OLD US WATER CONDENSING DRYERS
The HPs used 1/2 GPM and the MTs used 1/3 GPM, while this seems like a lot of water [ and it is at 20-30 Gallons Per Hour ] keep in mind that these were powerful dryers and will easily dry 2 to three times faster than a new european water or air condensing dryers. To a large degree you get back what you put into something in terms of energy and water use in performance.