Your Comfort Is
Our Priority
For over 30 years, California Air Conditioning Systems has been the trusted choice for heating, cooling, and indoor air quality solutions across the South Bay and greater Los Angeles area.
Comprehensive HVAC Solutions
From installation to emergency repairs, we deliver reliable climate control services for every need.
Air Conditioning
Expert AC repair, installation, and maintenance for residential and commercial systems. Keep cool all summer.
Learn moreHeating Systems
Furnace and heater repair, replacement, and installation. Stay warm through winter.
Learn moreIndoor Air Quality
Air duct cleaning, filtration, and purification systems for healthier indoor environments.
Learn moreEquipment Rentals
Portable AC units, heaters, and air scrubbers available for temporary climate control needs.
Learn morePreventative Maintenance
Scheduled HVAC inspections and tune-ups to prevent breakdowns and extend system life.
Learn more24/7 Emergency Service
Round-the-clock emergency repairs when you need help most. Fast response guaranteed.
Learn moreTrusted HVAC Experts Since 1991
California Air Conditioning Systems has been proudly serving all of Southern California since 1991 — including Los Angeles, Orange County, and the South Bay. We provide top-tier residential, commercial, and industrial HVAC services backed by a team of certified technicians. We're fully licensed and insured, so you can count on quality workmanship every time.
Beyond standard HVAC services, we also offer construction services and custom HVAC system design tailored to your property's unique requirements. Whether it's a new build, a retrofit, or a complete system overhaul, our experienced engineers and installers deliver energy-efficient solutions that stand the test of time.
30+
Years Experience
40+
Cities Served
24/7
Availability
1000s
Happy Clients
Keep Your System Running at Peak Performance
Our comprehensive preventative maintenance program is designed to keep your HVAC system running efficiently year-round. Regular service prevents costly breakdowns, extends equipment life, and ensures your home stays comfortable in every season.
- Air filter replacement & airflow optimization
- Blower inspection, balancing & cleaning
- Coil, line & drain cleaning
- Motor lubrication & pump inspection
- Electrical component inspection
- Refrigerant level checks
- Burner assembly cleaning & analysis
- Heat exchanger crack inspection
Save Money
Reduce energy bills with optimized efficiency
Peace of Mind
Prevent unexpected breakdowns before they happen
Priority Service
PM clients get expedited response times
Extended Life
Maximize your HVAC equipment lifespan
24/7 Emergency HVAC Services
AC broken in the middle of summer? Heater out on a cold night? Don't wait — our emergency technicians are available around the clock.
Average response time: under 2 hours
What Our Clients Say
Trusted by homeowners and businesses across the South Bay and greater Los Angeles area.
“California AC saved us during a heatwave. They came same-day and fixed our unit in under two hours. Professional, honest pricing, and incredibly fast. Highly recommend!”
Jennifer M.
Torrance, CA
“We’ve used their preventative maintenance program for 3 years. Our system runs better than ever and our energy bills dropped noticeably. Great team.”
Robert K.
Manhattan Beach, CA
“New AC installation went perfectly. The crew was punctual, clean, and explained everything. Best HVAC experience we’ve had in 20 years of home ownership.”
Patricia S.
Redondo Beach, CA
“Emergency heating repair on a cold January night. They arrived within the hour and had our furnace running again. Can’t thank them enough.”
Michael T.
Long Beach, CA
“Outstanding commercial HVAC service for our office building. Their maintenance program keeps everything running smoothly. Very reliable company.”
Lisa W.
Palos Verdes, CA
“Fair pricing, excellent work, and they actually show up when they say they will. Our go-to HVAC company for both our home and business.”
David H.
Santa Monica, CA
Serving 40+ Cities Across Los Angeles & South Bay
From the beach communities of the South Bay to neighborhoods across greater Los Angeles, California AC has been the trusted HVAC partner for homeowners and businesses for over 50 years.
...and many more across LA County
Contact UsReady to Get Started?
Whether you need a routine tune-up, emergency repair, or a complete system replacement, our team is here to help. Schedule your service today or request a free estimate—no obligation, no hassle.
Or email us at harryirvine@californiaac.com