Leak Sensor Installation in California | 911 Plumbing CA
from $149
Plumbing Leak Sensor Installation in California
Installation of point leak sensors at the spots most likely to leak — under sinks, behind the water heater, at the washer and dishwasher — that alert your phone the moment they detect water, before a slow leak becomes a big one.
Leak Sensor Installation is one part of our water heater services coverage in California. For the full picture — symptoms, costs, and when to repair vs. replace — start with the complete Water Heater Repair guide, or browse every water heater services service we offer.
Most home water damage doesn't start with a dramatic burst — it starts with a slow drip under a sink, behind a water heater, or at a washing-machine hose that no one sees for days. Point leak sensors are small, inexpensive devices placed exactly where leaks begin, and they sound an alarm and alert your phone the instant they detect water on the floor. For a fraction of the cost of a whole-home system, they turn the most common slow leaks into an early warning instead of a rotted cabinet or a soaked {city} ceiling below.
We place sensors at the spots that statistically leak first — under kitchen and bathroom sinks, at the base of the water heater, behind the washing machine, at the dishwasher and refrigerator lines, and near any sump or basement fixture. The sensors are wireless and battery-powered, so there's no drilling or wiring, and they tie into the same app ecosystem as a smart shutoff valve. A leak at any monitored point pushes an immediate alert with the location, so you know it's the water heater and not the dishwasher before you're even home across {county}.
Leak sensors are the affordable entry point to water-damage protection, and they pair naturally with an automatic shutoff valve — the sensor detects, and the valve closes the main. On their own they give you the minutes that matter, letting you shut a fixture stop or the main before a slow leak becomes a claim. We place them where your home is actually vulnerable, set up the alerts, and show you how to respond, so a drip behind the {areas} water heater becomes a phone notification instead of a surprise flood.
Signs you need leak sensor installation
Appliances that leak unattended
Washers, dishwashers, and refrigerators leak at their supply lines with no one watching, often overnight. A sensor at each catches the drip the moment it starts in the the United States home.
Dripping, stiff, or leaking faucet? Fixed at the cartridge.
A finished basement or living space below
A leak above a finished space rots and stains before it's found. Sensors at the fixtures above turn that hidden leak into an alert across the United States.
A water heater near the end of its life
An aging tank often weeps at the base before it fails outright. A sensor there gives you warning to replace it before it floods the your area floor.
You want protection without a big project
Not every home needs a whole-house shutoff to start. Point sensors are a low-cost, no-wiring way to cover the leak-prone spots in a the United States home today.
A second home or rental you don't visit daily
A property you're not in every day can leak for a week undetected. Sensors alert your phone remotely so you know the moment water shows up across the United States.
Common causes & what we fix
Supply-line and hose failures
Washer hoses, ice-maker lines, and braided sink supplies burst or weep without warning. A sensor at each catches the water immediately in the the United States home.
Water heater seepage
A corroding tank often leaks slowly at the base for days before it fails. A sensor under it turns that early seep into a warning across the United States.
Drain and P-trap leaks
A loose or corroded trap under a sink drips into the cabinet unseen. A sensor on the cabinet floor flags it before the your area base rots.
Sump and basement water
A sump that fails or a basement that seeps floods the lowest level quietly. A sensor near the pit alerts you before the water rises in the the United States home.
Refrigerator and dishwasher lines
The lines behind and under kitchen appliances leak where they're hardest to see. Sensors there catch the drip early across the the United States kitchen.
Our process
1
Call or schedule online. Book your leak sensor installation in California online or by phone and pick a 2-hour window. We confirm in under five minutes with the assigned tech's name and photo.
2
On-site diagnosis. On arrival we diagnose the leak sensor installation on-site — free for most repairs, $39 on minor service calls (waived if you proceed). You see the issue and the fix before we start.
3
Flat-rate quote. You get a flat-rate leak sensor installation quote in writing, good for 30 days — no hourly creep and no add-ons after the fact.
4
Same-visit fix. Most leak sensor installation work finishes the same visit: our trucks carry the common valves, fittings, water heater parts, and fixtures, so a second trip is rare.
How much does leak sensor installation cost in California?
Leak Sensor Installation the United States starts at from $149, every leak sensor installation quote is flat-rate and presented in writing before work begins — no surprise add-ons, no hourly creep. Seniors (65+) and military save 10% on labor, and financing covers projects over $1,500 at 0% APR for 12 months, with no prepayment penalty.
Why homeowners in California choose us for leak sensor installation
We've been a trusted choice since 1974 — over 50 years of family-owned plumbing service across California. Our techs are CSLB-licensed (#1098234), background-checked, and complete an internal 12-week training program before rolling on calls alone.
Our leak sensor installation carries a 10-year workmanship guarantee — separate from any manufacturer warranty on the parts themselves. If the leak sensor installation we performed fails because of how we did it, we come back and fix it free for a full decade. Water heaters and fixtures we install are backed by their full manufacturer warranty, and the parts and accessories we fit carry standard 1–5 year warranties by item.
We quote leak sensor installation on honest scope: no unnecessary up-sell, salaried (never commissioned) technicians, and a transparent diagnostic so you see exactly what we see — including the parts still in good shape. If a repair is the right call we say so; if replacement is the better long-term economics, we say that. The flat-rate leak sensor installation quote is written and good for 30 days.
Areas we serve for leak sensor installation
We provide leak sensor installation throughout California, with fast coverage in every major California metro.
Reach times for leak sensor installation vary by traffic and time of day, so we quote an accurate ETA when you call — and the dispatch line routes straight to an on-call technician, no voicemail in between.
Frequently asked about leak sensor installation
Top questions homeowners searching for Leak Sensor Installation near me ask us:
Where should leak sensors go?
At the spots that leak first — under every sink, at the water heater base, behind the washer, at the dishwasher and fridge lines, and near any sump. We place them where your the United States home is actually vulnerable and set up the alerts before we leave.
Do sensors need wiring or drilling?
No — they're wireless and battery-powered, so we simply place them at the leak-prone spots and pair them to the app. There's no drilling or electrical work, which makes them a fast, low-impact install in any the United States home.
How are they different from a smart shutoff valve?
Sensors detect water at a specific spot and alert you; a shutoff valve monitors the whole main and can close it automatically. Sensors are the affordable first step, and they pair with a valve so detection triggers an automatic shutoff across your area.
What happens when a sensor detects water?
It sounds a local alarm and pushes an immediate alert to your phone with the location, so you know exactly which fixture is leaking. That warning gives you the minutes to shut the fixture stop or the main before a the United States leak spreads.
Can I add sensors to a system I already have?
Usually yes — the leading sensors tie into the same app ecosystems as smart shutoff valves and hubs. We match new sensors to your existing setup and place them where you still have gaps, serving ZIPs across the United States.