About Us

Providing dependable coil solutions for over 90 years.

Since 1925, our company has manufactured quality heat transfer, refrigeration, and air handling equipment for industrial, commercial, utility, and marine markets. Our custom engineered Marlo heat transfer solutions are used in a variety of configurations to cool, heat, and dehumidify air streams for process and building comfort.

For nearly a century, we’ve built a reputation for meeting our customers’ needs with high-quality, reliable and long-lasting heating and cooling products that are custom made for each individual application. We serve a diverse array of industries – all with unique needs and challenges – from basic building comfort to complex industrial process heating and cooling applications.

All Products Made in America

We manufacture 100% of our HVAC coils and air handling units in our 180,000-square-foot manufacturing facility near St. Louis, Missouri. Our single, ISO-certified, centrally located location allows us to control quality, while offering short transit times to customers throughout the United States. In addition to manufacturing only in the USA, we also use only domestically produced materials and components in our coils and AHUs.

Since World War II, Marlo has been a proud supplier of the United States Navy. Today, and for the past several years, every new Navy vessel is equipped with Marlo coils, as well as MarloAIR air handling units for every combatant vessel that has AHUs on board. Obviously, these coils and AHUs are built to much higher standards than non-military products, and must be proven to withstand tidal motion, highly corrosive saltwater environments, explosions and more.

Our ability to consistently meet these demands demonstrates the quality and reliability we can provide for commercial and industrial applications. To read more about our experience with the Navy, read our blog story.

Quality Commitment

At Marlo, all employees are committed to continuous quality improvement in all that they do. Our intent is to meet or exceed our customers’ expectations for on-time delivery and robust product performance for all of our commercial HVAC Marlo Heat Transfer products.

Our commercial coil Quality Management System has expanded from a process into an ISO 9001 certified system. Our registrar (NQA of Acton, Mass.) conducts semi-annual surveillance audits. Additionally, Leonardo DRS can offer Marlo Heat Transfer products that comply with Section VIII of the ASME Boiler and Pressure Code. We hold a “U” Stamp for the design and fabrication of Unfired Pressure Vessels. This system is monitored by both an authorized inspection agency in accordance with the National Board as well as a NUPIC utility

Our History

Since 1925, our company has manufactured quality heat transfer, refrigeration, and air handling equipment for industrial, commercial, utility, and marine markets. Our custom engineered Marlo heat transfer solutions are used in a variety of configurations to cool, heat, and dehumidify air streams for process and building comfort.

Contact

Commercial Coil & AHU Sales

[email protected]

+1 636 677 6600, Opt. 2