Upvote:9
I can't prove a negative, but I got diving certified in a very cold country where ice diving with dry suits is common, and I've never heard of recreational hot water suit diving.
Unlike regular wetsuits and drysuits, a hot water suit requires an umbilical cord connected to a support ship capable of dependably supplying the hot water. This makes the ship itself a part of the diver's life-critical support system, and places diving with one squarely in the realm of commercial diving. Buoyancy control, movement etc are also considerably complicated by litres of water sloshing around inside your suit plus the risk of getting tangled up in the umbilical. All in all, it's very much an advanced diving technique and not something you can or should attempt without extensive training.