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Why Your Water Heater Keeps Tripping the Breaker: What To Look for and FAQs

 In Uncategorized

A suddenly freezing shower. A skyrocketing electric bill. Appliances that inexplicably shut down. 

Why does your hot water heater keep tripping the breaker? We have the answer!

Here, the professionals at All Pro Plumbing reveal several possible reasons why hot water heaters trip breakers, offer tips for troubleshooting, and provide expert answers to common water heater breaker questions. 

water heater tripping breaker

Table of Contents

Why Would My Hot Water Heater Trip the Breaker?

A hot water heater tripping a breaker may be caused by several factors, including:

  • Bad wiring
  • A burnt-out heating element
  • A faulty thermostat
  • An overloaded circuit
  • An aging unit
  • Water intrusion
  • Sediment buildup

If your hot water heater keeps tripping a breaker, the team at All Pro Plumbing can help. Our local, family & veteran-owned plumbing company has served the Greater Portland Metro area for over 20 years. With experience, professionalism, and strong customer focus, our top-to-bottom plumbing company is proud to serve your plumbing needs.

7 Reasons Why Your Water Heater Keeps Tripping the Breaker

#1: Bad Wiring

Inferior, damaged, loose, or corroded connections and wiring inside the water heater’s panels can lead to electrical malfunctions that cause the water heater’s breaker to trip. 

Signs of faulty wiring on a water heater include: 

  • A burning smell
  • Burn marks on the wiring or terminal screws
  • Loose wires
  • Flickering lights
  • Slow heating
  • Long recovery times
  • Inconsistent temperatures
  • No hot water

#2: Burnt-Out Heating Element

The heating element is responsible for heating the water inside the tank. Eventually, the elements can deteriorate and fail, leading to an electrical imbalance that causes the breaker to trip.

Signs your heating element may not be working properly or is fully burnt out include:

  • Lack of hot water
  • Strange noises
  • Rusty water

#3: Faulty Thermostat

The thermostat regulates the water temperature inside the tank. If it malfunctions, the water heater can overheat and cause a circuit overload that trips the breaker.

Signs of a bad thermostat include:

  • Inconsistent water temperature
  • Frequently-tripping circuit breaker
  • Water that is too hot, not hot enough, or completely cold 
  • High energy bills
  • Unusual noises
  • A tripped high-temperature cutoff switch

#4: Overloaded Circuit

If your water heater shares a circuit with a washing machine, air conditioner, or other high-powered appliances, it may cause the circuit to overload. 

Signs of a circuit overload include:

  • Burning smell
  • Circuit breaker feels hot to the touch
  • Scorched outlets
  • Dimming lights
  • Strange noises

If you think an overloaded circuit may be the cause of your water heater tripping the breaker, having a dedicated circuit for your water heater or redistributing the load may solve the issue.

#5: Aging Unit

If your water heater is nearing the end of its lifespan, it may develop issues that can cause the circuit breaker to trip. 

With regular maintenance, tankless water heaters can last up to 20 years or more, while traditional storage tank styles generally last 8 to 12 years.

Signs it may be time to update your water heater include:

  • Tripping breakers
  • Leaks
  • Strange noises
  • Rusty or smelly water
  • Unheated water
  • No water
  • Increase in energy bills

#6: Water Intrusion

If leakage is occurring around your water heater unit’s wiring compartment or heating element connections, it can cause a ground fault. When this occurs, electricity flows through water to the ground, tripping the breaker. 

Signs of water intrusion in or near your water heater include: 

  • Drips, puddles, or standing water at the base of the unit
  • White, powdery corrosion on fittings near the heating element casing
  • Rust or moisture near electrical connections
  • Hissing, crackling, or popping sounds 
  • Musty odors near the unit
  • Brittle, scorched, or melted wiring, particularly near the thermostat or heating elements

#7: Sediment Buildup

Over time, water sediment can build up at the bottom of your water heater’s tank due to: 

  • Mineral deposits from hard water
  • Contaminants like sand, dirt, and silt from municipal water lines or well systems
  • Internal corrosion and rust from a depleted anode rod or aging tank liner

