A commercial kitchen exhaust hood removes heat, smoke, vapour and grease-laden air from the cooking line. When the hood, baffle filters or ducting are not maintained, airflow reduces, grease builds up and the kitchen becomes hotter, smokier and harder to clean.
Quick maintenance schedule
- Daily: wipe exterior hood surfaces and inspect filters for visible grease.
- Weekly: remove and clean baffle filters, check lighting and listen for unusual fan noise.
- Monthly: inspect accessible duct joints, fan operation, drain channels and surrounding ceiling area.
- Periodic professional service: arrange deep cleaning based on your menu volume, frying load and grease output.
Daily hood cleaning checklist
After service, allow equipment to cool and wipe the exterior hood, canopy edges and accessible splash areas with a suitable degreasing cleaner. Do not spray electrical switches, lights or fan controls directly. Empty any grease collection channel or cup only when safe and cool.
How to clean commercial hood filters
Before permitted filter removal, follow the actual hood system’s safe shutdown and isolation procedure so fans or automatic cleaning controls cannot start unexpectedly. Allow cooking equipment, hood surfaces and grease to cool, use safe access and leave electrical or internal work to qualified personnel. Do not shut down extraction while solid fuel or embers are still burning; defer cleaning until safe shutdown is possible. Do not tamper with fire-suppression components. Remove baffle filters according to the hood design, wash with an approved degreaser, rinse and dry before refitting. Do not cook with missing, damaged or poorly fitted filters. Keep a rotation of spare filters if your kitchen has high-volume frying or tandoor work.
Why ducting maintenance is important
Grease and dust can collect inside ducting beyond the visible hood. Grease deposits in the hood, duct or fan are also a fire hazard. Arrange qualified full-system inspection and cleaning according to grease load, manufacturer instructions and applicable local requirements. Reduced airflow, smoke escaping into the kitchen, strong odour, grease dripping or excessive heat are signs that the system needs attention. External ducting, bends, access panels and the exhaust fan all need periodic inspection by a qualified service team.
Weekly inspection points
- Confirm air is being pulled effectively from the cooking line.
- Check filters sit securely and are not bent or clogged.
- Look for grease marks around hood joints and drain channels.
- Listen for vibration, rattling or unusual fan noise.
- Keep the cooking line and fire-safety equipment accessible.
Common mistakes to avoid
- Running the kitchen with clogged or missing filters.
- Cleaning only the visible canopy while ignoring the duct and fan.
- Using water carelessly near electrical components.
- Blocking airflow with stored cartons or equipment around the hood line.
- Waiting until smoke enters the kitchen before arranging service.
When should you call a professional?
Arrange qualified inspection if you notice poor suction, persistent smoke, fan vibration, electrical issues, grease leakage, damaged duct joints or a strong burnt smell. Do not attempt internal duct or fan repairs without trained support.
Planning a maintainable exhaust system
A good exhaust layout starts with the right hood size, capture area, duct route, fan capacity and access for future cleaning. Share your cooking equipment, menu, kitchen dimensions and expected peak production before finalising a hood and ducting system.
FAQs
How often should restaurant hood filters be cleaned?
Frequency depends on cooking volume and grease output. Inspect them daily and clean them on a routine schedule suitable for your operations.
Why is smoke coming back into the kitchen?
Clogged filters, insufficient airflow, duct blockage, fan problems or poor hood coverage can contribute. A qualified inspection can identify the cause.
Can I clean commercial ducting myself?
Visible exterior surfaces can be maintained in-house. Internal duct and exhaust-fan cleaning should be handled safely by trained professionals.
Need an exhaust hood or ducting plan?
Gurubhai Equipments can help plan an exhaust system around your cooking line, kitchen size and ventilation route. Share your equipment list, dimensions and menu for suitable guidance.