Precision Medical is known for having some of the best oxygen concentrators in the industry. At OxygenPlus Medical we provide a huge selection of home and portable oxygen concentrators from Precision Medical. These include new, used and refurbished models. Purchasing quality reconditioned oxygen concentrators from OxygenPlus can give you a substantial savings over a new unit. Our factory certified technicians have the experience and knowledge to make sure your reconditioned oxygen concentrators meet or exceed manufacturers performance standards