Water Pressure Regulators (PRV) — Los Angeles & the Valleys
Banging Pipes or Weak Showers? It’s Probably Your Pressure Regulator.
We test your home’s water pressure, then repair or replace the regulator so it’s in the safe range — protecting your pipes, fixtures, and water heater. Licensed, family-owned, serving LA since 1997.
Book an Appointment
Free Pressure Check — Confirmed Within 1 Hour
🔒No obligation. Confirmed within one hour. Never shared.
Signs your regulator is failing
Banging/hammering pipes when a faucet or valve closes
Faucets that blast, toilets that run, fixtures that leak repeatedly
Repeated pinhole leaks or a water heater that keeps failing
Relief valve on the water heater dripping
Weak shower, slow fill, poor flow when two fixtures run at once
Water pressure drops suddenly when another fixture is turned on
Most homeowners have never had their pressure checked. It takes minutes.
The silent pipe-killer in LA homes
Municipal water often arrives at a house at higher pressure than residential plumbing is designed to take — and in parts of LA, especially hillside and foothill neighborhoods where systems have to push water uphill, incoming pressure can run high. That’s what the pressure-reducing valve (PRV) at your service line is for. Here’s the part most homeowners never hear: a PRV is a wear part. They typically last on the order of 10–15 years, and when one fails, it usually fails open — so pressure climbs quietly and starts destroying things.
Excess pressure is a leading cause of pinhole leaks in copper, blown supply lines, failing fixture valves, running toilets, and shortened water-heater life (it’s often the real reason a heater’s relief valve keeps weeping). Combine high pressure with hard-water scale, and you get accelerated failure everywhere. Test first. We put a gauge on it, show you the number, and tell you honestly whether you need a new PRV, an adjustment, or nothing at all.
What we do
Pressure testing
We show you the gauge reading
PRV repair or replacement
Fix or replace a failing pressure-reducing valve.
Adjustment to the safe range
Adjust water pressure back to a safe, comfortable range.
Thermal expansion tank when code/water-heater setup requires it
Install one when your water-heater setup or local code requires it.
Whole-system check for damage high pressure already caused
Look for damage caused by high pressure, including hidden leaks.
Need help with your water pressure?
We’ll test it, find the cause, and recommend the right fix.
How it works
Call/request online.
Confirmed within one hour.
We gauge your pressure and inspect the PRV
You see the number.
We repair, replace, or adjust
Written price first — guaranteed.
Cost
A pressure test is quick and inexpensive (often free with service — ask). PRV replacement is a modest, well-defined job; cost varies with valve size, location, and pipe condition. It is dramatically cheaper than the repiping, water heater replacement, and water damage that unchecked high pressure eventually causes. Written price before we start.
Why LA chooses Advantage Plumbing & Rooter
24/7 real people
Written prices up front
Licensed CA #1067555
Family-owned since 1997
We test before we sell
Workmanship guarantee
Rated 5.0 ★ across 300+ reviews
Frequently asked questions
Get Your Water Pressure Checked — Confirmed in 1 Hour
Book an Appointment
Free Pressure Check — Confirmed Within 1 Hour
🔒No obligation. Confirmed within one hour. Never shared.
