Exhibit 99

NEWS RELEASE

1495 Steiger Lake Lane
Victoria, Minnesota 55386
952-443-2500

CONTACT:	For Immediate Release
Mack V. Traynor III, CEO

HEI, INC. ANNOUNCES CHIEF FINANCIAL OFFICER

     MINNEAPOLIS, June 30, 2006 — HEI, Inc. (NASDAQ: HEII, www.heii.com) announced today the appointment of Mark Thomas, as CFO, effective July 12, 2006.

     Mr. Thomas is the President of Mark Thomas Enterprises, LLC, a Minneapolis-based consulting firm founded in 2004 which focuses on financial management for both publicly-traded and private companies. From 1992 through 2004, Mr. Thomas was President, CEO, and CFO of Ballistic Recovery Systems, Inc., a provider of whole-aircraft emergency parachute systems to the general aviation and recreational aviation markets. Mr. Thomas is a certified public accountant and holds a bachelor’s degree in accounting from Moorhead State University.

HEI, Inc. designs, develops and manufactures microelectronics, subsystems, systems, connectivity and software solutions for OEMs engaged in the medical equipment and medical device, hearing, communications, and industrial markets. HEI provides its customers with a single point of contact that can take an idea from inception to a fully functional, cost effective and manufacturability product utilizing innovative design solutions and by the application of state-of-the-art materials, processes and manufacturing capabilities.

Headquarters & Microelectronics Division	PO Box 5000, 1495 Steiger Lake Lane, Victoria, MN 55386
-Advanced Medical Division	4801 North 63rd Street, Boulder CO 80301
-High Density Interconnect Division	610 South Rockford Drive, Tempe, AZ 85281
RF Identification and Smart Card Division	1546 Lake Drive West, Chanhassen, MN 55317

FORWARD LOOKING INFORMATION

Information in this news release, which is not historical, includes forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements in this press release include statements regarding the implementation of business strategies, growth of specific markets, potential sales and revenue figures and operational expectations. All of such forward-looking statements involve risks and uncertainties including, without limitation, continuing adverse business and market conditions, the ability of HEI to secure and satisfy customers, the availability and cost of materials from HEI’s suppliers, our ability to satisfy financial or other obligations or covenants set forth in our banking agreements, adverse competitive developments, change in or cancellation of customer requirements, collection of outstanding debt and receivables, and other risks detailed from time to time in HEI’s SEC filings. We undertake no obligation to update these statements to reflect ensuing events or circumstances, or subsequent actual results.