There are many signs that you should repair/update an extractor fan. A few common signs could include:
- Strange noises coming from extractor fan
- Smoke filling the kitchen and failing to be extracted
- Odours and smoke drifting into restaurant
- Condensation issues in kitchen
- Grease build-up on outside duct
- Cooking marks or grease build-up on ceiling
- Employees complaining of stinging eyes, headaches or nausea in kitchen