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Emergency plumber fixing a main water pipe leak in the front lawn for a homeowner in Sunnyvale. Professional main line repair and burst pipe replacement service in Los Altos and Cupertino.
Emergency Plumbing & Repairs in Sunnyvale & The South Bay




Burst Pipe? Leaking water heater? 
Image by Marissa Rodriguez
Fully stocked plumbing van for same day repair. We fix 90% of issues on site without ordering parts. Emergency plumber Sunnyvale, Cupertino, Saratoga & Campbell.
Faster Solutions, Fewer Delays
Your time is valuable. We don't just show up to diagnose; we show up to repair. Our vans are fully stocked mobile warehouses with thousands of top-quality parts.
We complete 90% of repairs on the spot without needing to order parts, saving you time and money.
 
The Promise: Honest, straightforward pricing before any work begins.
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Emergency Repairs

Fast Response for Critical Failures.
 
Whether it's a Sunday morning flood or a weekday evening leak, you shouldn't have to wait for help. Our team is on standby every day of the week to handle critical failures immediately—with no extra charge for weekend service.
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Key Services:
💥 Burst Pipes & Slab Leaks
🚿 Bathroom Flooding & Sewage Backups
🔥 No Hot Water / Leaking Heaters
🛑 Water Main Breaks
General Plumbing Repairs
 
Trusted Experts for Everyday Fixes.
From a dripping faucet to a running toilet, we handle all jobs, big or small, with the same professional care.
Key Services:
  • Faucet & Fixture Replacement
  • Garbage Disposal Repair
  • Leak Detection
  • Pressure Regulator (PRV) Valves
Serving Sunnyvale, Santa Clara, Mountain View, and surrounding areas. We can often be at your door while other plumbers are still checking their voicemail.
Image by Marissa Rodriguez

Real Results: Sunnyvale Case Study

Before and after main water shut-off valve replacement by a plumber in Sunnyvale; replacing corroded gate valves with ball valves to prevent leaks and ensure safety during water heater replacement or emergency plumbing repairs.
Project Spotlight: Main Shut-Off Valve Rebuild
The Problem: A homeowner's main water shut-off valves were corroded and dripping. The old "Gate Valves" were stuck, making it impossible to turn off the water in an emergency. 
 
The Comet Solution: We performed a total rebuild. We removed the faulty hardware and installed modern, easy-to-use Quarter-Turn Ball Valves along with fresh copper piping.
The Result:
  • Drip-free reliability.
  • Easy 90-degree shut-off capability for future safety.
  • Hassle-free operation.
Image by Mulyadi

What your neighbors are saying

5-Star customer review for Comet Plumbing. Homeowner praises Andrew for professional house re-piping, new valve installation, and faucet replacement services.
Image by Marissa Rodriguez
FAQ
This section answers common questions.
  • Do you charge extra for emergency plumbing on weekends?
    Never. We pride ourselves on offering the same honest, low prices whether it's an average Tuesday or Christmas Eve.
  • How fast can you get to Sunnyvale?
    We are local operating in Sunnyvale, Santa Clara, Mountain View, Los Altos, Cupertino, Saratoga, Campbell, and San Jose ready for same-day dispatch.
  • What should I do while waiting for a plumber?
    If you have a burst pipe, locate your main water shut-off valve (usually in the garage or front yard) and turn it clockwise (or perpendicular if it's a ball valve) to stop the flow.
Comet plumbing & sewer co, plumber sunnyvale, plumber los altos, plumber mountain view

100 S. Murphy Ave., Ste. 200

Sunnyvale, CA 94086
Tel: 408-502-0932

Directions

Service Areas (CA)

  • Sunnyvale

  • Santa Clara

  • Mountain View

  • Cupertino

  • Los Altos

  • Saratoga

  • San Jose

  • Campbell

Open 7 Days a Week

Mon - Sat: 7:30 AM - 8:00 PM

Sun: 8:00 AM - 8:00 PM

Emergency Dispatch Available

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