Maytag & Hotpoint offered what we called water dryers that used between 1/3 and 1/2 gallon of cold water per minute to dry a load of clothes. They managed to dry a load of cottons in 45 to 60 minutes and, like other condenser dryers produced very soft clothes that felt like they had been given a strong dose of fabric softener even when they had not. For a while, Maytag made two models, one to match the top of the line washer and one that went with the plainer Highlander models. Hotpoint's condenser dryer matched the TOL washer and had an almost identical twin that was an air flow dryer.
More than 20 years ago, we found a 27 inch Avocado green Space Mates dryer from the 70s, I think, that was a water condensing machine. It could not have been the only one Westinghouse made so Westinghouse must have made a few. Unlike the Hotpoint & Maytag, it did not use a pump to dispose of the used water but, instead, relied on its position atop the washing machine to let gravity carry the water down through a hose to the same standpipe the washer used. Given the way wet lint can clog things, it does seem like at least a small flood hazard.
