SMITH A O CORP — Director's Dealing 2004

Dec 8, 2004

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SMITH A O CORP (AOS)
CIK: 0000091142
Period of Report: 2004-12-07

Reporting Person: ROMOSER W DAVID (V.P., General Counsel & Sec.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2004-12-07	Common Stock	M	16350	$16.667	Acquired	66741	Direct
2004-12-07	Common Stock	M	17100	$16.333	Acquired	83841	Direct
2004-12-07	Common Stock	F	24282	$29.64	Disposed	59559	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2004-12-07	Employee Stock Options (Right to Buy)	$16.667	M	16350	Disposed	2005-10-10	Common Stock (16350)	Direct
2004-12-07	Employee Stock Options (Right to Buy)	$16.333	M	17100	Disposed	2006-10-08	Common Stock (17100)	Direct

Footnotes

F1: Granted on October 10, 1995 under the A. O. Smith Corporation 1990 Long-Term Executive Incentive Compensation Plan, a Rule 16b-3 Plan.

F2: Granted on October 8, 1996 under the A. O. Smith Corporation 1990 Long-Term Executive Incentive Compensation Plan, a Rule 16b-3 Plan.