With the DOYMAfix® HP/O, DOYMA GmbH & Co has launched the first professional above-ground inlet for air-to-water heat pumps (monobloc) and at the same time expanded its still young product range with additional products - connection sets for the underground connection of heat pumps. When you get right down to it, we have the right inlet in our range for every type of heat pump, every type of sealing and every structural condition. Curious to find out more? Then check out our range here now!