Los Angeles · Beverly Hills · Santa Monica · West Hollywood · Culver City
Bosch Dryer Repair
Factory-trained service on Bosch compact 24" ventless dryers, WTG condenser (300/500 Series) and WTW heat-pump (500/800 Series). Complete E-code diagnostic (E01-E42, E100 evaporator, DR drainage, F3E2 thermistor). NTC sensors, heating elements, heat-pump compressors, drum belts, door latches. 120V operation, no vent required, condo-friendly.
Bosch Dryer Repair
Across Southern California
About this service
The Bosch ventless dryer, why condos choose it.
Bosch dominates the Southern California compact ventless dryer market for one structural reason: no external vent required. Traditional US dryers need a 4-inch duct routed through an exterior wall, impossible or expensive to retrofit in most condos, lofts, older single-family homes, and apartment buildings across LA, Newport Beach, Long Beach, downtown Riverside, and high-rise Irvine. Bosch's ventless architecture collects moisture inside the machine (either condensing it into a removable water tank or draining through condensate line), eliminating the vent requirement entirely. Combined with 120V operation (standard outlet, no 240V dryer circuit needed), this opens laundry installation in closets, alcoves, and spaces where a full-size US dryer simply wouldn't work.
Bosch offers two ventless architectures, and the distinction matters for service. WTG condenser dryers (300/500 Series) use a conventional electric heating element, cheaper to buy, cheaper to repair when the element fails. WTW heat-pump dryers (500/800 Series) use a closed-loop refrigerant system, roughly 50% less energy consumption, gentler on clothes (lower dry temperatures), longer cycle times, significantly more expensive when the heat-pump compressor fails but much rarer failure. Knowing which architecture you have changes the diagnostic path completely.
Most of our Bosch dryer calls are 4-to-12-year-old units stacked on top of matching Bosch washers in condo closets across our service area, Santa Monica, Brentwood, West Hollywood, Culver City, Westwood, Mid-Wilshire on the LA side; Newport Beach high-rises, Marina del Rey waterfront, and Irvine apartments in OC; downtown Long Beach and Anaheim towers; and Westlake Village ADU/casita builds plus IE attached-home corridors (Rancho Cucamonga, Murrieta, Temecula). Common issues: door latch wear (plastic latches snap from heavy loads), moisture sensor drift from detergent residue, lint filter negligence causing overheat shutoffs. Most are maintainable for another 5-8 years with proactive service.
Models we service
Bosch dryer model families
WTW Heat-Pump (800 Series Flagship)
WTW87NH1UC · WTW87NH2UC · WTW87NH8UC · WGA14400UC
Top-tier Bosch compact ventless dryer. Heat-pump refrigeration system provides 50% energy savings vs condenser, gentle on delicate fabrics (lower max temp), Home Connect WiFi, all cycle options. Quieter than WTG condenser (no loud heating element cycling). Most common in current luxury condo builds 2020+ across our service area. Heat-pump is expensive to replace if compressor fails ($685-$985), but compressor failure is rare.
WTW Heat-Pump (500 Series)
WTW85NH1UC · WTG86402UC · WTW85NHBUC
500 Series heat-pump with reduced feature set vs 800. Same heat-pump architecture, fewer programmed cycles, no Home Connect on older models, 2020+ models have WiFi. Mid-tier choice when buyer wanted heat-pump energy efficiency without the 800 Series price premium. Same service approach as 800 Series, same compressor, same evaporator, same NTC sensor family.
WTG Condenser (300/500 Series)
WTG86400UC · WTG86401UC · WTG86402UC · WTG87402UC
Traditional electric-heating condenser dryers. Cheaper at purchase than heat-pump, faster dry cycles, higher energy consumption. Service economics favorable, heating element is $185-$285 (vs $685-$985 heat-pump compressor). 300 Series basic programs; 500 Series adds Sanitize and Allergen cycles. Common in condos across our service area where buyer prioritized lower acquisition cost over long-term energy savings.
Nexxt Legacy (Pre-2015)
WTMC3321US · WTMC5321UC · WTXD5321US · WTMC6321UC
Bosch Nexxt line, pre-2015 compact 24" dryers. Many still in service in Southern California condos built 2005-2014, Wilshire Corridor, Newport Beach, Long Beach towers, Marina del Rey. Mostly condenser (no heat-pump in this generation). Parts availability still good for common failures: door latch, moisture sensor, NTC thermistor, drum belt, motor brushes. 15+ year old Nexxt units approaching repair-vs-replace decision, we give honest assessment based on cumulative repair cost.
Stacked (with matching washer)
WTW/WTG + WAW/WAT with stacking kit WTZ11400UC
Most LA Bosch dryers are installed stacked on top of a matching Bosch washer using Bosch stacking kit. Service on stacked units requires specific procedure, major dryer repairs (drum belt, support rollers, motor) require either full unit removal from the stack or working from above with limited access. We bring stack-tooling and second technician when needed ($145 flat access/separation add-on when required).
