Sump Pump Repair & Installation Keep Crawl Spaces Dry Through Storm Season
Repair, replacement, and battery backup systems for Peninsula homes that flood when the winter rains arrive
Why Peninsula Crawl Spaces Flood
Most homes in Redwood City, San Carlos, Belmont, and the surrounding cities sit over crawl spaces rather than basements - and when the Pacific storm systems stack up in winter, those crawl spaces collect water. Low-lying lots, homes at the bottom of sloped streets, properties near creeks, and neighborhoods with high seasonal water tables all see it: standing water under the house that breeds mold, rots framing, corrodes ductwork, and invites pests. A properly installed sump system is the difference between a dry crawl space and an annual problem you discover by smell.
The pattern we see every year is the same: the first big atmospheric river arrives, and the phones light up with two kinds of calls - homes that never had a pump and homes whose pump quietly died since the last time it was needed. A sump pump can sit idle for eight dry months and then be asked to run continuously for a week. That duty cycle kills neglected pumps, which is why the smart time to test, service, or replace yours is October, not during the storm.
Repair, Replacement, and First-Time Installation
We service all of it: failed pumps and float switches, stuck check valves, clogged discharge lines, undersized pumps that cannot keep up, and complete new installations - basin excavation, pump sizing for your actual water volume, discharge routing to an approved location, and a high-water alarm so you hear about a problem before your flooring does. For homes where power outages and big storms arrive together (which on the Peninsula is exactly when they do), we install battery backup systems that keep pumping when the grid does not.
Pump choice matters more than most homeowners are told. Submersible units run quieter and handle debris better; pedestal pumps cost less and are easier to service; and sizing is a real calculation based on inflow, head height, and discharge run - an oversized pump short-cycles itself to death, an undersized one loses the race in a heavy storm. We size to your conditions and explain the choice.
Sump Pump FAQs
How long does a sump pump last?
Typically 7 to 10 years, less if it runs heavily every winter or sits in a silty basin. The dangerous part of that lifespan is how it ends: pumps usually fail silently during the idle months and reveal it during the first big storm. An annual test - pour a bucket of water into the basin and confirm the pump kicks on, ejects the water, and shuts off - takes two minutes and catches most failures before the weather does.
Is a battery backup sump pump worth it on the Peninsula?
If your crawl space genuinely floods, yes - because the storms that flood it are the same storms that knock out power. A battery backup runs for hours of continuous pumping when the grid is down, which is precisely the window when an unpowered primary pump turns a protected crawl space into a pond. We size backup systems to realistic outage durations, not best-case ones.
Why does my sump pump run constantly even in dry weather?
Three usual suspects: a float switch stuck or set too low, a failed check valve letting ejected water drain straight back into the basin (so the pump re-pumps the same water forever), or genuine continuous groundwater - sometimes from an unnoticed water line leak nearby. The first two are quick fixes; the third deserves investigation, and our leak detection can rule the supply line in or out.
Where does the sump pump discharge water go?
To a legal discharge point that sends water away from your foundation and not into the sanitary sewer - discharging groundwater into the sewer system is prohibited in our area cities. Proper installations route to the yard, a storm drainage path, or daylight at grade, far enough out that the water does not simply circle back into the crawl space. Discharge routing is half of a good installation.
Can you install a sump pump in a crawl space that has never had one?
Yes - first-time installations are routine work. We identify the low point where water actually collects, excavate and set a proper basin, install and size the pump, route the discharge legally, and add an alarm. Most crawl space installations complete in a day, and the right time to do it is before the rainy season, not during it.
Get Your Sump Pump Storm-Ready
Call (650) 269-0190 for Upfront Pricing
Repair, replacement, or a first-time installation before the rains test your crawl space. Licensed, bonded, and insured since 2010. CSLB #947961.
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