If your dishwasher is not cleaning well or dishes come out cold and wet, there is a good chance the heating element is not working. The heating element is a key part of most dishwashers. It heats water for washing and dries dishes at the end. When it fails, your dishwasher cannot clean or dry as it should. Many people call a repair person right away, but you can often check the heating element yourself. With some basic tools and careful steps, you can save money and learn more about how your dishwasher works.
In this guide, you will learn how to check the heating element in your dishwasher, even if you are not an expert. You will get clear steps, safety advice, common mistakes to avoid, and tips for both older and newer machines.
Whether you want to confirm a problem before calling a repair service or you enjoy fixing things yourself, this article gives you everything you need to know.
What Is A Dishwasher Heating Element?
The heating element in a dishwasher is a metal coil, usually at the bottom of the tub. Its job is to heat the water to high temperatures—often 120-160°F (49-71°C). This hot water helps remove grease and food from dishes. The element also heats the air inside the dishwasher during the drying cycle, so your dishes come out dry and ready to use. Some newer dishwashers use a hidden or flow-through heater, but most common models use a visible coil.
A faulty heating element can lead to several problems:
- Dishes are not clean, especially greasy items.
- Dishes come out wet or with water spots.
- Water inside the dishwasher is not hot.
- The dishwasher takes longer than normal to finish.
Understanding how the heating element works helps you know why testing it is important.
Signs Your Dishwasher Heating Element May Be Faulty
Before you test the heating element, look for signs that it may not be working. Sometimes, the problem is not the element itself, but something else. Here are common warning signs:
1. Cold Dishes After Cycle
If you touch your dishes right after a cycle and they are cold and wet, the heating element may not be working.
2. Water Is Not Steaming Hot
When you open the door mid-cycle, do you see steam? If not, the water is not reaching the right temperature.
3. Soap Not Dissolving
If you use soap pods or powder and find undissolved soap, this can mean the water is not hot enough.
4. Poor Cleaning Performance
Greasy or dirty dishes after a cycle can mean the water is not hot, which points to a heating issue.
5. Longer Cycle Times
Some dishwashers try to heat water for longer if the element is weak, causing longer cycles.
6. Error Codes Or Lights
Newer dishwashers sometimes show an error code or light when there is a heating problem.
Many of these signs can also be caused by other problems, like a broken thermostat or weak water pressure. That’s why testing the heating element directly is important.
Tools And Safety Precautions
Before you start, gather the right tools. This helps you work safely and avoid damaging your dishwasher.
Tools Needed
- Multimeter (digital or analog): For checking continuity and resistance.
- Screwdriver (usually Phillips or flat-head): To remove access panels.
- Pliers: For removing connectors.
- Towel or tray: To catch any water that leaks out.
- Flashlight: To see inside dark or hidden spaces.
- Owner’s manual: For model-specific guidance.
Safety Precautions
Checking a heating element involves electricity. Follow these safety rules:
- Unplug the dishwasher or turn off power at the circuit breaker.
- Turn off water supply if you plan to disconnect hoses.
- Work in a dry area—water and electricity are dangerous together.
- Wear insulated gloves if you have them, especially when handling wires.
- Do not touch electrical parts with wet hands.
Many people forget to unplug the machine, which is a serious safety mistake. Always double-check before you start.
Where To Find The Heating Element In Your Dishwasher
The location of the heating element depends on your dishwasher model. Most common dishwashers have a visible coil at the bottom of the tub. Some newer or European-style dishwashers have hidden elements.
Common Locations
- Visible Coil (Most Common)
- Shaped like a thick metal loop or U.
- Sits on the bottom, just below the lower rack.
- Hidden or Flow-Through Element
- Located under the tub, not visible from inside.
- Often found in newer or high-end models.
- Integrated in Sump or Pump
- Some dishwashers heat water as it circulates.
- You may need to remove the lower panel to access.
If you are not sure, check your owner’s manual. You can also search your model number online to find diagrams.
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Step-by-step Guide: How To Check The Heating Element
Testing the heating element is not hard, but it requires careful steps. Here is how to do it safely and correctly.
1. Disconnect Power And Water
- Unplug the dishwasher or turn off the circuit breaker. Never skip this step.
- If the element is under the dishwasher, also turn off the water supply.
2. Access The Heating Element
- Open the dishwasher door and remove the lower rack.
- For a visible coil, you will see the element at the bottom.
- For hidden elements, remove the kickplate or lower access panel using a screwdriver.
- Use a flashlight if the area is dark.
3. Visually Inspect The Element
Before testing with a multimeter, look for obvious signs of damage:
- Burn marks or black spots
- Cracks or breaks in the coil
- Corrosion or pitting
- Blisters or bulges
If you see any of these, the element is likely bad and should be replaced.
4. Disconnect The Heating Element
- Find the wiring connectors attached to each end of the element.
