Compare Local Pros
American Green Energy vs Therma
Santa Clara Electrical Contractors Comparison · Updated March 2026
These companies serve completely different markets: American Green Energy installs residential solar systems while Therma specializes in commercial mechanical contracting and industrial fabrication.
| American Green Energy | Therma | |
|---|---|---|
| Rating | ★ 4.9 | ★ 4.6 |
| Years Licensed | 2 years | 9 years |
| License # | 1116749 | 1027316 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Jose, CA | San Jose, CA |
| Website | amgreen.us | www.therma.com |
Key Differences
What Customers Say
American Green Energy
Customers consistently appreciate the direct approach of working with actual installers rather than salespeople, praising straightforward pricing and professional explanations of the solar installation process.
Therma
Customers emphasize the high quality of custom fabrication work and manufacturing capabilities, with particular praise for dimensional accuracy and professional service on industrial projects.
Key Takeaway: American Green Energy's reviews focus on the sales experience and residential customer service, while Therma's reviews highlight technical manufacturing quality and commercial project execution.
Customer Reviews
American Green Energy
TenÃa una instalación hecha por sunroof y se me apagaba las luces de la casa Hablé con los instaladores de amgreen y me mostró que la compañÃa anterior hizo mal trabajo Arreglaron el problema y ...
Me pusieron paneles en mi casa en salinas. Muy recomendable. Ahora solo pago $120 al mes . Me ayudaron con el préstamo de la instalación. Me lo recomendó un amigo que le hicieron también su casa. ...
Reliable and best prices. Very recommended. Got small system but was the best quote around. Not sales person they are actually installers selling the system.
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 American Green Energy if...
- ✓ You need a residential solar installation or agricultural solar system for a barn or outbuilding
- ✓ You prefer dealing directly with the actual installers rather than commissioned sales representatives
- ✓ You're interested in small promotional solar systems with fixed monthly payments or battery storage options
- ✓ You value straightforward pricing and explanations in English or Spanish
Consider Therma if...
- ✓ You manage a commercial or industrial facility requiring HVAC ductwork manufacturing or mechanical systems
- ✓ Your project involves custom metal fabrication, specialty ducting components, or precision industrial equipment
- ✓ You need medical gas systems, plumbing, or steam system installation for a commercial building
- ✓ You want a contractor with 9 years of experience and an established reputation in Silicon Valley commercial work
Questions to Ask Before Hiring
- → For American Green Energy: Ask for references from solar installations completed at least 18-24 months ago to verify system performance and company responsiveness to warranty issues
- → For American Green Energy: Confirm warranty coverage and ask who handles service calls if the company changes ownership given their newer status
- → For Therma: Verify their residential capabilities if you're a homeowner, as their focus appears entirely commercial and industrial
The Bottom Line
This comparison only makes sense if you're uncertain about which service you need. For residential solar installation, choose American Green Energy, understanding their 2-year licensing history means asking extra questions about warranties and long-term support. For commercial mechanical contracting or custom metal fabrication, choose Therma with confidence in their 9-year track record and Silicon Valley reputation. If you need residential HVAC work, neither company is the right fit.
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Frequently Asked Questions
Therma focuses on commercial mechanical contracting and manufacturing, not residential HVAC service. American Green Energy installs solar systems only, not heating and cooling equipment. Neither company appears equipped for typical residential HVAC replacement or repair work.
Two years licensed means less experience diagnosing hidden roof damage during solar installation and a shorter track record for honoring warranties long-term. They carry required insurance and bonding, but you should verify warranty terms and ask how they handle complications that emerge years after installation.
You likely wouldn't unless you have specialized needs like custom metal fabrication for a home workshop or specialty ductwork for a unique residential project. Their expertise and customer base are clearly commercial and industrial facilities, not typical homes.
The people who actually install your solar system provide the sales consultation, rather than commission-based sales representatives. Customers report this approach feels more honest and technical, with better explanations of the actual installation process and realistic system expectations.
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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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