A. O. SMITH CORP.
A.Y. MCDONALD MFG. CO.
ADVANCED POWER INC.
AMERICAN WATER HEATERS CO.
AQUATEC INTERNATIONAL
BRADFORD WHITE CORP.
CHOFU SEISAKUSHO
CRANE PUMPS and SYSTEMS
DANKOFF SOLAR PUMPS
EEMAX INC.
FLINT & WALLING
FRANKLIN ELECTRIC INC.
GRUNDFOS
HYDROMATIC PUMPS INC.
J-LINE PUMP CO.
LG ELECTRONICS
LIBERTY PUMPS Inc.
LITTLE GIANT PUMP CO.
LOCHINVAR LLC
MITSUBISHI ELECTRIC AUTOMATION INC.
NATURAL CURRENT LLC
PENTAIR Inc.
RHEEM
RINNAI CORP.
RURAL POWER SYSTEMS
SHANGHAI NO. 1 WATER PUMP FACTORY CO.
SHURFLO
SPECK PUMPS-POOL PRODUCTS INC,
STATE WATER HEATERS
Stiebel Eltron
SUNPUMPS
TAIWAN SAKURA CORP.
TUHORSE NORTH AMERICA
UNITED TECHNOLOGIES CORP.
WAYNE/SCOTT FETZER CO.
WEBER INDUSTRIES INC.
XYLEM INC.
ZOELLER CO.