Bay Area's Trusted HVAC & Duct Cleaning Experts

We serve the full 9-county Bay Area: San Francisco, Oakland, Berkeley, San Jose, Palo Alto, Mountain View, Sunnyvale, Santa Clara, Fremont, Hayward, San Mateo, Walnut Creek, Concord, and surrounding communities. If you're in the Bay Area, we can reach you — usually same day or next day.

Yes. We offer same-day and next-day appointments across the Bay Area. Call before noon and we can typically dispatch a technician the same afternoon. For urgent breakdowns — no heat, no AC during a heat wave — our priority emergency line is available 24/7 throughout San Francisco, the East Bay, and the South Bay.

More than ever. Bay Area summers have intensified in recent years, with heat waves regularly pushing past 95°F in the East Bay, South Bay, and inland valleys like Concord, Livermore, and Walnut Creek. Even fog-belt San Francisco sees hot stretches. A ductless mini-split or central AC system pays for itself quickly in comfort and home value — and qualifies for California utility rebates.

Yes. Hi-Tech HVAC is licensed by the California Contractors State License Board (CSLB) and every technician holds EPA Section 608 certification for refrigerant handling. We carry full general liability insurance and workers' compensation coverage — required by California law and something any reputable Bay Area contractor must have.

Central AC installation in the Bay Area typically runs $4,000–$9,000+, depending on home size, system type, and existing ductwork. Ductless mini-splits start around $2,500 per zone. We provide a free, itemized quote before any work begins — no surprise charges. Ask about California utility rebates and financing options that can significantly offset upfront cost.

It depends on your home and energy goals. Gas furnaces remain common in older Bay Area homes. High-efficiency heat pumps — which both heat and cool — are increasingly popular as California phases out gas appliances. We install Carrier, Trane, Lennox, Mitsubishi, and Daikin systems and will recommend the right fit for your square footage, insulation, and PG&E bill.

We recommend a professional tune-up twice a year: once in spring before AC season kicks in, and once in fall before heating season. The Bay Area's mild climate can mask slow system degradation — dust, allergens, and salt air near the coast accelerate wear. Regular maintenance also keeps manufacturer warranties valid and catches small issues before they become expensive ones.

Yes. We provide professional air duct cleaning throughout the Bay Area. Bay Area homes — especially those built before 1990 — often have decades of dust, mold spores, and allergens in their ductwork. If you've recently renovated, had a pest issue, or noticed musty smells or increased allergy symptoms, a duct inspection and cleaning can make a significant difference in indoor air quality.