The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

krw wrote:

The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?


Does sound like a Hot\Cold transfer. The 1220/1225 is not
a scald-guard type so it's not that kind of problem.
It's remotely possible that the cartridge is not sealing
properly in the bore, but I doubt it.

Have you overlooked some faucet/device which could be
backfeeding Cold to Hot? A single handle bath faucet
nearby? Another shower/tub faucet? Even a washing machine
solenoid valve?

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

hello Keith,

I would try seeing what hot water flow rate you get at the shower.

Put a small bucket under the shower and run only the hot water for a
timed minute .

That will show you if there is some constriction problem.

Do the same for the cold water to compare.

If you get very hot water from another faucet its not a heater problem.

In article ,
says...
krw wrote:

The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?


Does sound like a Hot\Cold transfer. The 1220/1225 is not
a scald-guard type so it's not that kind of problem.
It's remotely possible that the cartridge is not sealing
properly in the bore, but I doubt it.

This would mean the entire assembly would have to be replaced? Oh
my aching drywall. :-( I already had to tear out the ceiling
below because of a leak (turned out to be the drain and caulk).

Have you overlooked some faucet/device which could be
backfeeding Cold to Hot? A single handle bath faucet
nearby? Another shower/tub faucet? Even a washing machine
solenoid valve?

I put ball valves to cut off each room/device last year. I shut
them all off and took a shower. ;-) No change. :-(

--
Keith

In article .com,
says...

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

hello Keith,

I would try seeing what hot water flow rate you get at the shower.

Put a small bucket under the shower and run only the hot water for a
timed minute .

That will show you if there is some constriction problem.

I'll do that, though there doesn't seem to be a problem with the
sink in that bath (I'll try that too just to make sure).

It can't be a constriction after the mixing valve (would be the
same as a "saver" shower head) or before the split to the sink
(assuming the hot isn't a problem there). There is only about a
two foot long piece of 1/2" copper inbetween (the connection is
directly under the head-end of the tub).

Do the same for the cold water to compare.

If you get very hot water from another faucet its not a heater problem.

--
Keith

"krw" wrote in message
t...
In article .com,
says...

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

hello Keith,

I would try seeing what hot water flow rate you get at the shower.

Put a small bucket under the shower and run only the hot water for a
timed minute .

That will show you if there is some constriction problem.

I'll do that, though there doesn't seem to be a problem with the
sink in that bath (I'll try that too just to make sure).


Isn't this fun, owning a house? This is much better than relaxing on the
sofa with a good book, playing golf or fishing, ya know? :-)

In article .com,
says...

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

hello Keith,

I would try seeing what hot water flow rate you get at the shower.

Put a small bucket under the shower and run only the hot water for a
timed minute .

That will show you if there is some constriction problem.

3.8GPM to the spigot (the shower head is more work)

Do the same for the cold water to compare.

4.3GPM

If you get very hot water from another faucet its not a heater problem.

Hot enough for SWMBO. When the ground gets cold the bath in
question may not even be enough for me.

The bath in question is a long way from the boiler (30-40') of
3/4" copper. I insulated the heat and hot water pipes, where I
could get at them but it was fine before. I would suspect the
distance but that hasn't changed either.

--
Keith

In article ,
says...
"krw" wrote in message
t...
In article .com,
says...

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

hello Keith,

I would try seeing what hot water flow rate you get at the shower.

Put a small bucket under the shower and run only the hot water for a
timed minute .

That will show you if there is some constriction problem.

I'll do that, though there doesn't seem to be a problem with the
sink in that bath (I'll try that too just to make sure).


Isn't this fun, owning a house?

You don't even want to know! This house was built by a complete
moron. I just took the red carpeting out of the bath in question
and put down tile.

Actually, I'm getting ready to sell the house so I've got it *all*
torn up fixing things that I should have years ago. It seemed that
happened with my last house too (got everything all nice and pretty
for the next owners).


This is much better than relaxing on the
sofa with a good book, playing golf or fishing, ya know? :-)

Yep. Not much of that stuff in my immediate future but once I sell
the joint...). ;-) Got the outside stained and now the only thing
I need to do outside is some repairs to the deck before the snow is
3' deep over it. Let see... Paint, carpet, cabinet repairs. Hmm,
where is that honey-do list...

--
Keith

"krw" wrote in message
t...

Isn't this fun, owning a house?

You don't even want to know! This house was built by a complete
moron. I just took the red carpeting out of the bath in question
and put down tile.

Only complete fools put carpet in a bathroom. Really.

