May 3, 2005 INVESTOR CONTACT: A. Ernest WhitonChief Financial OfficerZOLL Medical Corporation+1 (978) 421-9655 MEDIA CONTACT: Diane EganZOLL Medical Corporation+1 (978) firstname.lastname@example.org FOR IMMEDIATE RELEASE ZOLL Medical Wins Fourth Straight Omega Northface Scoreboard Award for Technical and Customer Service Excellence Tuesday, May 03, 2005 – CHELMSFORD, MASS.—ZOLL Medical Corporation (NASDAQ: ZOLL), a manufacturer of resuscitation devices and software solutions, announced today that it has won the Omega NorthFace ScoreBoard Award for a fourth consecutive year. The award is presented annually by the Omega Management Group, a leader in implementing customer satisfaction and retention programs.“Since 2000, ZOLL’s customer satisfaction levels for technical support and customer service/delivery process have consistently remained high,” said Richard A. Packer, President and Chief Executive Officer of ZOLL. “This type of consistency year after year clearly demonstrates the importance we place on customer service as we develop products that help advance the practice of resuscitation.”The Omega NorthFace ScoreBoard Award is presented annually by Omega Management Corporation to organizations that not only offer exemplary service to their customers, but also center their existence on a deep commitment to exceed all customer expectations.To qualify for the NorthFace ScoreBoard Award, a company must meet four criteria: 1) senior management commitment to exceeding customer expectations; 2) customer satisfaction program that identifies and corrects customer problems; 3) measuring the level of customer satisfaction with product/service; and 4) achieving an overall score of 4.0 out of 5.0 for a year. In ZOLL’s case, Omega conducted quarterly telephone surveys with 100 customers to determine level of achievement and quantify results. About Omega Management Group Corporation Since 1984, Omega has been a leader in providing customer satisfaction and retention programs by successfully partnering with their clients to achieve the goal of World Class Customer Organization. The Chelmsford, Mass.-based company is grounded in the service side of a wide cross section of industries. Omega’s mission is to provide organizations with a competitive advantage by delivering customer intelligence data that increases customer satisfaction and loyalty. About ZOLL Medical Corporation ZOLL Medical Corporation (NASDAQ: ZOLL) is committed to developing technologies that help advance the practice of resuscitation. With products for pacing, defibrillation, circulation, ventilation, and fluid resuscitation, ZOLL provides a comprehensive set of technologies that can help clinicians, EMS professionals, and lay rescuers resuscitate sudden cardiac arrest or trauma victims. ZOLL also designs and markets software that automates the documentation and management of both clinical and non-clinical data.ZOLL has operations in the United States, Canada, the United Kingdom, Germany, France, The Netherlands, Australia, and Austria. With direct operations, international offices, and business partners in all of the world’s major markets, ZOLL markets and sells its products in more than 140 countries.Certain statements contained in this press release, including statements regarding the anticipated development of ZOLL’s business, potential sales levels, its ability to differentiate its products from others on the market, and other statements contained herein regarding matters that are not historical facts, are “forward-looking” statements (as defined in the Private Securities Litigation Reform Act of 1995). Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Factors that could cause actual results to differ materially from those expressed or implied by such forward-looking statements include, but are not limited to the ability of the ZOLL sales force to market successfully multiple resuscitation products, and those factors discussed in the section entitled “Risk Factors” in ZOLL’s Quarterly Report on Form 10-Q, which was filed with the SEC on February 11, 2005.Copyright © 2005 ZOLL Medical Corporation. All rights reserved. 269 Mill Road, Chelmsford, MA 01824-4105. ZOLL is a registered trademark of ZOLL Medical Corporation. All trademarks are property of their respective owners.