Sandy L M.
Ordered my oxygen concentrator on…
Ordered my oxygen concentrator on October 10. Still have not received it!!!

TTLIFE from American Medical Sales has over 15 years of oxygen therapy experience and we offer the highest quality brands of Portable Oxygen Concentrators, Home Oxygen Concentrators.
TTLIFE (oxygenconcentrator.shop) has 267 customer reviews on Five Star Index, with an average rating of 3.7 out of 5.
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Showing 71 reviews with 1 star · Clear filters
Sandy L M.
Ordered my oxygen concentrator on October 10. Still have not received it!!!
Dick M.
They have not been helpful as I have tried to return this item as I have found out that the specifications are not as advertised. I now have a useless brick that has cost me money that I cannot get back. I do NOT recommend purchasing from this company.
Unhappy C.
I am not happy with the customer service with this Company. I purchased the Varon BT-5 portable oxygen concentrator. The machine worked as described but was louder and heavier than expected. I wanted to return it unused. It took me almost 2 weeks with several emails, no phone number available, to finally get details to return. What upset me the most is you have to pay to ship the product back and they are taking $65.00 restocking fee. I do not recommend this Company.
Wendy S.
Company never responds. I tried calling,chat and email with no response. It’s been almost a week. They state shipping 3-5 days and still has not shipped. Very disappointing.
Carol A.
This company (based in Hongkong) is a total scam. I am basically out $300 for a non-medical grade oxygen concentrator that failed after only two months of normal usage. The company purports to offer a one-year warranty yet refuses to send a shipping label so I can return my defective unit for repair or replacement! Customer service cannot be reached during US business hours and has yet to provide a relevant response to my email queries. Buyer Beware! I will never do business with this OR ANY company in China again. They are neither reliable nor ethical!
Evie S.
Concentrator didn't meet my oxygen needs. TTLIfe advertises continuous flow at 93% +/_ oxygen cocentration. However, it does not make it clear that is ONLY at 1L setting and goes all of the way down to the 20-30% oxygen concentration range at any other setting. They advertise easy returns. NOT TRUE! Buyer beware as the only way to receive a refund is to return the product to China and buyer pays the shipping. I was quoted $598.00 to ship the product back. I paid $596.96 for the concentrator and extra battery package and did not use any of it. TTLife would not accept the battery package to be returned so the shipping was for the concentrator alone. Emails to customer support were not returned for days and were worded in a way that would require several more communications to get any kind of answer to my questions and the return policy. Pretty clever as they only offer a refund within 30 days and they use up several of those days for communication. Company offered me $70.00 to keep product and suggested I sell it instead of giving me 100% refund. Eventually, customer service offered me only $130.00 for a machine that is absolutely of no use to me and suggested I try to sell it to recoup the difference. The fact it only offers 1L for 93% oxygen concentration makes it a machine very few, if any, will buy for that price. Very deceptive advertising ! I am wondering where the good reviews come from. BE VERY CAREFUL ABOUT ORDERING FROM TTLife!! I'd look somewhere else and stay away from buying a concentrator from this company. They ship from warehouses in the United States but returns have to go all of the way to China!!
Response from TTLIFEJun 11, 2026
Hi, Thank you for your feedback. We’re sorry to hear that you weren't satisfied with your experience. We would like to look into this case carefully, but we are unable to verify the order details based on the information in this review alone. Please kindly share your order number or the email address used for the purchase so our team can locate your case. Your concern will be escalated to a dedicated support specialist, who will review the product information, return request, and previous communication history. We will follow up with you directly and work toward a reasonable solution. Thank you for your patience. We hope to have the opportunity to assist you further. TTLife Support Team
mike
Shipping is a problem. They say my item was shipped by UPS. UPS says no it wasn't. I am oxygen therapy dependent and I need the machine I ordered. Are they for real or are they fraudulent? Where is my order?
Response from TTLIFEJun 3, 2026
We sincerely apologize for the frustrating shipping confusion between our logistics and UPS that has delayed your unit. Kindly share your order number, and we will immediately look into your shipment status and resolve this issue promptly. Please rest assured we are a legitimate business and will get your oxygen machine sorted out as soon as possible.
Bruce L.
Worst company I've ever dealt with. This company cannot be trusted as they are scamming people. I ordered a machine on the 29th of April and they only sent me accessories and not the machine. I've sent dozens of emails and called asking to cancel my order and they keep running around in circles. I highly recommend you stay away from this company
Response from TTLIFEJun 11, 2026
Hi, We’re sorry to hear that your experience didn't meet your expectations. We take concerns about missing items, cancellation requests, and customer support very seriously. Since we are unable to verify the order details from this review alone, could you please provide your order number or the email address used for the purchase? Once we receive your information, we will escalate your case to a dedicated support specialist for review. They will check your shipment status, previous communications, and available resolution options, then follow up with you directly. Thank you for bringing this to our attention. We hope to have the opportunity to help resolve this properly. TTLife Support Team