(925) 7AC-HEAT

24/7 Emergency Service

Professional HVAC Services

We make your
comfort our

We have over two decades of experience in residential and commercial HVAC with specialties in building automation.  

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DHA Mechanical, Inc.

Residential & Commercial HVAC Services Provider

The mission of DHA Mechanical, Inc. is to provide the most practical and effective solutions for heating, cooling, ventilation and indoor air quality needs. We are committed to helping our customers maintain their equipment, peak system performance, and reduce energy consumption with practical HVAC solutions, and quality products and efficient service.

Maintain versus Fixing

Did you know that Annual Preventative Maintenance is often cheaper than an Emergency repair!

Complete Diagnostic and Honest Assessments

Our skilled technicians are well trained in diagnosing and offering only the services that you actually need to keep your heating and cooling systems safe and efficient.

We provide detailed estimates and reasonable rates for sales, service, repairs, and parts. We are a Family owned business and do not employ salesmen or operate on a commission basis. You never have to worry about any hidden costs or surprises once your HVAC project is complete. 

What We Do

DHA Mechanical Services


DHA Mechanical has over 20 years of experience designing, building, installing and maintaining cooling systems


Providing heating repairs, installations, and routine system maintenance for commercial and residents throughout the Bay Area.

Air Controls

Do you know your Indoor Air Quality? Short and long-term exposure to indoor air pollution can cause a range of health issues.

Rooftop Units

With a large number of our commercial clients having rooftop units we specialize in rooftop unit installs and maintenance.


Find out why companies are going with Building Automation Systems to manage their heating and air conditioning.


Replacing an existing unit or purchasing a new one we help with all phases of HVAC installation

Why Should You Choose DHA Mechanical

Our certified technicians receive the latest in industry training and continuing education to ensure the job is not only done right the first time, but to highest standard of service and quality. Our goal is to exceed your expectations by providing you with personalized service and focusing on your true comfort needs. We are your source for modern heating, cooling, ventilation equipment and servicing.

Reasons why to Choose DHA Mechanical:


Preventative Maintenance Program

How important is routine maintenance on your HVAC?

Preventative maintenance is the best way to assure that you get the most out of your heating and air conditioning system, extend its life, and ensure that it runs at its peak efficiency at all times.  While some HVAC breakdowns are unavoidable, our maintenance program can help prevent major problems and prepare your unit for when you need it most. 

What’s included:

Service Areas

Air Conditioning Repairs and Replacements

DHA Mechanical provides residential & commercial HVAC contractor services throughout the  bay area, with offices in both Brentwood and Tracy.