Definitely! The HEPA filter needs to be changed, and it is super easy to do. Flip open the door that holds the gray filter and pop out the old HEPA filter. You don’t need to unscrew anything or open the case. I bought a whole new set of filters on Amazon for $16. The flame was absolutely uncontrollable, noisy, yellow, totally useless. With new filters, it’s back to being its perfect charming self. I had to run the concentrator with the new filter for about an hour before the greenlight would stay on. The first filter change was done at about 6700 hours, and I now have 12,200 hours on the concentrator.
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