In article ,
daniel hudson hudson[dot]daniel4[at]gmail[dot]com wrote:

Hey there.
So we have an old home (1902) that is 3 stories.
We currently have a tenant in our ground floor apartment. She just
informed me that she is unable to get the hot water to come out of the
bathroom sink tap.
She could let it run and run and it will not get hot at the sink tap.
Her kitchen sink tap works fine.
Our kitchen sink tap works fine.
Our 3rd floor bathroom sink gets hot pretty quickly but
our 2nd floor bathroom sink tap has the same problem that out tenant
does...
Our 2nd floor bathroom sink hot water has NEVER gotten hot (unless I take
a shower in there beforehand) and we've just learned to live with it, since
our primary bathroom is on the 3rd floor...
Anyway, this is a new problem ( we think) for our ground floor bathroom
sink as our previous two tenants never mentioned it.

We have a tank (blech) water heater 80 gal on the ground level of the
house, so her bathroom is actually the closest to the source of hot water.


We can't figure this out.

Any ideas oh plumbing gifted folks out there? Thanks!

--
daniel hudson

The newly remodeled place the g.f. and I bought had no hot water in one
of the bathroom sinks. Turned out to be reversed supply lines under the
sink. An easy diagnosis and fix. Has the faucet been replaced recently,
by you or a previous tenant (with or without your knowledge?)

Someone speculated clogged pipes, but if that were the case you'd be
getting a significantly reduced flow rate.

The 2nd floor bathroom delay is a different issue, lag time in the
absence of a recirculating pump.

I once worked graveyard at a hotel, and every morning the first person
awake in one wing would call and complain that there was no hot water.
I'd say let it run. They'd say they let it run already for ten minutes.
I'd say then give it twenty. The manager was too cheap to replace the
recirculator to that wing.