I noticed signs of corrosion near the valve connected to my washing machine and contacted Cisneros…read more& Sons based on a referral. Octavio arrived right on time and took a thoughtful, step-by-step approach to assess the issue. He explained the possible causes and noted he might need to open part of the drywall to investigate further. By the end of the day, he sent a clear, detailed quote for both the diagnostic work and any necessary repairs. At the follow-up visit, he quickly pinpointed the issue: the washer valve had been installed without a dielectric union, which caused the corrosion. I appreciated his technical expertise and the fact that the new outlet's larger cover meant no wall patching was needed. Octavio was professional, communicative, and efficient. I wouldn't hesitate to call Cisneros & Sons again for any future plumbing work.

Octavio replaced our old water heater and brought the installation to the building code - added a…read moredrain pan, sediment trap, discharge pipe, fixed the strapping. This is a second time I use his services and very pleased with the result. He is always on time, works fast and efficiently. Great communication as well.

Robert Garcia a senior technician with this company. He was professional, knowledgeable, courteous,…read morerespectful & more helpful than other providers we've dealt with.

Robert arrived to handle a toilet clog that was impacting our home. Robert first did the work to…read morediagnose the clog. He brought in the snaking machine to remove the clog. When he was done, cleaned up the area well. Robert did a great, thorough job. We're happy with the service he provided through Flow City Plumbing! Thank you.

Kevin came out to my house to give an estimate (free!!!!) for an automatic water shut off system…read morethat our homeowner's insurance required for our annual renewal. He gave me invoices for both the labor and parts, and the labor on its own. He broke everything down and spent about 20 minutes discussing the system during the estimate (free!!!). He came on the day and time (exactly on the dot) we scheduled and gave me a heads up per my request due to having to secure our dogs prior. He completed the job and then went into detail explaining how the system worked, set the app up on my phone (including the warranty registration), and answered some questions I had about potential future jobs we may need in the house. He never rushed me or made me feel like I was wasting his time. His quote was a couple hundred bucks cheaper than our previous plumber. I'm sold. Customer for life! Thank you Kevin!!

Kevin responded promptly when I reached out, and did a great job in replacing the fill valve of a…read moreKohler one-piece design toilet (which is much harder to handle than regular two-piece models). The service was professional. I will hire them again without hesitation.

Juan and Grigorio came to diagnose a low pressure faucet issue. Originally they came to work on the…read morefaucet and it was working for a bit but broke again. The boss called them back immediately and promptly came back to explain the issue to me and they did another repair - no charge for second time. Additionally Juan added some teflon as an added measure for when I would replace the faucet. A++ customer service! These guys are great. Very fast and professional.

Andres is the best! I love his business. He is so kind and genuine and you can really trust him…read more Another company I have been using for years sent two different people and told me I need a brand new toilet when I didn't. Call Andres if you need help :)

(Really 4.5 stars, but I'm rounding up here in good faith.)…read more We've hired Carlos and his crew a few times now, thanks to a house full of fifty year old galvanized pipe. We finally decided we were tired of having a plumbing emergency every couple of months, and hired GSP once more, to replace every pipe in the house: new copper on the service side, new ABS on the drain side. The Good: GSP's crew showed up on time every day of the job, and always communicated what rooms they'd be working in, when the water would need to be shut off, when inspections would happen, and everything else pertinent to the job. After all the pipes were replaced and the water was back on, we've had zero leaks or issues. Everything just worked, the first time. This is really a testament to the care and quality that GSP puts into their work! Carlos was particularly generous with his time during the project, and helped us with some minor plumbing jobs that were clearly not part of the scoped work. He patiently answered a thousand of my questions and never seemed annoyed or rushed. There were little touches I was very impressed by: without asking, the GSP crew re-routed one of my hose bibs to make it easier to access & use, for example. The Bad: We had a misunderstanding around the water heater, which was also replaced as part of the job. I expected a 50 gallon unit but a 40 gallon unit was installed. Not a big deal for us since it's a small house, but I'm a little disappointed to not get what was written in the job spec, nonetheless. We understand it doesn't make sense to clean everything at the job site for the end of each work day, only to come back in a few hours and mess it all up again. However, because the job site in question was the home we were living in, this was a bit of a hardship. We spent many evening hours sweeping, scrubbing, and vacuuming up drywall and assorted dust that was left behind, so we could sit on our couch, or cook a meal. The Verdict: We are very happy with our new pipes, clean water, and improved pressure! We would absolutely hire GSP again for a job of any size. The most important thing for us was the job being done with quality, and both the materials and workmanship provided by GSP have that, in spades!

I cannot say enough good stuff about Carlos. Professional, courteous, and adheres to quote. There…read moreis nothing more I'd like! Gave his info to my neighbors and they used him too! I will use him again!

Hire this company if you want them to also dump the waste at your place of residence. By far the…read moremost unprofessional plumbing I have ever came across! You think a business would do the right thing from the get go. Disgusting!!

We'd been dealing with slow drains in multiple sinks and showers and finally decided to call in…read morehelp. Ron was fantastic, he ran a camera through the line, showed us exactly where the problem was, and cleared out a big clog that had been building up for years. Everything runs like new now and we'll definitely keep their number handy.

Marcos was great, he came and gave an honest review and saved us a lot of money…read more Leaky shower was the head and not the pressure or cartridges Will use them again!

I had a great experience with MD Silicon Valley Plumbing Services. Marcos, the plumber, did an…read moreexcellent job from start to finish. He was very friendly, respectful, and professional. He took the time to answer all of my questions and explained everything clearly and in detail. The quality of his work was excellent, and everything was left clean and working perfectly. I'm very satisfied with the service I received and would highly recommend MD Silicon Valley Plumbing Services to anyone looking for reliable and professional plumbing services. Great company and excellent service. I would definitely call them again for any future plumbing needs!

James and Javier are fantastic. Over the years we've had them replace a toilet, cap a defunct…read moreirrigation system, replace parts of a 100+ year old kitchen drain pipe, install a clean out port, replace a main water lines install a whole house water shut off, deal with a backed up washer drainage pipe, install a water line for a refrigerator, replace a faucet, replace a garbage disposal, unclog the main sewage pipe, install new hot and cold water lines, replace a water heater, fix botched work by previous plumbers, all for prices that are reasonable. Their work is worth every penny and more... They're friendly, do great work, are trustworthy, and easy to get along with, thoughtful, and careful about our pet. We've recommended them to everyone and they're the ones we call, every time. Our house is old and now that they've done so many things we don't see them much because they've replaced or repaired what needs it. I actually miss seeing them!

I've had a great experience having James K. as my primary plumber. He's helped me on multiple…read moreoccasions on maintaining and upgrading all my plumbing needs for my properties in the San Francisco, Bay Area. He has always been able to explain, teach, and come up with solutions for all my plumbing issues regardless of how difficult or complicated the project can be. If you ever get a chance to have Drain Brains work on your plumbing project, you're definitely in good hands.