Today, Sigma-Tremblay offers customers two enormous advantages: a combined tradition of more than four decades of quality experience, workmanship, and service as well as the finest heating and air conditioning equipment manufacturer in the world: Carrier.

sigma tremblay service truck

Sigma-Tremblay holds licenses in Dutchess, Putnam, and Westchester Counties, and is a BPI accredited home performance contractor. We are also EPA lead certified and hold several certifications in the HVAC field. All of Sigma-Tremblay’s employees are covered by Workmen’s Compensation Insurance and the company carries $1,000,000 of liability insurance.

Sigma-Tremblay is not only dedicated to being the finest air conditioning and heating company in the area, but also has developed a fireplace and stove division which features the most beautiful and energy efficient fireplaces, stoves, inserts, mantels, and fireplace accessories available today. Many of these products can be seen in our beautiful showroom in Wappingers Falls, New York.


  • Central Hudson’s #1 Trade Ally – 2010
    Out of all the heating and cooling companies in the area, only a few are selected as a trade alley. Out of that group, only one is selected as #1. Sigma Tremblay is proud to be selected as Central Hudson’s top provider.
  • Central Hudson #1 Most Completed Projects – 2010
  • Central Hudson Grand Improvement – 2010


Jack and Ann Armstrong established Sigma Environmental Systems in 1969 and through years of hard work and excellent customer service; Sigma became Dutchess County’s premier Carrier dealer. In 1986, John Tremblay founded Tremblay and Company, and following the same path, Tremblay and Co.

After thirty years of fine service to the community, Jack and Ann Armstrong began to plan for their retirement. After looking at several offers, John Tremblay was selected to be their successor because of his proven commitment to customer service. In 1999, the companies were merged internally but they continued to operate independently from one another for almost three years. After insuring a smooth transition for customers and staff of both companies, Jack and Ann retired in 2002 and Sigma-Tremblay was officially born.