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Old 08-29-2015, 09:50 AM   #1
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Default Moen Posi Temp Shower Valve dilimma

I have a wonderful family (Mom and Dad and 4 kids) renting a single family home with a BW 50 Gallon Water Heater that has an older model Moen Posi-Temp Shower valve installed. Even with the water shortage, they like to take longer showers than the water heater can supply. I suspect that they have the water heater turned up to more than 140 degrees but will verify that when I go there today. I recently installed the valve and told them to call me if it is too hot or not hot enough. Yesterday she sends me a text that the water is too hot or too cold and not much adjustment for a satisfactory temperature. I am going by with my temperature gauge to show her husband how to adjust the valve to get it just right for this family. I now understand why some landlords charge more for a large family as they are going to wear out the water heater and other things quicker and cost more to repair than a couple or single person. My goal is to get them to use lless water but given the age of the kids, it might be wishful thinking. Any suggestions on a solution for this family and the property owner? They really are a great family and I want to do right by them and the owner. TIA
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Old 08-29-2015, 11:44 AM   #2
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It's a good call on the plumber's part to show the customer how to adjust the setting for temperature on the W/H rather than actually doing it.

I leave them at the factory setting of 120 F. I will show someone how to raise or lower the temperature setting, but I won't do it for them.
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Old 08-29-2015, 02:47 PM   #3
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You must be familiar with that law suit a few years back. Lots of liability out there.
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Old 08-29-2015, 02:53 PM   #4
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When I do an inspection on a water heater I always check the temp, here legal for residential is 120-130. I not it on my pass sticker on water heater and plumber and I initial it.
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Old 08-30-2015, 01:43 PM   #5
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...has an older model Moen Posi-Temp Shower valve installed...Yesterday she sends me a text that the water is too hot or too cold and not much adjustment for a satisfactory temperature.

I would be looking at that Posi-Temp cartridge. Set limiters for full range see what you get.
Suspect the balancing feature is sticking.
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Old 08-30-2015, 03:03 PM   #6
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Quote:
Originally Posted by Wolfe Seacoast View Post
...has an older model Moen Posi-Temp Shower valve installed...Yesterday she sends me a text that the water is too hot or too cold and not much adjustment for a satisfactory temperature.

I would be looking at that Posi-Temp cartridge. Set limiters for full range see what you get.
Suspect the balancing feature is sticking.
Setting the temperature limit too high where scalding temperature water may be encountered is a liability risk for the plumber as well, which should be avoided.

Yes... The balancing spool should be checked for proper operation but as stated the problem is probably more likely to be insufficient supply. If the tank is operated at an elevated temperature a device such as "Cash Acme's Tank Booster" should be installed to prevent scalding.



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Old 08-30-2015, 03:49 PM   #7
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Pop in a new cartridge and be done with it for a few years. The balancing spool inside those cartridges are notorious for sticking if not used for a period of time.
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Old 08-31-2015, 01:21 AM   #8
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I believe I spoke with someone at Moen a year ago or so and he told me to soak the cartridge in vinegar and water, 50% of each and let is soak for 6 hours or so and rinse it off then lube it up and install it. It is supposed to allow the balancing mechanism to function properly... Has anyone tried this?
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Old 08-31-2015, 04:57 AM   #9
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Quote:
Originally Posted by srloren View Post
I believe I spoke with someone at Moen a year ago or so and he told me to soak the cartridge in vinegar and water, 50% of each and let is soak for 6 hours or so and rinse it off then lube it up and install it. It is supposed to allow the balancing mechanism to function properly... Has anyone tried this?
I doubt it...
Considering that a new cartridge is about $40...
And the gaskets on the cartridge usually get ripped up pulling it...

Also how would you bill that, and what customer wants their water off for 6 hours?

I've never done it and never will...



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Old 08-31-2015, 11:32 AM   #10
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I would charge more for the cleaning than installing a new one. You will also save yourself a call back.
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