Water heaters are essential for daily comfort, but they can develop problems over time. Knowing how to troubleshoot these issues and understanding when to call a professional can save you time and money. In this guide, we’ll walk you through common water heater issues, what you can fix yourself, and when it’s best to rely on a licensed plumbing contractor in Eagan.
1. Common Water Heater Problems You Can Troubleshoot
Before reaching for the phone, there are several common water heater issues you can address yourself. Here’s a closer look at the most frequent problems and their solutions.
a. No Hot Water
If your water heater isn’t producing hot water, the first step is to identify the type of heater you have: gas or electric.
- Electric Water Heater:Check the circuit breaker to ensure it hasn’t tripped. If it has, reset it and see if the issue resolves. If the breaker trips again, it could indicate a larger electrical issue that requires professional attention.
- Gas Water Heater:Ensure the pilot light is lit. A draft or improper lighting technique can cause it to go out. Follow the manufacturer’s instructions to relight it safely. If the pilot light doesn’t stay on, the thermocouple might be faulty.
b. Water Isn’t Hot Enough
Water that doesn’t get hot enough could be due to a thermostat setting or sediment buildup in the tank.
- Thermostat Check:Locate the thermostat on your water heater and verify it’s set between 120–140°F. Adjust it if necessary and wait for the water to heat up.
- Sediment Buildup:Over time, minerals in water can settle at the bottom of the tank, reducing heating efficiency. Flushing the tank can help. Turn off the power, connect a hose to the drain valve, and empty the tank. Be cautious, as the water inside will be very hot.
c. Leaking Water Heater
A leaking water heater can range from a minor inconvenience to a major problem.
- Check Connections:Inspect the water inlet and outlet connections for loose fittings. Tighten them carefully with a wrench, but avoid over-tightening.
- Inspect the Drain Valve:Ensure the drain valve is closed securely. A slight drip can often be stopped by tightening the valve. If it continues, the valve may need replacement.
d. Strange Noises
Banging, popping, or rumbling sounds from your water heater are usually caused by sediment buildup.
- Flush the Tank:As mentioned earlier, flushing the tank removes sediment. Regular flushing (once or twice a year) prevents the buildup from becoming severe.
- Check the Heating Element:In electric heaters, a faulty heating element can also cause noise. Replacing the element may resolve the issue.
2. When to Call a Professional
a. Frequent Cycling On and Off
If your water heater frequently turns on and off, it could indicate a problem with the thermostat, heating element, or gas burner.
- Thermostat Issues:A faulty thermostat might fail to sense water temperature accurately, causing the heater to cycle unnecessarily. A technician can test and replace the thermostat to resolve the issue.
- Heating Element Problems:Electric water heaters with damaged heating elements may fail to heat water consistently, leading to frequent cycling. Replacing the element is a delicate task that requires proper tools and skills.
- Gas Burner Issues:For gas water heaters, problems with the gas burner or ignition system can cause irregular operation. These components should only be serviced by licensed professionals.
b. Faulty Pressure Relief Valve
The pressure relief valve is a critical safety feature that prevents excessive pressure buildup inside the tank. If it malfunctions, it can lead to dangerous situations, such as tank explosions.
- Signs of a Faulty Valve:Constant dripping or hissing noises may indicate the valve isn’t sealing correctly.
- Professional Service:A plumber can replace the valve and inspect the tank for underlying issues, such as pressure imbalances or damage caused by overheating.
c. Corrosion Inside the Tank
Rust and corrosion are major threats to the longevity of your water heater. Over time, the inner lining of the tank can degrade, leading to leaks and structural failure.
- Signs of Corrosion:If you notice rusty water coming from your hot water taps or visible rust on the exterior of the tank, it’s time to act.
- Anode Rod Replacement:The anode rod is a sacrificial component that prevents rust by attracting corrosive elements. Replacing it periodically can help protect the tank from corrosion.

A water heating system
d. Pilot Light or Ignition System Failures
A gas water heater’s pilot light or ignition system is responsible for starting the heating process. Persistent issues with these components may indicate deeper problems with gas supply lines or controls.
- Gas Leaks:A gas leak near the water heater is a serious safety concern. If you detect a sulfur or rotten egg smell, turn off the gas supply and contact a professional immediately.
- Thermocouple Replacement:A worn-out thermocouple may prevent the pilot light from staying lit. This small yet vital component should be replaced by a technician.
e. High Energy Bills
If your energy costs have increased unexpectedly, your water heater may be working harder than necessary.
- Inefficiency Causes:Sediment buildup, a malfunctioning thermostat, or a damaged heating element can force the unit to consume more energy.
- Energy-Efficient Solutions:A professional can clean or replace components, perform a system tune-up, or recommend upgrading to a more energy-efficient model if your current heater is outdated.

