AC tune up San Francisco

When your old air conditioner struggles to keep up or repair costs keep climbing, it's time for a reliable, energy-efficient replacement. At Johnny's Air Conditioning, we specialize in matching the perfect AC system to your home or business in San Francisco. Our NATE-certified technicians start with a detailed load calculation to ensure you get the right size—neither too small nor oversized—for maximum comfort and efficiency.

We carry top brands like Carrier, Lennox, Trane, and Mitsubishi, so you have options that fit your budget and cooling needs. The process begins with a complimentary in-home estimate, where we assess your ductwork, insulation, and existing setup. Once you choose a system, our team handles the entire installation with minimal disruption, including proper refrigerant charging, thermostat setup, and a thorough cleanup.

Why choose us? Because we've installed thousands of AC units across Los Angeles and Pasadena, and our customers consistently praise our honesty and craftsmanship. We also offer flexible financing options and back our work with solid warranties. Whether you need a central AC, ductless mini-split, or heat pump, we make the upgrade seamless. Call us today to schedule your complimentary estimate and start enjoying cooler summers.

A broken furnace in the middle of winter is more than an inconvenience—it's a safety concern. Johnny's Air Conditioning provides fast, reliable heating repair throughout San Francisco to get your system back up and running. Our technicians are trained on all major gas furnace brands, including Lennox, Carrier, and Trane, and they arrive with fully stocked trucks to handle most repairs in a single visit.

Common issues we resolve include ignition problems, faulty thermostats, blower motor failures, and uneven heating. We begin with a thorough diagnostic to identify the root cause, then explain your options in plain language—no technical jargon or hidden fees. If a repair isn't cost-effective, we'll advise on replacement, but we never push unnecessary work. For emergency situations, we offer priority dispatch to get you warm quickly.

Beyond repairs, we also provide preventive maintenance to extend your furnace's life and improve efficiency. Our tune-up includes cleaning burners, checking heat exchangers for cracks, testing safety controls, and replacing filters. With flat-rate pricing and no overtime charges, you can trust us to fix your heat right the first time. Don't shiver through another cold night—contact Johnny's for honest heating service.

Businesses in San Francisco need reliable climate control to keep employees comfortable, customers happy, and equipment running properly. Johnny's Air Conditioning brings three decades of commercial HVAC experience to offices, retail spaces, restaurants, and multi-tenant buildings. We understand that downtime hurts your bottom line, which is why we offer flexible scheduling, including after-hours and weekend service, to minimize disruption.

Our commercial services start with a free consultation to assess your facility's unique needs. Whether you need routine maintenance on rooftop units, emergency repair for a failed compressor, or a complete system retrofit for energy savings, we handle it all. We work with all major brands and have the technical expertise to troubleshoot complex controls, VAV systems, and ductwork designs. Preventive maintenance agreements are available to keep your equipment in top shape year-round, reducing unexpected breakdowns and extending equipment life.

We serve commercial clients across Pasadena, Los Angeles, and surrounding areas, providing the same honesty and integrity that built our family business. Every job comes with clear communication, flat-rate pricing where possible, and a commitment to safety and code compliance. Keep your business running smoothly—partner with Johnny's Air Conditioning for dependable commercial HVAC solutions.