Monday, November 9, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
10,527 reviews
Oxygen Concentrator StoreSelect a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Oxygen Concentrator Store from American Medical Sales and Rentals has been providing oxygen therapy experience since 2001 and we offer the highest quality brands of portable oxygen concentrators, home oxygen concentrators and solutions for sleep therapy. Our Respiratory Specialists are fully trained on every product we carry and are here to answer any questions you have.View Top Categories:Portable Oxygen ConcentratorsHome Oxygen ConcentratorsUsed Oxygen Concentrators
Oxygen Concentrator Store (oxygenconcentratorstore.com) has 10,527 customer reviews on The Fair Hearing, with an average rating of 4.8 out of 5.
10,527 approved reviews, newest moderated first
Very responsive and sensitive to customer needs.
By David B.
Response from Oxygen Concentrator Store· Mar 17, 2025
Hi David, thank you for your feedback! We're glad to hear that our team was responsive and attentive to your needs. If you ever need anything else, feel free to reach out—we’re here to help!
Everything was great from the phone call asking for information to the purchase of the portable concentrator. I am very happy with my purchase.
By PA
Response from Oxygen Concentrator Store· Mar 17, 2025
Hi PA, thank you for your feedback! We're thrilled to hear that your experience—from inquiry to purchase—was smooth and satisfying. If you ever need anything else, feel free to reach out—we’re here to help!
It was a pleasure to connect with Luke. He answered all questions and returned my calls in a timely manner. Luke also made sure that I got connected with the right concentrator and kept me advised through the process of purchasing a portable concentrator. Thanks
By Kelley, H.
Response from Oxygen Concentrator Store· Mar 17, 2025
Hi Harry, thank you for your feedback! We're glad to hear that Luke provided excellent service and helped you find the right concentrator. If you ever need anything else, feel free to reach out—we’re here to help!
All went well, order, delivery, however there was no manual or instructions with the charger. Question - does it matter if the battery is fully charged and it is left on the charger?? Or should the battery be removed from charger when fully charged?? Can the charger remain plugged in even when not charging a battery??
By Lou F.
Response from Oxygen Concentrator Store· Mar 11, 2025
Hi Lou, thank you for your feedback! We're glad to hear that your order and delivery went smoothly. We apologize that the manual or instructions were not included. To answer your questions based on the FreeStyle Comfort User Manual: -Leaving a fully charged battery on the charger – The manual does not state that it must be removed immediately, but it does mention that storing batteries at full charge for extended periods may degrade battery life. To extend battery longevity, it's best to remove it once fully charged. -Keeping the charger plugged in when not charging a battery – The manual does not indicate that this will cause damage, but unplugging it when not in use is recommended to avoid unnecessary power consumption. -Battery storage – If the battery won’t be used for an extended period (a month or more), it should be stored at 50%-75% charge rather than fully charged or depleted. If you need a digital copy of the manual or any further assistance, please reach out to us at 877-303-9289 between 8:00 AM - 5:00 PM MT, Monday - Saturday. We’re here to help!
Fast service. Helpful, knowledgeable representatives.
By Irv
Response from Oxygen Concentrator Store· Mar 17, 2025
Hi Irv, thank you for your feedback! We're glad to hear you had a great experience with our fast service and knowledgeable team. If you ever need anything else, feel free to reach out—we’re here to help!
I liked the speedy delivery. But my unit weighs more than I was told it would. The bag is too small, and the cheap plastic hooks on strap broke. I wish I could get ahold of somebody to correct this.
By ., Wendy S.
Response from Oxygen Concentrator Store· Mar 10, 2025
Hi Wendy, thank you for your feedback. We're glad to hear you were happy with the speedy delivery, but we're sorry that the weight and carrying bag did not meet your expectations. We’d love the opportunity to assist you. Please reach out to us at 877-303-9289 between 8:00 AM - 5:00 PM MT, Monday - Saturday, and we’ll do our best to help make things right!
Great as always
By Perlmutter, M.
Response from Oxygen Concentrator Store· Mar 17, 2025
Hi Mark, thank you for your continued support! We're glad to hear you had another great experience. If you ever need anything else, feel free to reach out—we’re here to help!
My wife who is 89yr old was told that she will need to be on Oxygen 24/7. We have tanks that are not the best for daytime travel. I finally checked out OCS and found Thatcher Mills. We hit if off right fromthe start and he was the backbone to help me find the perfect Oxyenconcentrator to fit our needs. Thatcher walked me thru all the steps I needed to make this purches.
By Bill C.
Response from Oxygen Concentrator Store· Mar 17, 2025
Hi Bill, thank you for your thoughtful feedback! We're so glad that Thatcher was able to guide you through the process and help find the perfect concentrator for your wife’s needs. If you ever need anything else, feel free to reach out—we’re here to help!
