How it all started
Air Dynamics' building in the 1930s, York, PA
How It Started
Daniel Lehman, President, Systems Planner, Owner
By Dan Lehman
I grew up on a small farm in a rural town, surrounded by machinery and physical processes—growing crops, raising animals, and maintaining equipment. We had everything from small cultivators and mid-sized tractors to lawn mowers, minibikes, go-carts, and off-road motorcycles.
Being around multiple mechanical systems, in various conditions, meant things were always breaking down. Fixing them required diagnosing problems, understanding how systems worked, and figuring out ways to improve them. That process became second nature and shaped the way I think today: to observe, adapt, problem-solve, and continually learn. Farming instilled a mindset of systems thinking, understanding how multiple processes work together, and applying that to any complex problem.
Early Work and Learning
At 14, I took my first job in downtown York, Pennsylvania, working for a local antiquities dealer. I polished suits of armor, medieval daggers, and artifacts for display. It was a small role, but it reinforced a love of learning and a hands-on approach to tasks. Practically, it also helped fund my next passion: cars.
By 16, I owned muscle cars and a barn to store them. I was heavily involved in my school’s industrial arts program from seventh through the 12th grade. I maintained the highest grades and received a senior-year award, though at the time it didn’t feel significant. Looking back, those years were formative, developing critical thinking, troubleshooting, and systems analysis skills that gave me an early advantage in life and work.
Military Experience and Systems Thinking
After high school, I joined the U.S. Air Force with an interest in computers. I was assigned to navigational systems for military aircraft, specializing in inertial radar navigation systems on the Lockheed C-5 Galaxy, the world’s largest cargo aircraft. I maintained computerized systems, including the malfunction analysis and recording system - still in use today.
That system functioned much like how we design air and particle control systems at Air Dynamics. Hundreds of sensors reported to a central computing platform, which processed the signals and presented real-time data to flight engineers. The same principle guides our approach today: we install sensors throughout our systems, report operating conditions to a central processor, and give operators real-time visibility locally or remotely. If an issue arises, we can log in anywhere to diagnose and resolve it.
The First Business and the Bridge to Industry
After retiring from the military, I started a part-time vacuum business, inspired by a segment on This Old House featuring a residential cyclonic central vacuum system. With a family, dogs, and kids, I immediately saw the value of a system that wouldn’t clog with debris. I ordered one, installed it within two hours, and was impressed by its efficiency—the dust collecting in a translucent container looked almost like sand art.
What began as a part-time venture installing vacuums for friends became a full-time business by the early 1990s. Around the same time, I worked for C3, a hybrid computing systems firm, installing hardware and software. My experience with complex computing systems would later influence how we design and integrate controls at Air Dynamics.
Pictured, flywheel construction inside the York Manufacturing Plant - what today is Air Dynamics.
The Turning Point: Industrial Systems
In 1990, Harley-Davidson called, requesting a vacuum system for a plant handling metal shavings and debris. All of my experience was residential, but I wanted the project. I dove into research, working through the Thomas Register of American Manufacturers, manually combing through volumes to locate an industrial vacuum manufacturer in Syracuse, New York.
I purchased the industrial system and, with friends and my father, installed it at Harley-Davidson’s York, Pennsylvania, facility over a weekend. The revenue from this single industrial installation was 15 times that of a residential system. That project marked a turning point—the residential business ended, and a focus on industrial air and particle control began.
Harley Davidson Factory
Building the Foundation
Air Dynamics grew organically, moving from startup spaces into our current 25,000-square-foot facility on Roosevelt Avenue, originally home to York Manufacturing Company, which built air conditioners. Today, the facility is equipped with three overhead cranes and 3-phase, 480-volt power—capable of supporting large-scale industrial system assembly and testing.
Air materials separation and safety are required across industries. The 2008 Imperial Sugar plant explosion in Georgia, which killed 16 people, prompted OSHA to reissue safety guidelines impacting 33,000 U.S. manufacturers handling combustible dust. At Air Dynamics, our systems are engineered with safety as a priority, addressing hazards ranging from grains and organic materials to plastics, metals, and chemical particulates.
