Copper Repiping in Sunnyvale, Plumber Sunnyvale & Silicon Valley.

" Your local plumbing service in
San Jose & the South Bay"​
  • Water supply plumbing experts.
  • Rusty colored water, call us now!
  • From the water meter to the house, we do it!
  • Experienced plumbers serving your area.
  • All work guaranteed!
  • For a free estimate call us (408) 502-0932


​       Comet Plumbing and Sewer company specializes in domestic water supply repair and replacement in Sunnyvale, San Jose, Mountain View, Cupertino, Santa clara, Los Altos and Silicon Valley, we are licensed, fully insured and bonded. Our qualified plumbers have performed small and large jobs in your area and have over 10 years field experience in copper pipe, PEX, CPVC, PVC schedule 40/80 installations & water pressure loss diagnostics. Low water pressure in your house is akin to rusty colored water flowing out of your shower or faucets. Rusty pipe patches on the exterior of your original water supply pipes usually in your crawl space are red flags in the plumbing world and are often due to corrosion or improper plumbing when steel and copper are mixed in your house without using Brass as a buffer. Comet plumbing and sewer company will make the best recommendation to increase your water pressure in your house with either a full repipe or a partial repipe in copper tubing. Copper is the best material for water supply and meets code for domestic and commercial applications. Call us now for a free crawl space inspection of your home and leak detection service if you suspect any leaks or have elevated water bills.
      Copper repipes eliminate rust, water leaks, low pressure to your faucets and are a good selling point if you decide to sell your home one day. Copper repipes can take 2-3 days to complete and will also increase the life of your plumbing fixtures.  Your water heater can leak due to rust particles and corrosion from the your old pipes. Our plumbers provide a next to none plumbing service with free written estimates 10-15% lower than other bids. Our service plumbers in Sunnyvale, San Jose and other cities carry top notch equipment for copper repipes. Our Plumbers will do a free crawl space inspection of your home and install new water pipes in your home giving you peace of mind and great value for your money. Call our BBB A rated plumbers now for an emergency Plumber. No Extra charges for holidays, weekends or nights, at your door.


Great Company,Great Service Techs.I had a plumbing problem that required a plumbing contractor not some guy in a truck with a 50' power snake .
The man from Comet was very professional Did not talk down to me as others have .Assessed the problem gave me a very reasonable estimate and preformed the work on time.And no extra charges!!!!! I would use this company again and do not hesitate and recommend it. Its nice to know there are still honest and reliable Plumber Contractors out there
Bruce Houseman   12/5/2011

Richard K. April 12, 2011 
Los Altos plumber. ★★★★★
I found this company in my Los Altos Yellow Pages. They checked out my hot water heater which was very noisy and recommended we change it. I never thought about buying a larger capacity water heater for our home until the plumber had mentioned it. So not only do I have a new heater but also more hot water. Now the family will be happy :)

Deepak S. March 09, 2012 
Reliable and professional service. ★★★★★
My family and 
I just moved in, my mother was alarmed when the kitchen sink wasn't draining properly. The owner of Comet Plumbing came quickly to check the plumbing under the sink which I knew was old.

Andrew unblocked the clog and installed new pipework beneath the sink. I am very grateful,it was only $99.00 for this great service.


100 S. Murphy Ave.

Ste. 200

Sunnyvale, CA 94086

Tel: 408-502-0932
Fax: 800-805-9025

​Toll Free: 1800-805-9025