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The water temp when on 115 degrees fluctuates widely when…

Customer Question
The water temp when...

The water temp when on 115 degrees fluctuates widely when taking a shower, from getting hotter to rapidly cooling off. I'm guessing a 20 degree swing? Any way to resolve or identify the problem?

Contractor's Assistant: How long has this been going on? And how severe is the problem?

Started probably a month ago. Only happens when using the shower; stays consistent when washing dishes.

Contractor's Assistant: Do you plan on doing the work yourself?

If possible. I can call the plumber that did the install...

Contractor's Assistant: Anything else we should know to help you best?

Don't believe so. Really like the unit; had it for over 3 years now.

Submitted: 7 months ago.Category: Plumbing
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Answered in 3 minutes by:
12/21/2017
Plumber: Phil, Mechanical Engineer. replied 7 months ago
Phil
Phil, Mechanical Engineer.
Category: Plumbing
Satisfied Customers: 9,707
Experience: Retired mech. contractor, shop owner, 51 yrs experience.
Verified

Hello, if you have a tankless water heater the cause is low hot water flow, so the flow switch inside the water heater turns the burners off and on, causing the problem.

IF you have a tank type water heater, the problem is caused by a faulty shower temperature control valve, or a bad mixing valve if you have one out by the water heater.

Let me know the brand and model number of the water heater please.

.

My goal is to give you the best experience possible! I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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Category: Plumbing
Satisfied Customers: 9,707
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Experience: Retired mech. contractor, shop owner, 51 yrs experience.

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