James J.
I haven’t actually turned it on and…
I haven’t actually turned it on and used it yet, but I just turned it on and it is extremely quiet and it was packaged well and and quick delivery

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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267 approved reviews, newest moderated first
James J.
I haven’t actually turned it on and used it yet, but I just turned it on and it is extremely quiet and it was packaged well and and quick delivery
Douglas M.
I ordered the NT-03 portable oxygen concentrator and bought two NT-3 5000mah batteries to keep me running all day. The concentrator came with a 110v charger and a cigarette lighter plug in that worked inside the vehicle and plugged into the oxygen concentrator for continuos use. The concentrator and the two batteries give me 3L of oxygen as a max and it is more than enough for my needs. TTLife was very helpful and went out of their way to make sure I got what I needed. They are a good company and they stand behind and believe in what they sell. I will buy from them again. Thank you
Jesse S.
I really didn't expect this kind of quality for the cost. It is a well built machine and worth much more. I can't testify as to its durability as I have only used it for a week however due to its quality I expect many years of use.
Deborah B.
Shipping was very fast. The two concentrators I received were of excellent quality. The Instructions were good as well. I highly recommend this company and it's products.
Karin B.
I ordered the wrong machine for my needs. TTLIFE was so helpful in assisting me with the return process and helping me order the correct machine to meet my needs. Thanks so much for your amazing service !
Natalie
It’s a good product at a reasonable price, communication was good.
Paul
I have not yet rec iced my concentrator. When will it arrive. I've been waiting patiently. Thank God I didn't need it yet.
Response from TTLIFEJan 13, 2026
Thank you for your patience, and we're sorry to hear about the delay. Could you please provide your order number so we can check the status of your shipment and provide you with an update? We understand how important it is to receive your concentrator, and we'll do our best to resolve this as quickly as possible.
Nicholas F.
It was easy to complete my order including the checkout portion