Dishes coming out dirty? We fix spray arms, wash motors, and water temperature issues. Same-day service, 90-day warranty. Average repair cost: $100–$250. Some causes are DIY-fixable — see below.
Dishes coming out dirty in San Rafael typically indicates a mechanical issue rather than water quality problems, since Marin Municipal Water District water at 35 ppm TDS is soft enough to keep spray nozzles clear of mineral deposits. The 83°F summer climate affects incoming water temperature — hot supply lines deliver warm water that activates detergent quickly, but winter months may still require pre-warming. Ranch/bungalows from 1965 in Terra Linda generally have adequate water heater capacity. Regular filter cleaning maintains water circulation pressure needed for effective cleaning. With 8 providers serving San Rafael, finding a technician for cleaning performance diagnosis is straightforward.
San Rafael's Marin Municipal Water District water at 35 ppm TDS is soft enough to keep spray arms mineral-free; cleaning problems trace to mechanical issues or water temperature. Warm incoming water in summer activates detergent quickly, but winter supply may be cooler. Ranch/bungalows from 1965 generally have adequate hot water delivery.
Clogged spray arms
Failed wash motor
Low water temperature
Broken soap dispenser
Worn circulation pump
Normal wear on internal parts is the leading cause of dishwasher not cleaning dishes issues. Regular use over 5-10 years gradually degrades moving parts and seals.
Cost: $130–$240 | Time: 60-90 minutes
Control board malfunctions, faulty sensors, or wiring issues can cause not cleaning dishes symptoms. Power surges and age-related degradation are typical triggers.
Cost: $156–$280 | Time: 45-75 minutes
Debris, mineral deposits, or foreign objects can restrict normal operation. This is often preventable with regular maintenance.
Cost: $130–$195 | Time: 30-60 minutes
| Detail | Range |
|---|---|
| Diagnostic | Free |
| Typical repair cost | $100–$250 |
| Repair time | 1-1.5 hours |
| Warranty | 90 days parts + labor |
Cost varies by root cause. Exact quote after free diagnostic visit.
Dishwasher cleaning-performance repairs cost $100-$250 in the Bay Area. Spray arm cleaning or replacement runs $80-$150. Wash motor replacement averages $175-$275 installed. Regular filter cleaning and annual spray arm inspection maintain cleaning performance.
In San Rafael, wide day-night temperature swings (30f+ delta) stress thermal expansion joints, thermostat cycling, and sealed-system pressures. This can affect your appliance's water inlet solenoid: cold overnight temperatures contract the solenoid plunger; daytime heat expands it — this cycling eventually causes the valve to stick Insulate cold water supply lines in unconditioned spaces like garages
In San Rafael, very low mineral content (<60 ppm tds) or sodium-softened water causes over-sudsing, rubber swelling, and reduced detergent rinsing. This can affect your appliance's wash pump seal: soft water creates excessive suds even with normal detergent amounts, increasing pressure on the wash pump seal and causing leaks Reduce detergent by 30-50% in soft water areas; use detergent specifically formulated for soft water
Free diagnostic visit for not cleaning dishes issues. Same-day appointments available in San Rafael.
Book Free DiagnosticReviewed by Marcus Rivera, Senior Refrigeration & HVAC Technician