1. Visual inspection. Mainly depends on whether the hood shell is flat, whether the lampblack pipeline is smooth and whether the wind wheel is uniform.
2. Noise detection. Use professional testing instruments to test the suction and exhaust noise of the range hood and judge whether it meets the national standards.
3. Detection of air extraction and exhaust regulation. Check whether the exhaust air volume of the range hood meets the requirements and whether the air volume can be adjusted at will.
4. Electrical and safety inspection. Check whether the electrical part of the range hood is normal, such as whether there is leakage or poor wire contact.
5. Filter test. Check whether the efficiency of the fume filter is up to standard, and whether it can be easily disassembled and cleaned.
These are the basic detection methods of range hoods. Consumers can test according to the above methods before buying, so as to choose a safe and efficient range hood equipment.