Respiratory health has always been the focus of public attention, so air purifiers, as an important tool to improve indoor air quality, have been favored by consumers. However, there are many brands of air purifiers on the market with different performances, and consumers are often confused when it comes to choosing. In order to guide consumers to choose high-quality products, China Brand Construction Indoor Air Purification Brand Cluster, Guangdong Indoor Environmental Sanitation Industry Association, Zhongguancun Online, and the National Air Purification Product Inspection and Testing Center have carried out the quality sampling, comparison and horizontal evaluation of the top ten brands of air purifier products that users pay attention to in the second half of 2023.
This horizontal evaluation is based on the relevant requirements of the new national standard of "Air Purifiers" (GB/T18801-2022) and the "Classification of Performance Indicators of Air Purifiers" (T/GIEHA065-2023). The products are: 720 (Huawei Zhixuan) KJ600F-E600S, IAM M8 pro, Akachi AKJ800F-Z02, Bruyar 3650i, Xinyi A5, 352 X86C, Xiaomi 4MAX, Midea KJ600G-RX600, Gree KJ680G-A01, Philips AC6678.
The 10 products will be tested for formaldehyde CADR, particulate matter CADR, noise, and sterilization performance.
Before the test, I would like to synchronize with you, because the four brands of Midea, Xiaomi, Philips and Gree did not give feedback and did not provide complete data for the horizontal evaluation notification letter, so there was a significant lack of horizontal evaluation information, which not only affected the comprehensiveness of the horizontal evaluation results, but also made these four brands slightly inferior in the final evaluation.
Formaldehyde CADR test: The formaldehyde CADR of 10 products was above 400 m3/h
The formaldehyde CADR will be tested in a 30 m3 chamber and an 81 m3 chamber, with an ambient temperature of 23 ± 2 °C and an ambient humidity of 50% ± 5%RH. Formaldehyde is added to the test chamber with a gas pollutant generator, and after the standard concentration is reached, the fan is stirred for 10 minutes, and then the maximum wind speed of the machine is turned on, and the data is collected once every 5 minutes, and the sampling time is 60 minutes. The same machine was tested three times, and the prototype was allowed to stand for at least 24 hours between the two tests, and the amount of clean air calculated from the last test was used as the final result.
Test results: The formaldehyde CADR of 10 products was above 400 m3/h; Among them, the performance of the IAM M8 pro and Xinyi A5 air purifiers is particularly eye-catching. The measured CADR of formaldehyde for the IAM M8 pro is up to 150.3% of its nominal value, while the Xinyi A5 also reaches 138.5% of its nominal value. This data fully demonstrates the significant advantages of these two products in terms of air purification efficiency, which is far above the average of similar products.
Particulate CADR test: Bruyard 3650i, Akachi AKJ800F-Z02 perform well
Particulate matter CADR tests were also carried out in 30 m3 chambers and 81 m3 chambers with ambient temperature of 23 ± 3 °C and ambient humidity of 50% ± 10%RH. Connect the cigarette burner, blow the cigarette smoke into the test chamber with low-pressure air, and stir the fan for 10 minutes after reaching the standard concentration. Then, turn on the machine's maximum wind speed gear, collect data every 2 minutes, and test continuously for 20 minutes.
Test results: Bruyard 3650i particulate matter CADR 121.6% of the nominal value. It was followed by the Akachi AKJ800F-Z02, which achieved a measured particulate CADR of 109.05% of the nominal value, also demonstrating excellent particulate matter purification capabilities.
Noise test: can be controlled within the new national standard
In the semi-anechoic chamber, the background noise is 15.3 decibels, and the maximum wind speed of the machine is turned on to record the noise during the operation of the machine.
Test results: With the significant increase in the clean air value of the air purifier, the noise value has not increased significantly, but can generally be controlled within the new national standard, which clearly reflects that with the high-quality and rapid development of the air purification industry, the product performance is constantly improving and optimized. Among them, the 352 X86C and 720 (Huawei Zhixuan) KJ600F-E600S air purifiers are particularly excellent in silent performance, the noise level of the 352 X86C is 6.6 decibels lower than the national standard, and the 720 (Huawei Zhixuan) KJ600F-E600S has also achieved a significant reduction of 5.3 decibels.
Sterilization performance test: the sterilization performance has reached 99.99%
The sterilization performance test was carried out in a 30 m3 test chamber, the ambient temperature was adjusted to 23-25 °C, the ambient humidity was adjusted to 50%-70%RH, and the Staphylococcus albicans 8032 strain was used, and the maximum wind speed of the machine was turned on for 60 minutes.
Test results: All the products met the standard requirements of the new national standard (GB/T18801-2022) for air purifiers, and the sterilization performance reached 99.99%.
From the results of this horizontal evaluation, all horizontal evaluation products meet the standard requirements of the new national standard of "air purifier" (GB/T18801-2022), which undoubtedly proves the impact of the new national standard of purifiers on air purifier products and provides a guarantee for consumers to choose products.
Of course, if you want to choose products more stringently, you can refer to the "Air Purifier Performance Index Classification" (T/GIEHA065-2023) and other relevant requirements, in this horizontal evaluation, IAM M8 pro and Xinyi A5 in accordance with the national standard, reference group standard, and according to the requirements of the air purifier sterilization, purification performance classification certification rules, meet the 5-star evaluation requirements of air purifiers. It's a positive response to consumer demand and a model for driving the industry forward.
Although all the participating products meet the requirements of the national standard, some brands still have room for improvement in terms of silent performance, purification performance and formaldehyde purification ability. It is hoped that through this horizontal evaluation, we can provide consumers with more scientific and objective purchase suggestions and promote the healthy development of the industry. At the same time, we also expect more consumers to pay attention to air quality issues, choose high-quality air purifier products, and create a healthier and more comfortable living environment for themselves and their families.
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