Compare Local Pros
NRG Electric vs Therma
Santa Clara Electrical Contractors Comparison · Updated March 2026
NRG Electric specializes in residential electrical work while Therma is a commercial mechanical contractor with no residential service history.
| NRG Electric | Therma | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.6 |
| Years Licensed | 4 years | 9 years |
| License # | 1088154 | 1027316 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Jose, CA | San Jose, CA |
| Website | www.electric-nrg.com | www.therma.com |
Key Differences
What Customers Say
NRG Electric
Customers emphasize NRG Electric's communication practices, scheduling reliability, and professional residential service execution across diverse home electrical projects.
Therma
Customers praise Therma's manufacturing capabilities, dimensional accuracy for industrial components, and technical expertise in commercial mechanical fabrication.
Key Takeaway: NRG Electric's feedback centers on residential service expectations like communication and punctuality, while Therma's reviews focus exclusively on commercial manufacturing quality and industrial fabrication capabilities.
Customer Reviews
NRG Electric
Nathan Garcia did an excellent job in communicating every step of the way, and EV charger installation was done efficiently and effectively.
Huge rewiring project. Took quite a bit longer than expected but they did a good job in the end.
We have used NRG Electric's services twice now and have been very pleased each time. Initially they installed gemstone outdoor lighting on our home which came out amazing. More recently when we wanted...
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 NRG Electric if...
- ✓ You need residential electrical work of any kind, as this is NRG Electric's core business with documented experience across panel upgrades, rewiring, EV chargers, and home installations
- ✓ Communication and scheduling reliability are priorities, as customer feedback consistently highlights responsiveness, clear pricing explanations, and punctuality
- ✓ Your project requires permitting and inspection coordination, which NRG Electric handles routinely for residential electrical work
- ✓ You value working with a contractor who maintains high owner involvement throughout residential projects
Consider Therma if...
- ✓ You need commercial HVAC duct manufacturing or custom metal fabrication for an industrial facility, which is Therma's documented specialty
- ✓ Your project involves specialty ducting components, custom electrical gutters, or precision industrial fabrication requiring high-volume manufacturing capabilities
- ✓ You're operating a commercial or industrial facility in Silicon Valley requiring mechanical contracting services for plumbing, medical gas systems, or process equipment
Questions to Ask Before Hiring
- → Ask Therma directly if they perform any residential electrical work, as all available data indicates exclusive commercial mechanical focus
- → Ask NRG Electric for references from projects matching your specific electrical needs, particularly if your project involves complex diagnostic work or whole-home rewiring
- → Confirm project timeline expectations and scheduling practices with whichever contractor you engage
The Bottom Line
For any residential electrical project, choose NRG Electric without hesitation. Therma is a commercial mechanical contractor with no demonstrated residential service capability or electrical contracting expertise. NRG Electric's 4 years of licensing are directly relevant to home electrical work, with documented experience across the full range of residential electrical projects. Their customer feedback confirms reliable communication, scheduling, and professional execution. Therma's strengths in commercial duct manufacturing and industrial fabrication are simply irrelevant to homeowner needs.
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Frequently Asked Questions
This comparison highlights a critical mismatch that homeowners need to recognize immediately. Therma's expertise is in commercial HVAC manufacturing and industrial mechanical systems, not residential electrical work. If you're a homeowner needing electrical services, NRG Electric is the appropriate choice from these two options.
No, those 9 years are in commercial mechanical contracting, not residential electrical work. NRG Electric's 4 years are directly relevant to home electrical systems, panel upgrades, and residential code compliance. Experience only matters when it's in the right field.
Mechanical contractors specialize in HVAC, plumbing, and mechanical systems, not electrical systems. California requires specific electrical contractor licensing for electrical work. Therma's license and experience are in mechanical contracting, while NRG Electric holds the appropriate electrical contractor credentials.
You would need to hire separate contractors for each trade. NRG Electric handles residential electrical needs, while Therma serves commercial mechanical projects. For residential HVAC work, you would need a different contractor entirely, as Therma focuses on commercial duct manufacturing rather than residential HVAC installation or service.
Looking for the Best?
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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