Clean the Exterior:

Wipe down the chimney's exterior surfaces with a damp microfiber cloth or soft sponge dipped in warm, soapy water.

For tougher grime, create a paste with baking soda and water. Apply it to the greasy areas, leave it for a few minutes, and wipe it clean with a damp cloth.

Never use abrasive cleaners or scouring pads, as they can scratch the surface.

Clean the Grease Filters (if applicable):

Consult your chimney's manual for specific instructions on removing and cleaning the grease filters. Island chimneys may or may not have them, depending on the 
design

Most filters are washable with warm, soapy water. You can also soak them in a solution of warm water and baking soda or vinegar for stubborn grease.

Let the filters dry completely before reinstalling them.

Clean the Control Panel:

Use a damp microfiber cloth to wipe down the control panel. Avoid using harsh chemicals or excessive moisture, which can damage the electronics.

Clean the Canopy and Vent (if accessible):

Island chimneys may have a canopy (the area that captures fumes above the cooktop) and a vent (exhaust pipe) similar to wall-mounted chimneys.

If you can safely access these areas (consult your manual for accessibility instructions), use a long-handled brush and the vacuum cleaner with a hose attachment to  remove dust, cobwebs, and loose debris.

Important Note: Deep cleaning the vent system, especially if it's long and complex, might require professional help to ensure proper access and cleaning methods.

Additional Tips:

Clean the chimney filters regularly, at least once a month for frequent cooking.

Wipe down the exterior surfaces whenever you notice grease buildup.

For chimneys with stainless steel exteriors, you can use a stainless steel cleaner for a streak-free shine.

Avoid using harsh chemicals or abrasive cleaners on any part of the chimney.

If you notice any signs of damage to the chimney, loose parts, or malfunctioning features, consult a qualified appliance repair technician.

When to Call a Professional:

If your island chimney has a complex design or you're unsure about safe access to certain areas for cleaning.

If you suspect a deep cleaning is necessary beyond basic cleaning procedures.

For cleaning the vent system, especially if it's long and extends through the roof.