Frigidaire Dishwasher Heating Element Replacement Guide — Cost, Signs & DIY Tips

Frigidaire dishwashers use an exposed calrod heating element at the bottom of the tub that serves a dual purpose: raising wash water temperature during the wash cycle and providing radiant heat during the drying phase. The element is a U-shaped or circular metal rod visible inside the tub, with its electrical terminals passing through the tub floor and accessible from underneath after removing the kick panel.

How the Frigidaire Heating Element Works

The calrod element is essentially a resistive wire inside a metal sheath, insulated by magnesium oxide powder. When the control board energizes the heater relay, 120V flows through the element, generating heat. During the wash cycle, the element heats water from the household supply temperature (typically 120°F) to the target wash temperature (140–155°F). During the dry cycle, it provides radiant heat to evaporate moisture from dishes.

Frigidaire uses a relatively low-wattage element (approximately 500W on most models) compared to some competitors. This means heating is slower but gentler — less thermal shock to the tub and gaskets.

Why Frigidaire Heating Elements Fail

• Mineral scale buildup — hard water deposits insulate the element surface, causing it to overheat locally. The sheath develops hotspots, and eventually the internal wire melts at the hotspot
• Calrod sheath corrosion — the metal sheath corrodes over years of exposure to hot detergent water. Once the sheath develops a pinhole, water reaches the magnesium oxide insulation, which absorbs moisture and creates a ground fault. The GFCI or hi-limit thermostat trips
• Thermal cycling fatigue — every wash/dry cycle heats and cools the element. After thousands of cycles (8–12 years), the internal wire develops micro-cracks from thermal expansion and eventually opens

Symptoms of Heating Element Failure

• Dishes not fully dry after the drying phase — the element is not producing heat during the dry cycle. Standard Frigidaire models rely entirely on this element for drying (no fan). Gallery models with MaxBoost also use a fan, but the element is still the primary heat source
• Water not hot enough — detergent not dissolving — detergent pods remain partially intact, or powder clumps on the tub floor. The element is not boosting water temperature during the wash phase
• GFCI breaker tripping — a corroded element sheath can create a ground fault. If your Frigidaire dishwasher trips the GFCI breaker when it reaches the heating phase, the element sheath has likely developed a pinhole
• Hi-limit thermostat tripping — if the thermostat opens and the dishwasher stops mid-cycle without an error code, a shorted element that is pulling excessive current may be the cause. Test both the element and thermostat
• Visible damage — look inside the tub at the bottom. A cracked, blistered, or discolored element needs replacement

Testing Before Replacement

Disconnect power at the breaker. Access the element terminals from underneath (remove the kick panel).

1. Disconnect one wire from the element terminal
2. Set multimeter to resistance (ohms). Touch probes to both element terminals
3. A good Frigidaire dishwasher element reads approximately 15–30 ohms (varies by wattage rating)
4. An open element reads infinite resistance (OL on multimeter) — the internal wire is broken
5. Test for ground fault: one probe on a terminal, other probe on the metal sheath. Any continuity means a ground fault — replace immediately

Heating Element Cost

Replacement Procedure

1. Disconnect power at the breaker. Verify with a non-contact tester.
2. Remove the bottom kick panel (2 Phillips screws + spring clips).
3. Locate the element terminals — two metal studs protruding through the tub floor, each with a wire connector and a lock nut.
4. Photograph the wire connections and disconnect the wires from both terminals.
5. Remove the lock nuts from both terminals using a 3/8-inch wrench or nut driver. These nuts are brass and may be corroded — apply penetrating oil if they resist turning. Do not force them, or you risk cracking the terminal insulator.
6. From inside the tub, lift the element out. It may resist slightly as the rubber terminal grommets pull through the tub floor holes.
7. Clean the terminal holes in the tub floor. Remove any old grommet material or mineral deposits.
8. Install the new element. Feed the terminals down through the tub floor holes from inside the tub. The element should sit flat at the tub bottom without touching the filter housing.
9. From underneath, slide the new grommets (included with OEM elements) onto the terminals, thread on the lock nuts, and hand-tighten. Then snug with a wrench — do not overtighten, as the porcelain insulator can crack.
10. Reconnect the wires to the correct terminals (reference your photo).
11. Reinstall the kick panel. Restore power.
12. Run a complete wash cycle and verify the element heats (open the door during the wash phase — water should be noticeably hot) and dries (dishes should be dry at cycle end).

Tools: Phillips #2, 3/8-inch wrench or nut driver, multimeter, non-contact voltage tester. Time: 30–45 minutes.

The Hi-Limit Thermostat Connection

The hi-limit thermostat is a bi-metal disc mounted near the heating element underneath the tub. It is a safety device that cuts power to the element if water temperature exceeds 180–200°F. When replacing the heating element, always test the hi-limit thermostat too — they often fail together, and a bad thermostat can prevent a new element from heating.

Test the thermostat with a multimeter: it should show continuity at room temperature (closed circuit). If it reads open, it has tripped and may be permanently opened (non-resettable type) — replace it alongside the element. The thermostat costs $5–$15 and takes 2 minutes to swap.

Part Lifespan

Heating elements last 8–12 years. Hard water significantly shortens lifespan due to scale accumulation. If you have hard water (visible white deposits on glassware), using a rinse aid helps reduce scale on both dishes and the element.

FAQ

Why won't my Frigidaire dishwasher dry dishes?

Test the heating element with a multimeter (15-30 ohms is normal, infinite = failed). Standard models rely entirely on this element for drying.

Can a bad heating element trip my GFCI breaker?

Yes. A corroded element sheath creates a ground fault that trips GFCI protection. Test element-to-sheath with a multimeter — any continuity means a ground fault.

Do I need to replace the thermostat with the heating element?

Not always, but test it while you have access. If the thermostat reads open circuit at room temperature, replace it ($5-$15). They often fail together.

How do I access the Frigidaire dishwasher heating element?

The element terminals are underneath the tub behind the kick panel. The element itself lifts out from inside the tub after removing the terminal lock nuts from below.

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