Designing, selling, and producing air handling units is a long process. I know, because I’ve been working on custom AHU projects for nearly 30 years now. If you’ve worked in custom AHU manufacturing, sales, or on construction projects that require custom AHUs, you know that it takes time to design and produce new units. But why does it take so long? Is there anything we can do to accelerate the process? And if it ain’t broke, why should we fix it?