Low pressure throughout the house, weak hot-water pressure only, or a single shower with poor flow — each has a different cause and a different fix. Here's how to tell them apart.
Includes full coverage of water pressure systems, PRVs, and supply diagnostics — the complete reference from our licensed plumbing team.
The key diagnostic question is: is low pressure affecting the whole house, only the hot side, or just one fixture? That single observation narrows the cause dramatically.