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About us

For 75 years, Sealed Unit Parts Co., Inc., has been an innovative leader in the HVACR and Appliance parts industries designing, manufacturing and distributing high-performing parts, components, test instruments and tools.


Headquartered in Allenwood NJ, we operate proprietary manufacturing facilities in New Jersey, the Midwest and abroad. SUPCO maintains a worldwide network of sales representatives and distributors to serve both domestic and international industries.



Innovation is in our DNA.  In fact, it was SUPCO’s engineers who invented the patented Bullet® Line Tap valve in the 1960s, discovered the PTC technology behind our renowned two-wire air conditioning and refrigeration hard start kits, and manufactured the first ever electronic vacuum gauge in the 1990s. Today, we maintain an in-house engineering team in NJ to ensure that our products are produced to the highest standard by people who know our industry.  


SUPCO has always recognized that the most innovative product ideas come directly from those who understand the challenges of the job firsthand.  Our exclusive product line - SUPCO® TradeFox™ - are products that have been invented by real trade technicians.  Through the SUPCO® TradeFox™ brand, we help technicians bring their inventions to life and to the market through our years of experience in engineering, manufacturing and our expansive distribution reach.  

Within the last decade, SUPCO's strategic growth has included acquisitions of Climate Technology Corporation (CTC®), A-1® Components, Cam-Stat®, Jason Industrial® Aftermarket Appliance, NAPCO® and Aquasolve Chemical Company.

Our commitment to innovative manufacturing, affordability and support of the trade makes us "The Right Choice" in the HVACR, refrigeration and aftermarket Appliance parts industries.