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31 Years
experience
Emergency
services
Trusted HVAC Solutions in Simi Valley
Custom Air Systems has been a trusted provider of HVAC solutions since 1995, serving residential and commercial clients throughout the Los Angeles area. Founded in Simi Valley, our family-owned business prioritizes customer satisfaction through ethical practices, technical expertise, and a commitment to quality. With over 26 years of experience, we specialize in designing, engineering, and installing complete comfort systems tailored to each client's unique needs. Our team of factory-trained technicians delivers exceptional service, from routine maintenance to complex repairs, ensuring optimal performance and energy efficiency.

We stand behind our work with a written guarantee and prioritize transparent communication, providing upfront costs and hassle-free experiences. Recognized for our dedication to excellence, we serve as a Carrier Authorized Dealer, offering cutting-edge products and specialized services like coastal corrosion protection. Our mission remains to create comfortable, healthy indoor environments while maintaining the highest standards of professionalism and reliability.
Services
HVAC Installation Emergency Repairs Preventive Maintenance Duct Cleaning Indoor Air Quality
Details
  • Year established: 1995
Highlights and features
  • Family-owned with 26+ years of local HVAC expertise
  • Factory-trained technicians for all makes/models
  • Free estimates on new HVAC installations
  • Comprehensive service agreements available
  • Specialized coastal corrosion protection coating
Associations and certifications
  • Carrier Authorized Dealer
What people say
Outstanding customer service Exceptionally prompt and responsive First-rate technical expertise Thorough job every time Professional and friendly team
Services
HVAC Installation
Custom Air Systems specializes in complete HVAC system installations for residential and commercial properties. Our technicians assess building requirements, select energy-efficient equipment, and ensure proper ductwork and electrical connections. We provide detailed customer education on system operation and maintenance to maximize longevity and efficiency.
Preventive Maintenance
Our preventive maintenance services include filter replacement, system optimization, and component inspections. Technicians clean critical parts, calibrate controls, and identify potential issues before they become major problems. This extends equipment lifespan and maintains optimal energy efficiency for cost-effective operation.
Emergency Repairs
We offer prompt HVAC repair services for urgent issues like refrigerant leaks, electrical failures, and system breakdowns. Our certified technicians diagnose problems quickly and implement lasting solutions to restore comfort and prevent further damage to heating and cooling systems.
Duct Cleaning
Professional duct cleaning removes contaminants from commercial and residential ventilation systems. Our process includes thorough cleaning of ductwork, sealing leaks, and improving indoor air quality. This enhances system efficiency and reduces energy consumption through improved airflow.
Indoor Air Quality
Our air quality specialists offer solutions like air purifiers, humidifiers, and ventilation systems. We assess existing conditions and recommend improvements to reduce allergens and pollutants, creating healthier living and working environments through advanced filtration technology.
People
Martin Fraye
President
Martin Fraye leads Custom Air Systems as president, treating customers and employees like family. With over 26 years in the HVAC industry, he oversees operations while maintaining the company's founding commitment to quality and customer satisfaction.
Questions
What HVAC services do you offer for residential customers?
We provide complete residential HVAC services including system installation, preventive maintenance, emergency repairs, duct cleaning, and indoor air quality solutions tailored to homeowners' needs.
Do you offer commercial HVAC services?
Yes, we specialize in commercial HVAC solutions covering new installations, system upgrades, preventive maintenance, and emergency repairs for businesses of all sizes.
Are your technicians certified?
All our technicians are factory-trained and certified to work on all HVAC makes and models, with specialized training in Carrier products as an authorized dealer.
Do you provide emergency HVAC services?
Yes, we offer emergency repair services for urgent HVAC issues with prompt response times to minimize discomfort and system downtime.
What areas do you serve?
We serve residential and commercial customers throughout the Los Angeles area, including Simi Valley, Thousand Oaks, Beverly Hills, and Santa Clarita.
Do you offer service agreements?
Yes, we provide customized service agreements that include scheduled maintenance, priority emergency service, and discounts on repairs and replacements for ongoing HVAC system care.