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McMaster Heating & Air Conditioning

Rancho Santa Margarita’s Trusted HVAC Company Since 1996

Call McMaster for Award-Winning Residential and Commercial Heating & Air Conditioning Services in Rancho Santa Margarita, CA

McMaster Heating & Air is a licensed and experienced heating and air conditioning company serving residential, commercial, and industrial customers throughout Rancho Santa Margarita and surrounding areas. Our team of knowledgeable, NATE-certified HVAC professionals provides high-quality heating and air conditioning sales, installation, replacement, repair, and maintenance services to local homeowners, contractors, property managers, and commercial businesses, including warehouses, churches, schools, manufacturing plants, industrial facilities, retail stores, offices, and more.

Licensed - Family Owned - Highly Experienced - Honest

Founded in 1996, our locally and family-owned business is known for delivering high-quality workmanship, exceptional service, and reliable results. We’re proud to be Rancho Santa Margarita’s leading Carrier Factory Authorized Dealer and hold ourselves to the industry’s highest standards of quality and training. In recognition of our commitment to excellence, we have been awarded Carrier’s prestigious President’s Award ten years in a row.

When you want the job done right, call McMaster Heating & Air. Our comprehensive range heating and air conditioning services include:

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

Custom-Designed, Expertly Installed Carrier HVAC Systems for Rancho Santa Margarita Homes and Businesses

At McMaster Heating & Air, our HVAC specialists are qualified to identify and recommend indoor comfort solutions that are energy-efficient, reliable, and custom-tailored to meet your specific needs. We are highly knowledgeable of Carrier’s complete product line of furnaces, air conditioners, heat pumps, ductless mini-splits, rooftop units, air purification systems, ventilation systems, and commercial HVAC systems (up to 40 tons)—all of which are backed by Carrier’s 100% customer satisfaction guarantee and 10-year parts limited warranty.

From home performance testing to benchmarking load calculations and leakage testing, we always use a holistic approach to ensure that your new system is sized correctly. To help you stay on budget, we offer flexible financing options on qualifying purchases through Wells Fargo Bank, N.A* and are highly knowledgeable of utility rebates and manufacturer rebates available. Clients who choose our installation services also automatically qualify for preferred status and will receive priority scheduling for repair and service calls.

Request a Free On-Site Consultation

*Subject to credit approval.

Rancho Santa Margarita’s Indoor Air Quality Experts

Whether you’re interested in replacing, upgrading, or repairing your HVAC equipment, we can help you find an indoor air quality (IAQ) solution that works seamlessly with your system to make the air you breathe healthier. We are Rancho Santa Margarita’s experts in air filtration, humidity control, air quality, and ventilation products and have access to Carrier’s diverse range of IAQ products, including air purifiers, ventilators, air scrubbers, humidifiers, dehumidifiers, carbon monoxide alarms, and ultraviolet air-cleaning (UVS) systems.

Carrier’s Indoor Air Purifiers, Filtration Systems

Featured Product: Carrier’s Infinity DGAPA Air Purifier

One of the most effective air purifiers on the market today, Carrier’s Infinity™ Air Purifier® DGAPA (MERV 15) works silently with your HVAC system to make the air you breathe healthier. It uses Captures & Kills™ technology to trap up to 95% of particles such as pollen, animal dander, bacteria, and other pollutants.

View Carrier Product Catalog

Furnace and AC Repairs In & Near Rancho Santa Margarita, CA

Always Performed by Highly-Trained, NATE-Certified Technicians

With over 40 years of experience, McMaster Heating & Air is qualified to repair all major makes and models of furnaces, air conditioners, heat pumps, mini-split systems, and rooftop units. Our service technicians are certified by NATE (North American Technician Excellence) and are well-trained in the industry’s best practices for heating and air conditioning troubleshooting, diagnosis, and repair. If you are experiencing heating or cooling issues in or near Rancho Santa Margarita, give us a call today. Our typical hours of operation are Monday through Friday from 8:00 a.m. to 5:00 p.m. and Saturday 9:00 a.m. to 2:00 p.m., but we always have a service technician on-call to respond to emergencies and after-hours requests.

We Service All Major Makes & Models of HVAC Equipment

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

Cost-Effective HVAC Maintenance Agreements & Seasonal AC/Furnace Tune-Ups for Rancho Santa Margarita

McMaster Heating & Air offers cost-effective seasonal tune-ups and maintenance agreements for homes and businesses throughout the Rancho Santa Margarita area. By investing in the regular maintenance of your heating and air conditioning system, you can extend the life of your equipment, reduce utility costs, and increase overall performance and energy efficiency. Our maintenance services include a comprehensive 30-point inspection, during which we will check components, test gas pressure, replace the air filter, lubricate parts, clean coils, and more. If we notice any signs of trouble, we will inform you immediately and provide an honest, cost-effective solution.

Industrial and Commercial HVAC Services Available in
Rancho Santa Margarita, CA

McMaster Heating & Air specializes in designing and installing custom HVAC systems for industrial and commercial buildings of nearly any size. We have decades of experience completing J/S/D load calculations to properly size equipment and ductwork and provide an AHRI Efficiency Certificate with every new system we install.

In addition to our installation services, we offer biannual, quarterly, and monthly maintenance options to keep your business’s heating and cooling system running safely, reliably, and efficiently. We also offer fast response times to repair requests anywhere in or near Rancho Santa Margarita.

Call on McMaster for Any of the Following Commercial HVAC Services

  • HVAC System Design & Installation, including AHRI Efficiency Certificate
  • Ventilation System Design & Installation
  • Air Purification System Installation
  • HVAC Equipment Replacement & Upgrades
  • HVAC System Repair & Service
  • HVAC Retrofitting for Tenant Improvements & Remodels
  • Custom Fan Coil Unit Installation
  • Sheet Metal Ducting Design & Installation
  • HVAC System Maintenance - Biannually, Quarterly, Monthly
  • Ductless Mini-Split Design & Installation, Repair & Maintenance

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


James provided excellent consultative and installation service. Very trustworthy. I got several other quotes from his competitors and his was the best. He told me what I needed and didn't, which I really appreciated. He also called me after the install to make sure everything was running smoothly and offered to stop by just to show me a few things on the high tech thermostat.

Jonathan W., Rancho Santa Margarita, CA Via McMaster Heating & Air Conditioning Customer Lobby Reviews


I called McMaster Air & Heat after reviewing several online review sites and what stood out the most was how quickly they were able to respond and send someone out (literally next day). I was also impressed with that fact that this company did not try and upsell any other products or services, let alone try to replace unnecessary parts. They came out diagnosed the problem and fixed (the exact part) that needed to be replaced. They were honest, reliable and courteous . I intend on giving them any and all future business.

Greg U., Rancho Santa Margarita, CA Via McMaster Heating & Air Conditioning Customer Lobby Reviews


I highly recommend McMaster. Being from out of state, we didnt know what company to contact. We needed two complete heating and a/c systems installed. Both Ron and James were most helpful in finding the Carrier products that suited our needs. The McMaster technicians who installed the new system were very professional and polite.

Patricia S., Rancho Santa Margarita, CA Via McMaster Heating & Air Conditioning Customer Lobby Reviews

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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