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Alert Plumbing vs Comet Plumbing And Sewer
Santa Clara Plumbing Contractors Comparison · Updated March 2026
Alert Plumbing brings 6 additional years of experience, while Comet stands out for communication and detailed explanations.
| Alert Plumbing | Comet Plumbing And Sewer | |
|---|---|---|
| Rating | ★ 4.4 | ★ 4.9 |
| Years Licensed | 21 years | 15 years |
| License # | 853062 | 951887 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Jose, CA | Sunnyvale, CA |
| Website | www.alertplumbinginc.net | www.call-comet.com |
Key Differences
What Customers Say
Alert Plumbing
Alert Plumbing customers emphasize rapid execution and efficiency, with multiple mentions of same-day service and projects completed in surprisingly short timeframes.
Comet Plumbing And Sewer
Comet Plumbing customers consistently highlight Andrew's communication skills, detailed problem explanations, and transparent pricing throughout the service process.
Key Takeaway: Alert prioritizes speed of completion while Comet focuses on keeping customers informed, representing different service philosophies that both deliver satisfaction.
Customer Reviews
Alert Plumbing
I called them because there was a strange smell coming from behind our washer and dryer and they discovered it was from the upstairs unit that had a leaky water heater. They were quick to find and dia...
Albert and his team are the best! I needed emergency service in Hollister today and they were very quick with getting back to me and was able to have a technician out to the job site within 3 hours. T...
Alert plumbing you guys are great thanks for the fastest service yesterday replace my water heater faucet valve and lines and hooking my water heater up and Raul jr. Was fast and a good price these gu...
Comet Plumbing And Sewer
Comet plumbing did a excellent job at my home . A fair price, competent, knowledgeable, efficient , clean and professional! Thank you Andy, I will be calling you for future issues if needed.
We had a drain issue right around the holidays and Andrew fixed it that same day. He and his team have always done great work at a fair price!
Andrew from Comet Plumbing was wonderful! He helped install two clean-outs and fixed a root infested pipe for a reasonable price (plus nice discount). I'll definitely be using them again!
Consider Alert Plumbing if...
- ✓ You need work completed quickly with minimal disruption, particularly for projects like full home repiping where Alert's track record shows single-day completion
- ✓ Your home is older and may present complex diagnostic challenges where 21 years of experience matters
- ✓ You value speed and efficiency over extensive communication, preferring technicians who identify problems and execute solutions rapidly
- ✓ You're in San Jose proper or south toward Hollister where Alert has documented service history
Consider Comet Plumbing And Sewer if...
- ✓ You want detailed explanations of problems and transparent communication throughout the project, including camera inspections to see issues firsthand
- ✓ Fair pricing is a priority and you appreciate competitive quotes before committing
- ✓ You need weekend or holiday availability and value Andrew's documented responsiveness during off-hours
- ✓ You're located in Sunnyvale or northern Santa Clara County where Comet is based
Questions to Ask Before Hiring
- → Ask both contractors for references from projects similar to yours in age and scope
- → Request a detailed written estimate that breaks down labor and materials to compare pricing approaches
- → Ask how they handle unexpected complications discovered during work and whether pricing remains firm
- → Confirm typical project timelines for your specific work and whether single-day completion is realistic
The Bottom Line
Both contractors are properly licensed veterans with full insurance protection, making either a safe choice. Alert Plumbing's 21-year history provides deeper experience for complex diagnostics and their efficiency shines on projects requiring fast completion. Comet Plumbing excels at customer communication and transparent pricing, making them ideal if you want detailed explanations throughout your project. For most homeowners, the decision comes down to priority: choose Alert if execution speed matters most, or Comet if you value clear communication and competitive pricing. Either way, you're working with an established, insured professional.
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Frequently Asked Questions
For straightforward repairs like faucet replacement, probably not. But for complex issues like tracing leak sources under concrete or repiping older homes with hidden damage, Alert's additional six years means they've diagnosed and solved thousands more unusual problems. That pattern recognition helps when your project reveals unexpected complications.
Comet receives specific feedback about fair pricing and competitive quotes, suggesting they may come in lower on estimates. Alert's customers emphasize speed and efficiency, which can reduce overall project disruption costs. Request detailed written quotes from both to compare based on your specific project scope.
Both companies provide same-day emergency response, but Comet has specific customer mentions of weekend and holiday availability with Andrew responding within hours. Alert also handles emergencies but customer feedback focuses more on weekday rapid response. Ask both about their current weekend availability before deciding.
Alert has documented experience completing full repiping in a single day, minimizing disruption to your household. Comet handles full re-pipes as well and provides detailed communication throughout larger projects. If speed is your priority, Alert's track record stands out; if you want thorough explanations at each phase, Comet's communication approach may suit you better.
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How We Compare Contractors
License Verification
All license data is sourced from official California CSLB records and verified regularly.
Review Analysis
Customer reviews are aggregated from Google and analyzed to identify patterns in service quality.
Detailed Comparison
We analyze credentials, insurance, experience, and feedback to highlight meaningful differences.
Not all licensed contractors are created equal. While a valid license is the baseline requirement in California, contractors can vary significantly in experience, insurance coverage, and customer satisfaction.
- Experience matters: A contractor with 15+ years of experience has likely encountered and solved problems that newer contractors haven't faced yet.
- Workers' compensation protects you: If a contractor without workers' comp insurance has an employee injured on your property, you could be held liable.
- Reviews reveal patterns: Individual reviews can be misleading, but patterns across many reviews often reveal a contractor's true strengths and weaknesses.
- Bond amounts vary: A contractor's bond provides financial protection if they fail to complete work as agreed. Higher bonds offer more protection.
Taking time to compare contractors on these factors can save you from costly mistakes and help ensure your project is completed by a qualified professional.
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified March 12, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
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