ECO-Link is a partnership between the State Treasurer of Ohio and participating state banks that provides a 3% interest rate reduction for five or seven years on bank loans when completing energy-efficient upgrades in your home. The Treasury purchases an investment with a participating bank at a discounted rate on behalf of the homeowner participating in ECO-Link. The lender then passes along the discounted savings to the homeowner as a 3% interest rate reduction of for five or seven years on an eligible bank loan. Through the life of the loan, the customer pays the bank and the bank then returns the investment to the Treasury at maturity.