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Award-Winning AC Maintenance Company Serving Orange County Since 1996

Locally Owned HVAC Company Since 1996

Serving Orange County Since 1996

Air Conditioning Preventative Maintenance Experts

Experts in Air Conditioning Preventative Maintenance

Expert HVAC Service & Repair Company

Filter and Parts Replacements

Service All HVAC Makes & Models

We Service All Major HVAC Makes & Models

We Employee NATE Certified Technicians

Experienced, NATE-Certified Technicians

Comprehensive 30-Point Inspection with Every Tune-Up

Comprehensive 30-Point Inspection with Every Tune-Up

Residential Air Conditioning Tune-Ups & Preventative Maintenance
for Orange County Homeowners

At McMaster Heating & Air Conditioning, we recommend annual AC tune-ups and preventative maintenance to keep your home air conditioning system running in optimal condition. Regular AC service helps promote the reliability, safety, and efficiency of your entire HVAC system by preventing costly breakdowns and increasing the longevity of your equipment. A well-balanced air conditioning system not only enhances indoor comfort but usually results in fewer service calls and can reduce utility bills through increased energy efficiency. Call today to schedule your spring or fall AC tune-up with one of our friendly and experienced NATE-certified service technicians.

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Customer Reviews


Ron McMaster and his team generously and patiently shared their expertise to tailor the best HVAC system for our home. I would urge anyone feeling overwhelmed by HOA and city requirements to call McMaster Heating and Air Conditioning. They will guide you through the permitting process, installation and maintenance. Call Ron and your HVAC problems will soon be solved.

John Johnson Via Google Review

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I had an excellent experience to rebuild a new heating and airconditioning system in my house. Contract, installation, repair service and management of McMaster had been done in professional way without any trouble. I really appreciate their job!

Tae Won Oh Via Google Review

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30-Point Maintenance Inspection, AC Filter Replacements, and Expert Troubleshooting & Advice for All Makes & Models

Since 1996, McMaster Heating & Air Conditioning has provided honest and reliable air conditioning maintenance services for Orange County homeowners. We have serviced tens of thousands of AC units of every make and model. Our comprehensive 30-point inspections include checking electrical components, inspecting the evaporator coil, monitoring the cooling cycle, changing the filter, checking thermostat calibration, lubricating parts, cleaning coils, and more. If we notice any signs of trouble or potential issues during your service, we will inform you immediately and provide a cost-effective solution according to your needs, budget, and indoor comfort preferences.

Professional AC Tune-Ups Performed by Highly Trained HVAC Service Technicians

Our skilled HVAC technicians are certified by NATE (North American Technician Excellence) and receive ongoing training in the latest HVAC technology. Along with their years of experience and hands-on expertise, this qualifies them to troubleshoot, diagnose, service, and repair a wide range of central air conditioners, heat pumps, rooftop units, ductless mini-split systems, ventilation systems, ductwork, and air purifiers.

When you call McMaster Heating & Air Conditioning, you can rest assured that your service technician will show up on time to your scheduled maintenance appointment in uniform, driving a marked service truck that is stocked with all the tools and equipment necessary to complete fast and efficient maintenance for your HVAC equipment. AC tune-ups can be scheduled as a standalone service or as part of our preventative maintenance program.

Schedule Your AC Tune-Up Today! We Service AC Units In and Near Irvine, Newport Beach, Mission Viejo, Laguna Hills & Rancho Santa Margarita

Call today to speak to a member of our knowledgeable team of HVAC experts. We can advise you on the best maintenance schedule for the brand, model, and year of your air conditioning system, as well as your frequency of usage. We also carry a large inventory of Carrier filters, replacement parts, and indoor air quality products at our storefront in Irvine.

Factory Authorized Carrier Dealer - McMaster Heating and Air Conditioning Carrier Certified Health Air Expert NATE Certified HVAC Technicians NCI National Comfort Institute, Inc. Ozone-Friendly Puron Refrigerant TECH Clean California Energy Solutions
AC tune-up at an Irvine home

Recent Projects

McMaster provides yearly air conditioner tune-ups for this residential client in Irvine. Regularly scheduled maintenance not only maintains the longevity, safety, and reliability of your HVAC equipment, but also helps save money on utility bills through increased energy efficiency.

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Proudly Serving All of Orange County

  • Aliso Viejo
  • Anaheim
  • Brea
  • Buena Park
  • Costa Mesa
  • Coto De Caza
  • Cypress
  • Dana Point
  • Dove Canyon
  • Foothill Ranch
  • Fountain Valley
  • San Juan Capistrano
  • Santa Ana
  • Seal Beach
  • Southern California
  • South Orange County
  • Stanton
  • Tustin
  • Villa Park
  • Westminster
  • Yorba Linda
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