Note when it begins
Say whether the change starts immediately, after the shower has run for a while or only on one setting.
Shower-temperature symptom
The shower goes hot and cold during use.
Describe the sequence at the shower: when the change begins, what the control is doing and whether another outlet was used. You do not need to identify an internal part.
Record the sequence
What changes before the temperature shifts?
Stop using the shower if the temperature becomes unsafe or unpredictable.
Keep the control position clear
Record whether the control remained still or needed repeated adjustment as the temperature changed.
Mention nearby water use
Note whether a tap, toilet or appliance used water at the same time, without treating that as proof of a cause.
Shower details
Describe what you notice at the shower.
See Shower Repair to share details about the shower controls, flow and timing.
Useful temperature details
- Shower type if known
- When the change begins
- Control position and adjustments
- Whether flow changes too
- Any nearby water use at the same time
Ready to get in touch?
Send the temperature sequence, not a guessed cause.
Describe timing, control position, flow and nearby water use, and stop using the shower if the temperature is unsafe.
A clear message helps a plumbing professional understand the next step.