- Carefully pull off the wires using pliers (do not pull on the wires themselves).
- Note which wire goes where, or take a picture for reference.
5. Test For Continuity With A Multimeter
A working heating element should have electrical continuity. Here’s how to check:
- Set your multimeter to the “ohms” or resistance setting (Ω).
- Touch one probe to each terminal of the element.
- A good element will show a reading, usually between 10-50 ohms (check your manual for exact range).
- If the multimeter reads “infinity” or “OL” (open line), the element is broken.
Example Reading
| Multimeter Reading | What It Means |
|---|---|
| 10 – 50 ohms | Element is working |
| 0 ohms | Short circuit (bad) |
| OL/infinity | Broken element (bad) |
6. Check For Short To Ground
Sometimes, the element may short to the metal body, causing breaker trips.
- Keep one probe on a terminal, and touch the other to a metal part of the dishwasher frame.
- The reading should be “OL” or infinity. If it shows low resistance, the element is shorted and must be replaced.
7. Reassemble And Test
- Reattach the wires to the element.
- Replace any panels or covers.
- Restore power and water.
- Run a short cycle to see if the problem is fixed.
Understanding Your Test Results
Knowing what your test results mean helps you decide what to do next.
Good Reading
- If your element shows the right resistance, it is not broken.
- If you still have problems, check the thermostat or control board.
Bad Reading
- No continuity or a short means the element is faulty.
- Replace the element with a part that matches your model.
Element Looks Fine But Dishwasher Still Fails
- Sometimes, the problem is not the element but a relay, timer, or sensor.
- Consider calling a professional if you are unsure.
Common Mistakes When Checking Heating Elements
Many beginners make small but costly errors when testing their dishwasher’s heating element. Avoid these common mistakes:
1. Not Unplugging The Dishwasher
This is a safety risk and can cause electric shock.
2. Testing Without Removing Wires
Other components can affect your readings if the wires are still attached.
3. Using The Wrong Multimeter Setting
Set to the correct “ohms” scale; otherwise, your test may not work.
4. Not Checking For Shorts
Failing to check for ground faults can miss hidden problems.
5. Mixing Up Wires
Always note which wire goes to which terminal.
6. Ignoring Visual Clues
Sometimes, a burnt or blistered element is obvious—no need for further testing.
7. Replacing Without Matching Part
Always use a replacement with the same voltage and wattage rating.
How Heating Element Failure Impacts Dishwasher Performance
A faulty heating element affects more than just the temperature. Here are some real-world impacts:
- Poor Cleaning: Grease and food are not removed.
- Wet Dishes: No heat means no drying.
- Cloudy Glasses: Hard water is not heated to dissolve minerals.
- Soap Residue: Detergent does not activate fully.
- Potential Mold Growth: Standing water stays cool and damp.
In some dishwashers, a failed element may cause the machine to stop mid-cycle. Others finish but leave dishes dirty or wet. Knowing these impacts helps you spot heating problems early.
Replacing The Heating Element: What To Expect
If your heating element fails the test, you need to replace it. Here’s what to know before you start.
Replacement Steps (general Overview)
1. Order The Right Part
Use your model number to buy the correct element.
2. Turn Off Power And Water
Always work safely.
3. Remove Lower Rack And Access Panels
For hidden elements, you may need to tilt or pull out the dishwasher.
4. Disconnect Old Element
Remove wires and any mounting hardware.
5. Install New Element
Attach wires securely and make sure it sits flat.
6. Reassemble And Test
Run a cycle to confirm the repair.
How Long Does It Take?
Most people can replace a visible heating element in 30-60 minutes. Hidden elements or European models may take longer.
Professional Vs. Diy
If you are not comfortable with wiring or moving the dishwasher, it’s smart to call a technician. The cost for a professional repair is usually $100–$250, depending on your location and machine type.
How To Prolong The Life Of Your Dishwasher Heating Element
A heating element can last 8–15 years, but some habits help it last longer:
1. Run The Dishwasher Regularly
This prevents corrosion and keeps parts working.
2. Use Dishwasher-safe Detergent
Harsh powders can wear out the coating on the element.
3. Don’t Overload The Machine
Overloading can block heat flow and put stress on the element.
4. Check Water Hardness
Hard water causes mineral buildup. Use a water softener if needed.
5. Inspect Regularly
Look for signs of wear, especially if your machine is old.
How To Tell If The Problem Is Not The Heating Element
Sometimes, the heating element is fine, but other parts are faulty. Here’s how to tell:
- Thermostat Failure: If the thermostat is broken, it can stop the element from heating.
- Control Board Issue: Modern dishwashers use a control board to send power to the element.
- Door Latch Problems: If the door sensor doesn’t work, the heating cycle may not start.
