Mon-Fri: 8 AM - 5 PM | Sat: 9 AM - 2 PM Tech On-Call 24/7 for Emergencies

The Best Choice for Expert Heating and Air Conditioning Services in Irvine, Newport Beach, Mission Viejo & Surrounding Areas

McMaster Heating & Air Conditioning is Orange County’s preferred choice for high-quality HVAC services. Over the last 28 years, we have served thousands of residential, commercial, and industrial customers throughout Irvine, Newport Beach, Mission Viejo, Rancho Santa Margarita, Laguna Niguel, Yorba Linda, Anaheim, and surrounding cities and become known for consistently delivering superior results. Our honest business practices, depth of industry knowledge, exceptional workmanship, and unwavering commitment to customer satisfaction have earned us several prestigious awards as well as an average rating of 4.5 to 5 stars from more than 200 reviews.

“At McMaster Heating & Air, we’re dedicated to delivering maximum indoor comfort at the best price.”

Ron McMaster, Owner/Founder

When You Want Your Job Done Right, Call McMaster Heating & Air

The team at McMaster Heating & Air Conditioning consists of highly-trained, seasoned HVAC professionals. They are certified by NATE and receive ongoing training on the latest heating and air conditioning technologies and the leading best practices for installation, repair, and maintenance services. Because our installers all have between 15 and 40 years of experience and our service techs have more than 10 years of experience, our customers can always depend on us to dispatch technicians who will know how to get the job done right.


Reasons to Choose McMaster Heating & Air

Carrier Factory Authorized Dealer in Orange County Award-Winning Carrier Factory Authorized Dealer
Dedicated to Complete Customer Satisfaction Thousands of Satisfied Customers
Locally Owned HVAC Company Since 1996 Locally Owned, Licensed HVAC Company
We Employee NATE Certified Technicians We Employ NATE-Certified Technicians
Energy Efficiency Experts Efficiency Rating Guaranteed for All New Installs
Comprehensive 30-Point Inspection with Every Tune-Up Solutions Customized for Each Client’s Unique Needs & Budget
Expert HVAC Service & Repair Company Expert Service and Repair for All Makes & Models
Fast HVAC Service Within 24 Hours Fast Response Times - Often Within 24 Hours
Save Money with Special Offers & Rebates Up to Date with All Available HVAC-Related Rebates
Industry Leading Parts & Labor Warranties Industry Leading Warranties for New Installs & Repairs

Comprehensive Heating & Air Conditioning Services

Whether you are looking to extend the life of your current HVAC equipment, install a high-efficiency air conditioning system, or fix a furnace that suddenly stopped working, you can rely on McMaster Heating & Air Conditioning to meet all of your heating and cooling needs.

Commercial/Industrial HVAC Services (Up to 40 Tons)

  • HVAC System Design & Installation, including AHRI Efficiency Certificate
  • Ventilation System Design & Installation
  • Air Purification System Installation
  • HVAC Equipment Replacement & Repairs
  • HVAC Retrofitting for Tenant Improvements & Remodels


Customer Reviews

McMaster Heating & Air Conditioning Angi Reviews

McMaster Heating & Air Conditioning

4.9 Star Rated Angi Reviews 4.9 Stars - Based on 53 User Reviews
McMaster Heating & Air Conditioning Google Reviews

McMaster Heating & Air Conditioning

Google 4.9 Star Rating Reviews 4.9 Stars - Based on 75 User Reviews
McMaster Heating & Air Conditioning Yelp Reviews

McMaster Heating & Air Conditioning

4.6 Star Average Rating Yelp 4.6 Stars - Based on 90 User Reviews


I had McMaster install an air cond. in a rental home in may 2015 and they did a good job. I have waited until now before writing a review as i wanted to see if we had any problems. Through all the heat this summer not one problem. I am very satisfied and will use them again.

Bill J., Santa Ana, CA Via Yelp Testimonial


These guys are great. Very professional in manner and in the quality of their work. They are also very down to earth with their recommendations. Great quality installation. Met rebate compliance for Energy Upgrade California program.

Rory K., Mission Viejo, CA Via Yelp Testimonial


I recently had McMaster air replace my older a/c and furnace with newer more efficient units,what a difference why didn't I do this sooner! I highly recommend them.

Farfone V., San Juan Capistrano, CA Via Yelp Testimonial


They put in my new units, 3 years ago. When the fan went out, in a hot spell, they did their best to get it fixed immediately.

Michelle H., Trabuco Canyon, CA Via Yelp Testimonial

Click Here to Read More Reviews

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

Your Local HVAC Experts

One of Orange County’s Leading Carrier Factory Authorized Dealers

McMaster Heating and Air Conditioning is proud to be one of Orange County’s leading Carrier Factory Authorized Dealers. HVAC contractors who earn the Carrier Factory Authorized Dealer distinction have proven their commitment to excellence by meeting the following requirements:

  • Commitment to Delivering Exceptional Comfort & Value
  • 100% Customer Satisfaction Guarantee
  • Exemplary Customer Satisfaction Scores & Ratings
  • Ongoing Factory Training
  • Employ NATE-Certified Technicians
  • Proper Local Licenses & Insurance Coverage

Less than 3% of Carrier dealers nationwide achieve and maintain the “Factory Authorized Dealer” status. Not only has McMaster Heating & Air met the strict qualifications to maintain the Carrier Factory Authorized Dealer title year after year, but McMaster has also won Carrier’s most prestigious award, the President’s Award, 12 times over the last 12 years. The Carrier President’s Award acknowledges Carrier dealers who exemplify exceptional leadership in HVAC expertise, customer satisfaction, business management, and operational excellence. The President’s Award essentially recognizes the very best of the best.

McMaster is the only dealer in Orange County to receive
the prestigious Carrier President's Award 12 Times



We Offer Free In-Home Estimates for New Installations


Click HERE to see all offers and rebates.

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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