Bosch Washer Dryer: not heating

Possible Causes

Blown thermal fuse

How to Identify: Dryer tumbles normally but no heating; test continuity with multimeter shows open circuit.

Part: Thermal fuse

Faulty heating element (electric models)

How to Identify: No heat despite power and airflow; multimeter shows no continuity on heating coil.

Part: Heating element assembly

Faulty thermostat or temperature sensor

How to Identify: Dryer runs without heat; thermostat tests show lack of proper continuity or temperature regulation.

Part: Cycling thermostat / NTC sensor

Clogged vent / restricted airflow causing safety cutoff

How to Identify: Excess lint, restricted airflow, overheating followed by no heat state.

Part: Dryer vent system or lint filter

Power supply issue (electric models)

How to Identify: Dryer tumbles but no heat; one leg of 240 V may be missing; breaker position mid‑trip.

Part: Circuit breaker / power cord connection

DIY Solutions

Clean lint filter and vents

Easy 10–20 minutes

Tools Needed: vacuum or vent brush

1. Remove and clean the lint filter.
2. Disconnect dryer and clean external and internal vent ducts with brush or vacuum.
3. Ensure exterior vent flap opens freely.

⚠️ Safety First: Disconnect power before accessing vents

Test and replace thermal fuse

Moderate 30–60 minutes

Tools Needed: screwdriver set, multimeter

1. Unplug dryer and access the rear panel.
2. Locate thermal fuse on blower housing or heat duct.
3. Test continuity with multimeter; if open replace with exact part.
4. Reassemble and test dryer heat function.

⚠️ Safety First: Ensure power is off before opening dryer

Test and replace heating element

Advanced 60–90 minutes

Tools Needed: screwdrivers, multimeter

1. Disconnect power and remove back panel.
2. Locate heating element assembly.
3. Test element with multimeter for continuity; replace if open.
4. Reassemble dryer and verify heat.

⚠️ Safety First: High heat element replacement requires caution around sharp metal

Next step

Choose the next step for not heating

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Thermal Fuse

A safety device that cuts off power to the appliance if it starts to overheat.

Typical part-only price

$10 - $20

DIY difficulty

Easy

Estimated time

10-20 mins

Optional: enter your model number

Apply

Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Heating Element

Heats the water or air inside the appliance to the required temperature.

$40 - $95 · Medium · 30-45 mins

Check fit & price

Possible related component

Thermostat

Regulates temperature by turning the heating or cooling system on or off.

$15 - $40 · Easy · 15-30 mins

Check fit & price

Possible related component

Thermistor

Measures precise temperature changes and sends resistance feedback to the control board.

$15 - $35 · Easy · 15-30 mins

Check fit & price

Model number required

Model-compatible Washer Dryer parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

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Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Dryer Vent Cleaning Kit

Helps remove routine lint buildup from an accessible dryer vent path. It does not diagnose or repair an E-code or failed component.

View maintenance supply

Maintenance supply

Lint Trap Cleaning Brush

A narrow brush for routine cleaning around an accessible lint screen and housing.

View maintenance supply

Maintenance supply

Dryer Vent Hose Kit

A replacement exhaust duct option for visibly crushed or damaged external venting. Check diameter, length, local code, and installation clearance.

View maintenance supply

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Professional Repairs

Replace thermostat or temperature sensor

Estimated Cost: $50–$150

Electrical power system diagnosis

Estimated Cost: $100–$250

When to Call a Professional

If internal components test is inconclusive and parts replacement fails

If burning smell or electrical arcing occurs

If you are not comfortable working with internal electrical components

Preventive Maintenance

• Clean lint filter: Airflow restriction and related heating cutoff
  Frequency: after every cycle
• Clean dryer vent system: Vent blockage causing overheat cut‑off and no heat symptom
  Frequency: annually

Frequently Asked Questions

Why is my Bosch Washer Dryer not heating?

Common causes include a blown thermal fuse, faulty heating element, or clogged vents.

How do I fix Bosch Washer Dryer not heating myself?

Start by cleaning lint filters and vents, then test and replace the thermal fuse if needed.

How much does it cost to fix not heating?

Professional repairs may cost between $50 and $250 depending on the issue.

When should I call a technician for not heating?

Call a technician if DIY solutions don't resolve the issue or if you're unsure about repairs.

References & Sources

• Bosch Dryer Not Getting Warm Official

Common Issues Reported by Users

• Faulty heating element (3 mentions)
• Overloading triggering safety switches (1 mentions)

User Suggested Solutions

1. Check and replace the heating element if necessary

2. Reset safety switches by removing the top of the unit

Community Discussions

heat from dryer exhausted into house

The heat from the dryer does not enter the house; it stays inside the machine.

Pro needed View on Reddit →

overloading on the dryer program can result in the safety switches being triggered

Resetting the safety switches by removing the top of the unit.

DIY View on Reddit →

no longer drying

Check the heating element and temperature limiters; consider replacing the heating element if necessary.

DIY View on Reddit →

heating element faulty, only gets lukewarm when drying

The heating elements for the washer and dryer are different; the issue may be due to a blocked fan or passage.

DIY View on Reddit →

Source: Reddit r/appliancerepair