Parts, Repairs & Tech Support To obtain parts or service for products manufactured by Therma-Stor please call: TO ORDER PARTS Contact Us or call: 1-800-533-7533 (follow prompts)Mon–Fri, 8:00 am–5:00 pm CST FOR REPAIR & TECH SUPPORT Contact Us or call: 1-800-533-7533 (follow prompts)Mon–Fri, 8:00 am–5:00 pm CST Therma-Stor also provides repair services for atmospheric environment conditioning units manufactured by us and dehumidifiers such as, pool humidity control units, heat recovery water heaters, restoration equipment and others.