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Exhibit 21

SUBSIDIARIES: The following lists all subsidiaries and affiliates of A. O. Smith Corporation.

 

Name of Subsidiary						Jurisdiction in Which Incorporated
A. O. Smith Water Treatment (North America), Inc.						Delaware
A. O. Smith Water Treatment (North America) Holdings, Inc.						Delaware
SICO Acquisition, LLC						Delaware
Takagi - A. O. Smith Tankless Water Heater Company LLC						Delaware
Mineral-Right, Inc.						Kansas
American Water Heater Company						Nevada
Hague Europe, LLC						Ohio
Lochinvar, LLC						Tennessee
State Industries, LLC.						Tennessee
A. O. Smith Holdings (Barbados) SRL						Barbados
A. O. Smith Bangladesh Private Limited						Bangladesh
A. O. Smith Enterprises Ltd.						Canada
A. O. Smith (China) Environmental Products Co., Ltd.						China
A. O. Smith (China) Investment Co., Ltd.						China
A. O. Smith (China) Water Heater Co., Ltd.						China
A. O. Smith (China) Water Products Co., Ltd.						China
A. O. Smith (Shanghai) HVAC Co., Ltd.						China
A. O. Smith (Wuhan) HVAC Co., Ltd.						China
A. O. Smith L’eau chaude S.a.r.l.						France
Waterboss Europe, SARL						France
A. O. Smith (Hong Kong) Limited						Hong Kong SAR
A. O. Smith India Water Products Private Limited						India
Products de Agua, S. de R.L. de C.V.						Mexico
A.O. Smith Water Products SL (Private) Limited						Sri Lanka
A.O. Smith Holdings I B.V.						The Netherlands
A.O. Smith Holdings II B.V.						The Netherlands
A.O. Smith Holdings III B.V.						The Netherlands
A.O. Smith International Holdings B.V.						The Netherlands
A.O. Smith Products v.o.f.						The Netherlands
A.O. Smith Water Products Company B.V.						The Netherlands
A. O. Smith Water FZE						United Arab Emirates
Lochinvar Limited						United Kingdom
A. O. Smith Vietnam Company Limited						Vietnam