A kitchen exhaust fan is an essential appliance that helps remove smoke, grease, steam, and cooking odors from your kitchen. Over time, however, this hardworking device collects layers of grease, dust, and food particles that can reduce its efficiency and even become a safety hazard. Learning how to clean exhaust fan of kitchen properly is important for maintaining good air quality, improving performance, and extending the life of the fan.
This detailed guide walks you through everything you need to know about cleaning a kitchen exhaust fan safely and effectively using simple household tools.
Importance of Cleaning the Kitchen Exhaust Fan
Every time you cook, especially when frying or grilling, tiny grease particles rise into the air. These particles get trapped in the exhaust fan’s filter, blades, and motor housing. Without regular cleaning, grease buildup can cause several issues:
Reduced airflow and poor ventilation
Loud or unusual noises during operation
Persistent cooking odors
Higher electricity consumption
Increased risk of kitchen fires
Cleaning the exhaust fan regularly keeps your kitchen fresh, safe, and comfortable while ensuring the appliance works efficiently.
How Often Should You Clean the Exhaust Fan of Kitchen?
The cleaning frequency depends on how often and what type of cooking you do:
Light cooking (few times a week): Once every 3–4 months
Daily home cooking: Once every 1–2 months
Heavy frying or oily cooking: Every 2–3 weeks
Visible grease, sticky surfaces, or reduced suction are clear signs that your exhaust fan needs immediate cleaning.
Tools and Supplies Required
Before starting, gather the necessary cleaning supplies:
Dishwashing liquid or degreasing detergent
Baking soda
White vinegar or lemon juice
Warm or hot water
Soft sponge or microfiber cloth
Soft brush or old toothbrush
Rubber gloves
Bucket or sink
Screwdriver (if disassembly is needed)
Using mild cleaners and soft tools prevents damage to the fan’s surface and internal parts.
Safety Measures Before Cleaning
Because exhaust fans are electrical appliances, safety is critical:
Turn off the exhaust fan and unplug it from the power supply.
If the fan is hardwired, switch off the circuit breaker.
Allow the fan to cool down completely.
Wear gloves to protect your hands from grease and sharp edges.
Never clean the exhaust fan while it is connected to electricity.
Step-by-Step Guide on How to Clean Exhaust Fan of Kitchen
Step 1: Remove the Fan Cover or Filter
Most kitchen exhaust fans have a removable metal mesh filter or protective cover. Carefully detach it by unclipping or unscrewing it. Place screws in a safe container so they don’t get lost.
The filter usually collects the most grease, making it the first and most important part to clean.
Step 2: Soak the Filter in a Degreasing Solution
Fill a sink or bucket with hot water and add:
A few drops of dishwashing liquid
Two tablespoons of baking soda
Optional: Half a cup of white vinegar for extra grease removal
Submerge the filter completely and let it soak for 20–30 minutes. This loosens hardened grease and makes scrubbing easier.
Step 3: Scrub and Rinse the Filter Thoroughly
After soaking, scrub the filter gently using a sponge or soft brush. Pay attention to corners and mesh areas where grease tends to accumulate.
Rinse the filter under running water until all soap and grease residues are removed. Shake off excess water and leave it to air dry completely.
Step 4: Clean the Fan Blades
With the filter removed, you can access the fan blades:
Dip a cloth or sponge in warm, soapy water
Hold each blade steady and wipe off grease carefully
Use a toothbrush for tight or hard-to-reach areas
Avoid using excessive water, as moisture near the motor can cause damage.
Step 5: Wipe the Motor Housing Carefully
The motor housing should be cleaned gently:
Use a slightly damp cloth to remove grease and dust
Never pour water or spray cleaning solution directly onto the motor
If the motor area is very greasy, repeat gentle wiping until clean.
Step 6: Clean the Exhaust Fan Cover and Casing
The outer cover or casing often accumulates grease and dust:
Wipe it with warm, soapy water using a sponge
Use baking soda paste or vinegar to remove stubborn stains
Rinse and dry thoroughly with a clean cloth
Avoid abrasive scrubbers that could scratch or dull the surface.
Step 7: Clean the Surrounding Wall and Cabinet Area
Grease particles don’t stop at the fan—they spread to nearby surfaces:
Wipe the wall and cabinets around the fan with a vinegar-water solution
Dry with a clean cloth
Keeping the surrounding area clean prevents grease from quickly re-depositing on the fan.
Step 8: Reassemble the Exhaust Fan
Once all parts are completely dry:
Reattach the filter and cover
Tighten screws securely but gently
Restore power and turn on the fan to test it
A freshly cleaned exhaust fan should run quieter and provide stronger airflow.
Natural Cleaning Methods for Kitchen Exhaust Fans
If you prefer eco-friendly options, natural ingredients work very well:
Baking Soda
Baking soda breaks down grease and neutralizes odors. Use it in soaking water or as a paste for stubborn stains.
White Vinegar
Vinegar dissolves grease and removes bad smells. It is ideal for wiping blades and casings.
Lemon Juice
Lemon juice cuts grease naturally and leaves a fresh scent behind.
These natural cleaners are safe, affordable, and effective for regular maintenance.
Common Mistakes to Avoid While Cleaning
Cleaning the fan without turning off power
Using steel wool or harsh abrasive cleaners
Allowing water to enter the motor
Reinstalling parts before they are fully dry
Ignoring regular cleaning schedules
Avoiding these mistakes ensures safe and effective cleaning.
Tips to Keep Your Kitchen Exhaust Fan Clean Longer
Turn on the exhaust fan before you start cooking
Wipe the exterior weekly with a damp cloth
Clean the filter lightly every two weeks
Reduce oil splatter by using lids or splatter guards
Ensure good kitchen ventilation
Small maintenance habits greatly reduce heavy grease buildup.
Benefits of a Clean Kitchen Exhaust Fan
Regular cleaning offers multiple advantages:
Better ventilation and airflow
Fresher, odor-free kitchen environment
Lower fire risk
Reduced noise during operation
Improved energy efficiency
Extended lifespan of the appliance
A clean exhaust fan contributes directly to a healthier home.
When Professional Cleaning May Be Needed
If the exhaust fan has not been cleaned for years, or if it shows signs of motor trouble, professional servicing may be required. Experts use specialized tools and degreasers to clean internal components safely and restore proper function.
Conclusion
Understanding how to clean exhaust fan of kitchen is an essential part of home maintenance that directly impacts air quality, safety, and appliance performance. With simple tools, natural cleaning agents, and a consistent routine, you can keep your exhaust fan free from grease and working efficiently.
Regular cleaning not only improves ventilation but also creates a cleaner, healthier cooking environment. By making exhaust fan maintenance a habit, you ensure your kitchen remains fresh, safe, and comfortable for years to come.