R.F. Knox Company, Inc. is a trusted industry leader in commercial HVAC ductwork fabrication and installation, serving Atlanta and the Southeast for more than 110 years. Businesses across healthcare, education, commercial, and industrial markets rely on our team to deliver high-quality, reliable, and innovative HVAC solutions built to perform for decades.

Custom HVAC Ductwork Fabrication & Installation Services

Our experienced sheet metal craftsmen design, fabricate, and install custom HVAC ductwork, fittings, and complete HVAC systems with a focus on precision, safety, and efficiency. From large-scale commercial construction to specialty industrial systems and complex architectural designs, R.F. Knox delivers HVAC solutions engineered for long-term performance.

Our Commercial HVAC Capabilities

• Commercial HVAC ductwork fabrication
• Custom sheet metal fabrication
• HVAC system installation
• Industrial and specialty HVAC system
• Architectural sheet metal solutions

Why Choose R.F. Knox for Commercial HVAC Projects?

Choosing the right HVAC contractor matters. R.F. Knox combines deep industry expertise with modern fabrication technology to deliver dependable results on every project.

• Proven HVAC Expertise – Over a century of sheet metal and HVAC innovation
• Custom HVAC Solutions – Ductwork and fittings tailored to your project’s requirements
• Trusted Commercial Partner – Experience across healthcare, education, commercial, and industrial sectors
• Commitment to Quality & Safety – Built on our core values: Safety, Integrity, Quality, Accountability, and Reliability

Award-Winning HVAC Craftsmanship & Safety

R.F. Knox is recognized for excellence in commercial HVAC fabrication, installation, and jobsite safety.

• SMACNA Contractor of the Year (2022)
• Cobb Chamber of Commerce – Top 25 Small Business of the Year (2010)
• Yates Insurance & Amerisure – Safety Commitment Award (2013–2018)
• Baxter Lab – Safety Award (2014)
• Holder Mustang NBY Program – Subcontractor of the Month (February 2022)
• Mustang WCK Program – Subcontractor of the Month (September 2018, March 2019)