Flex Air

Air Handling Units, Prefabricated Central Plant

Flex Air designs and manufactures custom air handling units and prefabricated central plant solutions built around the specific requirements of each project. Its systems can integrate heating and cooling equipment, filtration, controls, fans, and other components into coordinated HVAC packages, helping simplify installation and improve system performance. Factory-built construction supports consistent quality and streamlined field installation, while flexible configurations allow systems to accommodate demanding space, performance, and application requirements. Flex Air’s engineered approach provides reliable, serviceable solutions for new construction, system upgrades, and complex HVAC applications.

FLEXAir logo with “A Miller Industries Company” written below in black and blue text on a light background.

The Experience Behind Every Recommendation

Behind every equipment solution is Havtech’s own established legacy of commercial HVAC expertise, driven by our decades of experience, extensive project history, and trusted industry relationships.

years in business
40 +
projects
500 +
partners
200 +

Product Categories

Products That Fit Your Needs

Flex Air’s custom air handling solutions deliver reliable performance, energy efficiency, and flexible designs tailored to the unique needs of each application.

General Electric Aerospace

Custom air handling unit with integrated desiccant dehumidification designed for a paint process application while incorporating customer-supplied controls to minimize on-site work.

Ford Engine Plant

A 300 HP modular steam boiler plant designed and installed on an accelerated timeline to replace aging infrastructure and support process wastewater treatment.

Hexcel Filter House

Custom-engineered high-temperature, high-pressure filter housing designed for reliable, long-lasting performance in demanding industrial applications.

What You Get When You Work With Us

When you work with Flex Air and Havtech, you gain access to custom air handling and prefabricated central plant solutions backed by local HVAC expertise and application support. Our team helps evaluate project requirements, select the right equipment, and provide design assistance for new construction, system upgrades, and retrofit applications. We coordinate with engineers, contractors, owners, and facility teams throughout the Mid-Atlantic region to support equipment integration, installation planning, technical coordination, and long-term system performance.

Applications and Industries

Designed for the Buildings You Work In

Flex Air solutions are designed for facilities that require reliable, customized air handling and central plant systems to support demanding HVAC applications. Their products are commonly used in industrial and automotive facilities, commercial buildings, data centers, healthcare facilities, higher education campuses, pharmaceutical facilities, and other environments where precise environmental control and dependable system performance are essential.

Find Your Local Partner

Proudly Representing Across the Region

Havtech partners with manufacturers to deliver innovative solutions across the Mid-Atlantic and beyond. With dedicated regional offices and expert teams, we bring industry-leading products and responsive support closer to you – wherever your projects take place.

Fast Answers. Full Support. Real Results.

Get expert guidance, responsive service, and the confidence that your HVAC system is built to perform.

Talk to an HVAC Specialist