Please note some items require professional knowledge/skill to handle or install. GSIstore is not responsible for any damage or injury resulted from mishandling of professional products. All HVACR equipment should be serviced/installed by certified professionals only. Please let us know if you have any concerns or questions. Liability in all events is limited to purchase price paid. Price and availability subject to change without notice, GSIstore will notify buyer with such order within one business day. We reserve the right to cancel any order and refund for any reason. Please order based on manufacturer part numbers, pictures are for general reference only and actual item may look different.