(408) 978-3093

Shower Repair in San Jose, CA: Valves, Leaks and Drains

A dripping showerhead, a valve that won't hold temperature or water showing up where it shouldn't: our San Jose plumbers repair shower valves, drains and leaks, and install new shower valves and plumbing for remodels. Most repairs are quoted as a fixed price after diagnosis; a cartridge replacement is usually a short visit.

  • Google 4.9130+ reviews
  • Licensed C-36 · C-20 · ACSLB License #1101278
  • 1-year labor warranty24/7 service since 1986
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New copper pipes and a shower valve behind an opened tile wall

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Shower Services in San Jose

Repairs that fix the cause, and new installations that pass inspection.

  • Shower valve repair and replacement

    Cartridges, pressure-balancing and thermostatic valves repaired or replaced, often through the trim opening without removing tile.

  • Shower leak repair

    Leaks from valves, shower arms, drains and pans found and repaired before they damage walls and ceilings.

  • Low pressure and temperature swings

    Clogged showerheads and cartridges, failing pressure-balance valves and old galvanized supply lines diagnosed and fixed.

  • Shower drain cleaning and repair

    Slow and clogged shower drains cleared, and leaking drain bodies replaced.

  • Shower plumbing installation

    New valves, diverters, body sprays and handheld showers roughed in for remodels. See shower replacement.

  • Tub and shower faucets

    Tub spouts, diverters and two- and three-handle tub and shower faucets repaired or converted to a single valve.

Signs Your Shower Needs Repair

Shower problems tend to start small and hide behind tile.

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  • A dripping showerhead or tub spout

    A worn cartridge or washer in the valve.

  • Sudden hot or cold bursts

    A failing pressure-balancing valve, or one that was never installed in an older shower.

  • Low pressure in the shower only

    Mineral buildup in the showerhead or cartridge, or a restricted valve.

  • Stains on the ceiling below

    A leaking valve, drain or shower pan above.

  • Loose tile or soft walls

    Water getting behind tile from a leak or failed grout.

  • A slow shower drain

    Hair and soap buildup, or a problem further down the line.

This page covers repairs to the shower you have. Replacing a shower, converting a tub or remodeling? See shower replacement and installation.

Shower Valve Types

  • Pressure-balancing valves keep the hot-to-cold ratio steady when someone flushes a toilet, preventing scalding and cold shocks. They’re the most common single-handle valve.
  • Thermostatic valves hold an exact temperature and often allow separate control of flow and temperature, useful for multi-head showers.
  • Older two- and three-handle valves use compression stems and washers and usually lack anti-scald protection.

When a valve fails, a new cartridge often fixes it. If parts are discontinued or the valve is an older type, we replace the valve body, usually without tearing out the whole wall.

Finding and Fixing Shower Leaks

A shower can leak from four places: the valve and its connections, the shower arm, the drain, or the pan beneath the floor. Each needs a different test. We check the valve and arm with the water running, test the drain with water directed at it, and flood-test the pan when needed. Knowing which one is leaking keeps the repair, and the tile work, as small as possible.

When It’s Time to Replace the Shower

If the valve is outdated, the pan is leaking or the tile is failing, replacing the shower may cost less than chasing repairs. See shower replacement and remodel plumbing.

Sources

Checked October 2026.

How Much Does Shower Repair Cost in San Jose?

Most shower repairs are quoted as a fixed price after diagnosis. A cartridge replacement is a short visit; a valve replacement or leak repair behind tile takes longer.

Typical shower repair and installation prices in San Jose, installed, in US dollars. Checked October 2026.
ServiceTypical San Jose price (USD)
Flat-rate pricingTypically based on $150–$250 per hour, plus parts and drive time
Shower drain cleaning$250–$600
Finding a hidden shower leak$150–$600
Inspection feeWaived for service plan members$59

What affects the price

  • Valve access. Many valves can be replaced through the trim opening; others need an access panel or tile work.
  • Brand and parts. Discontinued valves may need replacing rather than repairing.
  • Leak location. Drain and pan leaks take more work than valve leaks.
  • Tile repair. Plumbing is ours; tile and drywall repair are separate.

