Schedule a meeting.
Talk to an engineer.
Pick who you want to meet with, the right length, and a time that works.
Meet the people on the call.
Three people cover Northern California. Whoever you book, you are talking to the person who sizes the system, writes the spec and shows up on site.
Chris Cassidy
Owner & Vice President
Runs the specification side of the business. Code references, listed-equipment strategy, and the AHJ conversations that decide whether a layout passes.
John Adachi
Owner & President / Mechanical Sales Engineer
Expert in fan selection, flue gas dynamics, and backpressure analysis. Works closely with design teams from schematic phase through submittals to deliver reliable, code-compliant systems built for real-world field conditions.
Frank Shanahan
Outside Sales Engineer
Bid-day take-offs, factory release schedules and pre-install walk-throughs. The person contractors call when the load has to land on a date.
Sean Wilson
Inside Sales Estimator & Application Engineer
Manages proposal development, project estimation, and initial system design. Combines precise fan selection and pressure loss calculations with detailed bid coordination to deliver competitive, field-ready proposals.
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Step 01
Who do you want to meet with?
Both engineers cover the full EXD line. Pick whoever you've talked to before, or either one.