Laundry treatment apparatus, in particular dryer, condensate dryer or heat pump tumble dryer, the apparatus comprising: a control unit for controlling the operation of the laundry treatment apparatus, an apparatus cabinet, a laundry treatment chamber for treating laundry using process air, a process air circuit for circulating the process air, a heat exchanger arranged in the process air circuit for cooling the process air and condensing humidity from the process air, a condensate collector assigned to the heat exchanger for collecting condensate condensed at the heat exchanger, a fluff filter arranged in the process air circuit upstream the heat exchanger for filtering fluff from the process air passing the fluff filter, a condensate pump in liquid connection to the condensate collector and being adapted to convey the condensate, a condensate directing means receiving the condensate pumped by the condensate pump and for selectively directing the condensate flow under the control of the control unit a) to a conduit guiding the condensate flow towards the fluff filter for washing at least a portion of the filter surface by removing fluff, or b) to a condensate sink; characterized by a washing liquid collector assigned to the fluff filter and being adapted to collect washing liquid from the fluff filter, wherein the fluff filter and the washing liquid collector are arranged such that the washing liquid flows along at least a portion of the surface of the fluff filter and carries fluff washed off from the surface into the washing liquid collector which is adapted to collect the washing liquid contaminated with fluff, wherein the washing liquid collector is separate from the condensate collector, wherein the condensate collector exclusively collects condensate from the heat exchanger and receives no or essentially no washing liquid from filter washing, and wherein the fluff filter is positioned within a process air channel section which is located in one or more of: a bottom region within the apparatus cabinet, and the basement of the apparatus. a control unit for controlling the operation of the laundry treatment apparatus, an apparatus cabinet, a laundry treatment chamber for treating laundry using process air, a process air circuit for circulating the process air, a heat exchanger arranged in the process air circuit for cooling the process air and condensing humidity from the process air, a condensate collector assigned to the heat exchanger for collecting condensate condensed at the heat exchanger, a fluff filter arranged in the process air circuit upstream the heat exchanger for filtering fluff from the process air passing the fluff filter, a condensate pump in liquid connection to the condensate collector and being adapted to convey the condensate, a condensate directing means receiving the condensate pumped by the condensate pump and for selectively directing the condensate flow under the control of the control unit a) to a conduit guiding the condensate flow towards the fluff filter for washing at least a portion of the filter surface by removing fluff, or b) to a condensate sink; a) to a conduit guiding the condensate flow towards the fluff filter for washing at least a portion of the filter surface by removing fluff, or b) to a condensate sink; characterized by a washing liquid collector assigned to the fluff filter and being adapted to collect washing liquid from the fluff filter, wherein the fluff filter and the washing liquid collector are arranged such that the washing liquid flows along at least a portion of the surface of the fluff filter and carries fluff washed off from the surface into the washing liquid collector which is adapted to collect the washing liquid contaminated with fluff, wherein the washing liquid collector is separate from the condensate collector, wherein the condensate collector exclusively collects condensate from the heat exchanger and receives no or essentially no washing liquid from filter washing, and wherein the fluff filter is positioned within a process air channel section which is located in one or more of: a bottom region within the apparatus cabinet, and the basement of the apparatus. a bottom region within the apparatus cabinet, and the basement of the apparatus.