The Bilco Company has served the building industry since 1926. During these years it has built a reputation among architects, engineers, and the construction trades for dependability and for products that are unequaled in design and workmanship. All Bilco products are designed to provide many years of trouble-free service. In addition, The Bilco Company has a highly skilled customer service department and an international network of factory trained representatives ready to provide whatever service or assistance you may require. Should a part fail to function in normal use within a period of five years - or longer, as indicated - from the date of purchase, a new part will be furnished at no charge. Electrical motors, smoke detectors and other special equipment carry warranties of the manufacturers of those products.