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🚿 Bay Area Plumbing Services

Shower Repair
in Bay Area, CA

How long have you been dealing with that leaking shower valve or low water pressure? How annoying it is! Whether your shower drips nonstop, won't hold temperature, or has a cracked pan causing water damage behind the wall, professional shower repair gets the problem fixed before it gets worse. We don't recommend temporary patches on failing shower plumbing. Instead, as a long-term solution, we do full component replacement.

At United Plumbing and Water Heaters, we repair and replace shower valves, cartridges, diverters, shower heads, shower pans, and drain assemblies. We serve Dublin, CA, Pleasanton, Livermore, and communities along the I-80 corridor up to Sacramento and Roseville. Our experienced plumber will shut off the water supply, open the access panel or wall if needed, diagnose the exact failure point, and complete the repair correctly. We use manufacturer-spec replacement parts to ensure the fix lasts.

Get a Free Estimate 📞 +1 (925) 396-9254
★★★★★ 4.9/5 Average | ✓ CSLB Licensed #1116823
Shower Repair and Installation Bay Area

Signs You Need Shower Repair

Many homeowners ignore a slow shower drip or slight temperature fluctuation, but these small issues can escalate into mold growth behind the wall, rotted subfloor, and thousands of dollars in structural damage. A licensed plumber can identify the exact component that's failing and fix it before the damage spreads. If you notice any of the following signs, contact us.

Dripping or Leaking Shower Head

A shower head that drips after you turn the handle off usually has a worn cartridge or damaged O-ring inside the valve body. In most cases the cartridge needs to be replaced. Leaving it dripping wastes 5 to 10 gallons of water per day.

Water Won't Hold Temperature

If your shower goes from hot to cold randomly, the pressure-balancing valve or thermostatic cartridge is failing. This is especially dangerous for children and elderly family members. The valve needs to be inspected and replaced by a licensed plumber.

Low Water Pressure

Weak water pressure in the shower can come from mineral buildup inside the shower head, a partially closed shut-off valve, or a corroded supply line behind the wall. Northern California's hard water makes this problem more common in homes over 15 years old.

Water Leaking Behind the Wall

Stains on the ceiling below a second-floor bathroom, bubbling paint, or soft drywall near the shower are signs of a hidden leak. The source is usually a failed valve connection or cracked shower pan. This requires immediate professional attention to prevent structural damage.

Diverter Not Switching Properly

If pulling the diverter knob doesn't fully redirect water from the tub spout to the shower head, the diverter valve is worn. Water continues flowing from both outlets at once, reducing shower pressure and wasting water.

Cracked or Damaged Shower Pan

A cracked shower pan or base allows water to seep underneath with every use. You might not see the damage until the subfloor starts to rot or mold appears. Once the pan is cracked, repair is not reliable. The pan needs to be replaced.

How Our Shower Repair Service Works

01

Call or Book Online

Contact us by phone or through our online form. We confirm your appointment immediately and give you an arrival window.

02

Technician Arrives Fast

Our licensed plumber arrives on time, shuts off the water, removes the trim and handle, and inspects the valve body, cartridge, supply lines, and drain connections to find the exact failure point.

03

Flat-Rate Quote

We give you a clear, flat-rate price before touching anything. No hidden fees, no surprises. Shower cartridge replacement typically costs $300 to $500, while shower valve replacement can range from $1,800 to $2,500.

04

Repair & Cleanup

We replace the failed part, reassemble the trim, test water flow and temperature, check for leaks, and leave your bathroom clean. Every job is backed by our warranty on parts and labor.

Why Bay Area Homeowners Choose Us?

Over 7 years and 16,000+ jobs completed across Bay Area & Sacramento.

  • ✓CSLB License #1116823
  • ✓Flat-rate pricing
  • ✓Same-day shower repair available
  • ✓Warranty on all parts and labor
  • ✓Available 24/7 with no overtime charges
  • ✓FREE visual plumbing diagnostic
  • ✓We work with all valve and fixture brands
United Plumbing Team
Shower Valve & Fixture Brands We Service
Moen Delta Kohler Grohe Pfister American Standard

Shower Repair Service Areas in Bay Area

We provide shower repair and installation across the following cities and surrounding areas:

San Jose
Fremont
Concord
Walnut Creek
Richmond
Pleasanton
Livermore
Dublin
San Ramon
Vallejo
Napa
Fairfield
Vacaville
Sacramento
Roseville
Davis
Elk Grove

Frequently Asked Questions

Common questions about shower repair and installation in Bay Area.

How much does shower repair cost?
Shower cartridge replacement typically costs $300 to $500, while shower valve replacement can range from $1,800 to $2,500.
How long does a shower valve replacement take?
A standard cartridge swap takes about 45 minutes to an hour. A full valve body replacement where the plumber needs to cut into the wall, solder new connections, and patch the access point takes 2 to 4 hours. We complete most shower valve jobs same-day.
Why does my shower drip after I turn it off?
A shower that keeps dripping after you turn the handle off has a worn cartridge or damaged seat washer inside the valve. The cartridge is the internal component that controls water flow. Over time it wears down and can no longer create a watertight seal. Replacing the cartridge stops the drip.
Why does my shower water go from hot to cold?
Temperature fluctuations are caused by a failing pressure-balancing valve. This valve is designed to maintain a constant mix of hot and cold water even when someone flushes a toilet or runs a faucet elsewhere in the house. When the internal spool or cartridge wears out, the valve can no longer compensate, and the water temperature swings. Replacing the cartridge or the entire valve body fixes the problem.
Can I fix a leaking shower myself?
Replacing a shower head or tightening a loose connection is manageable for most homeowners. However, replacing a shower cartridge or valve requires shutting off the water supply, removing the trim plate and handle, and pulling the cartridge with a specialized tool. If the valve is behind tile, you risk cracking tiles or causing water damage inside the wall. Please don't forget to shut off the main water supply first! As you can flood your bathroom quickly.
How do I know if my shower valve needs to be replaced?
The most common signs are persistent dripping after the shower is turned off, inability to control water temperature, visible corrosion on the valve body, and leaks behind the wall. If your home was built before 1990 and still has the original valve, it is likely past its service life and should be inspected by a licensed plumber.
What is the difference between a shower cartridge and a shower valve?
The shower valve is the brass body installed inside the wall that connects to your hot and cold supply lines. The cartridge is the removable internal component that sits inside the valve body and controls water flow and temperature. In most cases only the cartridge needs to be replaced. The valve body itself lasts much longer unless it is corroded or physically damaged.
How long does a shower valve last?
A quality shower valve body can last 20 to 30 years. The cartridge inside it typically needs replacement every 10 to 15 years depending on water quality and usage. In Northern California where hard water is common, mineral buildup can shorten cartridge life to 8 to 10 years.
Do I need a plumber to replace a shower head?
Replacing a standard threaded shower head is a simple DIY task. You unscrew the old head, wrap the threads with Teflon tape, and screw on the new one. No plumber needed. However, if you want to install a rain shower head that requires a new shower arm or ceiling mount, or if the shower arm threads are corroded and won't come off, a plumber can handle it without damaging the pipe inside the wall.
What brands of shower valves do you repair?
We repair and replace valves from all major manufacturers including Moen, Delta, Kohler, Grohe, Pfister, and American Standard. We carry common cartridges on our trucks so most repairs can be completed in a single visit without waiting for parts.

Need Shower Repair in Bay Area?

Get Free Estimate 📞 +1 (925) 396-9254
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