Ltpgtdimplex ac over door heaters provide multi directional powerful and effective heating above the entrance to shops offices and almost any small doorwayltbr gtltbr gtwhen fitted above an open door the warm airflow encourages trade by allowing doors and entrances to remain amplsquoopen for businessamprsquo in many commercial applicationshowever over door heaters are also ideal for any situation where a high level fan heater is required and so they can be used anywhere