A. Treffeisen and Sons, LLC
CELEBRATING 100 YEARS IN BUSINESS
Plumbing, HVAC and Electrical Contracting since 1923
We have design-build capability with negotiated contracts to competitive bid plan-spec work. Some of our clients include the Ioxus, Suny Oneonta, NYC DEP, NYS OGS, Hartwick College, Brooks BBQ, National Baseball Hall of Fame, Kraft Foods, DMV International, Covidien, Unison, Brewery Ommegang, Amphenol Aerospace, A.O. Fox Hospital, Oneonta CSD, Roxbury CSD, Stamford CSD, Charlotte Valley CSD, Unatego CSD, Franklin CSD, Milford CSD, Cooperstown CSD, DMCO BOCES, City of Oneonta and many more.
Manufacturing
Manufacturing & Industrial Plumbing, HVAC and Electrical Contracting
Retail
Retail & Services Plumbing, HVAC and Electrical Contracting
Hospitals
Hospital & Health Services Plumbing, HVAC and Electrical Contracting
Education
Educational & Institutional Plumbing, HVAC and Electrical Contracting
Hotels
Hotel & Housing Plumbing, HVAC and Electrical Contracting
Office / Financial
Offices & Financial Institutions Plumbing, HVAC and Electrical Contracting
Municipal
Municipal Plumbing, HVAC and Electrical Contracting
We’ve Been Building For Over 100 years
Albert Treffeisen, Sr. was a Forman building large steam boilers in New York during the late 1890’s. Albert Treffeisen Jr. , Albert Sr.’s son, started A. Treffeisen Plumbing and Heating in 1923 doing primarly boiler and plumbing work in New York.
Albert, Jr.’s son, Wayne Treffeisen, grew up working with his father installing plumbing and HVAC. In 1968 the business was passed to Wayne and continued to succeed by adding 2 employees. In 1975 Wayne moved the family and business to Mt. Upton, New York and in 1982 moved to Oneonta, New York.
Wayne’s sons, Kevin and Jamie Treffeisen also grew up working and learning the trade with their father and started fulltime in the early 1980’s. The company continued to grow, expanding to include the Electric trade and now has 20 employees on the team. Today Kevin runs the business and his 3 children, Alexa, Josh and Jacob are now active in the business working on the 4th generation!
Today with our team of 20 loyal, dedicated and professional employees, we perform primarily Commercial, Industrial, and Institutional work within 75 miles of our corporate offices located in Oneonta, New York. We perform almost all aspects of the Mechanical and Electric trades including fabrication of our own ductwork in our state of the art computerized facilities.