifying install, confirming current SDG&E and TECH Clean California program status at quote time for qualifying heat pumps.
