All reviews for Knockout Plumbing & Repipe Inc.

Knockout Plumbing sent someone to my house right away to look at my shower problem. They helped me understand my problem and fixed what could be fixed in a day. They were very professional and straightforward.

Exceptional service! Francisco was incredibly responsive and professional, even arriving for an emergency late at night. He quickly diagnosed the issue and resolved it within minutes. The quality of the service was outstanding, and I highly recommend them for any plumbing needs.

The Knockout Plumbing did a great work. They did the initial assessment with honesty and in detail. The other company who came to bid was like a talking machine and didn’t accommodate to our special circumstances. About 30 to 40% of our house already had brand new piping. We didn’t want that part replaced.

Excellent plumbing service. They were very professional and kept their promise in following up. I highly recommend to use their services.

They came and re-piped my entire place. They did a fantastic job! I highly recommend them.

Great service, with a fair price. They also patiently explain to me throughout the process.

Jason was very professional answer all my questions. I got the job done pretty quickly.

I have a 60 year old 4-plex rental building in San Jose. The water pipes are original galvanized iron pipes and they started affecting water quality for my tenants in the last 12 month or so. After getting estimates from 3 licensed plumbing companies, I hired Knockout Plumbing and Repipe to do the project. All 3 companies have extensive experience in repiping project. They all have good customer reviews on both Google and Yelp. Knockout gave me some discount. They started the job on May7th and finished the job on May 11th. Only in the first two days, they needed to shut off water for about 10 hours during the day. They use top quality parts. Their young plumbers are well-trained and professional. After the entire plumbing system was replaced, they did extensive test to make sure no water pipe leaks. They took care of San Jose City inspection well. The two inspections were scheduled timely and went through smoothly. The owner, Edgar, is professional and easy to work with. His younger brother Juan and his staff member Kevin also left me with very good impression. I highly recommend this company to anyone who has similar needs.

We had an outgoing drain pipe leak under the house which was attracting rodents. We called Knockout Plumbing because we used them previously on an exterior leak.
Martin came and looked at the situation and gave us a very reasonable quote. He then did the repair to our satisfaction. Two days later the sink backed up and we called Knockout to come and figure it out, thinking that they must have done something to cause the back up. It seems that there was a clog in the pipe that we were unaware of, and the hole in the pipe which was repaired had been helping the pipe to drain by allowing air to assist the water past the clog. Anyway, Martin dispatched a team member, Jason, who did an excellent job of clearing the clog and also showed by video camera inside the pipe how there were some other issues we need to address down the line. Upshot: Knockout Plumbing is very professional, reasonably priced, and they really care about their customer when it comes to overall plumbing issues and resolutions.

We had an emergency (Kitchen faucet broke) and Kevin came in and gave us a very fair estimate. He did not try to take advantage of the situation. Then I gave a 10% deposit. When the parts came in after about a week, Kevin came in again and did a very professional job. Also he is very polite and respectful. I would hire him again in a new york minute

Knockout Plumbing was very responsive to my request for a quote to unclog my bathtub/shower drain. The technician was prompt and professional throughout the time he was unclogging the drain. He even put on booties prior to entering my home. I found their price competitive. I highly recommend Knockout Plumbing for any of your plumbing needs.

Knockout plumbing replaced my sewer line which was outside the house on my driveway. These guys are absolute wonderful to work with. They gave reasonable quotes and finished the work within the timeline as promised. Once they started digging they realized the city connection is much deeper than originally anticipated. But they did not even charge me for that. Kevin and Edger are so helpful. They even helped to put remaining dirt in my backyard upon request. I would definitely hire them again.

These guys were great! Efficient, affordable, respectful, funny, and very communicative. We did a whole house recipe job and they were in and out in under a week. They know their stuff and got things done in a timely manner while always keeping us informed with what they were going to be doing.

Would highly recommend if you’re looking for a plumbing or repiping job done well!

Called for an estimate for drain repair. They came out promptly, gave a reasonable estimate, and arranged for the work to be done on the same day. Plumbers then arrived promptly and were able to complete the work without incident. One-year warranty on workmanship and materials used.

One of the best handymen to help you with your plumbing needs. Thank you for helping me make my rent apartment feel like home again!

Everything was fine, the plumber was courteous and knowledgeable and friendly. Friendly. The only odd thing was I didn't get an invoice with the visit. I was told that once my check had been processed it would be sent to me in email. That is unusual, typically a written invoice/estimate is presented before the work is done. Still don't have any proof that your company actually did this work at this time.

Update: I called their office and they emailed me the paperwork.

Highly impressed by Francisco Cabrera and their team with the gas repiping service! The team was punctual, professional, and extremely thorough in their work. They took the time to explain the entire process and ensured everything was up to code for safety. The job was completed efficiently, and they left the area clean and tidy. Our home feels much safer with the new gas lines in place, and we’ve had no issues since the work was completed. I definitely recommend this service to anyone needing gas repiping. They also offer to apply for the city permit (no work needed from my side) which is critical for home owners for long term safety – outstanding work!

Last but not least, they offered the reasonable price considering the amount of work they've done.

Very professional and experienced. Called them for bathroom shower water leak from sprout and they fixed in minutes.

Martin and his teams are very professional. I asked them to change the entire water, drain, and gas system. The team completed the job really fast with quality. I would definitely recommend his team to anyone who needs huge updates on the pipes at your house!

Update on 12/2/25: I've called knockout for follow-up work several times since our repipe. They've continued to be professional and accommodating of my schedule. Their rates are fair and I am happy with the quality of work. Also happy to report no problems with our repipe last year.

Original review:
Edgar and his team were extremely professional and provided a whole home repipe, drain replacement, and water softener/RO installation within 1 month of me contacting them. I had quotes from about 7 different companies. They were able to price match a competitive offer and provide timely service.

When they were working, they taped and sealed everything off so that my house stayed as clean as possible. The guys even reminded me to close my garage door when they were done for the day which was thoughtful. Definitely would use again if I ever move to another house that needs plumbing work.

Had a great experience working with Kevin and Juan! They helped me address the main line flooding issue late night. They inspected the issues carefully, worked until 10pm to ensure the issue is fully resolved and shared video to help me understand the problem and fixes. Highly recommend this business!