Cupertino Plumbing

Bob S.

Thank you for your qualified service. Mario, your assigned plumber, repairing my plumbing situation was very cordial and definitive in explaining the circumstances involving my repair needs.
Should I need further assistance, I would not hesitate seek your services.

Bob & Yvonne

Stephen F.

I called Cupertino Plumbing to repair a broken water line for my sprinkler system. The phone was answered immediately and an appointment was set within 2 hours. Mario arrived on schedule, quickly assessed what needed to be done and promptly completed the repair. He left to check on another job nearby while the repair dried and returned to turn the water back on and check for leaks. I'm pleased with the work and especially the prompt response to my call.

Roger L.

My 15 year old Grohe kitchen faucet sprung a leak; ordered the replacement cartridge and proceeded to replace the faulty part. No go. Unable to break free the brass nut holding the cartridge in.

Called Cupertino plumbing (who are Grohe trained) for help as I didn't want to damage the SS finish on the fixture. Mario arrived, tried to remove the stuck part, and even removed the fixture from the sink to get better leverage. Proceeded to soak the threads with penetrating fluid. We decided that a 1-1/4"" deep socket and an impact driver would be the next step, so Mario left to get the tools needed.

Bingo! A few quick triggers on the tool broke the fitting loose and parts were replaced, although there were some incorrect parts supplied with the new cartridge so we re-used the one that was previously stuck. All was put back together again, but the water flow was very poor. Mario identified the back flow preventer had an obstruction in it and removed the defective O-ring and reconnected the part to the hose.

All in all, a straightforward job, but a difficult one; Mario persevered and got the job done! Best part: NO LEAKS!

--Roger L

Daniel L.

Frank did done a re-pipe for a massive commercial property a couple years back where he pocketed $100K for the job and promised a lifetime warranty for worksmanship problems. These are brand new copper pipes that Cupertino Plumbing did for the entire building, for hot water and cold water including the lines going in and out.

Sure enough, fast forward a few years, property changes ownership, and the pipes are exploding in the walls. People are literally living in these apartments minding their own business when randomly these brand new copper pipes start pinhole leaks, sending water spraying through their rooms, wrecking furniture, walls, and carpet along the way.

At first, we think this is a one-off. Then this starts happening every month in completely random and different part of the building , far too often to be a freak accident.

We call up Cupertino Plumbing to honor their worksmanship warranty because we've never seen ANY issue of where brand new copper pipes that are less than 10-20 years old, decide to randomly leak. And these are not small drips - this is water spraying through a ceiling or wall at high pressure, causing mold and ruining countless furniture and personal items along the way.

Frank and Frankie (son) come out once and they determine ""it's not our fault"". When we ask, they literally say they don't know what the problem is and don't know what's causing the issue. Frank, this entire plumbing system is your job, you literally replaced it and chose the material yourself. Well, it could be faulty copper pipes from China, he says. Maybe it was a bad batch. Then he starts pointing the finger at other variables.

Maybe it's the city water pressure, you know the water pressure's too high. Or maybe the water's too acidic, you know, that causes brand new copper pipes (he literally said this) to burst. How about we install a $20K water softener for you?

This makes no sense. We look around at the other homes and buildings on the exact same block. These are old buildings that are using copper pipes and trash plumbing from 40-50-60 years ago. If this was water pressure ""too high for pipes to handle"" or if the water was magically ""too acidic and burning through the copper"", then everyone's damn pipes would be bursting the entire street.

So Frank denies responsibility saying the warranty doesn't qualify for this, despite not being able to explain why the pipes are leaking. Mail him a nice letter stating that we'll take him to court and file a complaint with the license board.

Frank walks back all nice saying he'll do it and please don't escalate this legally. He comes and patches up a few more times for the next 2-3 months, because again, every 2-4 weeks, a pipe in this commercial building explodes randomly. The whole time, as he patches, he doesn't charge a cent...but still has no idea what the cause is. We find this arrangement puzzling but if this is the best ""his warranty"" can offer then we will take it.