- Low Water Temperature: If your home’s hot water is set too low, the dishwasher can’t heat it enough.
Troubleshooting Table
Here’s a quick guide to help you decide if the heating element is really the problem:
| Symptom | Likely Cause | Test/Action |
|---|---|---|
| Dishes cold & wet | Heating element or thermostat | Test element first |
| No power to element | Control board or relay | Check with voltmeter |
| Cycle stops early | Door latch or sensor | Check door and latch |
| Soap residue | Low water temp or element | Test element and water temp |
If you find the heating element is fine, focus on these other parts.
Special Tips For Different Dishwasher Brands
Not all dishwashers are the same. Here are some brand-specific insights:
Whirlpool, Kitchenaid, Maytag
- Most use a visible coil.
- Replacement elements are widely available.
- Heating relay on the control board can also fail.
Bosch, Miele, European Brands
- Use hidden or flow-through elements.
- Testing requires removing the dishwasher from the cabinet.
- Repairs can be more complex—consider professional help.
Ge, Frigidaire, Samsung
- Many use a visible coil but have unique wiring connectors.
- Some models use a high-limit thermostat that can shut off the element.
Non-obvious insight: Some brands have a safety feature that disables the heating element if water is not detected. If your machine is dry or not filling, the element will not turn on, even if it is working.
How To Test A Dishwasher Heating Element Without A Multimeter
Not everyone owns a multimeter. Here is an alternative, though it is less accurate.
The “hot Water Test”
- Run a cycle and stop the dishwasher just after the wash phase.
- Carefully open the door and check if there is steam.
- Touch the element (carefully, it can be hot! )—it should feel warm.
- If the element is cold, it may not be working.
Warning: This test is less reliable. A failing thermostat or control board can also cause these symptoms.
When To Call A Professional
Testing the heating element is a good DIY project, but sometimes you need expert help. Call a professional if:
- You see signs of electrical burning or melting.
- The dishwasher trips your breaker.
- You are not comfortable with electrical repairs.
- The element is hard to access or replace.
A good technician can diagnose and fix the problem safely.
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How Much Does It Cost To Replace A Dishwasher Heating Element?
Costs vary based on brand, model, and whether you do it yourself.
Typical Costs
| Part/Service | DIY Cost | Professional Cost |
|---|---|---|
| Heating Element | $30 – $80 | $100 – $250 (with labor) |
| Thermostat | $15 – $40 | $80 – $180 (with labor) |
| Control Board | $50 – $200 | $180 – $400 (with labor) |
Pro tip: Always check your warranty before buying parts or hiring help.
Environmental Impact Of Faulty Heating Elements
Most people do not realize that a broken heating element can waste energy and water:
- Dishes need to be rewashed, using more water and energy.
- Longer cycles use more electricity.
- Hand drying with towels can spread germs.
Fixing your heating element saves resources and keeps your dishwasher running efficiently.
How To Find The Right Replacement Heating Element
When buying a new heating element, check:
- Model Number: Find this on a sticker inside the door or on the frame.
- Voltage and Wattage: Match the ratings printed on the old element.
- Shape and Size: Make sure the new part fits your machine.
Non-obvious insight: Some online sellers list universal elements, but these do not fit all machines. Always confirm compatibility.
A reliable source for parts and diagrams is the Repair Clinic.
Preventing Future Heating Element Problems
You can reduce the risk of heating element failure with a few good habits:
- Run hot water at the sink before starting the dishwasher. This primes the machine with hot water.
- Use a rinse aid to help with drying and reduce buildup on the element.
- Clean the filter regularly to avoid food and grease buildup.
- Descale your dishwasher every few months if you have hard water.
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Frequently Asked Questions
How Do I Know If My Dishwasher Heating Element Is Working?
If your dishes are clean, dry, and warm after a cycle, the element is likely working. The best way to be sure is to test it with a multimeter for continuity.
Can I Use My Dishwasher If The Heating Element Is Broken?
You can, but cleaning and drying will not be as good. Greasy dishes and water spots are common. It is better to fix the problem soon.
How Long Does A Dishwasher Heating Element Last?
Most last 8–15 years with normal use. Hard water, overloading, or harsh detergents can shorten lifespan.
Is It Safe To Replace A Heating Element Myself?
If you follow safety steps—unplugging the machine, turning off water, and using the right tools—it is safe for most people. If unsure, call a professional.
What Else Could Cause Dishes To Come Out Cold And Wet?
Other causes include a bad thermostat, faulty control board, low water temperature, or a broken door sensor. Test the heating element first, then check these parts.
A dishwasher with a working heating element saves time, energy, and gives you sparkling clean dishes. Taking a few careful steps can help you diagnose and fix most heating element problems yourself. If you’re ever in doubt, don’t hesitate to ask a professional for help.
Your dishwasher—and your dishes—will thank you.