Compare Local Pros
Dollens Electric vs Supreme Air Systems
Santa Clara Solar Contractors Comparison · Updated March 2026
You're comparing an electrical contractor with an HVAC company—these businesses serve completely different needs, so your choice depends on which trade you need.
| Dollens Electric | Supreme Air Systems | |
|---|---|---|
| Rating | ★ 4.9 | ★ 4.9 |
| Years Licensed | 20 years | 28 years |
| License # | 867376 | 740667 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Jose, CA | Campbell, CA |
| Website | dollenselectric.com | www.supremeair.net |
Key Differences
What Customers Say
Dollens Electric
Customers emphasize Dollens Electric's quick response times and responsive communication, with technicians providing detailed technical explanations and options without pressure.
Supreme Air Systems
Supreme Air Systems customers highlight long-term relationships spanning decades, with consistent praise for scheduled maintenance programs and thorough system inspections.
Key Takeaway: Dollens Electric excels at rapid response for new customers and project initiation, while Supreme Air Systems builds enduring maintenance relationships with customers using them for 10-20 years.
Customer Reviews
Dollens Electric
Great Company, very happy every time they do work for us.
I needed to upgrade my electrical panel. Dollens Electric did a load calculation and recommended a new panel that would accommodate the electrification of my furnace and water heater down the road. Th...
Fixed my problem and replaced my electronic door lock promptly.
Supreme Air Systems
I have been dealing with Supreme Air Systems for several years. As a follow-up to my last review, Raul did a thorough cleaning and servicing out HVAC system. He was polite, efficient and did an amaz...
Supreme Air installed a new HVAC system at my condo. Alan was responsive and made sure everything was done right, and everyone was friendly and easy to work with, from the administrative team to Humbe...
Excellent service. Technician came at the time requested, changed the filter, replaced the batteries in the thermostat and cleaned up after himself. Bravo Supreme! MEWIST owner Skin Deep Beauty & Beyo...
Consider Dollens Electric if...
- ✓ You need electrical work including panel upgrades, circuit additions, lighting installations, EV charger setup, generator installation, or solar electrical integration
- ✓ You value quick response times and fast estimate turnaround, with customers reporting site visits often within a day of contact
- ✓ Your project requires detailed technical explanations about electrical options, code requirements, or system capacity
- ✓ You have an electrical emergency requiring troubleshooting expertise from an experienced licensed electrician
Consider Supreme Air Systems if...
- ✓ You need heating, cooling, or ventilation work including furnace service, air conditioner maintenance, heat pump repair, or HVAC system replacement
- ✓ You're interested in a long-term maintenance relationship with semi-annual service visits to extend equipment life and prevent breakdowns
- ✓ You value consistency and reliability over many years, as evidenced by their exceptional customer retention spanning decades
- ✓ You want thorough system inspections with patient explanations from technicians who maintain clean work areas and respect your home
Questions to Ask Before Hiring
- → Ask yourself: Is my project electrical (wiring, panels, outlets, lighting, generators) or HVAC (heating, cooling, ventilation, air quality)?
- → If you're unsure which trade you need, describe your specific symptoms or goals to each company and ask whether your project falls within their scope
- → If you need both electrical and HVAC work, ask each company whether they can coordinate with the other trade or if they recommend a specific sequencing of work
The Bottom Line
This isn't a matter of choosing the better contractor—it's about matching your project to the correct trade. If you need electrical work of any kind, choose Dollens Electric, a responsive 20-year veteran with strong technical expertise. If you need heating or cooling work, choose Supreme Air Systems, a 28-year veteran with exceptional long-term customer relationships and maintenance programs. If you're comparing these companies because you're uncertain which trade you need, that's your real question to answer first. Describe your specific problem or goal to both companies and ask directly whether it falls within their scope. Many home improvement projects clearly require one trade or the other, but some situations involve both, requiring coordination between separate contractors.
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Frequently Asked Questions
This comparison typically happens when a homeowner is unclear about which trade their project requires. Some projects involve both trades—like installing a heat pump that needs both HVAC expertise and electrical panel upgrades, or replacing a furnace that requires both gas line work and electrical connections. If you're genuinely uncertain, describe your specific need to both companies to determine which trade should handle your project.
No, these are distinct licensed trades in California. Dollens Electric holds an electrical contractor license and cannot legally perform HVAC work. Supreme Air Systems specializes in HVAC and would need to subcontract any electrical work. If your project requires both trades, you'll likely need to hire separate contractors or find one company that subcontracts the secondary trade.
Both companies have excellent credentials with proper licensing, workers compensation insurance, and $25,000 bonds. Supreme Air Systems has 8 more years of licensed experience (28 versus 20 years), but both qualify as veteran contractors. The more relevant difference is that Supreme shows exceptional customer retention with relationships spanning 10-20 years, while Dollens demonstrates stronger responsiveness for new customer contact and project initiation.
Call Supreme Air Systems for the heat pump itself, as this is HVAC equipment. However, heat pump installations often require electrical panel upgrades to handle the additional load, which would require Dollens Electric or another licensed electrician. Ask Supreme Air Systems during your consultation whether your electrical panel has adequate capacity, and if not, coordinate the electrical upgrade before or during the heat pump installation.
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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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