Sales Engineer
***It is with profound sadness that we wish to inform you that Sean Macdonald passed away suddenly on Friday, September 29, 2023.

Sean was a valuable member of TWH Solutions and it was always fun to be around him. His positive attitude and smile made a lasting impression on all of us and those who knew him.

We appreciate the trust you placed in Sean to assist you on your projects.
- Tom Humen

(Please contact Lisa Heizmann at or myself at to provide any information required on your current projects)

"I’ve spent over twenty-two years as a mechanical designer and project manager with a local MEP/FP consultant. I am excited to bring my responsive reputation into a new sector of the HVAC industry. I enjoy collaborating with engineers, contractors, and owners to provide them with equipment solutions that meet the requirements of their projects. I play golf and spend time with my family and dogs when I am not working. I also served as a youth basketball coach for ten years."

Email: Complete Contact Form

Phone: 301-758-2118

TWH Solutions would like to welcome Sean Macdonald to our team as a Sales Enginee

Sean brings 22 years of experience as a mechanical designer and project manager with a local MEP/FP consultant. He is looking forward to working with our customers and utilizing his design experience and responsive reputation to help meet our customers needs.

Sean is married and has two adult daughters, two dogs and lives in Clarksburg, MD. Sean coached youth basketball for 10 years and currently enjoys playing golf in his spare time.

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