For those customers who have recently purchased a new AC unit, either with their new home or a replacement unit, you must register your new system ASAP with the manufacturer. With most manufacturers, and with most units, this registration will automatically extend your 5 Year Manufacturer Parts Warranty to 10 years. To register your product, please call (888) 831-2665 or fill out the form below, and a Del-Air Heating and Air Conditioning representative will call you to help register your product.