Abstract: The present invention is directed to a louver cover dimensioned to substantially cover a louver of a central air conditioning system. The louver cover includes a member that is configured to face the louver, and a raised perimeter that is dimensioned to substantially surround the louver. The louver cover also includes at least one magnetic element that is configured to affix and remove the louver cover from the louver. The at least one magnetic element may be positioned on the member to engage at least one element of the louver that is attracted to a magnetic element, e.g. a ferrous containing element. The member may also have at least one groove positioned to accommodate a lever of the louver. The louver cover may also include a covering on the exterior surface of the louver cover facing away from the louver.