Residential Services

Featured Project: Fort Hill Peekskill NY

dL Flow Tech is happy  to be part of he Construction team for Ginsburg Development, performing Duct Leakage Testing and Blower Door Testing for 178 units. 1,2,3 bedroom units. 

The 2010 Energy Conservation Construction Code of New York State (ECCCNYS-2010) (effective December 28, 2010) is now mandatory throughout New York State. The code regulates the design and construction of buildings for the effective use of energy while providing flexibility to allow the use of innovative approaches and techniques. It includes additional mandatory provisions and requires buildings to be substantially more energy efficient than the 2007 edition. We offer two services to meet these requirements: 

Duct Leakage Testing

A duct leakage tester is a diagnostic tool designed to measure the airtightness HVAC ductwork. A duct leakage tester consists of a fan and a pressure sensing device to measure the pressure. The combination of pressure and fan flow measurements are used to determine the ductwork airtightness. The airtightness of ductwork is useful knowledge when trying to increase energy conservation and maintain code requirements.

Blower Door Testing

Blower Door Test: A blower door is a fan set up that mounts into the frame of an exterior door. The fan pulls air out of the house, loweringthe  air pressure inside. The higher outside air pressure then flows in through all unsealed cracks and openings. These tests determine the air infiltration rate of a home/building.


  • Reducing energy consumption due to air leakage
  • Avoiding moisture condensation problems
  • Comply with local building codes
  • Avoiding uncomfortable drafts caused by cold air leaking in from the outdoors

Contact Us

dL Flow Tech


2421 Route 52

Hopewell Junction, New York 12533


Phone: 845-265-2828

Fax: 845-265-2745


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