SEC-REG, FSLRP. 71,071, Reg.ss.229.601 Exhibit 16: Letter re change in certifying accountant - -------------------------------------------------------------------------------- DiSanto Bertoline & Company, P.C. 628 Hebron Avenue, Building #3 Glastonbury, CT 06033-2496 (860) 659-1338 United States Securities & Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Ladies and gentlemen: We have read and agree with the comments in Item 4 of Form 8-K of Thermodynetics, Inc. dated November 30, 2000. Very truly yours, /s/ DiSanto Bertoline & Company, P.C. DiSanto Bertoline & Company, P.C. Glastonbury, Connecticut November 30, 2000