How to Fix a Water Heater That's Not Heating

There's nothing worse than stepping into a cold shower when you're expecting warm water. If your water heater isn't heating, don't worry - there are several common issues you can troubleshoot and potentially fix yourself.

While you might be tempted to call for emergency plumbing services, the Duell Plumbing & Heating team is here to guide you through the steps needed to diagnose and solve the problem and signs it might be time for a replacement.

Signs Your Water Heater is Failing

Before you grab your toolbox, it's essential to identify the symptoms of a failing water heater:

Inconsistent Water Temperature: If your water goes between lukewarm and scalding without notice, your heater might have a problem.
No Hot Water: This one's a giveaway. If you're not getting any hot water at all, something's definitely wrong.
Strange Noises: Popping, banging, or rumbling sounds can indicate sediment build-up.
Leaks: Water pooling around your heater is never a good sign.
Rusty Water: If the water from your faucet looks rusty, the heater might be corroding from the inside.

No Hot Water? Check the Thermostat

An incorrectly set thermostat is often the cause and can be the simplest fix.

Here's how to check it!

Turn Off Power: For electric heaters, switch off the breaker. For gas heaters, ensure the gas valve is in the "off" position.
Access the Thermostat: Remove the access panel on your water heater to reveal the thermostat.
Check the Temperature Setting: The recommended setting is around 120°F. If it's set much lower, adjust it accordingly.
Test the Thermostat: Use a multimeter to check if the thermostat is functioning. If it's not, it may need replacing.

How to Flush a Water Heater Tank

Sediment build-up can drastically reduce your water heater's efficiency.

Flushing the tank can help!

Turn Off the Heater

With gas heaters, turn off the supply, or if you have an electric unit, shut off the power at the breaker.

Connect a Hose to the Drain Valve

Attach a hose to the drain valve and place the other end in a suitable drainage area.

Drain the Tank

Open the drain valve and allow the water to flow out until it runs clear, which indicates that most of the sediment has been flushed.

Refill & Restart the Heater

Close the drain valve, remove the hose, and refill the tank. Turn the power or gas back on.

When to Replace Heating Elements

If your water heater still isn't working after flushing, the heating elements might be the issue. While this isn't recommended to do as a DIY project and should be completed by an expert like the the Duell Plumbing & Heating team.

If you have experience with electrical components, here's how to check and replace them:

Turn Off Power & Water Supply: Turn off the heater's power and water supply.
Remove the Heating Element: Unscrew and remove the heating element using an appropriate wrench.
Test the Element: Use a multimeter to check for continuity. If no reading is obtained, the element is faulty.
Replace the Element: Insert a new heating element and secure it tightly. Reconnect the water supply and power.

How to Decide Between a Water Heater Installation or Repair

Even after all the steps, if your unit is still not functioning properly, sometimes fixing it might not be the best option.

A few signs it might be time for a new installation are age, frequent issues, and energy use.

Age

If your water heater is over 10-15 years old, replacement might be more cost-effective than frequent repairs.

Frequent Issues

Constant breakdowns and repairs can indicate that it's time for a new unit.

Energy Efficiency

Newer models are more energy-efficient, which can save money in the long run.

Your Go-To for Expert HVAC, Plumbing Services, & Water Heater Support

While DIY fixes can solve many issues, some problems require professional help. That's where Duell Plumbing & Heating comes in. We specialize in plumbing services, including water heaters, HVAC units, and radiant heating systems.

Our expert team is ready to diagnose and repair any water heater issues, and we offer financing options to keep your budget in check.

Don't suffer through another cold shower. Contact Duell Plumbing & Heating today to schedule a service. We're here to make sure your home stays warm and comfortable year-round.