Every item is guaranteed to be free of defects in workmanship or materials for one year from the original date of delivery when installed and maintained properly. We agree to repair or replace without charge, at our choice, any product judged defective for either of these reasons and to return the item (or its replacement) freight prepaid. Products that do not have a special guarantee carry up to a one-year guarantee which is honored only when the product is inspected and found to have experienced normal use.