Most repairs are quoted as a fixed price before we start. Ranges are typical for San Jose and the South Bay and don't include current specials.

Read the leak detection cost guide →

How Our Shower Repair Works

  1. Diagnose

    We identify the valve brand and model, test pressure and temperature, and trace any leak.

  2. Written price

    You get a written price for repair or replacement, with access options explained.

  3. Repair

    We use manufacturer cartridges where available, and protect the tub, tile and floors.

  4. Test

    We check temperature, pressure and the anti-scald limit, and look for leaks.

Showers in San Jose Homes

Why shower problems are common in South Bay homes.

  • Hard water

    Moderately hard South Bay water clogs showerheads and wears cartridges, reducing pressure and causing drips.

  • Older valves

    Many 1950s to 1970s bathrooms have two- or three-handle valves without anti-scald protection, which current code requires on new valves.

  • Galvanized supply pipe

    Old galvanized pipe narrows inside and starves showers of pressure; a repipe fixes it.

Neighborhoods we serve: Downtown San Jose · Willow Glen · East San Jose · South San Jose · Evergreen · Cambrian Park · West San Jose · Berryessa · North San Jose · Blossom Valley

Current Specials

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What Our Customers Say

Google 4.9 from 130+ reviews: read more →See photos of our work →

  • I had an overflowing bathroom sink with no way of stopping or knowing how to stop it. Upon calling management, they reached out to CPI who immediately responded by sending a wonderful soul called Dustin to our rescue. Dustin mitigated the problem instantly and both with great care and ease. As overwhelmed and as helpless I felt, Dustin’s incredible professionalism and high level of emotional intelligence skills dissipated that feeling. His shrewd judge of character and due diligence also saved the person’s apartment next to mine as he observed our pipes were connected. Dustin’s random act of kindness of informing property management to contact the owner of that apartment saved them from incurring the same problem as I was facing. Luckily the elderly gentleman who did not live there anymore drove down and was able to get his place restored properly too. Dustin’s empathetic mannerisms, patience and admirable communication skills provided clarity and calmness to both I and the gentlemen. We truly appreciate the help and kindness that was shown to us. Dustin truly epitomizes the saying “In a world where you can be anything, be kind.” Thank you again

    Reena L.Yelp review

  • Great service and great attitude. Dustin and Jay were up front with the time and cost. They explained the process and walked us through all the work they did. True pros, will definitely do business with them again. Thank you for fixing the leak!

    Tran C.Google review

  • I have used CPI for many years and they are the best! Luis was my tech this time and he was excellent. Explained everything to me and did a great job.

    Bernadette S.Google review

Shower Repair and Installation FAQs

Why does my shower drip after I turn it off?

Usually a worn cartridge or washer in the valve. A little water draining from the showerhead right after is normal; a steady drip isn't.

Why does my shower suddenly go hot or cold?

When another fixture runs, a pressure-balancing valve should compensate. If yours doesn't, the cartridge may be failing, or the valve is an older type without that protection.

Can a shower valve be replaced without removing tile?

Often, yes, through the trim opening or an access panel on the other side of the wall. We'll tell you before we start.

How do I know if my shower is leaking behind the wall?

Look for ceiling stains below, loose tile, soft drywall or musty smells. We can test the valve, drain and pan separately to find it.

Do you install shower valves for remodels?

Yes. We rough in valves and supply lines to fit your trim, then return to set the trim after tile.

Helpful Guides

Serving San Jose and the South Bay

Our shop is at 2880 Aiello Dr in San Jose. We provide shower repair and installation across the city and nearby South Bay and Peninsula communities. See our full service area.

Content and prices reviewed October 2026.

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