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About Custom Air Systems

Custom Air Systems is a Carrier Authorized Dealer!  Click to Learn More!

Heating & Cooling Services

Custom Air Systems is a customer-focused heating and cooling company started in 1995. We began humbly with one service truck – today we have over twenty. Dedication to delivering you, our customer, the highest quality service available at the best price has become our trademark.

We are proud of our legacy, which began in Simi Valley over 26 years ago. With over 35,000 satisfied customers – a number that continues to grow – we take pride in our work and commitment to customer satisfaction.


Family Owned & Operated

Our company has been family-owned since the beginning. President Martin Fraye always considered customers and employees to be part of his family.

Our company specializes in designing, engineering, and installing complete comfort systems for existing homes and buildings. We take special pride in our well-trained craftsmen, who bring a positive attitude, integrity, and superior knowledge to the job site each and every time. Our entire company works hard to create hassle-free and enjoyable experiences. We stand behind our work. From the professionalism of our sales engineers to the dedication of our field personnel, we are committed to delivering the best.

Place your trust in us, know your costs up front, and be confident that we will complete your job correctly the first time. We make it a point to review all details of the proposed system before the job even begins. We back this philosophy with our exclusive written guarantee. Choose Custom Air Systems to contract your job.


Dedicated to Hard Work & Ethics

Custom Air Systems pledges to compete ethically and with fairness in the marketplace. We understand that, on this basis, we are able to outperform those with whom we compete. To this end, we also pledge to uphold the highest level of professionalism in all we do, for we understand and appreciate the value of our customers and therefore, are unwilling to relinquish them to competition.


Expert HVAC services backed by an unbeatable guarantee

From the summer swelter to the winter chill, you need an HVAC heating and air conditioning system that can keep you comfortable year-round. There’s no one contractor better at providing high-quality, dependable HVAC service than Custom Air Systems. We’ve been serving the Ventura Valley and the Greater Los Angeles Area since 1995. Over that time, we’ve earned a reputation as the region’s top HVAC company for professional heating and cooling service. Our certified technicians are experts in ac and heat repair, installation, maintenance, air quality control, and ductwork. As a company, we strongly believe that our customers ought to be to be treated like family too. That’s why all our work is backed by our Carrier’s 100% Satisfaction performance guarantee. When you choose Custom Air Systems, you’re “ part of the family!“


Custom Air Systems


Phone: 805-522-2526
Fax: 805-522-4093


Payments Accepted:
Financing, with approved Credit
Credit Card

Operating Hours:

Monday – Friday
8:00 AM – 4:00 PM

Saturday by Appointment


Credit Card Payments to Custom Air Systems