The removable sieve columns in your Inogen At Home machine contain the sieve filters that separate inert gases from room air and concentrate it into medical-grade oxygen. As a general rule of thumb, these columns should be replaced every 12 to 18 months to ensure your machine is producing the correct concentration of oxygen.
Replace the columns every 12 to 18 months as a general rule.
Earlier replacement may be needed depending on operating conditions. Your machine will alert you with the "O2 Service Soon" error on the display when the columns need attention.
What sieve columns do
Inside an oxygen concentrator, sieve columns are filled with a molecular-sieve material (typically zeolite) that adsorbs nitrogen from compressed room air. What passes through is the concentrated oxygen your machine delivers. Over time the sieve material loses its capacity to bind nitrogen efficiently — which is why these columns need periodic replacement to maintain the proper oxygen concentration.
Call 1-800-775-0942 with your Inogen At Home's error code — we'll help you confirm whether columns are the right replacement part.
About Main Clinic Supply
We're based in Rochester, Minnesota — home of the world-famous Mayo Clinic. We deliver free to all Mayo Clinic hospitals and local hotels. With FedEx's strong presence in Rochester, our family-owned business is able to ship late into the evening.
Inspired by Mayo Clinic's values, we prioritize helping people over making profits — embodying Dr. Mayo's 1910 mission statement: "The needs of the patient come first."


