We believe in the quality of our work and our products, and our warranty proves it. That’s why where most other companies only offer a one-year warranty on workmanship, Altera Design offers a full three-years – virtually unmatched in the industry. Furthermore, all the products that we sell are warranteed by the manufacturers' original warranties. For added protection, as a Diamond Certified company, Altera Design’s work is further backed by a money-back Performance Guarantee provided by the American Ratings Corporation. Between these three layers of protection, we challenge you to find a similar company that guarantees your satisfaction in writing as much as we do.