A:Answer Hello,
Zephyr Typhoon, Hurricane and Cyclone hoods are filter-less with a self cleaning feature. The
centrifugal blower system automatically liquefies cooking residue in its internal housing. All hoods
are equipped with dishwasher safe residue cups to collect cooking residue during the self cleaning
function. Cleaning should be performed approximately once a month under normal usage of 1 hour per day. The hood may need to be cleaned more often if you cook heavily. Thank you for your inquiry! - Zephyr