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Business Details
14 Years
experience
Emergency
services
Trusted HVAC Solutions for Southern California Homes & Businesses
Stewart Air Systems was founded in 2012 by Steve and Justin Stewart, third-generation HVAC professionals committed to continuing their family's 60-year legacy of excellence. Our company prioritizes superior craftsmanship, transparent communication, and personalized solutions for every client. With over two decades of combined industry experience, we specialize in large-scale commercial installations, residential repairs, and preventative maintenance programs tailored to Southern California's climate. Our team of long-tenured technicians delivers reliable service 24/7, emphasizing quality workmanship and customer satisfaction. We maintain rigorous standards for system efficiency and safety while offering flexible financing options to accommodate diverse needs.

As a family-owned business, we treat every client's home or business as if it were our own, ensuring lasting comfort and system longevity. Our reputation for honesty, punctuality, and problem-solving has earned us enduring trust within the communities we serve. We actively invest in ongoing training and modern equipment to maintain technical expertise across all HVAC systems. This unwavering dedication to excellence has established Stewart Air Systems as a premier choice for comprehensive heating and cooling solutions in Southern California.
Services
Large Scale Projects Small Repairs Preventative Maintenance System Installations Emergency Repairs Commercial HVAC Residential HVAC Consultations
Details
  • Year established: 2012
Highlights and features
  • We offer 24/7 emergency HVAC service with same-day availability
  • Our technicians have 20+ years combined experience in HVAC systems
  • We provide free in-home or virtual consultations with no-obligation estimates
  • Family-owned business with three generations of HVAC expertise
  • We guarantee transparent pricing with no hidden fees or surprise charges
What people say
Great service Very reliable Quick to respond Transparent with their work Fair prices
Services
Large Scale Projects
We specialize in complex HVAC installations for new construction and major renovations. Our team handles commercial rooftop units, multifamily systems, and complete ventilation overhauls. With expertise in architectural compliance and building codes, we deliver tailored solutions for general contractors and business owners while maintaining strict budget and timeline controls.
Small Repairs
Our technicians address minor HVAC issues with the same precision as large projects. From duct modifications to system corrections, we prioritize cost-effective solutions that protect your investment. We specialize in resolving installation errors and improving efficiency through targeted repairs while maintaining transparent pricing for homeowners.
Preventative Maintenance
Our maintenance plans extend HVAC system lifespans through regular inspections and proactive care. We monitor electrical components, mechanical parts, and drainage systems to prevent failures. Clients receive automatic scheduling and performance tracking to ensure optimal efficiency while avoiding emergency situations through year-round system monitoring.
Emergency Repairs
We provide urgent HVAC assistance outside regular business hours for critical system failures. Our rapid response team addresses heating emergencies in winter and cooling crises during summer peak demand. This service includes last-minute scheduling and immediate problem resolution to restore comfort and safety in residential and commercial properties.
System Installations
We install new heating and cooling systems with expert ductwork design and equipment selection. Our team recommends energy-efficient models and hybrid systems tailored to property requirements. We handle complete replacements including concrete cutting for vent installation and HEPA air purification integration for improved indoor air quality.
People
Steve Stewart
Co-Owner
Third-generation HVAC professional with 20+ years experience. Licensed contractor since 2012, specializing in system design and quality control. Focuses on client relationships and operational excellence while maintaining family business values.
Justin Stewart
Co-Owner
Joined the trade in 2004 after high school. Handles technical operations and field supervision. Known for technical expertise in complex installations and commitment to hands-on problem solving for residential and commercial clients.
Destiny Stewart
Office Manager
Manages client communications and scheduling since joining in 2012. Provides customer service support and coordinates team logistics. Recognized for responsiveness and maintaining operational efficiency across all service departments.
Questions
What HVAC services do you offer?
We provide complete HVAC solutions including installations, repairs, maintenance plans, emergency service, and system consultations for residential and commercial properties.
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency HVAC repair with same-day availability for critical heating and cooling system failures.
Are financing options available?
Yes, we offer financing through Payzer for qualifying HVAC installations and major system replacements.
What areas do you serve?
We serve all of Southern California, including Los Angeles, Orange, Riverside, and San Bernardino counties.
Do you provide free estimates?
Yes, we offer free in-home or virtual consultations with no-obligation estimates for all HVAC projects.
How can I schedule service?
Call us at (626) 498-7770 or book online through our website for immediate scheduling of repairs, maintenance, or consultations.