Why Systems Fail — and How We Prevent It
A significant portion of our work involves replacing systems that are inefficient, underperforming, or never worked. In many large organizations, multiple vendors are involved: one supplies the dust collector, another the fan, another the controls. Fragmented responsibility increases risk, and when a system fails, accountability becomes unclear.
We’ve seen this firsthand. At an aerospace manufacturer, we removed multi-million-dollar systems that had not worked for 25 years. The challenge was clear: design and execute a system that works reliably from day one and continues performing for decades.
Our Value Proposition: One Company, One System
At Air Dynamics, responsibility remains under one roof. We handle design, engineering, manufacturing, motor selection, and controls integration in-house. With one company controlling the entire system, airflow calculations align with fan selection, mechanical design aligns with control logic, and motors are specified for actual operating conditions.
This integrated approach shortens problem resolution and ensures performance is engineered into every system. When the system is turned on, accountability is clear (eliminating finger-pointing), and reliability is built in.
Air Dynamics' building today, 180 Roosevelt Ave, York, PA
Our Approach: A Disciplined, Repeatable Process
Our process is methodical and repeatable, designed to eliminate assumptions and reduce risk. It begins with a detailed client meeting, followed by a site evaluation. Every input—known or unknown—is captured and verified.
System design follows a simple formula: A + B = C. Behind that simplicity are nearly 400 individual checks and calculations for each system. For example, determining vacuum airflow requires precise knowledge of pickup point size, hose diameter, and hose length. With validated inputs, the result is clear and defensible.
Because we control every step, from materials to production to delivery, we maintain quality, consistency, and performance across the project lifecycle.
Trend in Workplace Safety
I have observed a persistent trend with serious consequences: people adapt to hazardous conditions. My father was an asbestos applicator. By the age of 60, nearly all of his 300 union coworkers had died from asbestosis. I remember him cutting a two-inch asbestos board with a hard hat and safety glasses—but no respiratory protection. At the time, it seemed routine, but the consequences were deadly.
This adaptation occurs across industries. Recently, we assessed a corn processing plant with a combustible dust hazard. On paper, the process was routine—but the risk was real and not adequately addressed. Air Dynamics corrected this issue. Even when safety procedures exist, complacency in following protocols can be fatal.
Because of this, Air Dynamics takes a conservative approach to hazardous materials, ensuring air materials separators perform reliably. Systems are tested by industrial hygienists to verify effectiveness. For example, our installations in a concrete testing lab for the Port Authority of New York and New Jersey maintained safety and performance even during the tumultuous period of the World Trade Center attacks.
Integrating Safety into Design
Safety and reliability are not afterthoughts; they are embedded from day one. By handling design, engineering, manufacturing, motor procurement, and controls integration in-house, every calculation, component, and control parameter is verified.
Sensors report performance to a microprocessor-driven control panel, communicating via a human-machine interface. Operators monitor real-time data, and potential issues are flagged before failures occur. The system does more than operate; it monitors, verifies, and protects personnel and equipment.
Once installed, we deliver as-built documentation, manuals, and reordering guides. We also train operators to safely and efficiently maintain and control the equipment and we then perform commissioning. Structural elements are independently reviewed by third-party engineers for wind, seismic, and load conditions. Customers can choose stamped or non-stamped designs depending on regulatory requirements and budgets.
Why It Matters
The trend of adapting to hazardous conditions is not new—and it will continue. Air Dynamics’ integrated approach reduces risk and ensures systems perform as intended from day one.
Controls are intentionally “foolproof,” protecting equipment, mechanics, and operators from costly errors. Each project becomes part of a feedback loop, continuously improving safety, performance, and reliability across all systems we build. Customers return to Air Dynamics as their facilities expand.
Documentation, Integration, and Structural Review
We provide complete mechanical and electrical documentation and collaborate with customer stakeholders across engineering, quality, safety, and facilities to ensure seamless integration. Clear communication is possible because all components originate from a single facility.
Personnel access and structural integrity are critical. Independent third-party civil engineers review foundations, wind loads, seismic conditions, and supports, providing stamped drawings when required. This adds confidence and accountability while allowing cost flexibility for non-stamped designs.
Air Dynamics has the expertise and tools to address quality, safety, and operational challenges for any industrial facility. We are small but mighty.
