Compare Local Pros
Elco Electric vs Therma
Santa Clara General Contractors Comparison · Updated March 2026
You're comparing an electrical contractor to a commercial mechanical contractor—these companies serve fundamentally different trades and project types.
| Elco Electric | Therma | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.6 |
| Years Licensed | 22 years | 9 years |
| License # | 826975 | 1027316 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Jose, CA | San Jose, CA |
| Website | www.elco-electric.com | www.therma.com |
Key Differences
What Customers Say
Therma
Customers consistently praise Therma's high-quality manufacturing capabilities, professional service, and precision in custom metal fabrication for commercial and industrial mechanical systems.
Key Takeaway: Therma has documented customer feedback emphasizing technical quality and commercial manufacturing expertise, while Elco Electric's limited review history provides no clear pattern of recent customer experiences.
Customer Reviews
Elco Electric
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 Elco Electric if...
- ✓ You need electrical work performed—panel upgrades, wiring, lighting installation, or electrical repairs that require a licensed electrician
- ✓ You value a contractor with 22 years of continuous licensing, indicating deep experience with code changes and complex electrical troubleshooting
- ✓ You're undertaking a residential electrical project where Elco Electric's service area and expertise align with typical homeowner needs
- ✓ You're willing to ask for recent references given the limited online review history
Consider Therma if...
- ✓ You need commercial mechanical systems, HVAC duct manufacturing, or custom metal fabrication rather than electrical work
- ✓ Your project involves industrial-scale fabrication, medical gas systems, or specialty ducting components that require precision manufacturing
- ✓ You're a commercial or industrial client rather than a residential homeowner, as Therma's experience clearly centers on commercial facilities
- ✓ You want documented customer feedback praising technical quality and manufacturing capabilities
Questions to Ask Before Hiring
- → For Elco Electric: Ask for references from residential electrical projects completed in the past year to supplement the limited review history
- → For Elco Electric: Confirm their typical project types align with your electrical needs and that they regularly serve residential clients
- → For Therma: Clarify whether they take on residential projects, as their documented experience focuses heavily on commercial and industrial mechanical work
- → For Therma: If considering them for a home HVAC project, ask about their residential service capabilities versus their primary commercial manufacturing focus
The Bottom Line
You're comparing companies in fundamentally different trades. If you need electrical work, Elco Electric is your only option here—their 22 years of licensing provides substantial electrical expertise, though you should request recent references given the limited review history. If you need commercial mechanical systems or industrial metal fabrication, Therma has documented capabilities and customer praise for that specialized work. For typical residential projects, Elco Electric handles electrical needs, but verify any mechanical contractor's residential service experience before hiring. Choose based on what trade your project actually requires, not on comparing across different specializations.
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Frequently Asked Questions
No, only Elco Electric is licensed for electrical work. Therma is a mechanical contractor specializing in HVAC and fabrication, not electrical installations. You need a licensed electrician like Elco Electric for any electrical project.
They're in different trades, so direct comparison isn't meaningful. Elco Electric's 22 years in electrical work means substantially more experience with electrical code evolution and complex electrical troubleshooting. Therma's 9 years in mechanical contracting is solid for their trade, but their documented strength is commercial manufacturing, not residential service.
Elco Electric serves residential and commercial electrical clients, making them appropriate for home electrical projects. Therma's documented experience centers on commercial mechanical systems and industrial fabrication—their customer feedback discusses manufacturing capabilities and Silicon Valley facilities, not home HVAC service. If you need residential HVAC work, verify Therma handles such projects before proceeding.
Some established contractors haven't prioritized online review platforms, especially if they rely on referral networks or commercial clients. The limited review history is a practical concern for homeowners trying to assess recent performance, which is why asking for current references becomes particularly important when evaluating Elco Electric.
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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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