Flow is weak or changes
Record whether the change affects one setting, begins immediately or develops while the shower runs.
Tell us what happens at the shower controls, head, hose, tray or visible connections. Describe temperature changes as a symptom; you do not need to identify an internal part.

Record whether the change affects one setting, begins immediately or develops while the shower runs.
Identify the head, hose, control or visible connection and whether water appears when the shower is off.
Describe the hot-and-cold pattern, control position and whether another water outlet was used at the time.
The hot-and-cold shower guide can help you note timing and nearby water use before you get in touch.
Include the control position, flow, temperature pattern and any visible dripping or water escape.
A clear message helps a plumbing professional understand the next step.