If too much sediment accumulates in the tank, it can:

  • Cover the lower heating element
  • Cause it to overheat
  • Lead to premature element failure
  • Eventually trip the breaker

How To Troubleshoot a Water Heater That Keeps Tripping a Breaker

Follow these steps to try to determine why your water heater keeps tripping the breaker:

  1. Turn off the power at the breaker panel.
  2. Check for water on the ground near the unit.
  3. Inspect the elements for damage. 
  4. Use a multimeter to test for a short circuit in the lower and upper elements.
  5. Inspect the wiring to check for loose wires or signs of heat damage in the electrical box.
  6. Reset the high-limit safety switch. 

If the breaker continues to trip after resetting, or you suspect a faulty heating element, call the professionals at All Pro Plumbing. Our expert team can diagnose the issue and recommend the best course of action. 

 

water heater tripping breaker

 

FAQs About a Water Heater Tripping the Breaker

What Do I Do If My Heater Keeps Tripping the Breaker?

If your water heater keeps tripping the breaker: 

  • Reduce the electrical load by using fewer appliances on the same circuit.
  • Check for a dirty air filter, blocked vents, or frayed wiring.
  • Consider the age of the unit.
  • Call All Pro Plumbing for an inspection.

Is It Dangerous If My Water Heater Circuit Breaker Keeps Tripping?

Yes, a regularly tripping breaker can be hazardous. 

Repeated trips may indicate an electrical issue that can cause overheating or fire risk. If tripping continues, stop resetting the breaker and call the professionals at All Pro Plumbing to inspect your unit.

Will Replacing the Breaker Fix the Problem?

If the breaker is faulty, it may. However, replacing the breaker without solving the underlying issue may result in continued trips. 

It’s best to call a professional plumber to determine whether the issue lies with the wiring, breaker, or the heater itself.

What Size Breaker Is Best for a Water Heater?

While it’s always best to check the rating label on the water heater, most residential electric water heaters should use:

  • 30-amp double-pole breaker
  • 240 volts
  • 10-gauge wire

If My Water Heater Keeps Tripping the Breaker, Should I Reset It?

In some situations, resetting a tripped breaker is fine, but continued tripping should be considered a warning sign. 

Why Does My Water Heater Trip the Breaker Immediately After It Turns On?

If your water heater keeps instantly tripping, it typically indicates:

  • Water inside the electrical compartment
  • A direct short in the wiring
  • The heating element is grounded to the tank

Immediate circuit breaker trips should be taken more seriously than delayed trips.

Why Does My Water Heater Trip the Breaker After It Has Been Running for a While?

If your water heater trips after it’s been running for 5–30 minutes, it often suggests heat buildup rather than a direct short. Other possible causes may include:

  • A failing breaker is overheating
  • Loose electrical connections
  • Overheating due to sediment buildup
  • A failing heating element

Can a Water Leak Cause a Water Heater To Keep Tripping a Breaker?

Yes. If moisture gets inside the unit’s electrical components, it can cause short circuits that will trip the breaker. Even seemingly small leaks can create serious electrical problems, so it’s best to call a plumber for an inspection.

When Is It Time To Call a Professional To Fix My Water Heater?

Reach out to a professional plumber for a water heater inspection if:

  • The breaker trips more than once.
  • Water is leaking from the unit.
  • Water temperature is inconsistent, or there’s no hot water.
  • Water is rusty, discolored, or has an odor.
  • You smell burning, or the breaker panels are warm to the touch.
  • You have a sudden spike in energy bills.
  • Your unit is more than 10–12 years old.

water heater tripping breaker

All Pro Plumbing: Providing Professional Plumbing Services to Portland and the Surrounding Area

A tripping breaker on a water heater is more than just an inconvenience. It can indicate serious issues. 

Whether your unit needs a one-off check-up or regular maintenance, professional help from the team at All Pro Plumbing offers service you can count on. 

A plumbing company in Hillsboro, our work is licensed, bonded, insured, and comes with a 100% written guarantee. 

Take action today to keep your water heater safe and functional by contacting All Pro Plumbing for a competitive, honest estimate. 

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