SMITH A O CORP — Director's Dealing 2005

Jan 5, 2005

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2005-01-01

Reporting Person: Petrarca Mark A (Vice President - H.R. & P.A.)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	502.57	Direct
Common Stock	4200	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Options (Right to Buy)	$24.64	2014-10-12	Common Stock (5500)		Direct

Footnotes

F1: Restricted Stock awarded on various dates between February 2000 and February 2004, with vesting in five years of the award date.

F2: Restricted Stock awarded on October 12, 2004.

F3: Granted on October 12, 2004, under the A. O. Smith Combined Executive Incentive Compensation Plan, a transaction exempt under Rule 16b-3.