Consent of Independent Registered Public Accounting Firm

EX-23 2 dex23.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Consent of Independent Registered Public Accounting Firm

Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-125478 and 333-103307) of United Technologies Corporation of our report dated June 29, 2007 relating to the financial statements of the United Technologies Corporation Represented Employee Savings Plan, which appears in this Form 11-K.

/s/ PricewaterhouseCoopers LLP

Hartford, Connecticut

June 29, 2007