Compare Local Pros
Norcal Electric vs Therma
Santa Clara Electrical Contractors Comparison · Updated March 2026
You're comparing a residential electrical specialist with 20 years experience to a commercial mechanical contractor who doesn't do home electrical work.
| Norcal Electric | Therma | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.6 |
| Years Licensed | 20 years | 9 years |
| License # | 864395 | 1027316 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Santa Clara, CA | San Jose, CA |
| Website | norcal-electric.com | www.therma.com |
Key Differences
What Customers Say
Norcal Electric
Customers consistently praise Norcal Electric for punctual arrivals, clean residential installations, transparent pricing, and clear explanations throughout home electrical projects.
Therma
Customers highlight Therma's high-quality manufacturing capabilities, precision fabrication work, and professional handling of commercial and industrial mechanical projects.
Key Takeaway: Norcal Electric's feedback centers on homeowner communication and residential service qualities, while Therma's reviews focus on industrial manufacturing precision and commercial project capabilities.
Customer Reviews
Norcal Electric
Fantastic experience! I had lighting installed and multiple electrical repairs done, and everything was completed quickly and efficiently. They were extremely polite, kind, and professional, and the q...
Alex and his team at NorCal Electric installed our Enbrighten permanent outdoor Wi-Fi Eternity Lights and the work is excellent. The install is clean, everything looks intentional, and they even added...
I have been doing business with NorCal Electric for years now, and they have consistently delivered excellent service. He is always on time, respectful, and professional. He is always transparent abou...
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 Norcal Electric if...
- ✓ You need residential electrical work of any kind—lighting, outlets, switches, panel upgrades, or EV charger installation
- ✓ You value a contractor with 20 years of experience diagnosing issues in homes and communicating clearly with homeowners
- ✓ You want someone with an established track record of punctual, clean installations in residential settings
- ✓ You need transparent pricing and explanations tailored to homeowner decision-making rather than commercial project management
Consider Therma if...
- ✓ You're a commercial facility manager needing custom HVAC ductwork fabrication
- ✓ Your project involves industrial mechanical systems, medical gas installations, or specialty metal fabrication
- ✓ You require high-volume manufacturing capabilities for mechanical components
- ✓ You're not looking for residential electrical services, as this is outside Therma's business focus
Questions to Ask Before Hiring
- → Ask Therma directly: Do you perform residential electrical work, and if so, can you provide references from home projects similar to mine?
- → If considering Therma for electrical work, ask what percentage of their business is residential versus commercial and how many home electrical projects they complete annually
- → Ask Norcal Electric for a timeline and detailed quote for your specific electrical project to establish clear expectations
The Bottom Line
If you need residential electrical work, choose Norcal Electric without hesitation. They specialize in exactly what homeowners need, with 20 years of experience in home projects, consistent feedback about clear communication and transparent pricing, and a track record of punctual, clean installations. Therma is an excellent commercial mechanical contractor, but they serve industrial and commercial clients needing fabrication and mechanical systems, not homeowners needing electrical work. Contact Norcal Electric for your home electrical project.
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Frequently Asked Questions
Therma specializes in commercial mechanical contracting and industrial fabrication, not residential electrical work. Their expertise centers on HVAC duct manufacturing, custom metal fabrication, and commercial mechanical systems. For home electrical projects like lighting, outlets, or panel work, they're not the appropriate contractor.
The experience gap is secondary to the specialization gap. Norcal Electric's 20 years specifically involves residential electrical projects with the communication style, pricing approaches, and problem-solving relevant to homeowners. Experience in commercial mechanical work doesn't translate to residential electrical expertise.
If you needed custom metal fabrication or specialized mechanical work for an unusual residential project, Therma's manufacturing capabilities could be relevant. However, for standard residential electrical services—which is what most homeowners need—they're not positioned to serve that market.
Both are licensed contractors in Santa Clara County with proper insurance and bonding, which may trigger directory matching algorithms. However, their actual service areas don't overlap for typical homeowner needs. This highlights the importance of verifying a contractor's actual specialty beyond their license classification.
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 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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