Exhibit 15 October 26, 2000 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Ladies and Gentlemen: We are aware that our report dated October 18, 2000 on our review of interim financial information of United Technologies Corporation as of and for the period ended September 30, 2000 and included in the Company's quarterly report on Form 10-Q for the quarter then ended is incorporated by reference in the Prospectus constituting part of its Registration Statements on Form S-3 (Nos. 333-89041 and 333-91959), in the Registration Statement on Form S-4 (No. 333- 77991) as amended by Post-Effective Amendment No. 1 on Form S-8 (No. 333-77991- 01) and in the Registration Statements on Form S-8 (Nos. 333-21853, 333-18743, 333-21851, 33-57769, 33-45440, 33-11255, 33-26580, 33-26627, 33-28974, 33-51385, 33-58937, 2-87322, 333-77817, and 333-82911). Yours very truly, /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Hartford, Connecticut