5 Common Gas Hot Water Issues (And How to Solve Them)

One of the most common problems people face with their gas hot water system is a pilot light that goes out. The pilot light is responsible for igniting the gas in the burner, and if it’s not lit, your system won’t generate any hot water.

How to Fix It:

If you find your gas hot water heater not working, check the pilot light. Most systems have an access panel with a window so you can see the flame. If the light is out, follow these steps:

1. Turn off the gas valve for safety and wait for a few minutes to let the gas dissipate.
2. Relight the pilot light using the manufacturer’s instructions.
3. Turn the gas valve back on and ensure the pilot stays lit.

If the light keeps going out or if you’re unsure about relighting it safely, it’s best to call a qualified plumber to inspect your gas hot water in Melbourne and ensure there are no underlying issues such as a faulty thermocouple or gas supply problems.

Another common complaint we hear is fluctuating or inconsistent hot water temperatures. It’s not uncommon for the temperature to drop unexpectedly, making showers uncomfortable or even unsafe.

How to Fix It:

Inconsistent hot water temperature can be caused by several factors:

• Thermostat issues: The thermostat in your gas hot water heater controls the water temperature. If it’s malfunctioning, the water temperature may fluctuate. It’s often set too low or may have become miscalibrated.
• Sediment buildup: Over time, minerals from your water supply can accumulate at the bottom of the tank, especially in areas with hard water. This buildup can interfere with the heating process and cause temperature irregularities.
• Fluctuating water pressure: Sometimes, inconsistent water pressure in your system can cause temperature changes, particularly if multiple taps are running at once.

To fix this, start by:

• Checking and resetting the thermostat to your preferred temperature setting. It’s generally recommended to set it between 60°C to 65°C for both efficiency and safety.
• Flushing your system to remove sediment buildup. This should be done at least once a year to maintain your gas hot water heater’s efficiency.
• Inspecting your water pressure. If it’s too high or low, you may need to adjust the regulator or seek professional advice.

If you’ve turned on your hot tap and nothing but cold water comes out, it’s a clear sign your gas hot water heater is malfunctioning. This is one of the most inconvenient issues, especially when you rely on hot water for daily use.

How to Fix It:

Before you panic, there are a few things you can check to resolve this:

1. Ensure the gas supply is on. Check your gas meter and any gas valves connected to your heater. If the gas is off, your system won’t heat the water.
2. Check for a blown fuse or tripped circuit breaker. If your gas hot water heater has an electric ignition or requires electricity to power the control system, a blown fuse or tripped breaker could be the culprit.
3. Inspect the gas control valve. If the valve is faulty, the heater won’t receive gas to ignite, preventing it from heating the water. This may need to be replaced by a plumber.

If none of these steps resolve the issue, you’ll likely need an expert gas hot water service. A licensed plumber will be able to inspect the system, identify the issue, and replace any broken components.

Hearing strange noises, like popping, rumbling, or sizzling sounds, coming from your gas hot water heater is often a sign of a problem. These noises are typically caused by sediment buildup in the tank or a faulty valve.

How to Fix It:

To fix this, start by:

• Flushing the tank to remove the sediment. As mentioned earlier, sediment buildup is common, especially in areas with hard water. Over time, it can cause overheating and interfere with the heating process, resulting in strange sounds.
• Checking the anode rod: The anode rod is designed to prevent corrosion inside your tank, but it can become worn over time. If it’s deteriorating, your system may begin to rust, and the buildup of minerals could worsen. A plumber can inspect and replace the anode rod if necessary.

If the noises persist, it’s important to have a professional check for internal gas water heater damage to the tank or components.

If you notice a strange or foul odor coming from your hot water, it may be a sign of bacterial growth inside your gas hot water heater. This can be particularly common in systems that are set to low temperatures or in homes with low water usage.

How to Fix It:

Foul-smelling water is usually caused by bacterial growth in the tank, particularly a type of bacteria known as sulfate-reducing bacteria that can thrive in the absence of high temperatures. Here’s how to solve it:

1. Increase the temperature of your gas hot water heater to at least 60°C to kill off bacteria.
2. Flush the system to remove any bacteria and sediment. Make sure to replace the anode rod if necessary, as it can contribute to bacterial growth if it’s deteriorated.
3. Install a UV purifier if you’re in an area with high levels of bacterial contamination. This will help prevent future growth and ensure your water stays fresh and clean.

If the odor persists after taking these steps, contact a local plumber Melbourne who can clean the system thoroughly and disinfect it to prevent further bacterial buildup.

Gas hot water heaters are essential in Melbourne homes, providing the comfort and convenience of hot water on demand. However, when issues arise, it’s important to diagnose and fix them quickly to prevent further damage. By addressing these common problems, whether it’s pilot light issues, inconsistent temperatures, or foul-smelling water, you can keep your gas hot water system running efficiently and safely.

If you encounter a problem with your hot water system gas that you can’t resolve on your own, don’t hesitate to contact a trusted plumber like Flowsafe Plumbing. We provide a wide range of gas hot water service in Melbourne, ensuring your home’s water heating system remains in top condition. Reach out to our plumbers now at 0489 982 138 or request a free quote and let us take care of your needs for gas hot water in Melbourne areas.