Before You Start: Safety and Preparation
Keeping your oven extractor hood clean is vital for efficient kitchen ventilation and can prevent potential fire hazards from accumulated grease. The process involves cleaning both the exterior unit and, most importantly, the grease filters. Before embarking on this task, ensure you gather the necessary supplies and prioritise safety. Always disconnect the power supply to the extractor fan at the fuse box before beginning any cleaning to prevent accidental activation. If your cooker hood is integrated or complex, consult its manual for specific instructions.
The frequency of cleaning depends on your cooking habits. For most households, a thorough clean of the filters once a month is advisable, with the exterior and internal components requiring attention every three to six months. Heavy frying or frequent high-heat cooking will necessitate more regular cleaning to prevent stubborn grease build-up. Ensure you have adequate ventilation in your kitchen during the cleaning process, especially if using strong cleaning agents.
Essential Cleaning Supplies
- Rubber gloves: To protect your hands from grease and cleaning solutions.
- Degreaser: A powerful kitchen degreaser is key for breaking down stubborn grease. Look for products specifically designed for kitchen appliances.
- Dish soap: Mild dish soap can be used for general cleaning and for washing filters.
- Warm water: For rinsing and creating cleaning solutions.
- Baking soda: An excellent natural abrasive and deodoriser.
- Microfibre cloths: For wiping down surfaces and polishing.
- Soft brush or old toothbrush: To scrub stubborn grime, especially on filters.
- Bucket or sink: For soaking filters.
- Screwdriver (if needed): To remove certain types of filters or panels.
- Newspaper or old towels: To protect your hob or work surfaces from drips.
It's important to identify the type of filters your cooker hood uses. Most common are metal mesh filters, which are reusable and washable. Some models may also feature charcoal filters, which are designed to absorb odours in recirculating systems and typically cannot be washed; these require periodic replacement according to the manufacturer's guidance. Always confirm your hood's filter type before proceeding.
Identifying your cooker hood's filter type is the most critical first step before gathering supplies.
Cleaning the Extractor Hood Filters
The grease filters are the workhorses of your extractor hood, trapping airborne grease particles from your cooking. Over time, these particles build up, reducing the fan's efficiency and potentially becoming a fire hazard. Regular cleaning, typically monthly, is essential.
How to Clean Metal Mesh Filters
Metal mesh filters are designed to be cleaned and reused. The most effective method involves soaking and scrubbing to dislodge the embedded grease.
- Remove the filters: Locate the release mechanism, usually a latch or clip, on the front or side of the filters. Gently push or pull to detach them. Note their orientation so you can refit them correctly.
- Soak the filters: Fill a large sink or bucket with hot water and add a generous amount of strong degreaser or dish soap. For tougher grime, you can also add a cup of baking soda. Submerge the filters completely and let them soak for at least 30 minutes, or longer if heavily soiled.
- Scrub away grease: After soaking, use a soft brush or an old toothbrush to scrub away any remaining grease and grime. Pay close attention to the mesh layers to ensure all particles are dislodged. Rinse thoroughly under hot running water to remove all soap and loosened grease.
- Dry completely: Shake off excess water and leave the filters to air dry completely on a rack or clean tea towel. Ensure they are entirely dry before refitting, as residual moisture can affect performance or even damage the fan motor.
Cleaning Charcoal Filters
Charcoal filters are usually found in recirculating cooker hoods and are not washable. They absorb odours and need to be replaced when saturated. Check your cooker hood's manual for the recommended replacement interval, which can range from three to six months depending on usage. When it's time for replacement, simply unclip the old filter and clip in the new one.
Ensure your metal filters are completely dry before reinstallation to prevent water ingress into the fan motor.
Troubleshooting Filter Cleaning
- Stubborn grease: For extremely persistent grease, try making a paste of baking soda and water. Apply it to the affected areas and let it sit for an hour before scrubbing and rinsing. Commercial oven cleaner, used sparingly and with extreme caution (and always rinsed off thoroughly), can also be effective but check your filter material compatibility first.
- Discoloured filters: If metal filters appear permanently discoloured or damaged, they may need replacing. Minor discolouration from grease is usually cosmetic and doesn't affect performance if thoroughly cleaned.
Cleaning the Extractor Hood Unit Exterior and Interior
While the filters capture the majority of grease, the exterior and internal parts of the cooker hood also accumulate a fine layer of grease and dust. Cleaning these components ensures the entire appliance functions efficiently and looks its best.
Exterior Cleaning
The outer casing of your extractor hood is usually made of stainless steel, painted metal, or glass. The cleaning method will depend on the material.
- Prepare the area: Lay down newspaper or old towels over your hob or work surfaces to catch any drips from cleaning solutions.
- Apply cleaner: For stainless steel, use a dedicated stainless steel cleaner or a mild solution of warm water and dish soap. Spray the cleaner onto a microfibre cloth, not directly onto the unit, to avoid overspray getting into vents or electrical components. For painted surfaces or glass, a general kitchen cleaner or diluted vinegar solution can be effective.
- Wipe down: Gently wipe the exterior surfaces, paying attention to control panels and buttons. For stainless steel, always wipe in the direction of the grain to avoid scratching.
- Polish: After cleaning, use a dry, clean microfibre cloth to buff the surfaces and restore shine. For stainless steel, a final polish with a dedicated stainless steel polish can offer extra protection and a streak-free finish.
