Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Post-Effective Amendment No. 1 to Registration Statement on Form S-3 (Registration No. 333-137998) of Southern Union Company and Panhandle Eastern Pipe Line Company, LP of our report dated February 26, 2007, relating to the consolidated financial statements of Citrus Corp., which appears in Southern Union Company’s Annual Report on Form 10-K for the year ended December 31, 2006.

/s/ PricewaterhouseCoopers LLP

Houston, Texas

October 19, 2007