Return Policy


Unopened Items

For unopened items, you may return them within 30 days. Refunds will be issued in the original form of payment, minus any discounts, bank charges (usually 4%), shipping, and a 15% restocking fee. Return shipping fees apply.


If you received a ‘Free Shipping’ order, we will deduct the original shipping cost. The shipping cost would be applicable for both ways.


Please note there might be special circumstances where we might have had to ship from our international warehouse, in which case the original shipping cost from the international warehouse to the destination will be applicable. Return shipping cost, as applicable, from the customer's address to Optimal Breathing's warehouse will also be chargeable.

Store Credit

Beyond the initial 30 days, refunds are not available. However, within 45 days, you can opt for store credit, with shipping fees subtracted, as previously explained.

Opened Items

Turbo Oxygen System

For opened and unused items, refunds will be issued in the original form of payment, with the following deductions:

  • Any applicable discounts

  • Shipping charges

  • Oxygen Reservoir Bag price: $849 for 900 Liter Bag and $649 for 500 Liter Bag

  • 15% Restocking fee

  • 4% Bank Charges

For opened and used items, refunds will be issued in the original form of payment, with the following deductions:

  • Any applicable discounts

  • Shipping charges

  • Oxygen Reservoir Bag price: $849 for 900 Liter Bag and $649 for 500 Liter Bag

  • Restocking fee for O2E2 Oxygen Machine:


    -- If the machine is used for less than 50 hours, a 50% restocking fee will be deducted from the refund.
    -- If the machine is used between 50 and 100 hours, a 75% restocking fee will apply.
    -- For machines used for more than 100 hours, unfortunately, we will not be able to issue any refund.

  • 4% Bank Charges

O2E2 Oxygen Machines

Here’s the return policy for O2E2 Machines:

  • If the machine is unused, a 15% restocking fee will be deducted from the refund, along with 4% for bank charges and any applicable discounts and shipping fees.

  • If the machine is used for less than 50 hours, a 50% restocking fee will be deducted from the refund, along with 4% for bank charges and any applicable discounts and shipping fees.

  • If the machine is used between 50 and 100 hours, a 75% restocking fee will apply along with 4% for bank charges, and any applicable discounts and shipping fees.

  • For machines used for more than 100 hours, unfortunately, we will not be able to issue any refund.

Oxygen Reservoir Bags

For Oxygen Reservoir Bag returns, we will accept the return only if the package is unopened. Once the package is opened, unfortunately, we will not be able to process the return.

Return Instructions

  • Contact us at hello@optimalbreathing.com for an authorization number before returning items.

  • Securely package items in sturdy packaging.

  • Indicate whether you prefer an exchange or a refund.

  • Include your name, address, telephone number, and reason for return/refund.

  • For optimal service and tracking, use USPS Priority or UPS Ground Shipping for O2E2 Oxygen Machines.

  • International transactions - Customers making purchases from outside of United States will have to abide by the laws of the land. Optimal Breathing will not be responsible for any import restrictions.

Ship Returns to


Optimal Breathing

282 Fischer Rd

Fort Mill, SC 29715


For any questions or concerns regarding returns or refunds, email us at hello@optimalbreathing.com or call us at +1-704-597-6775.