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Old 10-07-2013, 08:33 AM   #1
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Shower Water Temperature

Not sure if this is a one of a kind issue with our unit or if it's a general one with most RV showers with a hose attached to the hot and cold taps and an on off valve built into the hand held shower head?

Once the hot and cold water taps are set to deliver a nice warm temperature it stays at that temperature. I get wet, turn the water off by the valve on the hand held shower and soap up. After soaping up I turn the shower head back on for the rinse and the first 3 or 4 seconds of water are scalding hot. Anyone else have such an issue, if so, have you found a fix that would deliver the same water temperature when using the hand held valve?

thanks

Yes i know I can let it run for 5 seconds and it will be back to normal temperature, I'm trying to conserve water as most of my camping sites do not have water at the site.


Moderator, can you please move this post to the "General RV Chat" portion. thanks
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Old 10-07-2013, 09:54 AM   #2
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Do you have a tankless hot water heater? If so, this is very common. There are some solutions for this problem if that is it.
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Old 10-07-2013, 11:04 AM   #3
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I have experienced this same issue in a different camper. The trick I have found that seems to work with my shower is this: Turn the cold water valve on full open and let it flow to the shower head. Then slowly open the hot valve untill you get the temp like you want it. Give that a try...I suspect the expanding hot water pushes back into the cold side with the shower head shut, so by only opening the hot only slightly it should eliminate the issue.
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Old 10-07-2013, 01:08 PM   #4
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This happens to our shower as well. I believe it's the washer expanding as the hotter water flows past. I see this in the sink as well. Turn on the hot side and the flow will gradually diminish as the water gets hotter. So in the shower you get the temp just right (the washer has expanded and is stable), shut the flow off with the shower head valve and do the soapy thing. The water begins to cool a bit which causes the washer to shrink which causes the burst of HOT water when you open the valve again. After a few seconds of the HOT water flowing past the washer it expands and the water temp returns to your setting. JMHO of course.
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Old 10-09-2013, 08:13 PM   #5
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Thanks for the responses.

msturtz, No I do not have a tankless heater. Some good explanations as to why this happens, guess I'll just to have to work with what I have when getting cleaned up.

Cheers and have a great day.
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Old 10-09-2013, 08:19 PM   #6
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Since you do not have a tankless water heater then you can add a small accumulator in the system to give the water someplace to go. They are very inexpensive and will also help your pump life.
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Old 10-10-2013, 03:02 PM   #7
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Interesting thread. Ours does just the opposite. It turns cold.
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Old 10-10-2013, 03:58 PM   #8
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Our shower turns hot too when the flow is restored after washing. Generally takes a couple seconds to balance back. Can't expain why, we have just learned to live with. Friends with non-jayco TT experience the same thing.
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Old 10-15-2013, 12:53 PM   #9
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I dont have a tankless heater and mine does the exact same thing. The Forest River we had before the Jayco did not do this..
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Old 10-15-2013, 01:09 PM   #10
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Quote:
Originally Posted by msturtz View Post
Since you do not have a tankless water heater then you can add a small accumulator in the system to give the water someplace to go. They are very inexpensive and will also help your pump life.
Yep, this is a good answer to your problem.
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