Compare Local Pros
Simtek Electric vs Therma
Santa Clara Electrical Contractors Comparison · Updated March 2026
You're comparing an electrical contractor with 37 years of experience but no workers comp to a commercial mechanical contractor with full insurance and a different specialty entirely.
| Simtek Electric | Therma | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.6 |
| Years Licensed | 37 years | 9 years |
| License # | 541101 | 1027316 |
| Workers' Comp | — | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Gilroy, CA | San Jose, CA |
| Website | www.simtekelectric.com | www.therma.com |
Key Differences
What Customers Say
Therma
Customers consistently praise Therma's high-quality custom fabrication work, professional service, and technical manufacturing capabilities for commercial and industrial mechanical projects.
Key Takeaway: Therma has documented customer feedback highlighting their commercial mechanical expertise and quality standards, while Simtek has limited review history available to assess customer experience patterns.
Customer Reviews
Simtek Electric
Always great to work with!
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 Simtek Electric if...
- ✓ You need electrical work specifically—panel upgrades, rewiring, lighting, or code compliance issues that require an electrical contractor license
- ✓ You value deep local experience in Gilroy and familiarity with older homes in Santa Clara County that comes with 37 years in business
- ✓ You're willing to verify insurance coverage directly and confirm your homeowner's policy covers contractor injuries, accepting the risk that comes with no workers comp on file
- ✓ Your project doesn't require the specialized commercial mechanical fabrication that Therma offers
Consider Therma if...
- ✓ You need commercial-grade HVAC duct manufacturing, custom metal fabrication, or industrial mechanical systems rather than residential electrical work
- ✓ Workers compensation insurance is non-negotiable for you, and you want the liability protection that comes with a fully insured contractor
- ✓ Your project involves specialty ducting components, medical gas systems, plumbing, or process equipment fabrication that matches their commercial expertise
- ✓ You're a commercial or industrial client rather than a residential homeowner, as their reviews and project types suggest this is their primary market
Questions to Ask Before Hiring
- → For Simtek: Ask specifically about liability insurance coverage and confirm in writing what happens if a worker is injured on your property without workers comp—then verify your homeowner's policy covers this scenario
- → For Therma: Ask directly about their residential project experience and whether your home project fits their typical scope, given their focus on commercial and industrial work
- → For both: Request references from projects similar to yours in size and type to ensure their experience aligns with your specific needs
The Bottom Line
This comparison only makes sense if you're uncertain whether you need electrical or mechanical work. For residential electrical projects, Simtek's 37 years of experience is valuable, but you must address the workers comp gap and verify liability coverage before signing anything. For commercial HVAC duct manufacturing or industrial mechanical systems, Therma has the right expertise and full insurance protection. Most homeowners will need an electrical contractor or a residential HVAC company—Therma appears to be neither. Clarify your project type first, then choose the appropriately licensed and insured contractor for that specific trade.
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Frequently Asked Questions
Simtek is licensed for electrical work while Therma specializes in mechanical systems and HVAC fabrication. If you need electrical work, only Simtek is qualified. If you need commercial mechanical systems or custom ductwork, Therma has the expertise. Choosing the wrong trade specialty means hiring someone not licensed or equipped for your project type.
It's a significant liability concern. Without workers comp, if someone is injured working on your property, you could potentially be held financially responsible for medical bills and lost wages. Before hiring Simtek, verify they have adequate liability coverage and confirm with your insurance agent that your homeowner's policy provides protection in this scenario.
Their reviews specifically mention commercial and industrial work like high-volume manufacturing, custom electrical gutters for industrial equipment, and Silicon Valley facilities. While they may accept some residential projects, their expertise and infrastructure appear oriented toward commercial clients. Ask directly whether they regularly serve homeowners and can provide residential references.
The experience difference matters, but you're comparing different trades. Simtek's 37 years means extensive knowledge of residential electrical systems, older home wiring, and code evolution. Therma's 9 years represents solid commercial mechanical experience with proven custom fabrication capabilities. The more relevant question is which company's specialty matches your actual project needs.
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 11, 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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