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.

Constant Airflow Regulators from eFlow USA

Some of Our Featured Projects

100 Flatbush Avenue, Brooklyn, NY

Revolutionizing Sustainable Living: 100 Flatbush Avenue is New York’s First All-Electric Residential Tower and it will Feature  eFlow-Constant Airflow Regulators! Amidst the bustling streets of New York City, a remarkable project is taking shape. 100 Flatbush Avenue is set to...

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17-21 Redfern Avenue, Far Rockaway, NY

eFlow-Constant Airflow Regulators are installed at 17-21 Redfern Avenue building part of the Rockaway Village Complex. We are delighted to announce an exciting development in Far Rockaway, Queens – the Rockaway Village complex. This transformative project, spearheaded by non-profit developer...

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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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8 Court Square, Long Island City, NY

8 Court Square building is nearly complete and features variety of eFlow-products for automatically balanced and controlled ventilation. 8 Court Square is a 20-story residential tower located at 27-10 44th Drive in Long Island City, NY. This 224-foot-tall structure will yield...

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Some of Our Featured Products


Constant Airflow Regulator

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


e2Flow® | 0.2” w.c. to 1”w.c. Pressure $422.00 – $580.00

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.

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.