There are two main criteria to judge the quality of a range hood, one is air performance and the other is efficiency grade. Air performance is mainly judged by two standards: air volume and wind pressure. According to the national standard, the air volume per minute of the range hood should not be less than 13 cubic meters. Some products indicate that the air volume per minute can reach 13 cubic meters, but the actual measurement is less than 70%. The minimum standard of wind pressure is 100PA. Some products are actually marked with 260PA, and the actual measurement is only 88PA, which is less than 1/3 of the marked quantity. If the air volume and air pressure are not enough, the range hood will lose its ability to absorb oil smoke, or it will not be able to completely discharge the oil smoke to the outside at the first time. Patek Philippe, Ou Paiken, KRRWON and Yashili range hoods failed in the actual test of air volume and air pressure, and were named!
The market supervision bureau also found several other major problems with range hoods. First, many range hoods have no energy efficiency grade label or the energy efficiency grade label is falsely high. No energy-efficient labels are strictly prohibited from being sold in the market, and false and efficient labels are suspected of fraud, which seriously damages the interests of consumers. The power cord of many products does not meet the national standards. In order to reduce the cost, the manufacturer actually made an article on the power cord. The power cord is too thin or soft, and it is muddled through with low-grade wires, or the wires are under tension.
Some range hoods actually reduce the thermal protection device. If the temperature is too high, it will burn out the motor, which will cause great security risks. Most smoking machines need to be fixed to the wall. Many range hoods don't have anti-falling devices, and the fixing device is just a simple hook, which is also a big safety problem. The range hood product with the nominal trademark OPAICN involves as many as 9 unqualified items, which can be described as the most unreliable range hood brand. Consumers must keep their eyes open.