Combo unit won't drain? We clear pumps, fix hoses, and restore drainage. Same-day service, 90-day warranty. Average repair cost: $100–$300. Some causes are DIY-fixable — see below.
Redwood City's moderate water hardness and mix of aging ranch homes with newer apartment construction create drainage challenges from both mineral buildup and installation constraints. Ranch homes built around 1960 in Woodside Plaza, Redwood Shores, and Stambaugh-Heller have plumbing approaching 65 years old. Cal Water blended supply at 200 TDS introduces mineral content that deposits inside drain pump housings at a moderate rate. The city's apartment development along Veterans Boulevard installs combo units in compact laundry closets where drain hose routing is tight. Redwood Shores waterfront homes experience slightly elevated humidity from the lagoon environment that can accelerate biological growth inside drain hoses.
Redwood City's Cal Water supply at 200 TDS introduces more mineral content than soft-water Peninsula neighbors, creating moderate pump scaling. The 1960-era ranch homes have aging plumbing. Newer apartment construction adds compact combo installations. Redwood Shores waterfront homes experience lagoon-influenced humidity that promotes drain hose biofilm. The city's warm, sunny microclimate is the sunniest on the Peninsula.
Clogged drain pump
Kinked drain hose
Failed pump motor
Filter blockage
Control board error
Normal wear on internal parts is the leading cause of washer dryer combo combo not draining issues. Regular use over 5-10 years gradually degrades moving parts and seals.
Cost: $150–$300 | Time: 60-90 minutes
Control board malfunctions, faulty sensors, or wiring issues can cause combo not draining symptoms. Power surges and age-related degradation are typical triggers.
Cost: $180–$360 | Time: 45-75 minutes
Debris, mineral deposits, or foreign objects can restrict normal operation. This is often preventable with regular maintenance.
Cost: $150–$225 | Time: 30-60 minutes
| Detail | Range |
|---|---|
| Diagnostic | Free |
| Typical repair cost | $100–$300 |
| Repair time | 1-2 hours |
| Warranty | 90 days parts + labor |
Cost varies by root cause. Exact quote after free diagnostic visit.
Combo drainage repairs in Redwood City cost $100-$300. The city has 10 repair providers including A Plus Appliance Repair and De Anza Appliance. Moderate water hardness means pump descaling is needed more often than in soft-water cities. Service calls cost $89-$150, diagnostic waived with repair.
Free diagnostic visit for not draining issues. Same-day appointments available in Redwood City.
Book Free DiagnosticReviewed by Marcus Rivera, Senior Refrigeration & HVAC Technician