Your local plumbing experts in Diamond Bar, CA. From emergency response to full repiping, we handle it all.
Our licensed California plumbers provide a complete range of plumbing services for Diamond Bar homeowners and businesses.
Fast water heater repair for tank and tankless units. We diagnose and fix pilot light failures, thermostat issues, heating element problems, pressure relief valve malfunctions, and sediment buildup quickly.
Professional sump pump repair for residential and commercial properties. We diagnose electrical, mechanical, and float switch failures and return your pump to full working order with quality replacement parts.
Professional slab leak repair from detection through restoration. We use acoustic listening devices and thermal cameras to find the leak precisely, then repair or reroute the line to solve the problem permanently.
Professional drain cleaning using hydro-jetting and snaking to clear slow and clogged drains throughout your home. We remove grease, hair, roots, and mineral buildup — restoring full flow and preventing backups.
A dripping faucet wastes hundreds of gallons per month. Our licensed plumbers diagnose and repair kitchen, bathroom, and utility faucets of all brands and types — stopping leaks and restoring smooth operation.
Upgrade to on-demand hot water with professional tankless water heater installation. Our plumbers assess household demand, recommend the right model, and install with all required gas or electrical connections.
Trenchless sewer repair replaces damaged sewer lines without digging up your yard, driveway, or landscaping. We use pipe lining and pipe bursting methods to save time, money, and the mess of conventional excavation.
Video sewer inspection reveals exactly what is happening inside your sewer line — no guesswork, no unnecessary excavation. Essential for pre-purchase inspections and diagnosing recurring sewer problems.
Expert water line repair using trenchless and conventional methods. We locate the break, recommend the most cost-effective repair approach, and restore your water service with minimal disruption to your property.
Professional gas line repair performed by licensed plumbers who understand gas system safety. We find the leak, repair or replace the damaged section, and pressure test the line before restoring gas service.
Plumbing emergencies happen day and night. Our 24/7 emergency plumbers arrive quickly with the tools and materials to handle any urgent plumbing situation — protecting your property and restoring service fast.
Professional water heater replacement for tank, tankless, and hybrid models. We match the right unit to your household needs and install it with all required connections, expansion tanks, and safety components.
Professional gas leak detection using calibrated detectors and pressure testing to find leaks in gas lines, connections, appliances, and meters. We locate the leak source precisely and recommend repairs immediately.
Find hidden leaks before they cause serious damage. Our leak detection specialists use thermal cameras and electronic listening devices to locate leaks behind walls, under slabs, and underground with precision.
Reliable pipe repair throughout your home — from pinhole leaks in copper supply lines to cracked drain pipes and corroded fittings. We diagnose the root cause and fix the problem at the source.
Professional repiping services using PEX, copper, or CPVC pipe matched to your home's needs. We complete most whole-home repipes in 1 to 3 days with minimal drywall damage and full pressure testing at completion.
Full-service commercial plumbing for restaurants, offices, retail, multi-family, and industrial properties. We handle new construction, maintenance contracts, fixture replacement, and urgent repairs.
Annual backflow testing and prevention device installation for residential and commercial properties. Our certified testers verify your backflow preventer and handle compliance paperwork with your water authority.
Reliable toilet repair and installation for running toilets, phantom flushes, rocking toilets, weak flushes, and leaking seals. We diagnose the root cause and repair or replace components quickly and affordably.
Boiler repair and installation for residential and commercial hydronic heating systems. We service gas, oil, and electric boilers for reliable winter heating — diagnosing pressure, circulation, and combustion issues.
Grease trap maintenance keeps your kitchen drains flowing and your business compliant with local waste regulations. We provide scheduled pumping, manifesting, and inspection-ready documentation.
Professional sump pump installation for new construction and pump replacements. We handle the pit setup, discharge line routing, electrical connections, and test the completed installation under load.
Hydro jetting service using high-pressure water to scour the interior of your drain and sewer lines. Removes grease, scale, tree roots, and years of buildup that mechanical snaking cannot reach.
Professional sewer line repair that diagnoses the actual problem before recommending solutions. Camera inspection shows us exactly what is wrong so we can perform the least invasive, most cost-effective repair.
