Whether it's a leak, no hot water, or a clogged drain — A O Dowd Plumbing gets there fast with same-day service across Fontana and the Inland Empire.
While we work hard every day to improve for you, we have built a solid foundation that has worked for us day in and day out. We bring you the most advanced plumbing technology and are always improving the way we do different services. You will always be able to rely on us to be there at any time. Whether it is a leaky faucet or a water heater replacement, our 24-hour emergency care is available to you.
A O Dowd Plumbing provides full-service plumbing solutions for residential and commercial properties. Our plumbing services include leak repair, slab leak detection and repair, kitchen and bathroom plumbing, gas line services, plumbing pump systems, and emergency plumbing repairs. We focus on accurate diagnostics, code-compliant workmanship, and long-term plumbing solutions designed to keep your system operating safely and efficiently.
Raypak boiler systems are engineered for continuous operation in demanding commercial environments, making proper installation, routine service, and timely repairs essential.
Professional repair and installation help protect connected plumbing systems, support consistent hot water delivery, and extend the operational lifespan of commercial boiler equipment.
If you need professional Raypak boiler repair or installation in Fontana, CA, A O Dowd Plumbing is ready to help. Call today to speak with a licensed plumber or request a free service quote to receive expert commercial boiler solutions tailored to your system requirements. Sudden boiler shutdowns or gas-related issues may require immediate emergency plumbing services.
We offer complete water heater services, including water heater repair, replacement, and installation of tankless and high-efficiency systems. Whether you’re experiencing inconsistent hot water, rising energy costs, or a failing unit, our plumbers provide reliable water heater solutions designed to restore comfort and improve performance.
Our sewer and drain services address blockages, backups, and damaged piping that disrupt your plumbing system. From slow drains to full sewer line failures, we provide professional diagnostics and long-lasting solutions to restore proper flow and prevent future issues. A O Dowd Plumbing uses proven methods and modern equipment to safely resolve sewer and drainage problems for residential and commercial properties.
Our water treatment services are designed to improve the quality, safety, and performance of the water used throughout your home or business. Hard water, chlorine, sediment, and contaminants can affect plumbing systems, appliances, and overall water taste. A O Dowd Plumbing provides customized water treatment solutions that address local water conditions and deliver cleaner, healthier water at every tap.
Whether you’re dealing with a repair, replacement, or water system issue, A O Dowd Plumbing is here to help. Call now to speak with a licensed plumber or request a free service quote and get clear, honest recommendations for your plumbing needs.
A O Dowd Plumbing Inc. did an amazing job with the water heaters I needed repaired. The team was friendly and professional all around. They communicated well from beginning to end - even followed up to make sure everything was working well
I had some issues with my boiler and their website was very clear on their expertise in that boiler so I called right away. They were were a little outside my area so Jason spent 15-20 minutes over the phone walking me though how to diagnose and fix it myself. I was able to get it up and running.
When a pipe bursts or the hot water quits, you need a plumber who shows up, explains the problem plainly and fixes it right. A O Dowd Plumbing is a licensed and insured plumbing company serving Fontana and the Inland Empire with honest diagnosis, upfront options and same-day service. Our Fontana plumbers handle everything from routine repairs to full water heater, sewer and boiler projects for homes and businesses.
Call (909) 684-1915From a dripping faucet to a failed sewer line, here is what our team fixes most. Select a service to learn more or call us for a same-day appointment.
Leaking tanks, no hot water and old units replaced with reliable new ones, tank or tankless.
Water heater service →Stubborn clogs, slow drains and main line backups cleared fast, with hydro jetting when needed.
Sewer and drain services →See inside your line to find roots, breaks and belly sections before they become emergencies.
Camera inspection →Hidden leaks and slab leaks found and fixed before they damage your home.
Leak repair →Repair and installation for Raypak boilers and heating systems.
Raypak boiler service →Endless hot water and lower energy use with professional tankless installation.
Tankless water heaters →Safe gas line installation, repair and leak checks for homes and businesses.
Gas line services →Fight Fontana's hard water with softeners, filtration and purification systems.
Water treatment →Faucets, toilets, disposals, shower valves and remodel plumbing.
Kitchen and bath plumbing →Burst pipes, sewer backups and gas smells handled day or night.
Emergency plumbers →Trenchless and traditional repair for cracked, collapsed or root-damaged lines.
Sewer line repair →Inland Empire plumbing faces challenges you will not find everywhere. Knowing them is how we diagnose faster and make repairs last.
Fontana water is hard, often 15 to 25 grains per gallon, which builds scale in water heaters, fixtures and valves. Regular flushing and a water softener or treatment system protect your plumbing and extend appliance life.
Many local homes were built between the 1960s and 1990s and still have original copper supply lines and drains. Pinhole leaks and recurring clogs are common. Read when repiping beats patching in our whole-house repiping guide.
Expansive clay soil and seismic activity crack sewer lines and open slab leaks. A sewer camera inspection finds trouble early, before it becomes an emergency repair.
Do not wait on a leak or a backup. Call A O Dowd Plumbing for fast, same-day service, or visit our emergency plumbing page to see what to do until we arrive.
Call (909) 684-1915We are based in Fontana and serve more than 20 nearby cities. Select your city to see local plumbing services and service details.
Yes. We provide 24/7 emergency plumbing service in Fontana and across the Inland Empire for burst pipes, sewer backups, gas leaks and failed water heaters. Call (909) 684-1915 any time, and read what to do while you wait on our emergency plumbing page.
Yes. A O Dowd Plumbing is a licensed and fully insured plumbing company, so your home and your investment are protected on every job.
We serve more than 20 Inland Empire cities, including Rancho Cucamonga, Rialto, Ontario, Upland, Chino, Corona, Riverside, Redlands and Yucaipa. See the full list in the service areas section above.
If your water heater is more than 10 years old, leaks from the tank, or needs repeated repairs, replacement is usually the better investment. Newer problems like a failed thermostat or heating element can often be repaired. See our water heater repair and replacement and tankless water heater pages for both options.
Warning signs include an unexplained jump in your water bill, the sound of running water when everything is off, warm spots on the floor, and damp flooring or baseboards. Learn more about slab leak repair and leak repair, or read our guide on finding a hidden water leak before it gets worse.
