Kenmore Dishwasher Fan Replacement Guide — Cost, Signs & DIY Tips

Not all Kenmore dishwashers have a dedicated drying fan, and this is where model number decoding becomes essential. Whirlpool-built Kenmore dishwashers (665-prefix) typically use a heated dry system with a vent that opens passively — there is no fan motor. LG-built Kenmore Elite models (722-prefix) often include an active drying fan that circulates air during the dry cycle. Samsung-built models (630-prefix) may use a combination fan-and-vent system. If your dishes come out wet and you are considering a fan replacement, confirm your Kenmore actually has one first.

Decode Your Model Number

Find the model number on the rating plate inside the door or on the tub wall:

• 665 — Whirlpool-built: Most use a passive vent with heated dry element, no fan motor. Higher-end 665 models may have a vent fan assembly.
• 722 — LG-built (Kenmore Elite): Active drying fan motor, usually rear wall or door assembly.
• 630 — Samsung-built: Fan-assisted drying on most models.
• 587 — Frigidaire-built: Mix of passive vent and fan-assisted depending on model year.

Signs Your Kenmore Dishwasher Fan Needs Replacement

For models with an active drying fan (722-prefix Elite, some 665-prefix):

• Dishes come out dripping wet despite selecting heated dry
• No airflow sound during the drying phase — you should hear a low hum
• The dry cycle runs its full duration but plastic items remain soaked
• Fan motor rattles or grinds during operation — bearing failure

Symptoms that look like fan failure but are not:

• Plastic items retain droplets — plastic does not hold heat like glass, so some moisture is normal
• Dishes dry unevenly — often a loading pattern issue blocking the vent path
• White film or spots — water hardness issue, not a drying problem

For 665-prefix models without a dedicated fan: Poor drying is more likely the heating element, vent assembly (which opens to release steam), or insufficient rinse aid. Confirm your model has a fan motor before ordering one.

Fan Cost Breakdown

The fan motor is inexpensive. Labor cost comes from accessing it — on LG-based models, the fan sits behind the rear wall of the tub, requiring removal of the rear panel.

How to Replace the Fan

LG-based Kenmore Elite (722-prefix) drying fan:

1. Disconnect power at the breaker
2. Pull the dishwasher out from under the counter (disconnect water supply and drain hose)
3. Remove the rear access panel (6–8 Phillips screws)
4. Locate the fan motor in the upper rear area of the tub
5. Disconnect the 2-pin electrical connector
6. Remove 2–3 mounting screws securing the fan housing
7. Install the new fan in the same orientation, reconnect, reassemble
8. Run a heated dry cycle and confirm airflow

Whirlpool-based (665-prefix) vent assembly:

1. Disconnect power at the breaker
2. Open the door and locate the vent assembly at the top of the inner door or front-top of the tub
3. Remove inner door panel screws (Torx T20)
4. The vent may include a wax motor actuator — if this failed, it is a separate part
5. Disconnect actuator wiring, remove clips or screws, install new assembly
6. Reassemble and verify the vent opens and closes during a dry cycle

Tools required: Phillips #2, Torx T20 (Whirlpool models), 1/4-inch nut driver, flashlight, pliers.

When to DIY vs. Call a Professional

• Vent assembly swap (665-prefix): Beginner-friendly, 30–45 minutes.
• Fan motor swap (722-prefix): Moderate. Requires pulling the dishwasher out and rear panel removal. 45–75 minutes.
• Call a professional if: You cannot confirm your model has a drying fan, or wet dishes are accompanied by error codes suggesting a broader electrical issue.

How Long Does a Kenmore Dishwasher Fan Last?

• LG-built fan motors: 8–12 years. Simple, reliable motors that fail from moisture exposure to windings.
• Whirlpool vent assemblies: Wax motor actuator is the weak link, lasting 6–10 years.

Maintenance Tips to Extend Fan and Drying Performance

• Use rinse aid consistently — breaks water surface tension and dramatically improves drying
• Unload the bottom rack first so water pooled on upper items does not drip onto dry dishes
• Open the door slightly after the cycle to let steam escape naturally
• Check the vent opening yearly for mineral deposits
• Clean the fan impeller annually on fan-equipped models — food vapor condenses on blades

Kenmore Dishwasher Drying Systems by Platform

Whirlpool-based (665-prefix): Most use condensation drying with the stainless steel tub acting as the cool surface. Some models include a vent fan that assists drying by pushing moist air out through a door or top vent. Check for a vent opening along the top edge of the inner door — if there is no vent, your model uses condensation drying only and poor drying performance is caused by rinse aid depletion or water temperature, not a fan.

LG-based (722-prefix Kenmore Elite): These may use a hybrid drying system with both a condensation mechanism and a fan. The fan location and access procedure differ from Whirlpool-based models.

Diagnosing Poor Drying Without a Fan

Many Kenmore dishwashers do not have a dedicated drying fan — they rely on condensation or heated drying without forced airflow. If your dishes come out wet, check these causes before looking for a fan component:

1. Rinse aid dispenser empty — this is the number one cause of wet dishes in fan-less dishwashers. Rinse aid lowers water surface tension so water sheets off dishes instead of forming droplets.
2. Water temperature too low — incoming water should be at least 120 degrees F. Run the hot water faucet nearest the dishwasher until hot before starting a cycle.
3. Plastic items on the bottom rack — plastic retains water and does not benefit from condensation drying. Load plastic on the top rack.
4. Heating element failure — the heating element heats the final rinse water. A failed element reduces drying effectiveness dramatically.

Vent Fan Replacement (If Equipped)

If your Kenmore dishwasher does have a vent fan, it is typically a small motor-driven blower near the vent opening. Replacement requires removing the inner door panel (8-10 Torx T20 screws on Whirlpool-based models) or the top panel to access the fan motor. Disconnect the wire connector, remove mounting screws, and swap the motor. Cost: $25-$65 for the motor plus $80-$150 for professional labor.

The Tissue Test

To check if your vent fan is working (on models that have one), hold a thin tissue or piece of paper near the vent opening during the Heated Dry phase. The tissue should flutter from airflow if the fan is operating. No movement means the fan motor has failed or the vent louver is stuck closed.

FAQ

Does my Kenmore dishwasher have a drying fan?

LG-built Kenmore Elite (722-prefix) typically have an active fan. Whirlpool-built (665-prefix) usually rely on heated dry and passive vent — no fan motor. Check your model's parts diagram at searspartsdirect.com.

Why are my dishes wet after the dry cycle?

Start with rinse aid — the single biggest drying factor. Then check whether the vent opens during drying. For fan-equipped models, listen for the motor hum. Wet plastics with dry glass is normal behavior.

How much does a Kenmore Dishwasher Fan replacement cost?

DIY: $20–$75. Professional: adds $80–$150 in labor. Vent assembly replacements (Whirlpool) cost less than fan motor replacements (LG).

Can a Kenmore dishwasher work without the drying fan?

Yes — wash and rinse functions are completely independent. Dishes will be clean but wet. Many homeowners live with a broken fan without realizing it.

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