​​​​Below are the PECO offices for contact regarding your residential or business electric and natural gas projects. Bucks or Montgomery CountyPlease note: Lower Merion is served by the Delchester OfficeWarminster Service Building400 Park Ave., Warminster, PA 18974 Central Phone number: 800-454-4100Central Fax number: 215-956-3240​BucksMont Electric Contact Numbers (pdf) BucksMont Gas Contact Numbers (pdf) ​Delaware, Chester or York CountyBerwyn Service Building 1050 W. Swedesford Rd, Berwyn, PA 19312 Central Phone number: 1-800-454-4100Central Fax number: 610-725-1416​ DelChester Electric Contact Numbers (pdf) DelChester Gas Contact Numbers (pdf)Philadelphia CountyPlease note: PECO does not provide gas service in Philadelphia County.Christian Street Service Building 830 S. Schuylkill Avenue, Philadelphia, PA 19146-2395 Central Phone number: 800-454-4100Central Fax number: 215-731-2327​ Philadelphia Contact Numbers (pdf)New Residential Construction For new residential construction requests serving all counties in PECO's service territoryMain Phone number: 215-956-3010Fax number: 215-956-3380Toll Free: 1-800-454-4100,Option 2.Please reference our Builder's Handbook​ in the Guidelines Section for direct contacts.Before You Start Your WorkBefore you dig, be safe and call Pennsylvania One-Call at 811.Request to work near energized facilities – Click here. ​