Moved called office no one would pick up. Moved out of state took equipment with us, called lincare in the new state. Told them in CT. Would not pick up equipment. They agreed to pick it up, even tho they did not use the tanks. Main office trying to charge me. Its BS since new state picked up the tanks with filling machine and concentrator,,, it should be in their records. Or do they not record items. Told them come by my house have no equipment of theres. My husband old boss gave my husband a new concentrator he had in storage. This ones light blue... lincares are grey. Worst company to work with,, total headache.