eFlow USA supplied nearly 200 Constant Airflow Regulators – eFlow-CARs for 499 President Street—a 10-story, 350-unit mixed-use residential development in Brooklyn’s Gowanus neighborhood. The project team includes SLCE Architects (Project Architect), Urban Atelier Group (General Contractor), and Epic Mechanical (Installer of eFlow products). Of the 350 apartments, 88 units are designated as affordable housing, all rent stabilized and income restricted.

Advancing Affordable Housing with Reliable Ventilation
As a completed mixed-use development in Brooklyn, 499 President Street demonstrates how thoughtful design and quality building systems can support both market-rate and affordable housing within a single development. With eFlow-CARs installed throughout all 350 units, the building benefits from consistent, pressure-independent exhaust ventilation that maintains indoor air quality while optimizing HVAC efficiency—critical factors for both resident comfort and long-term operational costs in affordable housing.
eFlow-CAR at a Glance
- Product Models: Mix of 4″ Constant Airflow Regulators (CARs), 5″ Constant Airflow Regulators (CARs), 6″ Constant Airflow Regulators (CARs), and 8″ Constant Airflow Regulators (CARs) with various CFM settings
- Applications: Kitchen and bathroom exhaust systems (new construction)
- Performance: Passive regulation, no sensors or power required, ±5% tolerance
- Custom Solutions: Nearly 200 units tailored to specific CFM requirements throughout the building
- Learn More: eFlow-CAR Overview | Download eFlowUSA Product Catalog & Price List (PDF)
Project Stakeholders
- Project Architect: SLCE Architects
- General Contractor: Urban Atelier Group
- Installer of eFlow products: Epic Mechanical
- Product sold: Nearly 200 eFlow-CARs ranging from 4″ to 8″
- diameters with various CFM settings
Why eFlow-CARs Matter
- Affordable Housing Solution – Reduces long-term operational costs while maintaining resident comfort
- Custom CFM Flexibility – Mix of 4″ to 8″ diameters ensures optimal airflow for every unit size
- Balanced Airflow – Maintains constant exhaust performance across all 10 floors
- Energy Efficiency – Prevents wasted HVAC effort in mixed-income residential settings
- No Power Needed – Mechanical airflow regulation, maintenance-free
- Supports Sustainability – Operational cost savings benefit both affordable and market-rate residents
Project Overview
- Address: 499 President Street, Brooklyn, NY
- Building Type: Mixed-Use Residential (New Construction)
- Number of Floors: 10
- Number of Units: 350 apartments (88 affordable housing units, rent stabilized and income restricted)
- Project Status: Completed
- Scope: Supply of nearly 200 Constant Airflow Regulators (4″ to 8″ diameters with various CFM settings)
Supporting Brooklyn’s Affordable Housing with Smart Ventilation
From affordable housing developments to luxury residential towers, eFlow-CARs deliver reliable, code-compliant ventilation solutions that enhance building performance while reducing long-term operational costs—benefiting both building management and residents.
🌐 Website: eflowusa.net
🛒 Order Online: eflowshop.net
📧 Email: sales@eflowusa.net
📞 Call: 1-833-356-9872
📄 Download eFlowUSA Product Catalog & Price List (PDF)
eFlow-CAR FACTS
eFlow-CAR is a simple solution to balancing ventilation systems. Constant Airflow Regulator is a device that automatically regulates airflows in ventilation systems to constant levels. The passive control element responds to duct pressure, and requires no electric sensors, pneumatic sensors or controls. eFlow-CARs promote high indoor air quality and energy savings.
- UL 2043 Classified
- Composed of fire resistant UL 94 ABS plastic
- Diameters offered: 3”, 4″, 5”, 6”, 8″, 10″
- Operating Pressure Range: 0.08 to 2.4 in w.g. (20-600Pa)
- Airflow settings: 15-765 CFM
- Temperature Limits: -22° to 140°F (-30° to 60°C)
- Suitable for both supply and exhaust applications
- No external power supply needed
- Field Adjustable CFM set point
- Capable of maintaining constant airflow within +- 5% for nominal airflow throughout the target operating pressure range of 0.08 to 2.4 in.
- Standard for Energy Efficient Compliance
American Aldes Alternative to Aldes CAR3, Aldes CAR3-S, Aldes CER3-R, Aldes CER3-S, Aldes CER3-S-F, Aldes CSR3-R, Aldes CSR3-S, Aldes CSR3-S-F, Aldes CEB3-WS, CEB3-WB, Aldes CEB3-CS, CEB3-CS-F, Aldes CSB3-WS, Aldes CSB3-WB, Aldes CSB3-CS, Aldes CSB3-CS-F, Aldes ZRT, equal to Aldes MR MAX Alternative to American Aldes: car ii, Equal to Nailer Constant Volume Regulator Nailer CVR CVR-SP – Constant Volume Regulator – Standard Pressure CVR-HP – Constant Volume Regulator – High Pressure CVR-LP – Constant Volume Regulator – Low Pressure CVR-GM – Constant Volume Regulator – Grille Mount CVR-FD – Constant Volume Regulator – w/ Fire Damper CVR-T – Constant Volume Regulator – Transition Collar Equal to young regulator Constant Volume Regulator CVR, young regulator CVD, CVD-S constant volume damper, CVDR: Rectangular Constant Volume Damper, 4011-CVR: Fresh Air Damper w/ a CVR, CVEF8, CVEF5, CVRF2, CVR-LP Constant Volume Regulator Low Pressure, CVR-HP Constant Volume Regulator High Pressure model cvrf5, model cvr8, cvp plus enhanced constant volume regulator, cvpfd constant volume regulator in a UL-rated assembly, cvpf5 enhanced constant volume regulator wall mount box, cvpf2 register box, cvd constant volume damper, cvdr rectangular constant volume damper, cvrf8, cvrf5, cvrf2, CVR, CVRF1, CVRF2, CVRF5, CVRF8 Alternative to greenheck ABD, ABD-FD, ABD-RB, ABD-T, ABD-Z1, ABD-Z2.
Automatic balancing damper, automatic airflow balancing, automatic balancing valve Equal to United Enertech constant volume regulator model, precision flow model, CR, CR-LP, CR-HP, CRB-10-S, CRB-10-S-CD, CRB-10-E, CRB-10-E-CB, CRB-10-E.





