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WELCOME TO eFLOW USA

Largest Direct Supplier of Constant Airflow Regulators in the USA

eFlow USA, LLC is a premier supplier specializing in airflow balancing, indoor air quality, and energy savings products. eFlow is a recognized leader and the largest direct supplier of constant airflow regulators in the USA.

Experience Exceptional Support and Product Assurance with eFlow USA. Our Commitment to Your Satisfaction Means You Can Rely on Fast Order Processing, Expert Technical Support, and Product Warranty to Ensure Your Project's Success.

At eFlow, We Go Beyond Supplying Quality Products. Our Personalized Approach to Technical Support and Customer Service Ensures You Receive Expert Advice and Tailored Solutions for Your Unique Project Needs. Count on Us for Fast Response to Your Inquiries, Pricing, and Estimating to Keep Your Project Moving Forward.

Efficient Order Processing and Shipping - Get Your Products Faster with eFlow USA. We Understand the Importance of Timely Delivery, and We're Committed to Providing Fast and Reliable Service to Meet Your Needs.

Our Constant Airflow Regulator Products

Order Constant Airflow Regulator products directly from eFlow Shop. Our Constant Airflow Regulator products, also known as Automatic Balancing Dampers are UL 2043 Classified (R38307) devices that automatically adjust to environmental changes in stack pressure and accurately regulate airflow.

eFlow Constant Airflow Regulator is a low-cost solution for balancing ventilation systems, eliminating the need for on-site balancing and ongoing maintenance.

eFlow-MAX+ is the next-generation of the eFlow-MAX Constant Airflow Regulator. Durable, easy to adjust lock-in nub for CFM control, designed for optimal performance.

eFlow-CAR Dual Flow Dampers (e2Flow®) are self-regulating motorized dampers designed to introduce flexibility and dynamic control in central ventilation systems.

eFlow IRIS Balancing damper is a simple solution for the efficient and precise measurement, balance and control of airflow in ventilation systems.

A new generation of self adjusting CARs which provides the perfect match between high technical performance and aesthetic design.

Visit eFlow shop for a wide range of Constant Airflow Regulator accessories and products or get in touch to let us know how best we an assist you with your project.

Some of Our Featured Projects

Sendero Verde, New York, NY

Sendero Verde Sets New Standard in Sustainable Living with eFlow-Constant Airflow Regulators, Becomes World’s Largest Affordable Passive House Development In a groundbreaking achievement for sustainable urban living, Sendero Verde in East Harlem, New York City, has become the largest fully...

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200 East 83rd Street, New York, NY

We are proud to announce our latest project featuring e2Flow® PLUS system, the new ZRT alternative solution. This innovative solution is designed to provide a sustainable, cost-effective, flexiable  and efficient solution to controlled airflow balancing. With cutting-edge technology and a commitment to...

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Moxy Bedford Hotel, 353 Bedford, Brooklyn, NY

Moxy Brooklyn Williamsburg hotel located at 353 Bedford Avenue in Brooklyn, NY is yet another hotel to install eFlow-Constant Airflow Regulators (CARs) . This 11-story, 216-room Moxy Williamsburg hotel  is located just over the Williamsburg Bridge, in the heart of Brooklyn’s vibrant...

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Some of Our Featured Products

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Constant Airflow Regulator

Constant Airflow Regulator for Standard Pressure (0.2” w.c.-1.0” w.c.) applications.
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e2Flow®

e2Flow® | 0.2” w.c. to 1”w.c. Pressure $422.00 – $580.00
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eFlow-MAX+ High Capacity Constant Airflow Regulator

eFlow-MAX+ is the next-generation of the eFlow-MAX Constant Airflow Regulator. This enhanced version showcases an advanced, durable, easy to adjust lock-in nub for CFM control, meticulously designed for optimal performance and efficiency.
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eFlow-IRIS Damper
$32.00 – $539.00

eFlow IRIS Balancing damper is a simple solution for the efficient and precise measurement, balance and control of airflow in ventilation systems. This damper’s built-in static pressure measuring ports allow for airflow to be measured and controlled at a single station. Airflow is simply adjusted with a calibrated control lever.