Abstract: A heatable air filter is disclosed. The air filter may be baffleless, and generally includes an outer frame and a filter assembly therein. The outer frame and the filter assembly are fixed together with a high-temperature sealant/adhesive. The filter assembly includes a filter medium, a heating element, and one or more card combs. The heating element receives electrical power or current through electrodes that pass through and extend externally from the outer frame. The heating element can heat the entire filter medium using electricity (e.g., through the electrodes), ensuring thorough and substantially complete deactivation of biological contaminants, dryness of the filter medium during use, and an improved service life.

Abstract: An air filter and air purification technology including a frame encompassing a filter channel and a filter medium across the filter channel. The air filter and air purification technology also include one or more electrical heating components, placed in the filter channel and configured to heat the filter medium and/or air in the filter channel. Thus, the air filter has a heating function, and can heat the filter medium and the air in the filter channel according to actual working conditions and/or operations, so as to prevent moisture in the air from affecting the filtering efficiency of the filter medium. The air filter and air purification technology have the characteristics of enhancing the filtering effects and improving the service life of the filter.