RLS LLC designed, engineered, patented and developed the first press-to-connect fittings for the HVAC and refrigeration industries. RLS sells their patented fittings to the wholesale/distribution market.

With more than 15 million RLS fittings installed worldwide and more than 7 years of successful field use, RLS is the only line of press-to-connect fittings proven to stand the test of time in high-pressure HVAC/R applications.

RLS LLC is part of Marmon Holdings, Inc., a Berkshire Hathaway company.