"JoeSpareBedroom" wrote in message
...
"krw" wrote in message
t...
In article .com,
says...

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

hello Keith,

I would try seeing what hot water flow rate you get at the shower.

Put a small bucket under the shower and run only the hot water for a
timed minute .

That will show you if there is some constriction problem.

I'll do that, though there doesn't seem to be a problem with the
sink in that bath (I'll try that too just to make sure).


Isn't this fun, owning a house? This is much better than relaxing on the
sofa with a good book, playing golf or fishing, ya know? :-)
AMEN TO THAT!

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

Is there a possibility that some sort of water filter (strainer screen)
may be partly clogged on the hot water side?

--
Joseph Meehan

Dia 's Muire duit

In article ,
says...
"krw" wrote in message
t...

Isn't this fun, owning a house?

You don't even want to know! This house was built by a complete
moron. I just took the red carpeting out of the bath in question
and put down tile.

Only complete fools put carpet in a bathroom. Really.

It was a master bathroom so supposedly no kids, but you're getting
the picture.

--
Keith

In article ,
zz says...
In article .com,
says...

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

--
Keith

hello Keith,

I would try seeing what hot water flow rate you get at the shower.

Put a small bucket under the shower and run only the hot water for a
timed minute .

That will show you if there is some constriction problem.

3.8GPM to the spigot (the shower head is more work)

Do the same for the cold water to compare.

4.3GPM

To followup: I measured the downstairs bath (working fine) and I
get 3.5GPM (hot) and 5.0GPM (cold). These number seem rather
reasonable to me.

--
Keith

In article ,
says...
krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

Is there a possibility that some sort of water filter (strainer screen)
may be partly clogged on the hot water side?

There is a possibility of anything. Where?

--
Keith

Unless I've misread, you say the faucet worked, but now performance has
degraded. That would seem to indicate that recently something has been
misadjusted, clogged, or broken.

I think you said you recently put in ball valves. My suggestion would
be that you go through the entire system and insure the valves are in
the proper position, whether it be open or closed. If there is another
faucet on this supply line, for example, having a valve that should be
closed open can allow bleeding of cold into the downstream hot, giving
downstream tepid water. I suggest doing this first, as it is simplest.

If that doesn't work, I would close the ball valves leading the the tub
(both hot and cold), remove the faucet valve assembly, then turn on the
hot using the ball valve. That can be messy, so be prepared. If you
get a full stream of hot, then you know the problem is somewhere in the
faucet; check for a blocked filter or an error in your installation of
the replacement. Good luck.

krw wrote:
The shower in my master bathroom is no longer staying hot. It's
hot enough for me if the knob is all the way over to the hot side,
but not hot enough for my wife. I used to set the handle to more
or less the center, so something has changed. The downstairs
shower and all the rest of the faucets are fine so I don't think
it's the boiler (domestic coil).

I've replaced the cartridge in the Moen mixing/diverter valve (the
Moen site said either a 1220 or 1225 - I used a 1225) but the
problem remains. I've been told that a hot-cold transfer is
possible at any faucet so I've tried shutting off the supply to
them; nope. I would have thought this would affect all faucets
anyway. Any ideas?

In article , says...
Unless I've misread, you say the faucet worked, but now performance has
degraded. That would seem to indicate that recently something has been
misadjusted, clogged, or broken.

Yes, something's changed. But what? There isn't much in line that
wouldn't also affect the other bathroom.

I think you said you recently put in ball valves. My suggestion would
be that you go through the entire system and insure the valves are in
the proper position, whether it be open or closed. If there is another
faucet on this supply line, for example, having a valve that should be
closed open can allow bleeding of cold into the downstream hot, giving
downstream tepid water. I suggest doing this first, as it is simplest.

Yes, I mentioned this. I shut everything else off and no joy.
This line is the only one I haven't yet added ball valves to.

If that doesn't work, I would close the ball valves leading the the tub
(both hot and cold), remove the faucet valve assembly, then turn on the
hot using the ball valve. That can be messy, so be prepared. If you
get a full stream of hot, then you know the problem is somewhere in the
faucet; check for a blocked filter or an error in your installation of
the replacement. Good luck.

That's not easy to do since I'd have to add the ball valves to this
line. I have them, but haven't installed them yet. This is a good
idea though. If everything is shut off except that hot then there
is no chance of intermixing and then the flow rate would tell me
something, even without pulling the cartridge.

Perhaps a call to Moen might be in order...

Thanks all!

--
Keith