Works great very happy with it
Works great very happy with it
By Jt
Tuesday, November 10, 2026 · Customer reviews of US businesses
The Fair Hearing score
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267 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
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 The Fair Hearing, with an average rating of 3.7 out of 5.
Showing 147 reviews with 5 stars · Clear filters
Works great very happy with it
By Jt
Tried unit for two nights and it ran as expected.
By Jon W.
I was impressed with the customer service. I messed up my address, but they fixed it immediately before it shipped. My seren5 package still arrived in five days. Everything went perfectly smoothly.
By Lorraine J.
Got my NT-4 in only three days, and it works great. I'm happy with the purchase.
By Cornelia D.
The oxygen concentrator is a great machine. Works quietly, great price and great customer service
By Ernest C.
Excellent service and delivery of a very good product.
By George
My concentrator has been working very well so far. I’ve had about a month now and have had no issues or problems with it whatsoever. This machine was a great value for the price. Thank you, Roy E White Sr
By Mr Roy E White S.
Just all around goodcompany and products.
By Mark E.