Fast forward 2 months and Frank decides he's had enough. HE's no longer sending out his crew out for free to repair pinhole leaks from his own $100K job. He continues to blame the city, the San Jose Water company, China The leaks aren't from issues with his brand new pipes he claims, it must be the water, aliens! He says he's taken photos of all the leaks to prove it's not his problem so he's ready for a fight if it goes to court...despite not even being able to say what the problem is. We hire J Drains, who comes in and does a deep dive on Frank's $100K re-pipe job. We tear open walls and go into the crawl space to inspect every pipe.

We uncover the most incompetent installation of re-pipe I've ever seen. The pipes were messily installed, there were recirculating lines and water heaters connected randomly without any thought and crossing over, they left trash and cut pipe all over the crawl space during the installation years ago because they were too lazy to pick it up - what 2 diff plumbers called ""the shittiest $100K re-pipe I've ever seen.""

In literally 1 week, J Drains finds the root cause (faulty recirculating pump line causing built-up pressures), tears out all the broken recirculating lines and pumps, and wala, no more pinhole leaks.

This was a $100,000+ job from Cupertino Plumbing.

Imagine the worksmanship you can expect from Cupertino Plumbing for your $2,000 water heater, garbage disposal, and clogs.

If you ask contractors who have worked on properties that Cupertino Plumbing has done work on, you'll find very similar stories. There's a reason their commercial reputation is poor - most of their business now is over-charging working families hundreds of dollars for 15 min residential jobs.

PS: if they say you need a water softener, hopefully our experience is enough to tell you that that's a scam.

Dana M.

Where to begin ... we'll start with the ending. You know you're dealing with a quality vendor based on the way they handle problems. Given the uniqueness of our re-pipe and water softener install, Frank and Frankie and Brandon were linked in pretty closely as things unfolded. They were easy to reach. Their team was always responsive. Any adjustments that needed to be made on our job were handled quickly and professionally. They went above and beyond in very unusual circumstances.

We've used Cupertino Plumbing on two re-pipe jobs. We'll use Cupertino Plumbing again. We're referring Cupertino Plumbing to those we know who need their services.

Ann L.

Applause to the Cupertino Plumbing team for replacing my water heater and furnace combo in an expedite manner.
Danny came over for estimates in the morning. Frank contacted me in the afternoon and told me that he would try to procure the water heater/furnace combo. Next morning, he called, emailed me an estimate and explained the details to me. I consented and the contract was signed on the same day.
Mario came over by himself, replaced and installed the water heater/furnace combo plus all the connecting hoses and pipes inside the closet wall in the balcony. He even skipped lunch till the end of the day as he was eager to finish the job. Kudos to Mario for being congenial, solicitous, and knowledgeable in his trade!

Cindy B.

Cupertino plumbing has been very good to me. In the last month, they have installed a new tankless water heater, repla ced faucets, cleaned drains and fixed my garbage disposal. A ll was done well and in short order. Came to know Danny, Frankie, Mario and Brandon and feel confident and safe with each one of them! Highly recommend!

Brandy G.

So last year I needed my master bath need to be remodeled because it was falling apart. So I called these guys they are my plumbers. I was so excited that they did remodeling. Well $20 thousand dollars and a year later my new bathroom is falling apart. But they are great plumbers.

Sean B.

I highly recommend Danny, Brandon, and the entire team at Cupertino Plumbing. From the very beginning, Danny was responsive and clear in the work that needed to be done. He took pictures underneath our home and showed us the issues we had going on. Whenever I had any questions, Danny responded in a timely manner and addressed any and all concerns I had. Not only did Danny and Cupertino Plumbing address the piping issues, they also helped with hot water and water pressure. Because of the Cupertino Plumbing team, I have hot water within seconds of turning on any faucet in. my home and the water pressure is amazing. After all the work was done, Danny even stopped by 1 more time for one final look over to make sure everything was okay. I truly feel that Danny, Brandon, and Cupertino Plumbing treated my home as if it were their own. My family has been using Cupertino Plumbing for years and this experience only reinforced why that is the case. I will continue to call them if I have any leaks, water pressure, or hot water concerns and will recommend them to all my family and friends.

Sharon N.

Very happy with the service that Cupertino Plumbing and Mario provided. Mario arrived on time and was very pleasant, professional and knowledgeable. He was able to assess my plumbing problem and address the issue right away. He was mindful to the Covid-19 protocols which helped ease any stress I had about having someone inside my home. I would definitely use Cupertino Plumbing for any future plumbing issues I may have.