Filter assembly and floor cleaner

A floor cleaner, comprising:

• a housing;
• an air flow pathway through the housing and comprising a dirty inlet and a clean outlet;
• a working air treatment assembly defining a portion of the air flow pathway;
• a suction source defining a portion of the air flow pathway and in fluid communication with the working air treatment assembly;
• at least one electrically-powered component;
• a filter assembly removably installed on the housing, comprising:
• a filter having an intake side and an exhaust side, the filter located in the air flow pathway;
• a filter housing comprising a frame having an open area through which air may pass, the filter supported within the frame;
• a seal on the filter housing, the seal extending around the exhaust side of the filter;
• and
• a handle projecting from the filter housing;
• and
• a filter detection mechanism comprising:
• a permanent magnet disposed on the handle of the filter assembly;
• and
• a Hall Effect sensor positioned to detect the permanent magnet when the filter assembly is correctly installed on the housing;
• wherein the filter detection mechanism is configured to allow operation of the at least one electrically-powered component when the permanent magnet is detected by the Hall Effect sensor and to prevent operation of the at least one electrically-powered component when the permanent magnet is not detected by the Hall Effect sensor.