When your garbage disposal jams, leaks, or stops working, our plumbers diagnose the problem fast. We repair what makes sense and replace units that are beyond repair with quality new disposals.
Serving a city of 50,933 residents means Magnet Plumbing maintains multiple licensed crews ready to handle plumbing emergencies and installations across Diamond Bar and surrounding California communities. From older neighborhoods with aging galvanized pipes to newer developments with modern plumbing systems, we adapt our approach to match the demands of every property.
Our Diamond Bar customers count on us for everything from emergency leak repairs to complete repiping and water heater replacement. With a growing number of completed plumbing jobs across the region, we bring the resources of a professional operation with the personal attention of a contractor who takes pride in every job. Call (844) 618-0753 for service.
Here is what sets Magnet Plumbing apart from other plumbing companies in Diamond Bar.
Every plumber we send carries a valid state license and full liability insurance. You get peace of mind knowing the work is done legally and that your property is protected if anything goes wrong.
Our plumbers live and work in the communities they serve. They understand local water quality, regional pipe standards, and the specific plumbing challenges common to your area — giving you faster, better solutions.
We use thermal imaging cameras, electronic moisture meters, and acoustic listening devices to find hidden leaks behind walls, under slabs, and underground — without tearing into your property unnecessarily.
We understand your time is valuable. For most plumbing jobs, we offer same-day or next-day scheduling so you are not left waiting days for a plumber to show up. Emergency calls are prioritized immediately.
We use professional-grade pipes, fittings, fixtures, and water heaters rated for long-term performance. Combined with skilled installation, our repairs and replacements are built to hold up for years without repeat problems.
Have questions about plumbing in Diamond Bar? We have answers.
Plumber rates in Diamond Bar typically range from $100 to $250 per hour depending on the type of work and time of day. Common jobs like drain cleaning run $150 to $300, while slab leak repair and repiping projects cost significantly more. Magnet Plumbing provides free estimates so you know the full cost before any work begins.
Simple repairs like faucet replacement, toilet repair, or drain clearing in Diamond Bar often take 1 to 2 hours. More complex jobs like slab leak repair, water line replacement, or water heater installation typically take a half to a full day. Whole-home repiping can take 2 to 4 days. Magnet Plumbing provides a clear time estimate before starting any job.
To prevent frozen pipes in Diamond Bar, insulate exposed pipes in unheated areas like garages, crawl spaces, and attics. Keep cabinet doors under sinks open during cold snaps. Let faucets drip slightly during freezing temperatures. If a pipe does freeze, call Magnet Plumbing immediately rather than attempting to thaw it yourself to avoid a burst.
Burst pipes, gas leaks, sewer backups, and flooding all require immediate emergency plumbing response in Diamond Bar. A burst pipe can release hundreds of gallons per hour, and gas leaks pose fire and explosion risks. Magnet Plumbing provides 24/7 emergency plumbing service throughout Diamond Bar and surrounding California communities.
Trenchless sewer repair in Diamond Bar replaces damaged sewer lines using pipe lining or pipe bursting methods — without digging up your yard, driveway, or landscaping. It works for most sewer line problems including cracks, root intrusion, and offset joints. Magnet Plumbing uses camera inspection to confirm trenchless repair is the right approach for your specific line condition.
Low water pressure in Diamond Bar homes is often caused by mineral deposits clogging aerators and pipes, a partially closed shutoff valve, a failing pressure regulator, or a hidden water line leak. Corroded or deteriorated pipes in older Diamond Bar properties can also restrict flow significantly. A licensed plumber can diagnose the specific cause and recommend the right fix.
See what our customers have to say about their experience with Magnet Plumbing.
"Saul at Magnet Plumbing has been my go-to plumber for a variety of projects, large and small. Leaks, installations, new lines, repairs, his team has done it all. Great communication, easy to work with and a total pro. Highly recommended!"
"Main water line burst and we had a river in the front yard. They isolated the break, got the water back on within a few hours, and replaced the section cleanly the next day. Excellent emergency response."
"Fixed a hidden leak behind the drywall without tearing apart the whole wall. Impressed with how precise they were and how quickly they found it."
We also provide plumbing services in these neighboring communities.