HVAC & Climate Control

Replacing a central air conditioner and furnace, or installing a ducted heat pump, in a typical South Bay home commonly runs about $12,000 to $25,000, and adding new ductwork pushes a project higher. The main drivers are the system size the load calculation calls for, equipment efficiency, heat pump versus gas furnace, duct condition, attic access, electrical upgrades, and corrosion-resistant coil options for coastal homes. Permits and required HERS testing belong in the quote. Paragon quotes a fixed price after an on-site visit.

Many older beach-city homes were built without it because the ocean breeze kept them comfortable. Warm spells still arrive, particularly in late summer and early fall, and newer, tighter homes and upstairs bedrooms hold heat well into the evening. The marine layer can also leave indoor air damp, and a correctly sized system removes moisture as well as heat. For homes without ducts, mini-splits or a compact heat pump add cooling and efficient heating without a remodel.

For most homes here, yes. Mild South Bay winters suit heat pumps well, since one outdoor unit both heats and cools with no gas combustion, and it can replace an aging furnace and air conditioner in a single project. Ducted and ductless versions are available. The things to verify first are electrical panel capacity, correct sizing, and an outdoor location sheltered from direct salt spray where that is possible. Paragon checks your panel and ductwork before recommending a heat pump, so nothing surprises you mid-installation.

HERS testing is independent third-party verification under California's Title 24 energy code. When HVAC equipment or ducts are replaced or altered, the code frequently requires a certified HERS rater to test duct leakage, and sometimes airflow or refrigerant charge, before the permit can be finaled. Leaky ducts dump conditioned air into the attic, so the test protects your comfort and your bill, not just the paperwork. Paragon builds ductwork to pass, schedules the rater, and includes required testing in the project scope.

Plan on professional service at least once a year, ideally before summer, with filter changes every one to three months depending on the filter and the household. Near the beach, outdoor coils benefit from gentle freshwater rinsing more often than that, because salt deposits accelerate corrosion. A proper service visit includes coil inspection, tightening electrical connections, clearing the condensate drain, and checking refrigerant pressures and airflow. Catching corrosion or a weak component early is what prevents a mid-summer failure and extends equipment life.