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McMaster Heating & Air Conditioning

Aliso Viejo’s Trusted HVAC Company Since 1996

Providing Aliso Viejo With High-Quality Air Conditioning and Heating Services for More Than 25 Years

Since 1996, McMaster Heating & Air Conditioning has provided Aliso Viejo with high-quality, cost-effective heating and air conditioning services. We are an award-winning HVAC company and Carrier Factory Authorized Dealer with over 40 years of experience and thousands of satisfied clients. With a team of NATE-certified technicians and extensive industry knowledge, we are experts in a wide range of residential, commercial, and industrial heating and air conditioning sales, design, installation, repair, and maintenance services. We are dedicated to providing 100% customer satisfaction, exceptional workmanship, and operational excellence and go out of our way to provide superior service to every client.

Our residential and commercial HVAC services for Aliso Viejo include, but are not limited to:

Family Owned & Operated, Full-Service HVAC Company
Serving Aliso Viejo, CA

McMaster Heating & Air Conditioning is a licensed, family-owned and operated, full-service HVAC contractor serving Aliso Viejo homeowners, businesses, contractors, and property managers. Over the years, they have honored us with numerous positive online reviews and frequently refer us to their family, friends, and associates. We are a ten-time winner of the prestigious Carrier President's Award, which is only granted to Carrier dealers who demonstrate an unwavering commitment to delivering exceptional comfort and value.

Reasons to Choose McMaster Heating & Air

Carrier Factory Authorized Dealer in Orange County Award-Winning Carrier Factory Authorized Dealer
Dedicated to Complete Customer Satisfaction 1,000s 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

Free Estimates for Heating & Air Conditioning Installations & Replacements Throughout Aliso Viejo and Surrounding Areas

We specialize in providing Aliso Viejo home and business owners with high-performance air conditioners, heaters/furnaces, ductless mini-split systems, heat pumps, and indoor air quality products from Carrier, the inventor of the modern air conditioner. Known for their energy-efficient, quiet, and durable heating and air conditioning systems, Carrier is today's leader in innovative HVAC technology. As Aliso Viejo's preferred Carrier Factory Authorized Dealer, we offer factory-direct access to Carrier’s complete product lines of Infinity®, Performance®, and Comfort® HVAC equipment. Every system we install is backed by Carrier's 10-year parts limited warranty and comes with a 100% satisfaction guarantee for one full year.

Whether you need a new A/C unit for your home, a replacement furnace for your school, or a ductless mini-split installation for a server room, McMaster Heating & Air Conditioning has the skills and expertise to deliver a high-quality solution at a great price.

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Ductless Mini-Split System Installation, Repair, & Maintenance

Installation, Repair, and Maintenance Services for Ductless Mini-Split Systems

At McMaster Heating & Air, we offer Aliso Viejo expert mini-split system installation, repair, and maintenance services at competitive prices. Because they deliver heating and cooling directly to an intended space, ductless mini-split systems are ideal for use in server rooms, garages, detached offices, and sunrooms. They are also a cost-effective choice for creating additional zones in commercial buildings and large homes. Call us today to schedule an on-site estimate or service call with a member of our experienced staff.

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Cost-Effective Heating and Air Conditioning Repair & Maintenance Services In and Near Aliso Viejo for All Major HVAC Brands

For prompt and reliable heating and air conditioning repair and maintenance services in Aliso Viejo, call on McMaster Heating & Air Conditioning. Our experienced NATE-certified technicians receive ongoing training in the newest advancements in HVAC technology. They are highly qualified to troubleshoot, diagnose, service, and repair all makes and models of HVAC systems. During your service call, we will perform a thorough inspection of all essential systems, components, and safety controls. Repairs are completed using the industry best practices, quality parts, and cutting-edge tools and equipment.

As a general rule, we recommend preventative maintenance for home heaters and air conditioners on a biannual basis and more frequent quarterly or monthly maintenance for commercial HVAC systems that undergo heavy usage. Our affordable preventative maintenance services can be scheduled on an ongoing basis as part of a long-term maintenance agreement, or as a standalone service. Clients are also welcome to visit our Irvine office to purchase Carrier replacement filters, parts, and indoor air quality products.

We Service All Major Makes & Models of HVAC Equipment

  • Carrier
  • Bryant
  • Rheem
  • York
  • American Standard
  • Fujitsu
  • Trane
  • Mitsubishi Electric
  • Daikin
  • Goodman
  • Lennox
  • And more!

