Document the change
Note whether pressure changed suddenly, whether the issue follows recent work and whether any wet area appeared at the same time. Compare observations at the same scheduled time rather than different operating conditions.
Questions for the assessment
Ask whether supply conditions, valve operation, leaks and the zone layout will be considered. A head change alone can be a poor fit if the underlying water supply or pipe problem remains.
Repair versus redesign
A newly weak zone may need a focused repair. A zone that never covered properly could need layout changes. Request separate explanations and prices for restoring the existing system versus changing its design.
Useful question
What measured findings support the proposed work, and what coverage should I expect afterward?