About Smith Service Corporation

Trusted Commercial HVAC & Mechanical Contractor

Full-service mechanical contractors serving North Alabama from Birmingham to Huntsville

Smith Service Corporation was founded in 1971 in Decatur, Alabama to service and maintain commercial HVAC and refrigeration systems. Quickly, the scope of our work broadened to include all areas of mechanical contracting. From the beginning, Smith Service Corporation has held to the highest standards of customer satisfaction making us a leader in industry know-how, reliability, and trust.

Specializing in all Commercial HVAC, Mechanical, Fabrication, and Refrigeration needs!

With the advantage of almost 50 years of experience, along with modern equipment and skilled craftsmen, we can easily meet your deadlines and quality expectations.

When you have a project that requires precision and top-quality, look no further than Smith Service Corporation.

We specialize in all HVAC issues including:

  • All Brands of HVAC Equipment
  • Chillers and Boilers
  • Cooling Towers and Water Flow Systems
  • Computer Room Systems
  • Humidification and Dehumidification
  • Ventilation
  • Refrigeration
  • Controls

HVAC Fabrication and Installation Including:

  • Sheet Metal and Steel Fabrication
  • Piping
  • Plumbing
  • Welding

We're here to help keep you comfortable

Proudly Serving North Alabama

Smith Service Corporation serves all of North Alabama, from The Tennessee State Line to the North Birmingham, AL area. We can handle all commercial HVAC-related issues, all mechanical issues, and all fabrication needs of your building, office, church, organization, or industrial complex. Contact us today for more information!

We handle all HVAC related issues for commercial applications!


We specialize in sheet metal, metal plate, and structural shape fabrication work.

Leave your mechanical issues to us! We specialize in all areas of mechanical contracting.

Don't just take our word for it!

Read Our Reviews!


Smith Service Corp did an excellent job on our building's HVAC. Couldn't be happier with the result.

Thomas R.

Google Review

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