Winter Warmth Assurance Program
Administered by Cornerstone United

Toll-Free:     (800) 824-5090
Local Telephone:     (828) 345-6019
Fax:     (828) 345-1918       (Claims and Dealer Agreements)


Hours of Operation:  Customer Service Representatives are available from 8:30am - 5:30pm Eastern.


Website Support:  Email support at support@cornerstoneunited.com


Mailing Address:
Cornerstone United
Eastway Plaza
1899 Tate Boulevard SE, Suite 2110
Hickory, NC  28602