Various electromagnetically-countered microwave heating system include at least one wave source irradiating harmful electromagnetic waves and at least one counter unit emitting counter electromagnetic waves for countering the harmful waves by the counter waves. Such counter units counter the harmful waves by the counter units via various mechanisms such as, e.g., matching configurations of the counter units with those of the wave sources, matching shapes of such counter waves with shapes of the harmful waves, and the like. Various methods are also illustrated to counter the harmful waves with the counter waves using the source or wave matching, to provide the counter units, and to emit suitable counter waves. Various processes are also illustrated to provide such systems, such counter units, and the like. Various electric or magnetic shields may be used alone or in conjunction with such counter units to minimize irradiation of the harmful waves.