Arrived quickly Arrived quickly, easy to set up.( had to look online for directions, as none were included with purchase) have used it both continuous plugged in, and pulse on the battery. Seems to work fine both ways. Need to look into an extra battery for backup. So far, I am very happy with the unit.

Communication could have been better Communication could have been better. Original item ordered was no longer in stock. Another model was supplied but had to call them to find out what was holding up shipment. Am pleased with item received.

Not great The machine will only go to 4.5ml. the alarm does not sound. It is making a funny noise after just a couple weeks. When I called customer service he said the alarm was not important and if it doesn't sound after a couple more uses call back.

Thank you Oxygen Medical Plus Thank you Oxygen Medical Plus. I ordered the wrong sieve beds for my 5LPM Invacare oxygen concentrator, my mistake. Oxygen Medical went way out of their way to correct the issue for me. My concentrator is repaired now and running like new. They were knowledgable, accomodating & professional. I will order again when the need arises. Thanks again :)

I FIRST BOUGHT A USED CONCENTRATOR FROM… I FIRST BOUGHT A USED CONCENTRATOR FROM THEM WORKED GREAT THEN I HAD A ISSUE THEY TRIED TO HELP OVER THE PHONE GOT IT WORKING THEN THEY SENT A REPLACEMENT AND A FREE PICK UP OF THE OLD ONE.JUST RECENTLY ORDERED FILTERS AND THEY ARRIVED IN A COUPLE DAYS.