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Who We Work With

For over 26 years Donohue Commercial Service has provided unsurpassed customer service, quality of work and attention to detail to clients across Oklahoma. 


Years of Experience

Keeping your HVAC units in tip-top shape since 1976.



Our robust divisions allow us to address your HVAC needs, no
matter what.


Team Members

We consider our experienced team to be more than employees —
they’re family.

We do good work. See what others have to say about it.

“Our relationship with United Mechanical spans 4 decades in the Oklahoma City area and it has been a privilege to partner with their staff of talented employees. They approach every project with integrity and professionalism and have been integral in the growth and development of the metropolitan area. It has been our pleasure to have partnered with United Mechanical and look forward to future opportunities to continue to strengthen our relationship and grow our community.”

“United Mechanical has been a pillar for us on multiple complex projects. Regardless of the complexity or the duration we've been able to count on United Mechanical for first-class results every single time. They truly partner with you in order to deliver the best product. If you’re considering making United Mechanical a part of your team, | promise you'll be happy with your decision.”

“United Mechanical continues to deliver a quality service—the same quality service they have provided for over 40 years. They demonstrate honesty, integrity, and a high Level of customer service and professionalism. I would recommend United Mechanical to anyone in the commercial construction industry.”

“We respect and appreciate our relationship with United Mechanical. UMC provides world class technical strength in the HVAC and plumbing trades from estimating through commissioning. We enjoy working with UMC because they value relationships above all other parts of the process. Construction can be a tough business, but with partners like UMC on our teams it makes it truly enjoyable. We highly recommend UMC and look forward to the future together!”

“We have really enjoyed working with United Mechanical on projects of varying sizes. United’s focus on detail and workmanship make them an easy choice for any of our projects.”

“I have worked with United Mechanical for the past 31 years. United has performed professionally and consistently for our long relationship. Our project range has been from $20,000 to $20,000,000 with the same service and dedication. | believe relationships are made when problems occur, or needs arise. United has risen on every occasion to solve problems, provide the solutions, or help us to the finish line with great field and office leadership.”

Who Do We Serve?

All of our divisions pride themselves on their reliability, care and attention to detail, which makes us a great fit for operations that rely on their heating and cooling equipment, not only for the comfort of their employees and patrons but to the core functions of their business as a whole.

The construction and maintenance of the HVAC systems in these types of facilities requires precision, consistency, accountability and expertise that United Mechanical is uniquely positioned to provide.


Data Centers

Hospitals & Medical Facilities

Industrial & Warehouse



Houses of Worship

Reach out now to receive quality maintenance services
from Donohue

The Donohue Commercial Service team delivers HVAC maintenance for Tulsa businesses with care and attention to detail. We understand how important having reliable heating, cooling and ventilation is to our customers’ businesses, which is why we back our quality service and solutions with a guarantee, so you’re never let down by our services.

Contact us today to see how our commercial HVAC solutions can improve your commercial building’s operations, save you money, and give you peace of mind.