How many times can zeolite sieves be regenerated before replacement?

Zeolite sieves can typically be regenerated hundreds of times before replacement, depending on the conditions of use, contaminants, and the type of zeolite. In oxygen concentrators, zeolites often last 5 to 10 years with regular use and proper maintenance. However, prolonged exposure to moisture, dust, or high contaminants can degrade the zeolite faster, reducing its adsorption efficiency. Regular inspection and maintenance can help determine when the zeolite is no longer effective and requires replacement.