dL Flow Tech Inc. is an independent agency, specializing in heating and air conditioning systems. Established in 1982, the firm is certified by the National Environmental Balancing Bureau (NEBB), the Testing Adjusting and Balancing Bureau (TABB), and the American Council for Accredited Certification (ACAC).



In 1982 dL Flow Tech Inc. began with one person; Dennis LaVopa founder and president. As time passed, dL Flow Tech grew not only in size but in experience, credibility, and honesty in a competitive HVAC industry. Expanding the services offered from air and hydronic TAB to sound measurement, retro commissioning, fire damper testing, duct leakage testing, pipe thickness testing and blower door testing. It has always been the focus of Dennis to not only maintain technical certifications but always maintain relationships with clients who appreciate honest work. Always stressing the importance of quality to his employees, Dennis has earned a reputation for trustworthy service for over 30 years. Dennis is also active in professional organizations such as ASHRAE Bi-state Chapter SMACNA Southeastern New York, and NEBB Northeast chapter.




While celebrating the past 35 years of service we look forward to the changes ahead. As the industry changes and a second generation begins to move forward we have not forgotten our basic business principles. dL Flow Tech Co. continues to strive for excellence by satisfying customer needs and creating a reputation for hard work and dependability.


Contact Us

dL Flow Tech


2421 Route 52

Hopewell Junction, New York 12533


Phone: 845-265-2828

Fax: 845-265-2745

E-mail: info@dlflowtech.com

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