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Reliable commercial HVAC solutions from Donohue

Since 1976, Donohue Commercial Service has been serving businesses in Tulsa, Oklahoma with integrity, consistent quality, and attention to detail. With our focus on preventative maintenance and performance guarantee, we deliver commercial HVAC solutions and services that keep your business running, while saving you time and money.

How Donohue Commercial Service provides superior commercial HVAC solutions

We’re the largest employer of certified HVAC professionals in Oklahoma and a member of the nationwide LINC network. Our tradesmen provide quality service, whether you need us to design, engineer, retrofit, repair or maintain your commercial HVAC systems.
HVAC solutions from Donohue help you reduce energy costs for heating and cooling systems with energy-efficient HVAC equipment. And our maintenance and repair services help you avoid costly repairs while improving indoor air quality in your commercial buildings.

Why choose United Mechanical?

Let United Mechanical keep your HVAC, plumbing, and other commercial mechanical equipment in good condition, resulting in less downtime, fewer repairs, and a better environment for your employees and customers. We provide repair, maintenance, and construction services, adhering to LINC network standards of service so you know you can trust our work.

Our expert staff is ready to give you peace of mind with high-quality solutions delivered with excellent customer service. From our 24/7 emergency services to our personalized points of contact for customers, we make every effort to be there for you and your business every step of the way.

Reliable repair and maintenance services from Donohue

Our LINC service agreements

Commercial HVAC services we offer

Our HVAC professionals offer a wide range of high-quality HVAC solutions and services, including:

  • LINC Service Agreements
  • 24-hour Emergency Service
  • Centrifugal Chillers
  • Absorption Chillers
  • Reciprocating Chillers
  • Packaged A/C Units
  • CFC Reclamation/Banking
  • DDC and Pneumatic Controls
  • System/Building Analysis
  • Energy Management
  • Vibration Analysis
  • Medium & Low Temp Refrigeration
  • Eddy Current Testing
  • Infrared Analysis
  • Air Handling Units

Serving commercial buildings across industries

We serve customers in all kinds of industries, ensuring that their HVAC systems and equipment meet their facilities’ needs and allow their businesses to operate smoothly. Donohue Commercial provides services and solutions for:

  • Hospitals
  • Universities
  • Data Centers
  • Banks
  • Medical Facilities
  • Temp Sensitive Warehouses/Storage
  • Offices
  • Houses of Worship
  • Manufacturing

"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, I promise you'll be happy with your decision."

Shawn Driver | Principal L5 Construction

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See how Donohue’s commercial HVAC solutions can support your business