Gas Dryers, We Don't Service
Bosch does not make gas dryers for US market
Bosch's US dryer line is exclusively electric ventless (condenser or heat-pump). If you have a gas Bosch-badged dryer, it's likely a European-spec import (rare). We don't stock parts for gas Bosch units and typically cannot service them. For gas compact 24" dryers, Whirlpool's Duet and Maytag make alternatives, neither with Bosch's ventless architecture.
Model number prefix key: WTW = current-gen heat-pump. WTG = current-gen condenser. WTMC = Nexxt legacy. WTXD = Nexxt legacy premium. WGA = latest-generation 800 Series heat-pump. Second group (e.g. 86400) identifies feature package and year.
Bosch dryer E-code decoder
Common Bosch dryer error codes
Bosch ventless dryers report faults differently across WTG condenser and WTW heat-pump platforms, but the code logic is consistent, the code points to a system, live tests identify the exact component.
| Code | Meaning & diagnostic |
|---|---|
| E01 / E02 | General electronic fault, transient low voltage, stuck relay, or sensor read anomaly at power-on. 5-min power cycle (breaker off) clears most. If persistent: structured check of thermistors, harness, control board. |
| E05 / E37 | NTC temperature sensor fault. Test resistance, should increase as temperature decreases. Replacement $145-$215. |
| E06 | Heating system fault. WTG: heater, relay, or NTC. WTW: compressor, inverter drive, or sensors. Different diagnostic paths per platform. |
| E07 / E38 | Motor control module. $285-$425 replacement. |
| E08 / E09 | Heating element / heater relay. Element $185-$285 (WTG only). Relay board-level, $385-$580. |
| E11 / E12 | Drum motor / motor relay. Drive motor $385-$540, relay within control board. |
| E14 | Lint filter not inserted properly. Check filter seating, free fix if reseated correctly. |
| E15 / E40 | Door lock switch. Test lock continuity. Replacement $125-$185. |
| E17 | Lint screen temperature sensor. Usually harness connector issue from vibration. Reseat first (free); if sensor failed, $145-$215. |
| E18 | Heater NTC thermistor. Test resistance (NTC, increases as temp decreases). Replacement $145-$215. |
| E28 | Sensor plausibility, multiple sensors disagreeing. Wipe moisture sensor bars clean (free fix) first, then harness inspection. |
| E42 | Water tank issue (condenser dryers). Empty tank, verify proper seating, clear tank sensor. |
| E100 | Heat-pump evaporator blocked (2023+ WTW models). Evaporator cleaning $145-$225. |
| DR | Drainage fault causing overheat (ventless units). Empty water tank, clean heat exchanger, test condensate pump. 15-minute shutoff safety feature. |
| F3E2 | Exhaust thermistor shorted, often blocked vent path in condensing chamber, not a sensor failure. Check airflow first (free fix). |
Reset procedure: unplug for 3 minutes minimum to fully discharge control module. Clears transient codes and firmware glitches. If code returns immediately after reset, it's a real hardware fault.
Common failures
The ten things that break on a Bosch dryer
1. Door latch snapped, won't start (#1 call)
Single most common Bosch compact dryer call. Plastic door latch snaps from years of heavy laundry loads pulling on it during opening. Symptoms: door closes physically, but dryer refuses to start, sometimes shows E15 or E40 code, sometimes just does nothing. 90% of 'won't start' complaints are door latch on units 4+ years old. Replacement $125-$185, 30-min job. We often recommend simultaneous door hinge realignment ($85-$145) on 5+ year units because door sag is what stressed the latch in the first place, fixing latch without addressing sag means same failure again in 1-2 years.
2. Moisture sensor drift, wrong cycle times
Metal sensor bars in the drum detect dryness by conductivity between wet clothes and the metal. Over 2-3 years, detergent and fabric softener residue builds a film on these bars that confuses the sensor. Symptoms: cycles stop early with clothes still damp (sensor reads 'dry' incorrectly), OR cycles run indefinitely (sensor reads 'wet' regardless of actual dryness). Free fix: wipe bars with damp cloth + tiny amount of mild dish soap, rinse, dry. Takes 2 minutes. We include this in every maintenance visit. If cleaning doesn't restore proper operation, sensor replacement $125-$185, but that's only needed on 10% of 'moisture sensor' complaints after cleaning.
