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Plumbing Repair & Installation in the North Bay

Need Reliable Plumbing Services in Marin, Sonoma & Napa County?

Ongaro & Sons has proudly served homeowners in Marin, Sonoma, and Napa counties since 1932. Whether you’re dealing with a clogged drain, low water pressure, or a running toilet, our team of expert plumbers can quickly diagnose the issue and provide an effective, long-lasting solution.

We offer a full range of plumbing services, including repairs, installations, and routine maintenance for a multitude of plumbing and water systems, all backed by friendly, licensed professionals who arrive on time and ready to work. You’ll get clear, upfront pricing with no surprises and access to convenient financing options (subject to approved credit), so you can complete any necessary upgrades or repairs.

Our company vans are fully stocked, so most problems are fixed in a single visit. When you need fast, dependable service from trusted local plumbers, Ongaro & Sons is here to help. Call us at 415-741-2820 or request services online to schedule your plumbing service today.

Plumbing Repair Services

Plumbing issues can quickly disrupt your day. At Ongaro & Sons, we offer prompt and professional plumbing repair services to help you get back to normal, fast. Our licensed technicians have the experience to diagnose and fix a wide range of plumbing problems.

From faucet leaks and running toilets to more complex sewer line or water heater issues, we’ll provide reliable, long-lasting solutions that restore your system’s function and efficiency. No guesswork, no unnecessary upsells, just straightforward, expert service when you need it most.

Whether you’re upgrading outdated fixtures or replacing worn-out systems, Ongaro & Sons offers professional plumbing installation and replacement services tailored to your home’s needs. We install everything from water heaters and sump pumps to toilets, faucets, and complete water or sewer lines.

We’re here to make your next plumbing project stress-free and successful.

Plumber using a wrench to tighten a siphon under a sink

Plumbing Installation & Replacement

Whether you’re upgrading outdated fixtures or replacing worn-out systems, Ongaro & Sons offers professional plumbing installation and replacement services tailored to your home’s needs. We install everything from water heaters and sump pumps to toilets, faucets, and complete water or sewer lines.

We’re here to make your next plumbing project stress-free and successful.

Plumber installing and replacing pipes

Your Comfort, Our Priority

Ongaro & Sons is your trusted heating, cooling, plumbing, electrical, and solar expert, specializing in reliable maintenance and repair services that keep your home running efficiently year-round.

Our certified technicians deliver unmatched expertise with fast, friendly service across Marin, Sonoma and Napa County. From HVAC tune-ups to plumbing repairs and electrical upgrades or solar solutions, we focus on energy-efficient performance and long-term comfort. Count on us to maintain the systems that power your home and keep your environment just the way you like it.

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Licensed, Insured, Background-Checked

Our technicians are licensed, experienced, and trained to service all makes and models.

Locally Owned and Operated

Serving the Napa, Marin, and Sonoma communities with personalized, hometown service.

Reliable Repairs

We respond quickly and get the job done right the first time, with no surprises.

Since 1932

Why Ongaro & Sons for Plumbing

Eleven active licence classifications, which is why the sewer lateral and the water service do not need a second contractor.

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Licensed well beyond general plumbing

Ongaro & Sons holds C-36 plumbing plus C-42 sanitation system, C-34 pipeline, C-4 boiler and steam fitting, and C-61/D21 machinery and pumps. Sewer laterals, water services, boilers and pump work are all inside our own licence.

Diagnosis before excavation

Camera inspection and locating tell you where the defect actually is. That is the difference between a spot repair and a trench across the front garden.

Trenchless where the ground allows it

Pipe bursting and lining replace a line without opening the whole run. We will say plainly when conditions rule it out.

Water quality treated as a local question

Hardness varies by district across the North Bay. What your water actually is decides whether softening or filtration is worth doing.

One plumbing contractor for the whole property

From the fixture to the meter to the lateral, the work stays with one licence holder. Ongaro & Sons has been family-owned in Marin, Sonoma and Napa since 1932.

Ongaro maintenance van
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Membership

Ongaro Maintenance Plans

Annual maintenance on your home systems provides safeguards and comfort to you and your family. Members get priority scheduling, discounts, and proactive checkups that catch problems early.

Member Discounts

5% off every repair and replacement, all year long.

Peace of Mind

Proactive checkups catch issues before they become big problems.

Courtesy Reminders

We call you to schedule: never miss a seasonal service.

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Value That Lasts

With Ongaro & Sons, you’re investing in quality, integrity, and service that stands the test of time. Explore our current promotions and see the difference real value makes for your HVAC, plumbing, and electrical needs.

Frequently Asked Questions

Can I upgrade to a high-efficiency boiler?

Yes, modern boilers are more compact and energy-efficient, saving you money on fuel bills.

Is it safe to run a leaking boiler?

No, turn it off and call a technician. Leaks can cause pressure loss, corrosion, and water damage.

What are signs my boiler needs repair?

No heat, water leaks, strange noises, or frequent cycling on and off are all red flags.

Are chemical drain cleaners safe to use?

Chemical drain cleaners can effectively clear minor clogs but come with risks. They can be harsh on your plumbing, potentially causing damage to pipes over time, especially if used frequently. Additionally, they can be hazardous to handle and may release toxic fumes. Mechanical tools like plungers or drain snakes are safer alternatives. For persistent or severe clogs, it’s generally more effective to use professional drain cleaning services. These services use methods like snaking or hydro-jetting to clear blockages without the risks associated with chemicals.

How often should I have my drains cleaned?

The frequency of drain cleaning can vary depending on several factors such as the age of your plumbing, the volume of water and waste going through the pipes, and whether you have a history of clogs. As a general guideline, having your drains cleaned every 1 to 2 years is a good practice. However, if you notice slow drainage, frequent clogs, or unusual odors, you might need to schedule a cleaning sooner.

Is hydro jetting safe for older pipes?

It depends, video inspection is done first to ensure the pipes can withstand the pressure.

Is professional drain cleaning better than snaking it myself?

Yes, plumbers use video inspections and high-powered tools to fully remove buildup and spot underlying issues that DIY methods can miss.

Can I replace a faucet myself?

Yes, with basic tools and knowledge. If you're unsure, professional help ensures a leak-free install.

What can and can’t I put down my garbage disposal?

Garbage disposals can handle soft food scraps like fruit peels, cooked vegetables, and small bits of meat. Avoid putting down fibrous foods (like celery), grease, coffee grounds, eggshells, or hard items like bones, they can damage the blades or clog your pipes.

What causes a toilet to run continuously?

A running toilet usually signals a bad flapper or a float out of alignment. Replacing or adjusting these parts often fixes the issue. If not, call a plumber.

What should I do if my garbage disposal stops working mid-use?

First, turn off the switch. The blades may be jammed, but don’t put your hand inside. Your garbage disposal should have come with an Allen wrench (though any will do if it's the right size). Insert it into the hex-shaped hole in the bottom center of the unit and turn it back and forth to manually free the jammed flywheel. Once the jam is clear, check to see if you tripped the reset button (usually on the bottom of the unit). If it still won’t turn on or makes a humming noise, call a licensed plumber to avoid damaging the motor or electrical system.

Why is my faucet dripping?

Worn-out washers, O-rings, or valve seats are common causes. Fixing these can stop the drip and save water.