Cool Cash Rebates from Carrier are Back!

Learn More

A New System is Within Your Reach

Save $4500 on an Energy Efficient Replacement System. FINANCING AVAILABLE up to 15 years on approved credit.

McMaster offers the best option for your home and wallet.
*Requires minimum standard/improvements for Energy Upgrade California Program. Call for full details.

Learn More

Orange County Heating and Air Conditioning Service


McMaster Air Conditioning has Received the Carrier President’s Award
Five (5) Years Running

Carrier Air Conditioning Contractor

What Makes McMaster your #1 Choice for Home Comfort:

• Proven Results – Highest Energy Savings
• Engineered Approach – No Guessing
• Accurate Equipment and Duct Sizing with ACCA Load Calculations
• Home Leakage Testing & Sealing
• Create Healthier Indoor Air Quality
• Qualified Contractor for all Rebate and Tax Incentive Programs
• Duct Leakage Testing & Sealing
• A Partner for Life – Established in the Community learn-more-button


Mission Statement

Our mission is to perform the highest level of service and quality workmanship for our customers. We will establish long lasting relationships with our customers by exceeding their expectations and by gaining their trust through exceptional performance by every member of our company. Our pledge is to maintain the highest levels of integrity and honesty with our vendors, professional associates and customers.


Before You Call

Is your air conditioning and heating system on the fritz? Would a new system’s cost savings outweigh the cost of repairing your existing equipment? Read our helpful tips to find out the best option for you.



Our customers are what keep us striving for the best. We look to provide the best service to build relationships that last. Want to hear it first hand? Read our real customer reviews, or share your own experience! We can’t wait to hear from you.


Internet Special

Free thermostat upgrade to Carrier Touch WiFi Thermostat with any Carrier Infinity equipment install. Call today to get yours!