“Does this unit have to be vented to outside or can I use it to filter the air and then clean filters.”
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Thank you for your question. The COS-KS6U36-BK can be installed with vent and can also be converted to ductless operation with compatible carbon filter. I hope this helps, if you have any further questions, please feel free to reach out to us directly at 1-888-784-3108. This answer is valid for this model as of 03/26/2026.
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