In the WRP unit series, the advantages of the recuperator technology (WRC series) and the heat pump technology (WPC series) have been united into one unit. Multi-stage heat recovery, continuous power adjustment and an intelligent control concept ensure a maximum of energy-efficiency and convenience. Naturally, the WRP is also available in a low temperature version and with an additional pool water condenser. 13 construction sizes cover the entire spectrum from the small private pool right up to the large public indoor swimming pool hall. Up to size 2, the devices are designed as compact units (WRP-K).