Earlier quoted context omitted.
I had to run a new electrical outlet for mine; plumbing a new line for it wouldn’t have been any more difficult.
This is the one issue that's stopped me. Most these attachments connect to the toilet's water supply, which is fine, except most toilet water supplies only provide cold (i.e. whatever the ambient water temperature happens to be) water which to me, is far from ideal in a bidet (it's fine for normal use though). Running hot water there is a significant undertaking if done correctly, so most options come with a small re…
Well, if you have a reservoir before the bidet, it'll get from ambient water temperature to ambient air temperature if it sits long enough. How many litres does a bidet use at a time? Nowhere to slot a 2L reservoir?
Getting the water to 22C should be far more tolerable than the 5-8C many of us are used to in winter.