NSC Applied Products Group is a division of NSC that was formed in 2013. We are built on NSC values and the importance of treating customers like friends (because they are).
In 1946, the Nabbefeld brothers began a new venture selling to contractors instead of doing contractor work. National Sales Company (NSC) was founded as a wholesale distributor primarily focused on heating products such as steam traps, radiators, fittings, and pipe. John Nabbefeld used his expertise as a pipefitter and relationships with fellow pipefitters and plumber friends to quickly establish a thriving business. Due to the fact that he was of German descent and the existing political climate post-WW2, John incorporated his U.S. patriotism into the naming the new company National Sales Company and choosing Red, White, & Blue as its company colors.
Serving you proudly for 75+ years
HIstory of NSC
NABBEFELD HEATING & COOLING
The Nabbefeld brothers founded Nabbefeld Heating and Cooling.
NSC is Founded
National Sales Company (NSC) is founded at its 1st location on West Pine
Move to Tower Grove
NSC headquarters is moved to Tower Grove location.
St. Charles Location
NSC establishes its St. Charles location.
Moving on up
NSC headquarters moves for the 2nd time to Duncan Avenue in St. Louis’ Central West area.
NSC acquires Independent Plumbing.
Goodbye St. Charles
The St. Charles location is moved to O’Fallon, Missouri.
Mike and Nancy Jersa purchase NSC from John and Joe Nabbefeld (Nancy’s father and Uncle)
The Family Business
Lenny and Susanne Knese take over leadership from Mike and Nancy Jersa (Susanne’s Father and Mother).
NSC’s Duncan Avenue headquarters and the O’Fallon location are consolidated into one main location on Delmar Boulevard in downtown St. Louis.
A New Focus
The Rise of APG
Bigger and Better Things
NSC begins construction of NSC APG’s expanded location in Lenexa, Kansas.
NSC Celebrates Landmark
Passion for Growth is a Core Value at NSC APG!
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