POWER OF ATTORNEY


	Know all by these presents, that the undersigned
hereby constitutes and appoints each of Mack V. Traynor, III and Doug
Nesbit, signing singly, the undersigned's true and lawful attorney-in-fact
to:

(1)	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or director of HEI, Inc. (the
"Company"), Forms 3, 4, and 5 in accordance with Section 16(a) of the
Securities Exchange Act of 1934, as amended, and the rules thereunder
("Section 16";

(2)	do and perform any and all acts for and on behalf
of the undersigned which may be necessary or desirable to complete and
execute any such Forms 3, 4, and 5 and timely file such form with the
United States Securities and Exchange Commission (the "SEC") and any stock
exchange or similar authority; and

(3)	take any other action of any
type whatsoever in connection with the foregoing which, in the opinion of
such attorney-in-fact, may be of benefit to, in the best interest of, or
legally required by, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall contain
such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

	The undersigned hereby grants to each
such attorney-in-fact full power and authority to do and perform any and
every act and thing whatsoever requisite, necessary or proper to be done in
the exercise of any of the rights and powers herein granted, as fully to
all intents and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact, or such attorney-in-fact's
substitute or substitutes, shall lawfully do or cause to be done by virtue
of this power of attorney and the rights and poers herein granted.  The
undersigned acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, are not assuming, nor
is the Company assuming, any of the undersigned's responsibilities to
comply with Section 16.

	This Power of Attorney shall remain in full
force and effect until the undersigned is no longer required to file Forms
3, 4 and 5 with respect to the undersigned's holdings of and transactions
in securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing
attorneys-in-fact.

	IN WITNESS WHEREOF, the undersigned has caused
this Power of Attorney to be executed as of this 23rd day of September,
2003.





									   /s/ Dennis J. Leisz

						Signature



									   Dennis J. Leisz

						Print Name