(845) 265-2828
2421 Route 52, Hopewell Junction, NY 12533

Certified & Independent

Air and Water Balancing Services

We Offer:

NEBB Certified Technicians and Managers 

Flexible Scheduling

Team Oriented Project Management  

Timely Reporting 


Knowledge and Experience

Needed to Support

Mission Critical Building Applications

Airflow Assessments

Enable school districts and building owners to make educated decisions on HVAC improvements



Keeping Occupants Safe

and Comfortable

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New Construction

Air and Hydronic TAB

Pre-Construction Surveys

Duct Leakage Testing

LEED Code Compliance

Blower Door Test

Sound Measurement

HVAC Mission Critical Support

Completion Reporting

Existing Buildings

Full System Surveys

Air and Water Flow Troubleshooting 

Full System Balance

Ultra-Sonic Flow Testing

Fire Damper Testing

Fume Hood Testing

Completion Reporting

Residential Buildings

Duct Leakage (Blaster) Test 

Blower Door Test 

Air and Water Balance

Sound Measurement

Energy Code Compliance

Completion Reporting 

Who We are:

dL Flow Tech is an independent certified heating and air conditioning firm specializing in air and hydronic testing and balancing. We’re strategically located in the New York Hudson Valley. Our service region includes the Tri-State region and greater Hudson Valley from NYC to Albany. Over three decades in business, we’ve consistently delivered outstanding technical expertise, integrity in building certification support, and an unfailing commitment to customer service.

Professional Services Since 1982

We work with building owners, architects, engineers, and trade contractors to test, adjust and balance HVAC systems installed in existing, new and remodeled buildings, ensuring the systems meet standards for building codes, certification for mission critical applications such as health care and laboratory facilities, and satisfy prevailing energy codes.

Ventilation Verification

Recent events have put a spotlight on the importance of a proper ventilated indoor environment. dL Flow Tech thru the years has had the experience of working in critical environments such as labs, clean rooms, outpatient medical facilities, hospitals and commercial kitchens. Yearly testing and verification has always been a vital task in ensuring the users safety. Now with the spreading of highly contagious viruses all indoor environments are critical settings.

Schools, restaurants, retail stores and any other spaces where large groups congregate have been an area of alarm. Our testing services include survey of flows and system performance, rebalancing systems to their initial design, and providing certified reports on HVAC operating conditions. In addition yearly services of testing room pressurization, air change rates and fresh air flow are now vital in maintaining a safe environment for occupants.

So regardless of your buildings use, the safety of its occupants is the primary concern. Verifying the buildings air flow and maintaining periotic testing gives piece of mind that even airflow, which can’t be seen, is being monitored and adjusted to the building’s needs.

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