净化空气的方式很多，洁净厂房设计施工效果会因此产生差异，不同类型的空气净化器在选购和使用过程中的注意事项也略有不同。
Clean air in many ways, clean plant design and construction effect will therefore produce differences, different types of air purifier in the purchase and use of the process of attention is also slightly different.
过滤型。此类空气净化器是利用多孔性过滤材料，把悬浮在空气中的微粒截留并收集起来。它一般使用HEPA滤网或活性炭滤网，可以起到过滤微小颗 粒，吸附甲醛、苯、氨气等有害气体的作用。如果室内空气不是特别污浊的话，按照平均一天使用6—8小时计算，活性炭的使用寿命仅有6个月左右，就必须更换 滤芯。现在多数净化器上也有更换滤芯的指示灯，若不及时更换，净化器就起不到应有作用了。另外，这类净化器一般都有多层过滤，注意在维护保养后不要将过滤 网安反，否则会影响净化效果，减少使用寿命。
Filtration type. This kind of air cleaner is the use of porous filter material, the suspended particles in the air to intercept and collect. It is generally used HEPA filter or activated carbon filters, can be played to filter tiny particles, adsorption of formaldehyde, benzene, ammonia and other harmful gases. According to the average day use 6 - 8 hours, the service life of the activated carbon only about 6 months, we must replace the filter, if not particularly polluted indoor air. Now most of the filter on the replacement of the filter indicator, if not timely replacement, the purifier will not play a role. In addition, this type of filter has a general multi-layer filter, note that in the maintenance of the filter will not be the anti filter, otherwise it will affect the purification effect, reduce the service life.
静电型。静电式空气净化器内部带有上千伏特的高压，可通过电离使颗粒物带电，而后被吸附。所以，购买此类产品时，一定要查看该产品的认证证书或 者国家家用电器质量监督检验中心出具的合格检验报告，以免因产品质量不合格而产生危险。一般情况下，此类空气净化器的集尘板都是比较锋利的金属片，清理时 易划伤人，不建议老人使用。
Electrostatic type. Electrostatic air purifier with a high pressure of the internal, can be charged by ionizing particles, and then adsorbed. So the purchase of such products, be sure to check the qualified inspection report issued by the certification of the product or national household electrical appliances quality supervision and inspection center, so as to avoid substandard product quality risk. Under normal circumstances, the dust of the air purifier of the dust board are relatively sharp metal pieces, easy to scratch when cleaning, do not recommend the use of the elderly.
光触媒型。由于光触媒只能起到催化剂作用，本身不参与化学反应，所以光触媒空气净化器的作用效果比较持久。此类产品清理维护起来比较方便，中老年人可以选用。由于光触媒必须经光照催化才能产生反应，使用时，切忌将光触媒材料或设计用来照射该材料的光源遮住。
Type of photocatalyst. Due to the photocatalyst can only play acting as catalyst, itself does not participate in chemical reactions, so the effect of photocatalyst air purifier more durable. Such products to clean up and maintenance more convenient, the elderly can choose. Due to the photocatalyst must the light catalyst to react, when using, avoid by all means is the photocatalyst material or design used to cover the light source of the irradiated material.
负离子型。负离子装置在产生负离子的同时，会产生一定量的臭氧。如果臭氧浓度过高，可能危害健康。所以消费者购买带有负离子功能的空气净化器 时，要注意机器产生的臭氧浓度不应过高。一是用鼻子闻，如果刺激性气味很重，意味着臭氧浓度可能超标；二是查看检验报告是否合格。有过敏史的消费者，应尽 量避免选用此类产品。
Negative ion type. Negative ion device generates a certain amount of ozone at the same time. If the ozone concentration is too high, it may endanger the health. So consumers buy with a negative ion function of the air purifier, to pay attention to the ozone concentration of the machine should not be too high. First, with the nose to smell, if the pungent smell is very heavy, means that the ozone concentration may exceed the standard; the two is to see if the test report is qualified. There are allergic history of consumers, should try to avoid the use of such products.
紫外线型。过量的紫外线会引起光化学反应，可使人体机能发生一系列变化，尤其是对皮肤、眼睛及免疫系统等造成危害。所以购买和使用此类产品时，要注意不应有紫外光泄漏，即不能看到灯管裸露，以免带来伤害。
Ultraviolet line. Excessive ultraviolet radiation can cause photochemical reactions, can make a series of changes in human function, especially for the skin, eyes and immune system, etc.. So when the purchase and use of such products, we should pay attention to the need to do not have UV light leakage, that can not see the light tube exposed, so as to avoid damage.
In general, the filter type air cleaner can be used for the purification of the particulate matter, and the other is better. At this stage, the composite air purifier in the market share is also very large, clean plant design and construction of consumers can be based on their own needs to buy with the corresponding functions of the product.