The cause of low pressure in a shower could be any of several issues such as a clogged showerhead, a worn-out mixing valve, closed valve, leaking pipe, or even a faulty water heater. Don't get overwhelmed though, because we're here to help you narrow down and identify the cause of your shower woes.
If you have pressure everywhere, you may just have a clogged up shower head. On a lot of low flow heads, sediment from your pipes, water heater and just from the city water supply, as well as hard water build up can block the shower head. If so, take the shower head apart and clean all the parts.
If your problem wasn't the anti-scalding device, your shower mixing valve has most likely gone bad and is preventing hot water from mixing properly into your shower water.
Over time, mineral deposits from hard water, soap scum, and other debris can accumulate in the small holes of the shower head, restricting water flow.
Pipe blockage, corrosion, or a leak
If you have low water pressure throughout your house and you've checked your internal stopcock is open, there aren't any water issues in your local area, you may have: A hidden leak. Blockage in your pipes. Corrosion in your pipes (can be common in houses with very old piping).
Check for Sediment Buildup
Over time, sediment can accumulate in your water supply lines, reducing the flow to your faucets. If you've noticed a gradual decrease in water pressure leading up to your current problem, sediment buildup is a likely cause.
If you've been unable to identify the problem on your own, or if the issue requires a professional touch, such as a water heater repair or leaky pipes, it's time to call your favorite plumber. Not only will they get your water flowing again, but they can also verify that no other issues are at play.
A PRD cannot be reset once it bursts and must be replaced. See how to change a PRD in our short video in the gallery or available from the Triton Showers YouTube channel, titled 'Electric Showers | How to change a Pressure Relief Device (PRD)'. An instruction leaflet is also supplied with the part.
One of the common reasons for a sudden drop in water pressure is the clogging of pipes. Over time, pipes can become clogged with mineral buildup, rust, or debris that block water flow.
If your water pressure in your shower does not feel as though it's as powerful and/or increasing your hot water doesn't improve the situation, you may have a clogged hot water mixing valve.
If your shower valve is damaged beyond repair, you may need to replace it to prevent leaks. Removing your old valve and installing a new one can take time, but with patience, a novice handyman can do it without the help of a plumber.
This valve is found inside your shower's handle in most modern homes. There are a few different types of valves standard in showers. Pressure balancing valves are installed in showers and sinks, and faucets.
The most common cause of low shower pressure is a blocked showerhead, as a result of limescale build-up. These blockages obstruct the water flow, leading to reduced pressure over time. Most showers are fitted with a filter, protecting the pipework from debris, but this can become partially blocked by scale.
You can tell if your shower valve needs to be replaced when the faucet is shut off but water continues to leak, the water temperature is difficult to control, there are random water temperature changes, or you notice decreases in shower water pressure.
Only your shower has low pressure? In most cases this indicates a fixture specific problem. If the faucet water has good pressure, but not the shower head, the shower head is likely clogged. If your shower head is old, it may be time to replace it.
Replacing a regulator is a simple DIY task if you have basic plumbing skills and the right tools.
Identifying Low Water Pressure Problems
Confirm whether your water pressure is low with a test gauge. This simple device can attach directly to the hose spigot outside the home. After screwing the test gauge onto the spigot, turn the valve on and check the reading. Most homes operate between 30 and 80 psi.