Why does one shower not get as hot as the other?

What’s most likely happening is a problem with the shower’s mixing valve. The mixing valve is a control valve that creates the balance in the flow of water from the hot water line and the cold water line and blends the two together for your desired shower temperature.

Why does my shower go hot when I turn another tap on?





The issue may lie in the shower itself if you are getting hot water to every fixture except for your showerhead. You will need to check the shower valve or fix a worn-out washer or O-ring. The cartridge could be broken, and these valves will need to be replaced. The problem could also be further down in the line.

How do you adjust a shower mixing valve?

Quote from the video:
So just unscrew that a little bit shake it should slide right out there.

How do I test my shower mixing valve?

Quote from the video:
So now we need to excavate the handle and the faceplate. So behind this index is a screw.

Where is the mixing valve located?

You can see the trim on the shower faucet, but the actual valve is behind the wall and is permanently connected to the plumbing. To replace it, you need an access panel through the shower wall, and if it isn’t designed into your bathroom, you’ll have to cut one.

Where is the anti scald valve located?





An anti-scald pressure balancing valve is a special device that’s built into the shower handle that regulates the water pressure from the hot and cold water lines to prevent sudden, extreme changes in temperature.

How do you fix a fluctuating shower temperature?

Shower Water Temperature Keeps Changing

  1. Check Your Pressure-Balancing Valve.
  2. Check Your Water Heater.
  3. Replace the Shower Cartridge.
  4. Descale the Water Heater and Check for Blockages.
  5. Why Your Water Temperature Keeps Fluctuating.
  6. Conclusion.


How do I fix the temperature control on my shower?

Quote from the video:
If the shower is too cold rotate the temperature control knob one-quarter turn anti-clockwise. And wait for a few seconds for the temperature to stabilize.

Why does my shower go cold when I turn another tap on with combi boiler?



The most common reason for this often occurring issue is a blockage in the hot water heat exchanger located inside the boiler. Most probably because of sludge buildup in the heating system. Unfortunately, sludge buildup is common, especially in installations where the fitter didn’t flush the heating system properly.

How do you know if your shower mixing valve is bad?

Sometimes, the first sign of a TMV problem is a change in the way your water comes out of a tap. Typically, you see a reduction in flow or pressure here. For example, your water might start to run sluggishly and slowly all the time. You might struggle to get the tap to give out more than a trickle of water.

How do you know if your shower mixer valve is bad?

Signs You Could Have a Faulty Shower Valve

  1. Trouble Turning the Handle. Do you have difficulty turning on your shower? …
  2. Unexpected Temperature Changes. …
  3. Loss of Water Pressure. …
  4. Shower Head Leaks.



Why is my shower only lukewarm?

Sediment Is Affecting the Heating Element



The resulting sediment can reduce the lower heating element’s effectiveness, causing only lukewarm to flow from your hot water tap. To fix this problem, make sure your hot water tank is flushed annually to remove any minerals.

Why is my hot water sometimes not hot?

Sediment build up in the tank



Over time, sediment can build up in the bottom of the tank, where the burner usually is. This can lead to slower heating or poor efficiency in your water heater, meaning lukewarm water rather than hot water. The solution for this is to drain the tank and to use a water softener.

Why is my hot water not hot?

If there is no hot water or the supply is not adequate or is too hot, check the upper thermostat. If the thermostat is busted, it should be replaced. Lack of regular maintenance can cause issues even though the thermostat is working because of sediment buildup. To fix this, flush your water heater.

How do I increase the hot water temperature in my shower?



Adjust the Shower Valve

  1. Remove the handle. You may need a screwdriver to do this.
  2. Take off the metal cover beneath the handle, exposing the valve stem. …
  3. Turn the RSL two notches in whichever direction desired, then put the RSL back in place.
  4. Replace the faucet handle, then test the mixture of hot and cold water.


How do you adjust an anti scald valve?

Quote from the video:
The do the set screw back up. And Oh make sure you turn off the water before you start as well it gives us a full range of motion on the Delta Faucet.

How do you adjust a hot water temperature control valve?

To adjust the temperature supply remove the plastic cap on top of the valve and adjust with a close fitting spanner. To increase the temperature turn anti-clockwise To decrease the temperature turn clockwise To set the valve to a maximum recommended mixed water temperature, see table below.

How do you turn the heat up on a Delta shower faucet?



Quote from the video:
Device which almost all shower valves have which means that if you turn it on completely. Hot you're not going to get the 120 or 140 or 60 degrees your water heater is set on it will.