closeup of dirty big fane for heat termal pump. color palette

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#17322D #285259 #546562 #2D4744 #958979

related tags: 17322D 1E2B29 2D4744 34413F 34494D 59615F 8E8880 air chiller classic cold condenser cooler cooling dirty dust ecology energy engineering exchanger fittings heat heating modern nobody outdoors pipes plan plate plumber plumbing power project pump system technology water 285259 546562 958979