On New Installations Contact AC & Heating Company

Proudly Serving Glendora, Azusa, West Covina & The San Gabriel Valley Since 1982

Dedicated to Maximizing Your Indoor Comfort & Energy Efficiency

Family Owned & Operated Affordable Experienced Honest

About NES Mechanical - Heating and Air Conditioning Experts Since 1982

NES Mechanical has been dedicated to meeting the indoor comfort needs of homeowners and businesses throughout the San Gabriel Valley for more than 34 years. As a family-owned and -operated HVAC company, we are personally invested in delivering the best possible service to our customers. Having served tens thousands of satisfied clients since 1982, you can count on us to provide expert HVAC sales, installation, repair, and maintenance service to meet your needs and budget.

Buying a new heater and/or air conditioner is a major investment you, which is why we are committed to providing honest, reliable recommendations and getting every HVAC installation job done right the first time. To ensure your satisfaction, we start by conducting a free in-home consultation. One of the most important aspects of our job is listening to you, so that we can give you a personalized heating and cooling solution; if we're not addressing your specific needs and preferences, then we're not doing our job.

In order to provide our customers with the best value in HVAC equipment, we work with the world's leading HVAC manufacturer, Carrier. Carrier is known for their superior-quality furnaces and air conditioners. They lead the industry when it comes to delivering high-efficiency heating and cooling solutions for maximum indoor comfort.

Because even the best of systems require routine maintenance to maintain their peak performance, we offer comprehensive tune-up service for air conditioners, furnaces, and heat pumps. And, if your system malfunctions, our factory-trained, NATE-certified service technicians will be here for you. Our technicians are required to see each job through from start to finish, until you are completely satisfied with the results. It's all part of our tradition of service.

Our Qualifications


License # 948151

NATE Certified HVAC Technician

North American Technician Excellence (NATE)

At NES Mechanical, our installation and service technicians have been certified by North American Technician Excellence (NATE), an independent, third-party organization that develops and promotes excellence in the HVACR industry. NATE-certified technicians have successfully passed rigorous testing in their area of specialty.

IHACI Member


NES Mechanical is a member of the Institute of Heating and Air Conditioning Industries, Inc. (IHACI). IHACI is a non-profit trade association of contractors, manufacturers, distributors, utility firms, and related businesses that has been dedicated to the education, promotion, and growth of the heating and air conditioning industry since 1948.

Carrier HVAC Dealer IHACI Member NATE Certified HVAC Technician Hero Registered Contractor
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" This is business that really cares about the customer. They were honest, professional, and helpful in every step of the process. We could not repair the old system (more than 30 years old), so they gave us options, and let us choose what was best for us . . .

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