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Greentech Electric Solutions vs Therma
Santa Clara Electrical Contractors Comparison · Updated March 2026
You're comparing an electrical contractor with a commercial mechanical fabrication specialist - these companies serve fundamentally different project types.
| Greentech Electric Solutions | Therma | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.6 |
| Years Licensed | 15 years | 9 years |
| License # | 950830 | 1027316 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Campbell, CA | San Jose, CA |
| Website | — | www.therma.com |
Key Differences
What Customers Say
Therma
Customers consistently praise Therma's technical precision, professional approach, and high-quality custom fabrication work on commercial mechanical projects.
Key Takeaway: Therma has established customer feedback documenting their commercial capabilities while Greentech lacks substantial review history, requiring homeowners to request references directly.
Customer Reviews
Greentech Electric Solutions
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 Greentech Electric Solutions if...
- ✓ You need electrical work for your home including panel upgrades, rewiring, lighting installation, or electrical troubleshooting
- ✓ You value a contractor with 15 years of experience navigating electrical code changes and handling complex residential electrical challenges
- ✓ You're willing to request references directly since the company has limited public review history
- ✓ Your project is residential or commercial electrical rather than mechanical fabrication
Consider Therma if...
- ✓ You own commercial or industrial property requiring custom HVAC duct manufacturing or specialty mechanical fabrication
- ✓ Your project involves medical gas systems, process equipment fabrication, or precision metal work for industrial applications
- ✓ You need a contractor with documented expertise in high-volume manufacturing and custom fabrication capabilities
- ✓ You're looking for a mechanical contractor with proven commercial project experience in Silicon Valley
Questions to Ask Before Hiring
- → Ask Greentech for recent customer references and photos of completed projects similar to yours to compensate for limited online reviews
- → Ask Greentech how they handle communication during projects and what their typical timeline looks like for your type of electrical work
- → Confirm which contractor actually serves your project type - residential electrical work requires Greentech, while commercial mechanical fabrication requires Therma
The Bottom Line
For residential electrical work, Greentech Electric Solutions is your only relevant option here - Therma doesn't serve that market. Greentech's 15 years of electrical licensing provides solid experience for home electrical projects, from panel upgrades to rewiring. The lack of review history is a concern, so request specific references from recent customers with similar projects before signing a contract. If you actually need commercial mechanical fabrication or custom HVAC duct manufacturing, Therma has strong documented capabilities and customer praise for their technical precision and professional service.
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Frequently Asked Questions
No. Therma is a mechanical contractor specializing in commercial HVAC fabrication and industrial systems, not residential electrical work. For home electrical projects, you need an electrical contractor like Greentech Electric Solutions.
While Greentech has 6 more years of licensing, this comparison isn't meaningful since they work in different trades. The relevant question is whether each has sufficient experience in their specialty - both qualify as established contractors in their respective fields.
Therma serves commercial clients who may be more likely to provide formal feedback, while Greentech's residential electrical customer base may not have left online reviews. This doesn't indicate quality differences, but it does mean you should ask Greentech directly for references from recent projects.
No. Both companies maintain workers compensation insurance and carry identical $25,000 bonds, providing the same baseline financial protections. Both meet California's contractor insurance requirements.
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See our ranked list of top electrical contractors in Santa Clara.
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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 13, 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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