GreenSeam Industries

GreenSeam Industries GreenSeam Industries is the best source for factory sealed pipe and fittings in North America. This allows us to deliver consistent, high quality products fast.

Here at GSI, we strive to provide a completely factory sealed pipe and fittings system for the low pressure side of commercial and residential HVAC systems. Our system provides a SMACNA Class 3 seal without needing to apply additional sealants or tapes, saving you time and money. Our products are Union Made in Western Pennsylvania in our state of the art manufacturing facility. GSI products improv

e your job site performance and finished project quality by reducing time on the job and installation cost. GSI has long been an advocate of Green Building standards. Our components are key elements of today’s sustainable HVAC systems. We are an active member of the U.S. Green Building Council (USGBC) and other Green Building organizations. Our engineering staff has pioneered an innovative duct system to simplify complex HVAC industry problems, making GSI one of the best sources for engineers and contractors, nationwide.

Forever grateful as we remember and honor our heroes for their service and sacrifice.GreenSeam will be closed for Memori...
05/22/2026

Forever grateful as we remember and honor our heroes for their service and sacrifice.

GreenSeam will be closed for Memorial Day on Monday, May 25, 2026. Normal business operations will resume on May 26.

Have a safe and happy Memorial Day weekend!

04/22/2026

Today, we’re celebrating Earth Day, but sustainability is a year‑round commitment here at DMI Companies. 🌍

From reducing waste and improving operational efficiencies to making responsible, sustainable choices in our work, we’re focused on building solutions that are better for our communities and our planet—today and every day. 💚

GreenSeam Plus is more than just pipe—it’s a game-changer. The factory-sealed Green Seam Plus snap-lock pipe and fitting...
04/17/2026

GreenSeam Plus is more than just pipe—it’s a game-changer.

The factory-sealed Green Seam Plus snap-lock pipe and fittings system ensures a safer, faster installation while significantly reducing labor costs.

Learn more about GreenSeam Plus at greenseamind.com.

Built for efficient airflow, energy savings, and better indoor air quality, steel duct is the superior alternative to fl...
04/08/2026

Built for efficient airflow, energy savings, and better indoor air quality, steel duct is the superior alternative to flexible duct connectors to deliver lasting value where it matters most.

Ready to stop wasting energy and start saving? Read the full article at greenseamind.com/news.

04/06/2026

DMI Companies has proudly promoted energy efficiency and supplied green products to the commercial and industrial building industries since 1978.

Today, it’s not just our products that are sustainable, but sustainability has become a part of everything that we do, from our operations to our personal conduct. For us, Earth Day doesn’t just come once a year on April 22—it’s every day.

Throughout the month, we’ll be doing a green takeover across all DMI Companies’ accounts to share our sustainable history with you!

Wishing you an egg-stra safe and happy Easter weekend! 🌷GreenSeam’s PA and VA facilities will be closed for Good Friday ...
04/02/2026

Wishing you an egg-stra safe and happy Easter weekend! 🌷

GreenSeam’s PA and VA facilities will be closed for Good Friday on April 3, 2026. Normal business operations will resume on Monday, April 6.

The 2026 AHR Expo has officially begun, and the GreenSeam team is here to showcase the best of HVAC pipe and fittings.If...
02/02/2026

The 2026 AHR Expo has officially begun, and the GreenSeam team is here to showcase the best of HVAC pipe and fittings.

If you’re here at the expo, be sure to stop by to see us at booth in the Central Hall!

02/02/2026
Just a few more days until AHR! If you’re heading to the 2026 AHR Expo on February 2-4 in Las Vegas, Nevada, be sure to ...
01/30/2026

Just a few more days until AHR! If you’re heading to the 2026 AHR Expo on February 2-4 in Las Vegas, Nevada, be sure to stop by to see us at booth in the Central Hall!

We can’t wait to see you there!

Address

210 5th Street
Charleroi, PA
15022

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

(866) 285-5222

Website

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