Exhibit 99.1 AAVID THERMAL TECHNOLOGIES, INC. One Eagle Square, Concord, NH 03301 LETTER TO COMMISSION PURSUANT TO TEMPORARY NOTE 3T April 16, 2002 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549-0408 Ladies and Gentlemen: Pursuant to Temporary Note 3T to Article 3 of Regulation S-X, Aavid Thermal Technologies, Inc. has obtained a letter of representation from Arthur Andersen LLP ("Andersen") stating that the December 31, 2001 audit was subject to their quality control system for the U.S. accounting and auditing practice to provide reasonable assurance that the engagement was conducted in compliance with professional standards, that there was appropriate continuity of Andersen personnel working on the audit, availability of national office consultation and availability of personnel at foreign affiliates of Andersen to conduct relevant portions of the audit. Very truly yours, Aavid Thermal Technologies, Inc. /s/ Brian A. Byrne -------------------------------- Brian A. Byrne Chief Financial Officer