Business Details
30 Years
experience
Emergency
services
Trusted HVAC Services in Irvine, CA
McMaster Heating & Air Conditioning Heating & Air Conditioning has been Orange County's trusted HVAC contractor since 1996, specializing in high-quality heating, air conditioning, and indoor air quality solutions. As a family-owned business and 12-time Carrier President's Award winner, we combine decades of industry experience with NATE-certified technicians to deliver superior results for residential and commercial clients. Our commitment to excellence is demonstrated through personalized service, factory-trained expertise, and a track record of over 28 years serving Irvine, Newport Beach, Mission Viejo, and surrounding areas.We guarantee 100% satisfaction on all new installations, offer industry-leading warranties, and maintain rigorous standards through ongoing training and advanced diagnostic tools. With thousands of satisfied customers and an average 4.5-5 star rating from 200+ reviews, our reputation for honest business practices and exceptional workmanship has made us Orange County's preferred HVAC provider.
Services
AC Installation
Heater Repair
Furnace Replacement
HVAC Maintenance
Ductless Systems
Indoor Air Quality
Commercial HVAC
System Tune-Ups
Emergency Repairs
Energy Efficiency
Details
- Year established: 1996
Highlights and features
- 12-time Carrier President's Award recipient for excellence in HVAC services
- NATE-certified technicians with 10-40 years of industry experience
- 100% satisfaction guarantee on all new HVAC installations
- Factory-trained specialists for Carrier and all major HVAC brands
- 24/7 emergency service with response times often under 24 hours
Associations and certifications
- Carrier Factory Authorized Dealer
- NATE-certified
What people say
Award-Winning Service
Professional Technicians
Energy Efficiency
Prompt Emergency Response
Lifetime Warranty
Services
AC Installation
Professional air conditioning installation services using Carrier's latest energy-efficient models. Our whole-home approach includes load calculations, AHRI-certified efficiency ratings, and customization for optimal comfort. Technicians receive ongoing factory training to ensure proper installation of all system components including ductwork, thermostats, and air quality accessories.
Heater Repair
Expert repair for all heating system makes and models including Carrier, Bryant, and Trane. Our NATE-certified technicians use advanced diagnostics to identify issues with 10-40 year experienced precision. Services cover everything from minor repairs to complete system overhauls with emergency service available during extreme weather conditions.
HVAC Maintenance
Comprehensive 30-point maintenance inspections for residential and commercial HVAC systems. Includes filter replacement, coil cleaning, thermostat calibration, and efficiency testing. Regular maintenance extends equipment lifespan, reduces energy costs, and maintains manufacturer warranty validity through documented service records.
Ductless Systems
Specialized installation and service for ductless mini-split heating and cooling systems. Our certified technicians handle multi-zone configurations, wall-mounted units, and ceiling cassette systems. Services include proper sizing calculations, refrigerant line installation, and smart thermostat integration for maximum energy efficiency in homes without existing ductwork.
Indoor Air Quality
Complete indoor air quality solutions featuring Carrier and iWave air purification systems. Services include installation of whole-home air scrubbers, humidity control systems, and HEPA filtration units. Our experts address allergens, VOCs, and particulate matter to create healthier living environments with measurable improvements in air quality metrics.
People
Ron McMaster
Owner/Founder
With over 28 years of HVAC industry leadership, Ron McMaster Heating & Air Conditioning Heating & Air Conditioning established the company's reputation for excellence through hands-on management and technical expertise. He personally oversees complex installations and maintains direct client communication, ensuring adherence to the company's core values of honesty, reliability, and superior craftsmanship.
Questions
What HVAC services do you offer in Orange County?
We provide full-service HVAC solutions including AC installation, furnace repair, system maintenance, ductless mini-split systems, indoor air quality products, and emergency repair services for residential and light commercial clients throughout Orange County.
Are your technicians certified and trained?
All our technicians are NATE-certified with 10-40 years of experience. They receive ongoing factory training through Carrier's certification programs and maintain up-to-date knowledge of the latest HVAC technologies and installation best practices.
Do you offer emergency HVAC services?
Yes, we provide after-hours emergency service for urgent heating and cooling needs. Our team typically responds within 24 hours for critical system failures during extreme weather conditions in Irvine and surrounding areas.
What financing options are available?
We offer Wells Fargo financing options with approved credit for new HVAC installations. Our financing packages help customers upgrade to energy-efficient systems while maintaining budget-friendly monthly payments with competitive interest rates.
What makes you different from other HVAC companies?
As a 12-time Carrier President's Award winner with 28 years of local experience, we combine factory-trained expertise with personalized service. Our NATE-certified team guarantees 100% satisfaction on installations and maintains 4.5+ star ratings through consistent quality and ethical business practices.
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