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A comment on Hitachi launches CO2 heat pump water heaters with solar-friendly tariff controls. Parent comment

Re:Hitachi launches CO2 heat pump water heaters with solar-f... by dathinab on Thursday September 10, 2026 @01:14PM (#49647138)
in Japan you tend to shower & wash yourself clean _before_ getting into any bath. In the west people don't do it or do it very half asset. And tbh. a lot of places have combined bath/shower so you kinda can't even do it Japanese style nicely.

That alone probably will make a huge difference in how often you have to deep clean it.

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Re:Hitachi launches CO2 heat pump water heaters with solar-f... by masklinn on Thursday September 10, 2026 @02:01PM (#49647857)
> you kinda can't even do it Japanese style nicely.

I mean you can as long as you make the bathroom a wet room and shower outside the tub, which is exactly how the Japanese do it.

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Re:Hitachi launches CO2 heat pump water heaters with solar-f... by bigstrat2003 on Friday September 11, 2026 @12:49AM (#49653679)
Yes. But then those wouldn't be the places which GP was talking about, where the shower head is set up so you stand in the bath tub to take a shower.
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Re:Hitachi launches CO2 heat pump water heaters with solar-f... by masklinn on Friday September 11, 2026 @06:49AM (#49656238)
I’ve used a bunch where the shower head is on a hose not fixed to the wall. Usually with a two-way faucet.

The biggest issue in the west is the room being wet to start with.

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Re:Hitachi launches CO2 heat pump water heaters with solar-f... by dathinab on Friday September 11, 2026 @06:08PM (#49666081)
my point is most _rented apartments_ are not setup like that and do not provide a reasonable path to have it

most owned apartments also are not build in a way where it's easy to retrofit. So if you don't do a "in depth" renovation anyway, its often just not a good option from a financial POV. Especially if you have to reroute plumbing (for the floor level wet room sink), especially if beton floor or pre-existing floor heating is involved.

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