Supco

About Supco (Sealed Unit Parts Co., Inc.)

Supco — short for Sealed Unit Parts Co., Inc. — has been a cornerstone of the HVAC/R and appliance parts industry since its founding in 1945. Born from the hands of service contractors who needed better solutions in the field, Supco was built on a straightforward premise: give technicians reliable, well-engineered parts that make real-world service calls easier and more productive. More than 75 years later, that founding philosophy still drives everything the company does.

Headquartered in Allenwood, New Jersey, with additional manufacturing and distribution facilities in South Haven, Michigan and abroad, Supco maintains end-to-end control of its manufacturing process. Every part that comes off the line is quality-tested before it ships — a commitment that has earned the brand a permanent place on HVAC service trucks across the country.

Innovation Rooted in the Trade

Supco's engineering legacy is remarkable. The company's engineers invented the patented Bullet® Line Tap valve, pioneered the PTC technology behind modern two-wire AC and refrigeration hard start kits, and introduced the industry's first electronic vacuum gauge. Today, that same innovation continues through Supco's TradeFox™ product development program, which partners directly with working technicians to bring practical, field-proven tools to market — including the Attic Pro® Utility Lift, the Magnecover® Magnetic Umbrella, and the Jones® Valve Condensate Cleanout.

A Complete HVAC/R Product Lineup

Supco's catalog spans virtually every need a heating, cooling, refrigeration, or appliance service professional might encounter. On the cooling side, the brand's Linebacker® Motor Run Capacitors and Superboost® hard start kits are widely regarded as OEM-grade solutions at aftermarket value. For heating systems, Supco stocks a full range of furnace igniters, pressure switches, and combustion components.

Among the brand's most in-demand product families are its Drain Pans & Condensate Pumps, which keep HVAC systems free of damaging moisture buildup. Supco also offers essential Burners, Orifices & Combustion Parts for maintaining the heart of heating systems. Technicians rely on Supco's Electrical Multi-Testers for fast, accurate diagnostics in the field. The brand's broad line of Motor & Electrical Parts & Accessories — including capacitors, relays, and contactors — helps keep motors and electrical systems running efficiently. And for cooling system service work, Supco's A/C Repair Tools are purpose-built for the demands of professional technicians.

Trusted by Pros, Built for the Field

Supco products are stocked in HVAC supply houses across the United States, from independent one-branch operations to major national distributors. Whether you're a seasoned contractor or a dedicated DIYer tackling a residential HVAC repair, Supco's depth of product knowledge and field-tested designs make it one of the most dependable names in the business.