Many have said: “I have low water pressure”. Yet after further conversation most reveal that only one point is affected, usually a sink or a shower. Most cases prove to be a plugged shower-head, aerator or water restrictor. Some pressure problems are plumbing related, too long a run with too small a pipe. Sometimes the ports in valves or shower diverters are too small. If you’re problem lies with the whole home or just the upper level, it is necessary to raise the system pressure. Please don’t just start adjusting the pressure switch, there’s more to it than that. If you have great pressure in the shower but the pressure drops to nothing when others start using water, then the problem lies with small pipes or an undersized pump. Whatever your ailment it’s best to find and fix the problem rather than treat the symptom. — David Nequette