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Canzam Electric vs Therma
Santa Clara Electrical Contractors Comparison · Updated March 2026
These contractors serve completely different markets: Canzam Electric handles electrical work while Therma is a commercial mechanical contractor specializing in HVAC and industrial fabrication.
| Canzam Electric | Therma | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.6 |
| Years Licensed | 36 years | 9 years |
| License # | 594761 | 1027316 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Campbell, CA | San Jose, CA |
| Website | www.canzamelectric.com | www.therma.com |
Key Differences
What Customers Say
Therma
Customers consistently praise Therma's technical quality, custom fabrication precision, and professional approach to commercial mechanical projects.
Key Takeaway: Therma has documented customer feedback highlighting manufacturing capabilities and quality standards, while Canzam Electric has limited review history despite decades of operation.
Customer Reviews
Canzam Electric
No reviews available
Therma
Did Stanford blood donation here today.
Can't say enough about this company this group of guys the work that they do and the high technology that they are getting involved in. There is a manager Paul there, great guy hard worker. The compan...
Top notch mechanical contractor. Very professional.
Consider Canzam Electric if...
- ✓ You need electrical work such as panel upgrades, circuit installations, lighting, or code compliance updates
- ✓ You prefer a contractor with decades of experience navigating California electrical codes and local building standards
- ✓ Your project is residential or straightforward commercial electrical work in the Campbell area
- ✓ You're comfortable proceeding with a contractor that has limited recent customer feedback available
Consider Therma if...
- ✓ You need commercial HVAC duct manufacturing, custom metal fabrication, or industrial mechanical systems
- ✓ Your project involves specialty components like medical gas systems, steam systems, or precision ducting
- ✓ You're managing a commercial or industrial facility in Silicon Valley requiring high-volume manufacturing capacity
- ✓ You value documented customer feedback praising technical capabilities and manufacturing quality
Questions to Ask Before Hiring
- → For Canzam Electric: Ask for recent project references and examples of work similar to yours to supplement limited review history
- → For Therma: Confirm they handle projects of your scope, as their focus appears primarily commercial and industrial rather than residential
- → Ask both contractors to clearly explain their specific capabilities for your project type to avoid scope mismatches
The Bottom Line
This comparison only makes sense if you've misidentified what work you need done. For electrical projects, Canzam Electric is your only option here, bringing 36 years of licensed experience though you should request recent references given limited review data. For commercial mechanical systems, HVAC duct manufacturing, or industrial fabrication, Therma is the appropriate contractor with documented customer satisfaction in that specialized field. Identify whether your project is electrical or mechanical first, then contact the relevant company.
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Frequently Asked Questions
You likely shouldn't be unless you misunderstood their specialties. Canzam Electric handles electrical systems while Therma handles mechanical systems like HVAC and plumbing. If you need electrical work, choose Canzam. If you need commercial mechanical systems or custom fabrication, choose Therma.
No. Therma is a mechanical contractor specializing in commercial HVAC manufacturing and industrial fabrication, not electrical work. For residential electrical needs, you would contact Canzam Electric, though their experience appears more general than residential-focused.
The 36 years demonstrates survival in a competitive market and deep code knowledge, which matters for complex electrical troubleshooting. However, limited reviews mean you should ask for recent references directly to confirm current service quality and responsiveness before hiring.
Unlikely. Their customer feedback and project descriptions focus on commercial manufacturing, custom fabrication, and industrial facilities. They appear oriented toward high-volume commercial clients rather than residential service calls, so a residential HVAC company would be more appropriate.
Looking for the Best?
See our ranked list of top electrical contractors in Santa Clara.
Other Santa Clara Electrical Contractors Comparisons
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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