Our story
Four generations of mechanical know-how.
Companies don't reach 94 years by accident. They do it by showing up, doing the work right, and standing behind it.
1909
Maurice S. Johnston starts out on a horse-drawn milk wagon and teaches himself to repair the earliest refrigeration equipment.
1932
M.S. opens his own refrigeration business from his basement on Mulberry Avenue in Hagerstown.
1942
The company moves to its Pennsylvania Avenue campus, where both divisions still operate today.
Today
A full mechanical contractor: HVAC, refrigeration, food service equipment, and an in-house fabrication shop serving the Tri-State.
The longest-tenured York® dealer in the world.
In a trade where contractors come and go mid-warranty, tenure is the trust signal that can't be bought. Ours is measured in generations.
