Spiral & Oval Ductwork

Spiral Ductwork in building

Spiral duct in warehouse

Spiral duct offers a clean, contemporary look that is growing in demand across the United States.
At Hranec S.M.I., we take a leading role in designing and fabricating your entire exposed spiral ductwork “look” to help showcase your building’s architectural appearance and create a lasting impression on visitors.  Download our Catalog, or Contact Hranec S.M.I. today to learn more.

The Spiral Duct Advantage

From stunning looks to practical applications, spiral duct offers many advantages.  Your spiral duct order needs no lead time on materials.  Hranec S.M.I. fabricates spiral duct in-house, so we can turn around your spiral duct order immediately.

  • Installed cost up to 50% less than traditional rectangular duct work.
  • Exposed spiral duct work enhances your building’s architectural features.
  • Vastly reduces air leakage and noise breakout.
  • Reduces energy costs and simplifies air flow measurement.
  • Preferred by many architects, developers, and commercial building owners.
  • 4” to 70” diameter spiral duct fabrication ability.
  • 4” to 20” diameter spiral duct always in stock.
  • Antimicrobial coating available for enhanced air quality.  Perfect for application in hospitals, schools, commercial offices, day-care centers, and sports facilities.

Spiral duct, which includes round, oval, and flat oval forms, conserves energy by eliminating leaks and allowing the use of more efficient fan systems. It resists mold infiltration.  Its light weight reduces installation labor and the manufacturing process itself gives spiral duct an inherent strength due to the strong seams created during fabrication.

Union Spiral & Oval Manufacturers

Employee with spiral ductworkAlong with our Union crew, having one of the most modern production facilities, state-of-the-art coil lines, plasma tables, and Spiral-Helix tubeformers, is something we take pride in.
But it’s Hranec’s people you need to meet.  It’s their dedication to quality production, precision design, cost cutting efficiencies, and customer service that will give you the confidence to tackle the largest HVAC projects with Hranec’s expert help.
And while Spiral and Oval duct is our specialty, remember: Hranec is a full service HVAC duct supplier.  Our fabrication facilities also produce the finest traditional square and rectangular duct,  polyvinyl coated ductwork, and a wide range of specialty items, accessories, and custom metal work
Contact Hranec S.M.I. today for a fresh approach.  Our staff brings production values together with customer service to make your life easier and your project more profitable.

Service Area

Hranec S.M.I. provides quality HVAC spiral duct and traditional rectangular ductwork nationwide.  With HVAC fabrication facilities located in the Pittsburgh region, Hranec services HVAC duct work needs in Pennsylvania, Ohio, Maryland, and across the nation. No matter your location, Hranec’s dedication to providing the best lead-time, best price, and best service will win you over.  Contact Hranec S.M.I. today to learn how.

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