A man fixing a water heater pipe
3. How to Perform Routine Maintenance
Preventing problems is always better than fixing them. Routine maintenance helps extend the life of your water heater and keeps it running efficiently.
a. Flush the Tank
Flushing your water heater at least once a year removes sediment that reduces efficiency and causes wear.
b. Check the Anode Rod
The anode rod attracts minerals that would otherwise corrode the tank. Inspect it annually and replace it if it’s less than ½ inch thick or coated in calcium.
c. Test the Pressure Relief Valve
Lift the pressure relief valve lever and release it. If water doesn’t come out or the valve continues to leak, it needs replacement.
d. Insulate the Tank and Pipes
Adding insulation to the water heater tank and pipes minimizes heat loss and improves efficiency. Use pre-cut pipe insulation and an insulation blanket for the tank.
4. Safety Tips for DIY Repairs
If you’re planning to tackle minor water heater repairs, taking proper safety precautions is essential to protect yourself and your equipment. Here’s a detailed breakdown of the key steps to ensure a safe and effective repair process:
a. Turn Off the Power or Gas
Before starting any work on your water heater, disconnect the power supply for electric heaters or turn off the gas supply for gas heaters.
- Why It’s Important:Working on a live electrical system can lead to electric shocks, and leaving the gas supply on poses a serious risk of leaks or explosions.
- How to Turn It Off:Locate the circuit breaker for the water heater and switch it off. For gas heaters, turn the gas valve to the “off” position. Always double-check that the power or gas is completely disconnected before proceeding.
b. Allow the Water to Cool
Hot water inside the tank can cause severe burns if it comes into contact with your skin.
- Recommended Cooling Time:Allow the water heater to sit idle for several hours, or test the water temperature at a nearby faucet before draining the tank.
- Drain With Care:Use a garden hose attached to the drain valve to direct the water safely into a floor drain or bucket. Be mindful of splashing, as residual hot water can still pose a danger.
c. Follow Manufacturer Instructions
Each water heater model has unique features and requirements, making the manufacturer’s manual an invaluable resource.
- Locate the Manual:If you don’t have the physical manual, check the manufacturer’s website for a digital copy.
- Key Information to Look For:Learn about your specific model’s parts, troubleshooting tips, and warnings. Adhering to the manual ensures you avoid actions that could void warranties or cause further damage.
d. Use Proper Tools
Using the correct tools is critical for safely completing water heater repairs without damaging its components.
- Essential Tools:Adjustable wrenches, pipe wrenches, pliers, a screwdriver set, and a hose for draining are standard items for water heater maintenance.
- Avoid Improvisation:Avoid using household tools not designed for plumbing tasks, as they can slip or fail, potentially causing injury or damage.
- Personal Protective Equipment:Wear gloves to protect your hands from sharp edges and safety goggles to shield your eyes from splashes or debris.
e. Work in a Well-Ventilated Area
For gas water heaters, ventilation is crucial when working near gas lines or burners.
- Ventilation Requirements:Ensure the area is free from gas buildup and has adequate airflow. Avoid performing repairs in enclosed spaces without proper ventilation.
- Detecting Gas Leaks:Use your nose or a soapy water solution to check for leaks before relighting the pilot light. Bubbles indicate a gas leak, requiring immediate professional attention.
f. Test After Repairs
Once you’ve completed the repair, perform a thorough check to confirm the issue is resolved and the system is functioning safely.
- Restoring Power or Gas:Gradually restore power or gas and observe the heater for unusual noises, leaks, or operational issues.
- Water Pressure Check:Open a hot water tap to confirm steady water flow and proper temperature.
By following these detailed safety tips, you can confidently handle minor repairs while reducing the risk of injury or equipment damage. However, always know your limits—if a repair seems beyond your skill level, it’s best to call a professional for assistance.

A plumber fixing a water heater
Take Control of Your Water Heater Maintenance in Eagan
Water heater issues can range from minor annoyances to significant disruptions, but with the right knowledge, you can address many problems yourself. For more serious concerns, professional plumbers are your best resource for ensuring safe, reliable repairs.
For expert water heater services in Eagan, contact Do It Right Plumbing. From routine maintenance to residential plumbing repair, drain cleaning, and sewer line replacement, we provide fast, dependable solutions to keep your home comfortable and functional.
Call to schedule an appointment today!