Extended Warranty Options in Canada

ACV Triangle Tube is pleased to offer extended 5 and 10 year labor and parts protection plans for the Prestige, Challenger, and Keystone Boilers. *For residential applications only. All program correspondence will be handled directly with CornerStone, the Plan Administrator.

CornerStone United
931 Commissioners Road East - Suite 201
London, Ontario N5Z 3H9

Phone: 800-774-9992
Fax: 519-679-1327

  • All necessary forms are available for download below or from CornerStone.
  • Contractors will send the registration form and their remittance directly to CornerStone.
  • Homeowners will receive a congratulations letter welcoming them to the program containing the contract information directly from CornerStone.

If you have any questions regarding the ACV Triangle Tube Extended Homeowner Protection Plan, contact your Triangle Tube Sales Representative or CornerStone directly.

    • Contractor Registration Form

    • 331 KB

    • How to Submit a Claim Instructions

    • 189 KB

    • Extended Warranty Application Form

    • 506 KB