Tanked water heaters last 8 to 12 years, while tankless models can last 20 or more. They require regular maintenance to keep them operating safely and efficiently. You may overlook water heaters because plumbers often install them in closets, basements, and garages. Our expert plumbers at A/C & Plumbing Doctors in Gilbert, AZ, want you to know the signs to look for when you need water heater repair or replacement. Knowing when to take action can prevent a loss of hot water or issues that cause water damage in your home.

Water Temperature Inconsistency

When your hot water supply fluctuates between hot and cold, this is a clear indicator that your water heater is not working correctly. Inconsistent temperatures may result from sediment buildup, failing electrical components, or thermostat malfunctions.

Sediment can settle in the bottom of tanked water heaters over time, creating a barrier between the heating element and water. Tankless models may experience mineral buildup that can cause similar issues.

You may notice that the hot water never gets hotter than warm, or your shower may suddenly go cold. A/C & Plumbing Doctors offers water heater maintenance, including draining and flushing tanked models to remove sediment buildup.

Reduced Hot Water Supply

Running out of hot water too fast can indicate some potential issues. If your tank is too small for your family, you may need to upgrade to a larger or tankless unit. Your water heater could also lose efficiency, reducing your hot water supply.

Deteriorating tanks, failing heating elements, and faulty dip tubes are common issues that can reduce the hot water supply. Aging water heaters can also lose their ability to heat effectively. If your water heater is over 10 years old, consider a water heater replacement if the hot water supply is no longer sufficient.

Discolored or Rusty Hot Water

Discolored or rusty water is a sign of tank corrosion. Rust forms on the internal water heater components and can seep into the hot water. This issue causes discoloration and odd hot water odors and tastes.

Test the cold water if your hot water supply has become discolored, such as brownish or reddish. If the cold supply is rusty too, the problem lies in your plumbing lines. If the hot water is only affected, your water heater likely needs a replacement due to corrosion.

Rust inside the tank means the lining is breaking down, which can lead to leaks. Eventually, your water heater may fail.

Unusual Tank Noises

Your water heater should not make loud or strange noises during operation. You likely have sediment buildup inside the tank if you hear rumbling, popping, or banging. As sediment hardens over time, it traps air bubbles that can pop when heated. A professional flush can stop the noise if the sediment buildup is mild. You may need to replace older water heaters that become noisy.

You should have your water heater flushed annually to prevent sediment buildup. Flushing is part of water heater maintenance and includes testing the heater’s function and safety devices.

Water Leaks

Puddles or excessive moisture near or on the tank are signs of significant problems you should not ignore. Pooling water at the tank’s base means you have damage, such as a crack or a loose component. Small leaks can worsen over time and lead to structural damage in your home. Even small drips could lead to mold and mildew growth, compromising your family’s health.

Check for loose fittings and tighten them. A leaking tank requires immediate replacement. We will drain the tank and remove the old water heater to accommodate the new one. Repairs are no longer an option once the tank deteriorates enough to leak.

Lengthy Heating Wait Times

Depending on the size of the tank, your water heater can take thirty minutes to two hours to heat. If you have noticed a lengthy heating time, your water heater could have a problem.

Sediment buildup can slow down the heating process. You could also have a problem with the elements, burners, or other internal components. Delayed heating causes more than discomfort. It also makes your water heater work much harder, increasing electricity costs. Lengthy heating cycles also mean your system is under strain, likely lessening its lifespan.

Decreased Hot Water Pressure

A sudden drop in hot water pressure can have multiple causes. If you have not flushed your water heater, sediment and minerals may clog the pipes or internal components. Scale buildup in tankless models can slow down hot water flow.

Ignoring water pressure issues could cause them to worsen over time, eventually damaging your plumbing system. A professional flush and inspection will determine the best action for your decreased hot water pressure.

Foul Hot Water Odors

Foul-smelling water can result from bacterial growth inside the tank. This issue occurs more frequently in systems where the water sits for a long time. It’s also common in older water heaters or those with heating problems.

Legionella pneumophila is the most common bacteria found in water heater tanks. It thrives in temperatures between 77 and 113 degrees Fahrenheit. Legionella can cause rotten eggs or sulfur odors in hot water, but smell is not always a good indicator of bacterial presence. You can prevent this bacteria from growing by setting your water heater temperature to at least 140 degrees Fahrenheit.

Tank flushing and sanitizing can temporarily fix the problem, but bacteria will typically proliferate again soon. If your water heater becomes overrun with bacteria, you should replace it immediately.

Pilot Light Issues

For gas-powered water heaters, frequent pilot light issues indicate the possibility of a couple of failing parts, including the thermocouple or gas valve. A ventilation issue could also be present.

Ignoring this problem could lead to hot water supply and safety issues. Pilot light issues can lead to gas leaks that could endanger your family. Check for these signs of problems:

  • Extinguishes often
  • Yellow or weak flame
  • Difficulty relighting

You should regularly check the thermocouple and pilot light for signs of wear and tear. Our technicians can help determine whether your pilot light needs cleaning, repair, or replacement. If you have ongoing problems, replacement is usually the safest option.

Tank Swelling or Bulging

Regularly inspect your water heater for signs of external damage. A tank that appears swollen or bulging is under extreme internal pressure. The most common cause of this issue is a failed pressure relief valve.

When working correctly, the pressure relief valve senses increased pressure in the tank and opens to release water through the discharge tube. A failed pressure relief valve with tank swelling is dangerous and can lead to a tank burst.

As a part of annual maintenance, we test the pressure relief valve to ensure it operates effectively. If you notice the signs above, shut off your water heater and get professional help immediately. We must replace a swollen water heater immediately to avoid safety and water damage concerns. Our Service Agreement is an easy way to stay on top of maintenance for your water. heater as well as the rest of your system, but if your water heater needs replacement, we can help with expert installation and financing on approved credit.

Seek Professional Water Heater Services

Water heaters can exhibit multiple signs when they need repair or replacement. A complete inspection and testing can reveal the problem and its severity. Older systems that frequently break down will likely need replacement.

A/C & Plumbing Doctors is an HVAC and plumbing company in Gilbert. We install, maintain, and repair all makes and models of plumbing and HVAC components. Our team also provides indoor air quality, ductwork, and heat pump services. We offer residential and commercial services.

Call our expert plumbers at A/C & Plumbing Doctors if you need water heater services in Gilbert.

company icon