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Grunau Company is a national leader in HVAC engineering services and installation. We design, fabricate and install a wide array of HVAC systems including commercial, industrial and institutional. We go beyond traditional systems and fabricate unique projects including exhaust systems, underfloor systems, dust collection, and process heating and cooling systems.

Our sheet metal team fabricates special ductwork of any shape or size for your HVAC system. Whether you need rectangular or spiral, kitchen exhaust or heavy gauge work, we offer the highest quality product. Complementing our sheet metal shop, our extensive pipe fabrication facilities provide superior prefabricated materials and pipes. Our teams work together, ensuring timely material flow and minimizing on-site work.

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