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Simmitri vs Supreme Air Systems
Santa Clara Solar Contractors Comparison · Updated March 2026
These veteran contractors serve completely different needs—Simmitri handles roofing and solar while Supreme Air Systems specializes in HVAC systems.
| Simmitri | Supreme Air Systems | |
|---|---|---|
| Rating | ★ 4.8 | ★ 4.9 |
| Years Licensed | 27 years | 28 years |
| License # | 765156 | 740667 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Morgan Hill, CA | Campbell, CA |
| Website | www.simmitri.com | www.supremeair.net |
Key Differences
What Customers Say
Simmitri
Customers emphasize Simmitri's project management capabilities, particularly handling permitting and utility coordination for solar installations with professional crews completing work on schedule.
Supreme Air Systems
Customers highlight Supreme Air Systems' long-term maintenance relationships, with many reporting 10-20 year service history and consistent technician quality across scheduled tune-ups.
Key Takeaway: Simmitri receives feedback focused on one-time project execution and administrative coordination, while Supreme Air Systems feedback centers on ongoing service relationships and scheduled maintenance consistency.
Customer Reviews
Simmitri
Simmitri installed our Enphase solar panels and later our battery system. They did a terrific job. Our system runs well after three years. They were good to work with. Their office helped us with th...
After interviewing 3 solar companies I selected Simmiti for my dolar installation. The planning and submissions to PGE and SCCounty Building were done in a timely manner. The installation crew was sup...
We can say that installing and working with Simmitri was a seamless experience. They did exactly as they say they would. The staff is amazing to work with, especially the Project Manager Pamela Rodrig...
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 Simmitri if...
- ✓ You need roofing work, solar panel installation, or battery storage systems—Simmitri's core specialties
- ✓ You're planning coordinated roof replacement with solar installation and want one contractor managing both disciplines
- ✓ Your project requires navigating PG&E interconnection and local permitting processes, where Simmitri has demonstrated experience
- ✓ You prefer project-based contractors with high owner involvement for major capital improvements
Consider Supreme Air Systems if...
- ✓ You need HVAC system installation, repair, or maintenance—Supreme Air Systems' exclusive focus
- ✓ You want a maintenance relationship with semi-annual tune-ups rather than one-time project work
- ✓ You value long-term contractor relationships, as their customer base includes many 10-20 year clients
- ✓ Your home has heating, cooling, ventilation, or water heating systems requiring ongoing service
Questions to Ask Before Hiring
- → If planning whole-house upgrades: Ask each contractor whether coordination is needed between trades (for example, HVAC load calculations may change after adding insulation during a roof project or when solar affects electrical panel capacity)
- → If considering maintenance contracts: Ask Supreme Air Systems what their semi-annual service includes and whether scheduling is automatic
- → If planning solar installation: Ask Simmitri about their timeline for PG&E interconnection in your specific utility territory
- → Ask both contractors whether they subcontract any portion of their specialty work or handle everything with their own crews
The Bottom Line
This isn't a competitive comparison—you need to select based on your actual project requirements. If you're replacing your roof, installing solar panels, or adding battery storage, Simmitri is the appropriate choice with relevant specialization. If you need HVAC installation, repair, or ongoing maintenance for heating and cooling systems, Supreme Air Systems is the specialist. Both companies demonstrate veteran-level experience with proper licensing and insurance in their respective trades. The only scenario where you'd genuinely compare these contractors is if you're hiring multiple specialists for a comprehensive home upgrade, in which case you'd likely engage both for their separate expertise.
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Frequently Asked Questions
No, these contractors specialize in different trades requiring separate licenses. Simmitri holds roofing and solar credentials, while Supreme Air Systems specializes in HVAC systems. For comprehensive home upgrades involving both exterior and climate control work, you'll need to hire separate contractors for each specialty.
This depends on your project type. Supreme Air Systems builds ongoing relationships through scheduled maintenance programs, making them suitable for HVAC systems requiring regular tune-ups. Simmitri provides project-based service for roofing and solar installations, with customers noting responsiveness for warranty issues but not ongoing maintenance schedules.
Their equivalent experience levels indicate both are veteran contractors, but in completely different fields. 27-28 years of roofing and solar experience doesn't translate to HVAC expertise and vice versa. Choose based on which trade specialty matches your actual project needs, not on the similar tenure.
Generally, roofing and structural work happens before HVAC installations, as roof modifications can affect ductwork routing and equipment placement. If installing solar, coordinate with your HVAC contractor on electrical panel capacity since both systems draw from the same service. Ask both contractors about the typical sequencing for your specific project scope.
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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 10, 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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