No Hot Water in the Shower? Here’s How to Troubleshoot the Problem

Nothing is worse than stepping into the shower expecting it to be hot and finding the water frigid instead. This is a common problem, however, with several possible causes and solutions. The most common reasons for no hot water in the shower are issues with the anti-scald device, shower cartridge, and mixing valve.

Is It Your Shower or Water Heater?

If there’s no hot water in your shower, you should first check if there’s hot water anywhere else in your home. If none of your fixtures have hot water, then the problem is with your water heater. For example, it could be that the pilot light has gone out, the burner is faulty, or the thermostat is malfunctioning. Regular water heater maintenance can prevent these issues.

If the sink in the same bathroom as your shower does have hot water, then the problem is with your shower.

Common Reasons for No Hot Water in the Shower

Anti-Scald Device Set Too Low

The anti-scald device is a safety feature intended to prevent dangerously high water temperatures. It usually works by limiting how far you can turn the shower handle toward the hot setting. If it’s set too low, it will stop your shower water from getting hot. The anti-scald device is usually installed behind your shower handle. You’ll have to remove the shower handle to locate the anti-scald device, which is usually a plastic disc or ring with notches that limit the handle’s movement. Rotate the device counter-clockwise to allow for more movement, then reinstall the handle and test the water temperature. Make sure not to set the anti-scald device too high, or you’ll run the risk of scalding injuries.

Faulty Shower Cartridge or Mixing Valve

The shower cartridge sits inside the mixing valve, and together, they control the mix of hot and cold water in your shower. Over time, wear and tear or mineral buildup can erode or clog these components, leading to no hot water in your shower. Swapping a shower cartridge is relatively easy. Remove the shower handle and pull the cartridge out of the valve, using a cartridge-pulling tool if necessary. If it’s covered with mineral deposits, you can try soaking it in white vinegar for a few hours to dissolve them. If it’s damaged, simply replace it with another shower cartridge of the same type.

Fixing a mixing valve is more difficult than replacing a cartridge. We recommend calling a professional plumber for assistance if you think you’re dealing with a faulty mixing valve.

When to Call a Plumber

If you’ve tried adjusting the anti-scald device and changing the shower cartridge, you may be dealing with a more complex problem that is preventing your shower from getting hot. If DIY fixes aren’t working or if you’re worried about damaging your plumbing, it’s best to call a professional plumber.

At Robillard Plumbing, we are experts in plumbing issues big and small. If there’s no hot water in your shower and you’re not sure why, we can help. Contact us today for a fast and effective solution. Based in Maple Grove, MN, we serve the entire northwest metro area.

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How to Use a Plunger Like a Pro: The Ultimate Drain-Clearing Guide

We’ve all been there: you flush the toilet or drain the sink, and instead of the water disappearing, it starts to rise. Panic sets in, and you reach for the most trusted tool in your utility closet. But do you actually know how to use a plunger correctly?

While it seems simple, there is a specific technique to plunging that makes the difference between a quick fix and a messy disaster. At Robillard Plumbing, we want to help you handle the small stuff safely. Here is your master class in effective plunging.

Step 1: Choose the Right Plunger

Believe it or not, different plungers are designed for different tasks. Using the wrong one is the most common reason homeowners fail to clear a clog.

• The Cup Plunger: This is the classic “red rubber” plunger with a flat bottom. It is designed for flat surfaces, like sinks, bathtubs, and showers. It does not work well on toilets because it cannot create a proper seal.
• The Flange (Toilet) Plunger: This plunger has a fold-out rubber flap (the flange) at the bottom. This flap is designed to fit perfectly into the curved drain of a toilet bowl to create a powerful vacuum.

Step 2: Prepare the Area

Before you start, make sure you aren’t about to make a mess.

1. Check the Water Level: For a plunger to work, the rubber cup needs to be submerged in water. If the sink or toilet is empty, add enough water to cover the plunger head. If it’s overflowing, bail some out into a bucket.
2. Protect the Floor: Lay down some towels or newspaper around the base of the fixture to catch any splashes.

Step 3: Create the Seal

This is the most important part of learning how to use a plunger.

1. Place the plunger into the drain at an angle to allow air to escape from the cup (trapping air inside compresses it, which weakens the pressure).
2. Press down firmly but slowly to ensure the rubber is sealed tight against the drain opening. If you’re plunging a sink, use a wet rag to plug the “overflow” hole—otherwise, the air pressure will just escape out of that hole instead of pushing against the clog.

Step 4: The Plunging Motion

Many people think the “push” is what clears the clog, but it’s actually the pull.

1. Push down to get the air out, then pull up sharply.
2. Maintain the seal and continue a vigorous “push-and-pull” rhythm for about 15 to 20 seconds.
3. The goal is to move the water back and forth, which loosens the obstruction until it breaks apart or moves down the line.

Step 5: Test the Result

After several cycles of plunging, pull the plunger away. If the water rushes down the drain, you’ve succeeded! If you’re clearing a toilet, give it one more flush to ensure everything is moving freely.

When the Plunger Isn’t Enough

If you’ve tried the steps above three or four times and the water still won’t budge, you likely have a more serious issue than a simple surface clog.

Stop plunging if:

• Water is backing up into other fixtures (like the shower when you flush).
• The water has a foul, sewage-like odor.
• You’ve used chemical drain cleaners (plunging can splash these dangerous chemicals onto your skin or eyes).

In these cases, you might be dealing with a main line blockage or a stubborn object that requires a professional drain snake.

Don’t let a stubborn drain ruin your day! If your DIY efforts aren’t working, contact the experts at Robillard Plumbing at (763) 424-5514. We have the professional tools to clear any clog, guaranteed.

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