3. Lint buildup, overheat shutoff / DR / E100
Ventless Bosch dryers have 15-minute overheat shutoff as safety protection. Most common trigger: lint filter clogged (must clean EVERY cycle on ventless, not optional, free fix, 90% of overheat calls resolve here). Second: heat exchanger lint accumulation (access through front panel, clean every 6-12 months WTG, more frequent WTW heavy-use, $95 flat service). Third on WTW heat-pump units: evaporator fin blockage (E100 code, $145-$225 cleaning). Fourth: condensate drainage blocked (DR code, empty tank or clear line). Operating in overheat state damages heating element, heat-pump compressor, and electronic components, stop cycles when overheating is suspected.
4. Idler pulley squeal (high-pitched noise)
High-pitched squeal during operation = idler pulley bearing failure. Idler pulley keeps the drum belt under tension; when bearing fails, belt slips and pulley emits audible squeal. Catching this early is important, operating with a failing idler wears the belt faster and can eventually throw the belt off, ending tumble entirely. Replacement $125-$185, 60-min job accessing through top panel. We recommend belt inspection at same visit, if belt shows wear, replace both together ($225-$345 bundle) to avoid second service call within a year.
5. Rhythmic thumping (support roller flat spots)
Rhythmic thumping or bumping sound = drum support roller flat spots. Bosch drums sit on plastic support rollers; if the dryer sits unused for long periods (vacation homes, second residences common in Malibu and Palisades), rollers can develop flat spots from continuous contact pressure at one point. Replacement as a pair $145-$215, always both because replacing one worn + one new creates wobble. Free preventive tip: run a 10-min Air Fluff cycle monthly on dryers that sit unused, redistributes load on rollers.
6. Drum not turning, belt snapped
Motor runs but drum doesn't rotate = belt snapped or slipped off. On Bosch compacts, belt access is through the top panel (panel removes with two screws at back, slides forward). Belt replacement $125-$185, 60-min job. Check idler pulley during same visit, if pulley seized, it may have caused the belt failure and unaddressed pulley will fail the new belt quickly. Belt + pulley bundle $225-$345.
7. Heating element failure (WTG condenser only)
WTG condenser dryers have a traditional electric heating element. After 6-10 years, element eventually fails (burns open). Symptoms: drum turns, air circulates, but clothes stay cold and wet. E06 or E08 code typical. Element replacement $185-$285, 75-min job. Test adjacent NTC temperature sensor during same visit, if NTC drifted, it may have contributed to element stress (running element too hot). WTW heat-pump dryers DON'T have a conventional heating element, they use the heat-pump compressor for heating, so 'heating element failure' doesn't apply to WTW. Different architecture, different failure modes.
8. Heat-pump compressor failure (WTW only)
Rare but expensive failure on WTW heat-pump dryers. Symptoms: no heat, cycle runs but clothes stay cold, sometimes E06 code with heat-pump-specific sub-code. Compressor replacement $685-$985 plus labor, one of the most expensive Bosch compact laundry repairs. Before quoting compressor, we verify through inverter drive diagnostics and refrigerant pressure testing that compressor is actually the failure, about 15% of suspected compressor failures are actually inverter drive issues at lower cost ($385-$540). On 10+ year old WTW units, we discuss repair-vs-replace economics honestly (compressor at ~$1,000 vs new WTW 500 Series at ~$1,500).
9. NTC thermistor drift, E18 or E37
NTC (Negative Temperature Coefficient) thermistor monitors temperature in the drum or heat exchanger. NTC resistance increases as temperature decreases (opposite of standard resistance). After 7-10 years, thermistor drifts out of calibration. Symptoms: inaccurate temperatures, overheat shutoffs from misreading, or under-heating cycles, E18 (heater NTC) or E37 (different NTC location) codes. Replacement $145-$215. On units showing both E17 and E18, both sensors need replacement (they're in different locations, lint screen and heater housing).
10. Condensate pump / water tank issues (ventless drainage)
Both condenser and heat-pump ventless architectures must handle the water they extract from clothes. Two drainage options: (1) removable water tank (owner empties between cycles, common on compact ventless), (2) condensate hose plumbed to drain (less common, requires plumbing during install). When drainage fails, pump clogged, tank full and not emptied, hose kinked, DR code triggers, cycle stops. Pump replacement $185-$265. Water tank itself $95-$155. Before ordering parts: empty tank (for 50% of DR calls, that's the entire fix).
Southern California context
Why ventless + 120V = the SoCal condo laundry standard
Southern California has specific structural characteristics that make Bosch ventless compact dryers dominate this market region-wide: (1) condo and townhouse construction often doesn't include 4-inch exterior venting paths from laundry closets to outside walls, true across the Wilshire Corridor, Long Beach high-rises, Newport Beach waterfront towers, and downtown Riverside attached-home developments alike; (2) retrofitting exterior vents in existing buildings involves HOA approval, exterior wall modification, and potential building permit requirements, legal and expensive; (3) many condos and apartments from 1990s-2010s across our 5-county service area provide only 120V circuits for laundry, never 240V.