Aliso Viejo’s Best Choice for Indoor Air Quality Products and Whole-Home Filtration Systems From Carrier

McMaster Heating & Air provides the latest IAQ products for Aliso Viejo homes and businesses, including air purifiers, humidifiers, dehumidifiers, filtration systems, spot ventilation systems, commercial air scrubbers, and more. We offer a wide range of indoor air quality solutions to promote healthy home and work environments and can provide expert advice on choosing the best IAQ products for your needs and budget. For more information or to schedule an on-site appointment, give us a call today at (949) 481-7995.

Carrier’s Indoor Air Purifiers, Filtration Systems

Featured Product: Carrier’s Infinity DGAPA Air Purifier

Carrier is well known for its highly effective indoor air quality products, including the InfinityTM Air Purifier® DGAPA (MERV 15). Designed with Carrier's proprietary Captures and KIllsTM technology, it works seamlessly with your HVAC system to eradicate up to 95% of particulates, including pollen, animal dander, bacteria, and other potentially harmful pollutants.

Give us a call today to learn more. As a Carrier Factory Authorized Dealer, we offer factory-direct pricing on Carrier's whole-house air purifiers, filtration systems, and spot ventilation systems.

View Carrier Product Catalog

HVAC System Design, Installation, and Maintenance Services for Commercial & Industrial Businesses In & Near Aliso Viejo, CA

McMaster Heating & Air Conditioning specializes in cost-effective commercial and industrial HVAC system services for Aliso Viejo. Our owner, Ron McMaster, has over 40 years of experience in commercial and industrial HVAC system design, installation, repair, and maintenance. He and his team have completed work on thousands of commercial and industrial buildings and are experts in correctly sizing HVAC equipment to maximize efficiency and cost-effectiveness. Just a few of our current and former clients include prominent names such as 7-Up Bottling Company, Jurgens, and Sunkist. Whether you need a rooftop unit change-out, ductwork repair services, or a custom fan coil installation, you can trust McMaster Heating & Air Conditioning to deliver exceptional results on time, within budget, and to the highest industry standards. Every system we sell also comes with an AHRI Efficiency Certificate that includes an exact HVAC efficiency rating.

Give us a call today to schedule a service call or on-site consultation. We offer prompt, reliable service for our commercial clients, and have a service technician on-call to provide emergency repair services and help reduce operational downtime for your business.

Special Offers & Rebates

Click Here to View All Available Offers & Rebates

Customer Reviews

McMaster Heating & Air Conditioning Customer Lobby Reviews

McMaster Heating & Air Conditioning

4.9 Star Rated Customer Lobby Reviews 4.9 Stars - Based on 69 User Reviews
McMaster Heating & Air Conditioning Google Reviews

McMaster Heating & Air Conditioning

Google 4.9 Star Rating Reviews 4.9 Stars - Based on 49 User Reviews
McMaster Heating & Air Conditioning Yelp Reviews

McMaster Heating & Air Conditioning

4.9 Star Average Rating Yelp 4.5 Stars - Based on 57 User Reviews


We called McMaster Air to replace our heating and air conditioning unit. James was great answering all our questions and modifications to the proposal. He delivered the proposals as promised and was very punctual answering emails. . .

Matt I., Aliso Viejo, CA Via McMaster Heating & Air Conditioning Customer Lobby Reviews


McMaster's was able to diagnose and solve problems that others could not and provided service to correct the problem. They also worked effectively with the equipment manufacturer. Great results.

John G., Newport Coast, CA Via McMaster Heating & Air Conditioning Customer Lobby Reviews


Very happy with the lob they did replacing the heating / air conditioning system. Installers were very professional and punctual .I would use them again.

Glenn Barton Via Google Review

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

McMaster is the only dealer in Orange County to receive
the prestigious Carrier President's Award 10 times

  • 2010 Carrier President's Award Winner 2010
  • 2011 Carrier President's Award Winner 2011
  • 2012 Carrier President's Award Winner 2012
  • 2013 Carrier President's Award Winner 2013
  • 2014 Carrier President's Award Winner 2014
  • 2015 Carrier President's Award Winner 2015
  • 2016 Carrier President's Award Winner 2016
  • 2017 Carrier President's Award Winner 2017
  • 2019 Carrier President's Award Winner 2019
  • 2020 Carrier President's Award Winner 2020


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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