An asko hood grease filter cleaning schedule is one of the simplest maintenance habits that most directly affects how well a range hood performs, and it is also one of the easiest to let slide, since a partially saturated filter does not announce itself the way a broken motor does. It just quietly pulls less air through, and steam and cooking odors start lingering in the kitchen longer than they used to.
Why filter condition matters so much
The metal grease filters on Asko’s concealed hoods, like the CBB862W and CBB861S, are designed to trap airborne grease before it reaches the fan and internal ductwork. As they load up with grease over repeated cooking sessions, air has to work harder to pass through the same mesh, which reduces the hood’s effective suction even if the fan motor itself is running exactly as it always has. A saturated filter is also a genuine fire-risk consideration, since trapped grease is combustible, which is a real reason to take the cleaning interval seriously rather than treating it as purely a performance issue.
A realistic cleaning interval
For a household that cooks with the hood running most days, including regular frying, searing, or wok cooking, cleaning the grease filters roughly every two to four weeks keeps performance consistent. For lighter, less frequent cooking, a monthly to six-week interval is generally sufficient. High-heat, high-oil cooking styles load filters considerably faster than boiling or baking-heavy routines, so two households with the same hood can reasonably need very different cleaning frequencies.
How to clean the filters
Most metal grease filters on Asko’s concealed hoods can be run through a dishwasher on a standard cycle, which handles the degreasing more effectively than most hand-washing can manage, though checking your specific model’s manual for dishwasher compatibility before the first attempt is worth the extra few minutes. For hand washing, hot water with a degreasing dish soap and a soak period before scrubbing loosens baked-on grease considerably more than scrubbing cold residue directly.
Signs you have gone too long between cleanings
A visible, heavy grease coating that looks glossy or sticky rather than matte, a noticeable drop in how quickly steam clears from the kitchen, or a faint but persistent burnt-grease smell when the hood runs on a higher setting are all signs the cleaning interval has stretched too far. If a filter has reached this state, a single wash may not fully restore it, and repeated soaking may be needed to work back to full airflow.
Concealed hoods make this easy to forget
Because concealed and built-under hoods like the CBB-prefix models sit tucked into cabinetry rather than mounted prominently over the cooktop, it is genuinely easy to forget the filter exists at all until performance has already noticeably dropped. Setting a recurring reminder tied to your own cooking frequency, rather than relying on remembering, keeps the interval consistent.
Browse other Asko range hood maintenance guides, or book a hood service visit at /services/range-hood-repair/. Asko’s hood specifications are published at global.asko.com.
