Find Leaks Before They Find You
Advanced Leak Detection Services in Fontana, CA
Hidden water and gas leaks can cause major damage to your property and drive up your utility bills. We use cutting edge technology to locate leaks accurately without unnecessary digging or destruction.
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Free Leak Detection
Free leak detection for just $69.
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650+
5-Star Reviews
A+
BBB Rated
20+
Years in Business
50+
Cities Served
Comprehensive Leak Solutions
Professional Leak Detection for Every Situation
Leaks are not always visible to the naked eye, and by the time you notice the signs, significant damage may have already occurred. Our team uses advanced electronic listening devices, thermal imaging, and specialized tools to pinpoint the exact location of leaks with remarkable accuracy. We detect slab leaks beneath concrete foundations, water line leaks in walls and underground pipes, and dangerous gas leaks that threaten your safety. For homeowners who want extra protection, we also install and support Moen smart leak detection systems that alert you to problems before they escalate. From Fontana to Pasadena and everywhere in between, we help you protect your property and peace of mind.
✔ Slab leaks under concrete foundations causing cracks and moisture
✔ Water line leaks inside walls, ceilings, and underground
✔ Natural gas leaks with odor or without detectable smell
✔ Hidden leaks causing unexplained high water bills
✔ Smart leak detection system installation and support
Foundation Leak Solutions
Slab Leak Detection and Repair Under Concrete
A slab leak occurs when pipes beneath your concrete foundation crack or corrode, and we use specialized equipment to locate these hidden leaks and repair them without unnecessary destruction.
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Hidden Pipe Leaks
Water Line Leak Detection in Walls and Underground
Water line leaks can hide inside walls, under floors, or underground, wasting thousands of gallons, and we detect these elusive leaks accurately to stop damage and reduce your bills.
Safety First
Gas Leak Detection for Your Safety
A gas leak poses a serious threat to your health and safety, and we use sensitive gas detectors to find even the smallest leaks in your system so we can repair them immediately.
Modern Leak Protection
Moen Smart Leak Detection System Installation
We install and set up Moen smart leak detection systems that monitor your pipes around the clock and send alerts to your phone the moment a leak is detected.
Our Services
Our Full Range of Residential and Commercial Services
Emergency Plumbing
We respond to urgent failures day or night, stopping leaks and restoring function to protect your property from water damage.
Drain Cleaning & Hydro Jetting
We clear stubborn clogs and buildup using high pressure water jets that thoroughly clean your pipes without harsh chemicals.
Water Heater Services
We install, repair, and maintain all types of water heaters, ensuring you always have reliable hot water for your household.
Leak Detection
We use non invasive technology to pinpoint hidden water and gas leaks, saving you money on repairs and utility bills.
Gas & Water Line Services
We handle installation, repair, and replacement of underground and interior lines, ensuring safe and consistent supply.
Fixture & Appliance Services
We install and repair faucets, showerheads, dishwashers, and other fixtures to improve efficiency and performance.
Your Leak Detection Experts
Why Southern California Trusts AS Plumbing Mechanical for Leak Detection
Over 20 Years of Local Experience
We have served Fontana and surrounding cities for two decades, understanding the unique soil and pipe conditions that cause leaks in this region.
A+ BBB Rated and 650+ 5 Star Reviews
Our reputation is built on honest work, fair pricing, and thousands of satisfied neighbors.
Advanced Non Invasive Technology
We use electronic listening devices, thermal imaging, and tracer gas to find leaks without tearing up your property.
Transparent Upfront Pricing
We provide clear estimates before we start, so you never face surprise charges or hidden fees.
Same Day Service Guarantee
We prioritize leak emergencies and arrive promptly to stop damage and protect your property.
REVIEWS
Trusted by Homeowners Like You
★★★★★
"Fast response, clear communication, and the job was done right the first time."
— Homeowner Review
★★★★★
"They found the leak, explained the repair, and kept the house clean."
— Leak Detection Client
★★★★★
"Called for an emergency and had someone out quickly. Highly recommend."
— Emergency Plumbing Client
Common Leak Detection Questions
Frequently Asked Questions About Leak Detection Services
Find quick answers to the most common questions we hear about detecting and repairing leaks.
How do I know if I have a hidden leak?
Common signs include unexpectedly high water bills, the sound of running water when all fixtures are off, damp or discolored walls, musty odors, and warm spots on your floor. If you notice any of these signs, call us for a professional inspection.
What is a slab leak and how is it detected?
A slab leak is a water leak that occurs in pipes located under your concrete foundation. We detect slab leaks using electronic listening devices and thermal imaging that locate the exact point of the leak without digging up your entire floor.
Can you detect gas leaks even if I cannot smell gas?
Yes, natural gas leaks are not always detectable by smell because the odorant can fade or you may have a reduced sense of smell. We use sensitive electronic gas detectors that identify even trace amounts of gas, ensuring your safety.
What is a Moen smart leak detection system?
Moen smart leak detection is a system of sensors and shutoff valves that monitor your plumbing for leaks. When a leak is detected, the system sends an alert to your phone and can automatically shut off the water to prevent damage.
How much does leak detection and repair cost?
The cost depends on the location and severity of the leak. We provide transparent pricing and free estimates before we begin any work. Early detection often saves you money by preventing extensive water damage and high repair costs.
Stop Wasting Water and Money on Hidden Leaks
One quick call connects you with a licensed plumber who will find and fix your hidden leaks before they cause serious damage.
Contact AS Plumbing Mechanical
⬤ 24/7 Emergency Plumbing
⬤ License #1115426
⬤ Serving Southern California and Arizona
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