Control issue
Won’t turn on or off
Internal valve or cartridge problems can affect basic operation and may require repair or replacement.
Shower plumbing
Shower Valve Repair, Replacement & Installation
Repair, replacement and installation for shower valves that will not turn on or off, have temperature problems, or are being upgraded as part of a shower project.
RepairReplaceInstall
Finished shower valve installationValve bodies and trim systems are manufacturer- and model-specific, so compatibility matters.
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Shower valve problems
Control, temperature and compatibility all come back to the valve.
Common calls include a shower that will not turn on or off, no hot water at that shower, a leaking or failing valve, or a planned replacement during remodeling.
Temperature issue
No hot water at the shower
A shower-specific temperature problem may point to the valve, cartridge or related configuration.
Upgrade
New valve system
Pressure-balance, thermostatic and multi-function systems offer different levels of control depending on the shower design.
Replacement considerations
The trim you see and the valve behind the wall must work together.
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Brand and model compatibilityTrim kits, cartridges and valve bodies are generally not interchangeable between manufacturers.
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Wall accessAccess can sometimes be obtained from behind the shower or through a carefully enlarged front opening.
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Renovation trim optionsA remodeling plate may allow a larger opening to be covered when extensive tile replacement can be avoided.
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Temperature protectionNew valves must comply with applicable anti-scald and maximum-temperature requirements.
Pressure balance
Common practical choice
Pressure-balance valves respond to pressure changes in the hot and cold supplies to help maintain a more consistent shower temperature.
Thermostatic
More precise temperature control
Thermostatic systems sense actual temperature and may allow temperature and volume to be controlled independently.
Behind the trim
Rough valve work to finished shower controls.
Real valve replacement and finished-shower examples from A. Plumbing Pro projects.
Frequently asked questions
Shower valve questions.
Access, valve type and trim compatibility should be confirmed before purchasing replacement components.
What type of shower valve should I install?
The best valve depends on desired features, budget and the existing plumbing. Pressure-balance valves are common for standard showers, while thermostatic valves provide more precise temperature control and are often used in higher-end or multi-function systems.
What is the difference between pressure-balance and thermostatic valves?
A pressure-balance valve responds to changes in hot and cold water pressure to help maintain temperature. A thermostatic valve senses and regulates actual water temperature for more precise control.
Can a shower valve be replaced without removing all of the tile?
In many cases, yes. Access may be possible from the wall behind the shower or by carefully enlarging the existing valve opening. A renovation trim plate may sometimes cover a larger access opening.
Can I keep the existing shower trim when replacing the valve?
It depends on the manufacturer and valve model. Trim, cartridges and valve bodies are designed for specific systems, so existing trim can generally only be reused when it is compatible.
Are shower valves and trim kits interchangeable between brands?
Generally, no. Valves, cartridges, handles and trim kits are usually manufacturer- and model-specific, and even within a brand not every trim collection fits every valve body.
How long does shower valve installation or replacement take?
A standard replacement can typically be completed within a few hours when plumbing is readily accessible. Additional time may be required for wall access, piping modifications or multiple shower components.
Can separate volume and temperature controls be installed?
Yes. Certain thermostatic and multi-function systems allow temperature and water volume to be controlled separately and may also serve multiple components such as a showerhead and handheld.
Does a new shower valve need to meet anti-scald requirements?
Yes. New shower valves must meet applicable plumbing-code requirements for temperature protection, and maximum temperature settings must be adjusted according to code and manufacturer instructions.
Having trouble with a shower valve?
Request service for repair or replacement, or contact us before purchasing a new valve/trim system so compatibility can be considered.