Hot Water Everywhere but Master tub

[Speedy358]

Hi there, I’m new to this forum so I do apologize if I’m posting incorrectly however I have an issue that I’ve been dealing with for some time now.

The hot water in my master tub decided to stop working. Even though hot water runs perfectly fine throughout the entire house. This is the only place that I can’t figure out what’s going on. My house is fairly new as it was built in 2017. Any thoughts or ideas on what could be causing this? The water pressure is fine, but like I said, but it’s just cold coming out.

 

[Geofd]

You could follow that pipe back to were it tees off and see if there's a valve off, if there's a panel that comes off exposing the hot and cold lines check for closed valves there simple stuff 1st

 

[Twowaxhack]

Hi there, I’m new to this forum so I do apologize if I’m posting incorrectly however I have an issue that I’ve been dealing with for some time now.

The hot water in my master tub decided to stop working. Even though hot water runs perfectly fine throughout the entire house. This is the only place that I can’t figure out what’s going on. My house is fairly new as it was built in 2017. Any thoughts or ideas on what could be causing this? The water pressure is fine, but like I said, but it’s just cold coming out.


View attachment 47309

Look for a mixing valve under the master lavatory……

 

[BlueSkyHigh]

Just to be clear, is there zero water flowing into the tub when you turn on the hot water or is there water flowing but it's simply cold?

 

[Speedy358]

You could follow that pipe back to were it tees off and see if there's a valve off, if there's a panel that comes off exposing the hot and cold lines check for closed valves there simple stuff 1st

All of the lines are behind the walls so I wouldn’t have a clue to start.

 

[Speedy358]

Just to be clear, is there zero water flowing into the tub when you turn on the hot water or is there water flowing but it's simply cold?

The water is flowing but it’s cold

 

[Rickyman]

Like Twowaxhack said, look for one of these mixing valves under a bathroom sink

 

[Geofd]

That's were to start....

 

[Rossando]

Could be a cross over connection in the nearby shower as well. But it requires to shut off water at certain fixtures to test this out. Get a plumber who's okay with water variances and troubleshooting this issue.

 

[Speedy358]

Like Twowaxhack said, look for one of these mixing valves under a bathroom sink
View attachment 47324

Just checked. Nothing.

 

[Geofd]

Is there a panel you can remove on the tub to access mechanicals???????

 

[Speedy358]

Is there a panel you can remove on the tub to access mechanicals???????

Nope. It’s just a basic tub with no jets or anything fancy.

 

[Speedy358]

Let me say this, sometime about a year ago, I increased the water temperature on my hot water heater and I feel like that was about the same time the hot water stopped working in this tub.

 

[Twowaxhack]

Look for a valve like Rickyman posted in post #7.

 

[Speedy358]

Like Twowaxhack said, look for one of these mixing valves under a bathroom sink
View attachment 47324

Is this it?

 

[BlueSkyHigh]

Looks like it. Is that on top of your water heater? That wasn’t what you used to turn up the temp on your water a year ago was it?

 

[Speedy358]

Looks like it. Is that on top of your water heater? That wasn’t what you used to turn up the temp on your water a year ago was it?

Yes, it’s on top of the water heater. I’ve never touched that before. When I turned up the water heater temperature, it was on the thermostat at the bottom of the water heater. Also, where that valve is sitting on the other side of the wall is where my master bathroom tub is where the problem is.

 

[BlueSkyHigh]

I’m not savvy on how to adjust those mixing valves but it couldn’t hurt to give it a twist marking where to return it to if it doesn’t help.

 

[Rickyman]

Is this it?

View attachment 47340

Yep, replace it and enjoy a hot bath

 

[BlueSkyHigh]

Yep, replace it and enjoy a hot bath

Is it really needed at all?