Bosch ventless + 120V solves all three constraints simultaneously. Install in any closet with a standard outlet. No exterior vent. No electrician. No HOA drama. This is why most laundry installations from 2010+ in SoCal condo developments, Westside LA, OC waterfront, Long Beach, Irvine high-rises, and IE attached-home corridors, specified Bosch from the start, and why retrofits of older "washer-only" spaces have usually gone to Bosch or Miele (the only two brands with full ventless + 120V compact lines).
Service in condo installations across our service area has specific considerations. Stacked units in narrow closets limit access, we bring stack-separation tooling and a second technician for major repairs ($145 flat access add-on). Condo HOA rules may restrict service visit hours, we work within your HOA's allowed contractor hours. Parking is often challenging near high-density condo buildings, we dispatch based on building location to minimize that overhead.
Pricing
What Bosch dryer repair usually costs
Diagnostic $89, waived with repair. Labor and parts quoted separately before work starts.
| Repair | Typical range |
|---|---|
| Door latch assembly | $125 – $185 |
| Door hinge realignment | $85 – $145 |
| Door seal / gasket | $125 – $185 |
| Heating element (WTG condenser only) | $185 – $285 |
| Heat-pump compressor (WTW only) | $685 – $985 |
| Heat-pump inverter drive (WTW only) | $385 – $540 |
| NTC temperature sensor | $145 – $215 |
| Thermal fuse | $95 – $155 |
| High limit thermostat | $125 – $185 |
| Drum belt | $125 – $185 |
| Drum support rollers (pair) | $145 – $215 |
| Idler pulley | $125 – $185 |
| Belt + idler pulley bundle | $225 – $345 |
| Condensate pump | $185 – $265 |
| Water tank | $95 – $155 |
| Heat exchanger cleaning (maintenance) | $95 flat |
| Evaporator cleaning (WTW heat-pump, E100) | $145 – $225 |
| Moisture sensor replacement | $125 – $185 |
| Moisture sensor cleaning (included with service) | Free |
| Blower wheel / fan motor | $245 – $345 |
| Drive motor | $385 – $540 |
| Main control board | $385 – $580 |
| Motor control module | $285 – $425 |
| User interface / touchpad | $285 – $425 |
| Stacked unit access / separation add-on | $145 flat |
| Home Connect firmware update | $85 flat |
Where we go
Service areas for Bosch dryer repair
Related services
Related categories we service
Bosch Appliance Repair
Hub page, all Bosch categories across Southern California.
View hub →Bosch Washer Repair
300/500/800 Series compact 24" front-load. Usually paired with Bosch dryer in stacked LA condo configuration.
View washer repair →Miele Dryer Repair
Miele T1 heat-pump ventless 24". Alternative premium-tier option. 10-year motor warranty. Honest ROI comparison on Miele page.
View Miele dryer →Bosch Dishwasher Repair
100/300/500/800/Benchmark. Complete E-code decoder, CrystalDry zeolite, Home Connect diagnostics.
View dishwasher repair →FAQ
Bosch dryer repair, common questions
WTG vs WTW, which do I have?
Check model number. WTG = condenser dryer (electric heating element, cheaper, faster cycles). WTW = heat-pump (refrigerant system, 50% less energy, gentler, longer cycles). Different failure modes and service paths.
DR code / E100, what to do?
Drainage/overheat protection. Stop cycling (damages components). Empty water tank, clean heat exchanger ($95 flat), check condensate pump ($185-$265). E100 specifically = WTW heat-pump evaporator blockage ($145-$225 cleaning).
Dryer won't start, door closed
Plastic door latch snapped (90% of cases). $125-$185 replacement. On 5+ year units we realign hinge simultaneously ($85-$145), sag caused the latch stress.
Clothes damp after cycle / cycle time weird
Moisture sensor drift, detergent residue on metal bars in drum. Wipe clean with damp cloth + mild dish soap (FREE fix, 90% resolve). If not fixed: sensor replacement $125-$185.
High-pitched squeal during operation
Idler pulley bearing failure. $125-$185 replacement, 60-min. Inspect belt simultaneously, bundle $225-$345 if belt shows wear.
Rhythmic thumping noise
Support rollers have flat spots (common if dryer sat unused). Pair replacement $145-$215. Preventive tip: monthly 10-min Air Fluff cycle on unused dryers.
How much does Bosch dryer repair cost?
Diagnostic $89, waived with repair. Common: door latch $125-$185, heating element (WTG) $185-$285, NTC sensor $145-$215, belt $125-$185, moisture sensor cleaning free. Heat-pump compressor (WTW) $685-$985 rare but expensive. Full pricing above.
Ready to schedule Bosch dryer service?
Same day available. $89 diagnostic, waived with repair. Labor and parts quoted before we start.