HVAC Questions San Diego Homeowners Ask

Most residential changeouts (replacing the outdoor condenser and the indoor furnace or air handler) are completed in a single working day. Jobs that add ductwork, relocate equipment or upgrade electrical can take two days. When a permit inspection applies, it happens afterward on a separate visit.

Replacement usually makes more sense when the system is 12–15+ years old, the repair is a major component (compressor, coil, heat exchanger), the system uses phased-out R-22 refrigerant, or you've had repeated repairs in the last two years. A one-off minor repair on a system under 10 years old is normally worth doing.

In San Diego's mild climate, a well-maintained central AC typically lasts 12–17 years. Past 15 years, efficiency has fallen well behind current SEER2 equipment and the chance of a major failure rises sharply, so most homeowners plan replacement rather than wait for a breakdown in August.

Not always, but often it's smart. The indoor coil sits on top of the furnace and must match the new outdoor unit; if the furnace is also 15+ years old, replacing both at once avoids paying labor twice and lets the whole system be matched for efficiency. In many San Diego homes a heat pump can replace both.

It depends on square footage, insulation, windows, orientation and ductwork, not just the size of the old unit. We run a load calculation rather than copying the existing tonnage, because an oversized system short-cycles and controls humidity poorly while an undersized one runs constantly.

Frequently yes, if it's properly sized, sealed and insulated. We inspect and test ducts as part of the evaluation. California's energy code requires duct leakage verification on many changeouts, so leaky or undersized ducts get flagged before the new equipment goes in.

Yes. Replacing heating or cooling equipment requires a mechanical permit in the City of San Diego and every other jurisdiction in the county, even for a like-for-like swap. When a job needs a permit, we can pull it and coordinate the inspection.

The crew protects floors and work areas, recovers refrigerant from the old system, removes old equipment, sets the new outdoor unit and indoor equipment, connects refrigerant lines, electrical, condensate drain and controls, pressure-tests and evacuates the lines, charges the system, then starts it up and verifies airflow, temperatures and thermostat operation with you.

We recover the refrigerant according to EPA rules, then haul away and recycle the old condenser, furnace or air handler. You don't need to arrange disposal.

Yes. The indoor unit (furnace or air handler) is usually in a closet, garage or attic, and the thermostat is inside. Someone 18 or older should be home for the installation and for the final walkthrough.

Once a year for a cooling-only system, ideally in spring; twice a year if you rely on heating in winter. Filters should be checked every 1–3 months depending on the filter type, pets and dust.

Yes. Superior Air has installed and serviced commercial HVAC (rooftop units, split systems, VRF and ductwork) on new construction, tenant improvements and multi-unit residential projects across San Diego County, and provides preventive-maintenance programs for managed properties.