Another thing that I had to do before going on the trip was to descale the tankless water heater.
The task was simple enough---running a vinegar solution through the pipes--but it did involve buying a couple of gallons of vinegar, taking the pump out of storage, and remembering which valves to turn off and which to turn on.
The latter was the most difficult step, as the pump strained furiously without result until I opened a drain and the vinegar circulated through the heater and back into the bucket.
Even after watching YouTube videos (that don't match the situation exactly), it's not easy working out how to do something after three years.
After letting the pump run for an hour, I disconnected the hoses, rinsed off everything, and made sure the hot water was coming through various faucets--yes, the flow was stronger.
Maybe I'll do this again next year, like I was supposed to. Doing things with pumps, hoses, and wrenches--dare I say it in this day and age--makes this CIS male feel better.
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