SAS – Supply Air System

The Supply Air System (SAS) maintains a constant pressure in the mechanical room or ducted supply. Designed with EC-Flow Technology™ the SAS takes advantage of US Draft Co. proprietary bi-directional pressure transducer and PID technology to rapidly respond to varying outdoor pressures to maintain a neutral pressure in the mechanical room or appliance inlet duct when compared to atmosphere. Utilizing an inline or wall mounted supply fan, an L-series controller, pressure transducer and outdoor sensor, the system maintains the required combustion air of the manufacturer. The SAS meets all requirements for the National & International Fuel Gas Codes and the Uniform & International Mechanical Codes.


Corp. Number:
(800) 881-0052

Email Address:

Corporate Address:
120 Sylvania Ave, Suite A
Fort Worth, TX 76111
Get Directions


Sales Contact:
Travis Clayton
Cell: (817) 733-1127

Zack Johnson ‐ ext 104

Customer Service Contact:
Katy Armendariz – ext 102

System Brochures & Data Sheets