Nicholas Mechanical

Who We Are

Who We Are



Established in 2014. With over 20 years of experience, Nathan and Nicholas Mechanical have earned the trust and business of a loyal customer base all over Orange County and surrounding areas. Founded by a young entrepreneur, Nathan and his team set to change the industry standard with their quality service, open communication, and up front pricing. From residential problem solving to big commercial accounts we are here to solve all your HVAC needs.

Meet the Owner


Nathan Rosas – Owner/President

Nathan started Nicholas Mechanical with a dream to provide excellent customer service at affordable pricing. At the young age of 13, he started learning about air conditioning from his father, who was an extremely skilled and talented commercial technician and eventually went to work with his father at the same company. With over 15 years of experience, Nathan fulfilled his dream and opened Nicholas Mechanical’s doors and chose this industry because he believes that honesty and options are the most important thing for our customers. We actually do what we say we're going to do and ensure that the job is done right the first time.


Our Mission

At Nicholas Mechanical HVAC, Inc., we pride our company on reliability, great communication, integrity and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your project. Always on time customer satisfaction is top priority. When you choose Nicholas Mechanical, you are choosing NATE certified and screened technicians who are the some of the best in the industry. We serve the Orange County, Inland Empire, and Los Angeles areas.

Better Business Bureau

Nicholas Mechanical is proud member of the Better Business Bureau. BBB accredited means that the company has agreed to uphold the BBB’s accreditation standards, which includes sound advertising and customer service practices that enhance customer trust and confidence in the business.

License Information:

State: CA | Trade: California - C-20 HVAC | License #: 992453 | Expiration: 02/28/2019