If I'm thinking of the same device, the one I used in Sweden and Norway, it's fantastic. It's in the shower itself, so you don't have to contend with 30m of cold pipes between a less effective water heater and the nozzle.
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If I'm thinking of the same device, the one I used in Sweden and Norway, it's fantastic. It's in the shower itself, so you don't have to contend with 30m of cold pipes between a less effective water heater and the nozzle.