Interior Cleaning
Cleaning the interior is often overlooked but is essential for removing grease build-up that can affect air flow and potentially become a fire risk. Access to the interior may require removing more panels, depending on your model.
- Access the interior: This may involve removing the metal filters and possibly a splashback panel or housing cover. Consult your appliance manual if unsure.
- Degrease the interior surfaces: Spray a degreasing cleaner onto a cloth and wipe down the inside surfaces, including the fan housing and any accessible ducting connections. Be careful not to spray directly onto the fan motor or electrical components.
- Clean fan blades (if accessible): If the fan blades are accessible and removable, clean them with a degreaser and a soft brush. If not, wipe them gently with a damp, degreaser-soaked cloth, taking care not to push them or apply excessive force.
- Wipe and dry: Use a clean, damp cloth to remove any residue from the cleaning agent, then dry all surfaces thoroughly with a clean microfibre cloth.
Always ensure all cleaning solutions are thoroughly removed from internal components to prevent them from being drawn into the fan motor during operation.
Special Considerations for Different Hood Types
- Integrated Cooker Hoods: These are built into cabinetry, meaning access to internal parts might be more limited. Focus on external cleaning and filter maintenance. If internal cleaning is necessary, consult the specific manual as panels may be fixed differently.
- Recirculating Cooker Hoods: These do not vent externally, so effective charcoal filter maintenance is paramount. The internal grease build-up might be less pronounced than in ducted hoods, but regular cleaning of metal filters and interior surfaces is still vital for air quality.
Reassembly and Performance Check
Once all parts are clean and thoroughly dry, it's time to reassemble your extractor hood and ensure it's working as it should. Correct reassembly is crucial for both efficiency and safety.
Refitting Filters and Components
- Check filters: Ensure metal grease filters are completely dry. If you've replaced charcoal filters, ensure the new ones are correctly seated.
- Reinstall filters: Carefully slide or clip the metal grease filters back into their designated slots. Make sure they lock securely into place. If they feel loose or don't sit correctly, double-check their orientation and the fastening mechanism.
- Replace panels: Reattach any panels or covers you removed to access the interior. Ensure all screws are tightened appropriately and panels are flush.
Testing the Extractor Hood
After reassembly, it's time to test the unit to confirm it's functioning optimally.
- Restore power: Go back to your fuse box and switch the power supply for the extractor hood back on.
- Check fan operation: Turn on the extractor fan at its lowest setting. Listen for any unusual noises, such as rattling or grinding, which could indicate a loose part or a problem with the motor.
- Test suction: Hold a piece of kitchen paper or a damp cloth approximately 10-15 cm below the hood. It should be drawn towards the unit, indicating good suction. Test this on all fan speed settings.
- Inspect lights: Check that any built-in lights are working correctly.
A properly functioning extractor hood should draw air smoothly and quietly, effectively removing steam and cooking odours.
Troubleshooting Common Issues Post-Cleaning
- Weak suction: This could mean the filters are not fitted correctly, are still damp, or are the wrong type for your recirculating system. Ensure all parts are dry and seated firmly. If using charcoal filters, check if they need replacing. For ducted hoods, ensure the ducting itself isn't blocked.
- Noisy operation: This often points to a loose component, such as a filter not fully clipped in, or a foreign object that may have entered the fan housing. It could also indicate a motor issue requiring professional attention.
- Rattling or vibration: Ensure filters are securely locked in place and any internal panels are refastened correctly. If the vibration persists, it may be a sign of motor imbalance.
- Odours persist: For ducted hoods, this means the grease filters need more frequent cleaning or the ducting may require professional cleaning. For recirculating hoods, the charcoal filters are likely saturated and need replacement.
If you notice any persistent issues or strange noises after cleaning, do not continue to operate the hood. Consult your appliance manual or contact a qualified appliance engineer.
Preventative Maintenance and Long-Term Care
Regular cleaning is the most effective form of preventative maintenance for your oven extractor hood, but a few additional practices can help keep it in peak condition for longer.
Regular Cleaning Schedule
Establish a routine that suits your cooking habits:
- Monthly: Clean metal grease filters thoroughly. Wipe down the exterior.
- Every 3-6 Months: Clean the interior surfaces and fan housing. Replace charcoal filters in recirculating models as per manufacturer recommendations. Inspect ducting for obstructions if accessible.
Tips for Reducing Grease Build-Up
- Use the correct fan speed: Match the fan speed to the intensity of your cooking. Higher speeds are more effective at capturing grease and steam.
- Ventilate while cooking: Even with an extractor, opening a window can improve overall air circulation in the kitchen, reducing the load on the hood.
- Wipe spills immediately: Clean up any food spills on or around the hood as soon as they happen to prevent them from hardening and becoming difficult to remove.
When to Call a Professional
While most cleaning tasks are DIY-friendly, there are instances where professional help is advisable:
- Persistent strong odours: If cleaning filters and replacing charcoal ones doesn't resolve lingering smells, the ducting system might need professional cleaning or inspection for blockages.
- Electrical faults: If the lights or fan fail to operate, or if you notice any sparks or burning smells, switch off the power immediately and call a qualified electrician or appliance repair technician.
- Damaged components: If you discover any cracked plastic, bent metal, or damaged fan blades during cleaning, professional repair or replacement might be necessary.
- Complex ducting issues: For ducted hoods, blockages deep within the ducting system can be difficult to clear without specialised equipment.
Adhering to a consistent maintenance schedule will not only keep your kitchen air cleaner but also extend the lifespan of your extractor hood.