Subject to the limitations in these Terms and Conditions, TCH warrants to Customer only, and not to any other third party, that the products will be free from significant operational defects in material and workmanship for a period of twelve (12) months beginning on the date of sale shown on the invoice. TCH’s liability is limited to replacing and repairing the products, at TCH’s discretion. A warranty replacement or repair of a claimed defective product shall not extend the warranty period. The warranty is valid only if Customer (a) notifies TCH in writing within thirty (30) days from discovery of any alleged nonconformity; (b) the products are returned to TCH for inspection; (c) TCH’s inspection discloses to its satisfaction that any alleged nonconformance is material and has not been caused by misuse, neglect, wear and tear, improper installation, unsuitable storage, repair, alteration, or accident; and (d) the products were installed, maintained and used in accordance with TCH’s instructions, if any. TCH shall have the right either to replace or repair any defective products (to the extent such defect is proximately caused by TCH), to refund the product price, replace (or pay for replacement of) damaged products or parts, or to grant a reasonable allowance on account of such defects, and TCH’s liability and customer’s exclusive remedy for defective products shall be limited solely to replacement, repair, refund or allowance as TCH may elect. TCH shall be given a reasonable opportunity to investigate all non-conformance claims.