Contact Air Control Systems
Get in touch for quotes, service requests, or 24/7 emergency HVAC support across Southern California.
24/7 Emergency HVAC Service — Call 909-786-4700 for immediate dispatch
Get in Touch
Headquarters
1940 South Grove Ave.
Ontario, CA 91761
Service Area
LA County · San Bernardino · Riverside · Orange County · San Diego
Business Hours
Monday7:00 AM – 5:00 PM
Tuesday7:00 AM – 5:00 PM
Wednesday7:00 AM – 5:00 PM
Thursday7:00 AM – 5:00 PM
Friday7:00 AM – 5:00 PM
SaturdayEmergency Only
SundayEmergency Only
24/7 Emergency Line: 909-786-4700
Send Us a Message
Fill out the form and our team will respond within one business day.
Message received! A member of our team will be in touch within one business day.
FAQ
Frequently Asked Questions
Answers to the most common questions from our clients.
What areas does Air Control Systems serve?
ACS serves the full Southern California region — Los Angeles County, San Bernardino County (including the Inland Empire and Ontario/Rancho Cucamonga area), Riverside County, Orange County, and San Diego County. Our headquarters is located in Ontario, CA, giving us fast response times across all five counties.
How quickly can you respond to an emergency HVAC call?
Our 24/7 emergency line (909-786-4700) connects you directly to an on-call dispatcher. Depending on your location, we typically dispatch a qualified technician within 1–2 hours. For properties under active maintenance contracts, emergency response is prioritised.
Do you offer preventative maintenance contracts?
Yes — ACS currently maintains over 2,840 active commercial properties under preventative maintenance contracts. We tailor programmes to your property's specific equipment, budget, and compliance requirements. Contracts typically include scheduled inspections, filter changes, coil cleaning, and priority emergency response.
Is ACS licensed and insured?
Absolutely. ACS holds a California C-20 HVAC/Refrigeration contractor's license, is fully bonded and insured, and all technicians are NATE-certified. We also maintain LEED certification through the USGBC and are a recognised Southern California Edison Gold Rooftop Partner.
Can ACS help with energy rebates and sustainability programmes?
Yes — as an SCE Gold Rooftop Partner and LEED-certified contractor, ACS is uniquely positioned to guide commercial property owners through utility rebate programmes (including Southern California Edison incentives), LEED certification pathways, and energy-efficiency retrofits that deliver measurable ROI.