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Re:Dual-flush toilets 'wasting more water than they save' by dreamcompiler on Tuesday September 29, 2020 @06:26PM (#24633778)
> They just need to use reverse-cycle airconditioners to efficiently heat the air and dehumidify it instead of simply using a resistive heater. These are much more complex to make and are expensive.

I've seen these in apartments in Europe; I presume this is because it's a PITA to route a dryer exhaust vent to the outside in a 400-year-old building with 2-foot thick stone walls. Such dryers work well; you just have to dump the accumulated water out of them every so often. But I've never seen one for sale in the US.

Re:Dual-flush toilets 'wasting more water than they save' by 72deluxe on Tuesday September 29, 2020 @06:32PM (#24633828)
Even more impressive are the combination washing machine and drier machines that dry and then drain the accumulated water via the washing machine plumbing without you having to ever empty it.

At least that's what I think my Hotpoint does.... it does get mighty hot and release a rubbery sort of smell when it's drying; my wife can't smell it but to me it stinks.

Clever equipment though.

Re:Dual-flush toilets 'wasting more water than they save' by lathiat on Tuesday September 29, 2020 @08:07PM (#24634513)
There are "Condenser" dryers that pump the water into a drain hose or water tub (that you need to empty) instead of into the air - that are still otherwise resistive.

Then there are "Heat Pump" dryers that operate with a compressor the same as a reverse-cycle air conditioner. "Heat Pump" dryers are always "Condenser" dryers.

Re:Dual-flush toilets 'wasting more water than they save' by sxates on Tuesday September 29, 2020 @07:34PM (#24634306)
I have a set in my California home made by Miele. I think they're becoming more common. Bosch also makes them, but I found the Miele's to be more efficient - so much so that they run on a standard 110v outlet instead of 220. Highly recommended.
Re:Dual-flush toilets 'wasting more water than they save' by joezydeco on Tuesday September 29, 2020 @06:45PM (#24633959)
Search on “condensing” or “ventless” dryers.

https://www.abt.com/product/140010/Bosch-24-800-Series-White...