eFlow USA supplied 4” Constant Airflow Regulators (CARs) (10-30 CFM & 30-60 CFM) and 5” Constant Airflow Regulators (CARs) (60-105 CFM) to enhance airflow efficiency, optimize HVAC performance, and improve indoor air quality at The Duchess, 300 East 83rd Street, NYC—a 22-story luxury residential development in Manhattan’s Upper East Side. With expert installation by KSW Mechanical LLC and product supply through SRS Enterprises Inc., this high-rise project seamlessly blends upscale living with sustainable design.

The Duchess, 300 East 83rd Street, NYC
Key Industry Leaders Behind the Project:
- Architect: SLCE Architects
- Developer: Lalezarian Properties
- General Contractor: Hudson 37 LLC
- Installer: KSW Mechanical LLC
- Product Representative: SRS Enterprises Inc.
Elevating Luxury Living with High-Performance Ventilation
The Duchess redefines luxury residential living with a focus on premium comfort, energy efficiency, and air quality. Featuring 42 exclusive two- to four-bedroom residences, the development offers sophisticated urban living while integrating cutting-edge ventilation solutions.
To support seamless air circulation and long-term HVAC efficiency, KSW Mechanical LLC installed eFlow-CARs throughout kitchen and bathroom exhaust systems, ensuring:
- Energy Efficiency – Optimized airflow reduces HVAC strain and operating costs.
- Superior Indoor Air Quality – Balanced ventilation enhances resident health and comfort.
- Seamless High-Rise Integration – Designed for large-scale luxury developments.
Enhance Your Next High-Rise with eFlow USA
From luxury residential towers to affordable housing, eFlow USA provides advanced ventilation solutions tailored for energy efficiency, superior air quality, and seamless integration.
📩 Contact Us Today:
🌐 Website: eflowusa.net
🛒 Order Online: eflowshop.net
📧 Email: [email protected]
📞 Call: 1-833-356-9872
eFlow Product sold through Product Representative : SRS Enterprises Inc. https://www.srs-enterprises.com
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.