AC & HVAC Installation & Repairs in San Mateo County, California

The equipment and the labor, nothing else. The total depends on the system you choose and on your home, mainly its size and the condition of its ducts. If the ducts need sealing or replacing, we tell you at the free assessment, well before installation day. Every quote is itemized with no hidden fees. Call (408) 733-2000 to schedule your assessment.

Very likely — most installations are scheduled within days of an approved quote, and the work itself takes 4–8 hours for a central AC replacement or 3–6 hours per zone for a mini split. Projects with new air conditioning ductwork run 2–3 days. Homes with a completely failed system get priority scheduling, so mention it when you call.

It depends on your ducts more than on the house. If they’re healthy, central AC cools the whole home evenly. If they’re old or missing, as they often are after a garage conversion or an addition, a ductless mini split avoids the air that ducts lose and lets you set each room on its own. Call (408) 733-2000 and we’ll assess which route saves you more.

Yes. Inside a city, the permit goes through that city’s building department; in unincorporated areas, it goes through the County Planning and Building Department. We help with the permit paperwork, and every system we install is built to California’s Title 24 energy code and local requirements, so inspections go smoothly. Documented work protects your warranty and your resale value.

Call (408) 733-2000. Same-day repair visits are usually available across San Mateo County, especially if you call in the morning. Our trucks stock the parts behind most failures (capacitors, contactors, igniters, thermostats), so there’s a good chance we fix it on the first visit.

A system past 10–15 years with repeat breakdowns, or one facing a repair over 50% of a new unit’s cost, is usually worth replacing. Lower power bills and fewer emergency calls help pay it back, and rebates may cover part of the cost. Call (408) 733-2000 and we’ll run your specific numbers during the diagnostic, honestly.

Book a spring tune-up before the first hot stretch, while calendars are still open. A technician checks refrigerant and airflow. Pair it with a fall heating check, and in between, change the air filter every 1–3 months and keep leaves and dust off the outdoor unit. Inland homes get the county’s hottest days, so they gain the most. Skipped spring tune-ups are the top cause of the preventable July breakdowns we see.

Two layers: the manufacturer’s equipment warranty plus our own workmanship warranty. Air & Plumbing Systems is a fully licensed and insured California HVAC contractor (License #901246) with over 25 years of experience. Our certified technicians work across San Mateo County and the rest of the Bay Area.