Rarely an emergency

Kenmore Water Heater: Won't Start or Turn On

On gas units, typically a thermocouple or igniter fault; on electric, a tripped reset or failed element. Upload a photo of your Kenmore Water Heater and fixRAgent's AI pinpoints the exact failed part.

Show us the water heater.

Snap a photo — see what it is, how urgent, who to call. One photo of the problem. fixRAgent reads it and gives you a Triage Profile.

The top of a gas water heater: rust and debris around the flue connection and the water lines
TODAY3 of 3 reads agreed
Gas water heater
Call a plumber
A real Triage Profile from this photo, read by fixRAgent on 30 Sep 2026. Open it ›

Or start with a sentence

In the next five minutes

Safe first steps, before the call. Nothing here needs a tool.

  1. If you smell gas, a carbon monoxide alarm sounds, or anyone feels dizzy or sick: don’t touch any switch or plug, leave and get everyone out, then call 911 or the gas company from outside.

  2. No gas smell? Turn the water heater’s gas control knob to OFF if it’s gas, or switch off its breaker if it’s electric.

  3. Take a photo of the tank, the floor and its label, without opening anything.

Everything else about this problem

Is it an emergency?

Is a Kenmore water heater that won't start an emergency?

Rarely an emergency. Check its breaker and, on a gas unit, the display or the label by the gas control. Stop and call a pro if it keeps tripping the breaker, smells like burning, or you smell gas.

Symptoms & causes

If your Kenmore water heater isn't producing hot water or shows no signs of power, the issue likely stems from a lack of electrical supply or a gas ignition problem. For electric models, common culprits include a tripped circuit breaker, a faulty thermostat, or a burned-out heating element preventing the unit from energizing. Gas models often fail to start due to a extinguished pilot light, a malfunctioning thermocouple, or a defective gas control valve that prevents fuel flow to the burner.

Tools & parts

You will need basic tools like a multimeter for testing electrical continuity and voltage, along with a screwdriver set for accessing panels. For electric Kenmore water heaters, replacement parts such as a new heating element, an upper or lower thermostat, or a high-limit reset switch might be necessary. Gas models may require a new thermocouple, a igniter assembly, or potentially a gas control valve to restore operation.

Safety first

Always begin by shutting off the power to electric Kenmore water heaters at the circuit breaker or turning off the gas supply valve for gas models to prevent electrocution or gas leaks. Ensure proper ventilation when working on gas appliances to avoid carbon monoxide buildup, which is odorless and deadly. Be cautious of hot water and steam, as the tank's contents can cause severe burns even when the unit is off.

When to call a pro

You should call a professional technician if you suspect a gas leak, as this requires specialized tools and expertise to safely track down and repair the gas control valve or supply lines. Complex electrical issues, such as problems with the main electrical panel or internal wiring that go beyond simple component replacement, also warrant professional intervention. Furthermore, if your Kenmore water heater is leaking from the tank itself or the pressure relief valve is constantly discharging, a professional can assess the structural integrity and recommend appropriate solutions.

Questions people ask

Why is my Kenmore electric water heater not heating?

Your Kenmore electric water heater might not be heating due to a tripped circuit breaker, a faulty high-limit reset switch, or a defective heating element. Test the breaker first, then check the reset button on the thermostat panel.

What if my Kenmore gas water heater won't light?

If your Kenmore gas water heater won't light, the pilot light may be out, or the thermocouple could be faulty, failing to sense the pilot flame. Ensure the gas supply valve is open and attempt to relight the pilot according to your owner's manual instructions.

How do I reset my Kenmore water heater?

To reset your Kenmore electric water heater, first turn off the power at the circuit breaker, then locate and press the red reset button usually found on the upper thermostat. For gas models, you typically need to relight the pilot light after ensuring the gas supply is on.

Related problems
fixRAgent

Find The Broken Part

Upload a photo of your Kenmore Water Heater or its model number tag. The Triage Profile says what it is, how urgent it is, and who to call.

Get started