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Earth Electric vs Supreme Air Systems
Santa Clara Solar Contractors Comparison · Updated March 2026
These contractors serve completely different needs: Earth Electric specializes in solar and EV charging systems, while Supreme Air Systems handles heating and cooling equipment.
| Earth Electric | Supreme Air Systems | |
|---|---|---|
| Rating | ★ 4.9 | ★ 4.9 |
| Years Licensed | 11 years | 28 years |
| License # | 1003783 | 740667 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Campbell, CA | Campbell, CA |
| Website | www.earth-electric.com | www.supremeair.net |
Key Differences
What Customers Say
Earth Electric
Earth Electric customers consistently praise thorough technical education about solar equipment, responsive project communication, and expertise handling complex installations including permitting and utility coordination.
Supreme Air Systems
Supreme Air Systems customers emphasize long-term maintenance relationships spanning decades, with technicians praised for punctuality, thorough inspections, clean work practices, and patient explanations during routine service visits.
Key Takeaway: Earth Electric's feedback centers on one-time complex installations requiring technical education and permitting expertise, while Supreme Air Systems' reviews highlight ongoing maintenance relationships with the same customers returning for seasonal service over many years.
Customer Reviews
Earth Electric
New Update: Earth Electric did an outstanding job 10 years ago to install my solar panels. I picked them after evaluating a large number of other national and local vendors. I just had Earth Electric ...
Earth Electric was fantastic to work with for our Tesla Powerwall installation! They weren’t the cheapest option (or the most expensive), but their service was absolutely incredible and worth every ...
We had Earth Electric install solar panels, batteries, and an electric car charger at our home, and are very pleased with the results! They did an excellent job with the installation and completely ha...
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 Earth Electric if...
- ✓ You're planning to install solar panels, battery storage like Tesla Powerwall, or electric vehicle charging equipment at your home
- ✓ Your electrical panel needs upgrading to accommodate new high-power systems or renewable energy equipment
- ✓ You need a contractor familiar with utility interconnection requirements, net metering applications, and solar-specific permitting in Santa Clara County
- ✓ You want detailed education about equipment options and system design tailored to your energy usage patterns
Consider Supreme Air Systems if...
- ✓ You need furnace repair, air conditioner maintenance, heat pump service, or complete HVAC system replacement
- ✓ You're looking for a maintenance relationship with scheduled semi-annual tune-ups for heating and cooling equipment
- ✓ You value long contractor tenure and want a company with nearly three decades of consistent operation in the South Bay
- ✓ You need tankless water heater service, dryer vent cleaning, or other mechanical system maintenance alongside HVAC work
Questions to Ask Before Hiring
- → If you're considering both solar and HVAC upgrades, ask each company for recommendations about coordination timing, especially if roof work is involved
- → Ask Earth Electric about electrical panel capacity assessment before solar installation and what upgrades might be required
- → Ask Supreme Air Systems about their experience servicing homes with solar panels and battery backup systems, as these may affect HVAC system operation during outages
- → Confirm which company handles local permit applications and utility coordination for their respective installations
The Bottom Line
This comparison only makes sense if you're planning simultaneous home upgrades requiring both solar installation and HVAC work. Earth Electric is your contractor for solar panels, battery storage, and EV chargers, with proven expertise in renewable energy systems and complex electrical upgrades. Supreme Air Systems is your contractor for furnace, air conditioner, and heat pump service, with nearly three decades of maintenance relationships. Both companies are properly licensed and insured with equivalent bond protection. Choose Earth Electric for energy system projects and Supreme Air Systems for heating and cooling needs. If you're upgrading both, hire both contractors and coordinate installation timing to avoid conflicts.
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Frequently Asked Questions
No, these are separate licensed trades requiring different expertise. Earth Electric handles solar and electrical work but not HVAC systems. Supreme Air Systems installs heating and cooling equipment but not solar panels. If you're planning both upgrades, you'll need to hire both contractors and coordinate timing between them.
The experience gap is less relevant than specialty match. Supreme Air Systems' 28 years provides deep HVAC knowledge and long-term customer relationships for ongoing maintenance. Earth Electric's 11 years is substantial for solar technology, which has evolved significantly in the past decade. Choose based on which system you need installed or serviced, not on years alone.
Solar panels themselves don't directly affect HVAC operation, but battery backup systems can power your heating and cooling during outages. If you're planning both upgrades, discuss your solar plans with Supreme Air Systems to ensure HVAC equipment is compatible with backup power capacity. Earth Electric can assess your total electrical load including HVAC when designing your solar system.
Start with Earth Electric if solar installation involves roof work, as HVAC equipment placement may need coordination. Otherwise, the order doesn't matter since they work on completely separate systems. Both companies appear capable of working professionally around other contractors' installations based on their project complexity experience.
Looking for the Best?
See our ranked list of top solar 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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