空气净化器中有多种不同的技术和介质，使它能够向用户提供清洁和安全的空气。常用的空气净化技术有：吸附技术、负（正）离子技术、催化技术、光触媒技术、超结构光矿化技术、HEPA高效过滤技术、静电集尘技术等；材料技术主要有：光触媒、活性炭、极炭心滤芯技术、合成纤维、HEAP高效材料、负离子发生器等。现有的空气净化器多采为复合型，即同时采用了多种净化技术和材料介质。
There are many different technologies and media in the air purifier, which enables it to provide clean and safe air to users. Commonly used air purification technologies are: adsorption technology, negative (positive) ion technology, catalytic technology, photocatalyst technology, ultra-structured light mineralization technology, HEPA high-efficiency filtration technology, electrostatic dust collection technology, etc. Material technology mainly includes photocatalyst, activated carbon, polar carbon core filter technology, synthetic fibers, HEAP high-efficiency materials, negative ions. Generator, etc. Most of the existing air purifiers are of composite type, i.e. a variety of purification technologies and materials are used simultaneously.