Compare Local Pros
Green Air Heating And Air Conditioning vs CEZ Electric And Maintenance
Contra Costa Electrical Contractors Comparison · Updated March 2026
Green Air brings 18 years of multi-system HVAC and solar experience, while CEZ offers specialized electrical expertise with only 2 years licensed.
| Green Air Heating And Air Conditioning | CEZ Electric And Maintenance | |
|---|---|---|
| Rating | ★ 4.6 | ★ 5.0 |
| Years Licensed | 18 years | 2 years |
| License # | 916517 | 1108289 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Antioch, CA |
| Website | www.gogreenair.net | www.cezelectric.com |
Key Differences
What Customers Say
Green Air Heating And Air Conditioning
Customers emphasize Green Air's ability to handle complex multi-system installations with detailed explanations of energy efficiency concepts and system integration.
CEZ Electric And Maintenance
Customers consistently highlight CEZ's rapid response times, emergency availability, and transparent communication throughout electrical projects.
Key Takeaway: Green Air receives feedback focused on managing comprehensive installations across multiple technologies, while CEZ stands out for speed and accessibility on focused electrical work.
Customer Reviews
Green Air Heating And Air Conditioning
11 out of 10 stars! Green Air delivered on every level—comfort, sustainability, and pure happiness. We were struggling with a broken Dyvak system that left our home feeling stale, unevenly heated, ...
This review related to solar panels, battery storage, HVAC, and roof replacement (yes, crazily did all four). We decided last year to get a solar and battery backup due to frequent brownouts and blac...
I was at Lowe’s in Concord buying lumber and needed help in lowering the plywood from a high rack Mark of Green Air was also there to purchase the same plywood. We partnered up and managed to get th...
CEZ Electric And Maintenance
I highly recommend this company for your electrical fixture needs. I truly appreciate the help I received from the company with replacing my electrical panel due to an insurance requirement. I worked ...
Half the power was out in my house and CEZ Electric was able to arrive within 30 minutes two days before Christmas and fix the problem.
Cesar and team of CEZ electric provided quick reliable and a solid service. I highly recommend them if you're looking for quality work and professionalism.
Consider Green Air Heating And Air Conditioning if...
- ✓ You need comprehensive HVAC work integrated with solar or battery systems, where one contractor coordinates heating, cooling, ductwork, and energy storage rather than managing multiple trades yourself
- ✓ Your project involves an older home where 18 years of experience diagnosing hidden duct damage, outdated HVAC configurations, or structural complications provides meaningful protection
- ✓ You're planning a major energy system overhaul combining multiple technologies and want a contractor with a long track record managing permitting and inspections for complex installations
- ✓ You need furnace repair, heat pump installation, or ductwork replacement alongside any electrical components
Consider CEZ Electric And Maintenance if...
- ✓ Your project is purely electrical—panel upgrades, circuit work, EV charger installation, or Tesla Powerwall electrical connections—without HVAC components
- ✓ You need rapid response for electrical emergencies, with a contractor available evenings and weekends for urgent troubleshooting
- ✓ You value direct access to the owner for transparent pricing discussions and real-time project communication throughout the installation
- ✓ Your electrical work is straightforward and doesn't require diagnosing decades-old wiring issues where extensive troubleshooting experience becomes critical
Questions to Ask Before Hiring
- → Ask CEZ for references from projects completed in the first year of licensing versus more recent work to understand how their capabilities have developed
- → If your project involves both HVAC and electrical work, ask Green Air how they coordinate with electrical subcontractors versus what they handle in-house with their own licensing
- → Ask both contractors about their experience with your specific home age and construction type, particularly if you have an older home where hidden issues are more likely
- → For Tesla Powerwall projects, ask each contractor how many installations they've completed and whether they've handled troubleshooting after initial installation
The Bottom Line
Choose Green Air if your project involves HVAC work, requires integrating multiple systems like solar with heating and cooling, or if you're working with an older home where 18 years of experience diagnosing complications provides meaningful protection. Choose CEZ if you need purely electrical work, value rapid emergency response, or have a straightforward electrical project where specialized focus and direct owner communication matter more than lengthy track record. For complex multi-system energy projects, Green Air's veteran status and comprehensive scope make them the stronger choice. For electrical-only work requiring quick turnaround, CEZ's specialization serves you well despite their newer status.
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Frequently Asked Questions
CEZ can handle the electrical components of Tesla Powerwall and solar installations, including panel upgrades and wiring connections. However, Green Air handles complete integrated systems including HVAC coordination, ductwork, and heating/cooling equipment that must work with your energy storage. If your project requires only electrical work, CEZ specializes in that. If you need HVAC integration, Green Air manages the full scope.
Not necessarily. For straightforward electrical work like breaker replacements, EV charger installations, or panel upgrades without HVAC involvement, CEZ's electrical specialization and faster response times may serve you better. Green Air's experience advantage matters most for complex multi-system projects, older homes with potential hidden issues, or when HVAC and electrical work must be coordinated.
CEZ maintains proper licensing, workers comp, and bonding, meeting legal safety requirements. The concern is experience depth for diagnosing unexpected complications, not basic competency. For routine electrical projects in newer homes, 2 years may be sufficient. For older homes or complex troubleshooting where decades of pattern recognition helps identify hidden problems, Green Air's 18 years provides substantially more protection.
Customer feedback indicates CEZ offers rapid response including same-day service and evening/weekend availability for electrical emergencies. Green Air receives positive feedback for service responsiveness, but CEZ's reviews specifically emphasize speed and emergency availability as distinguishing characteristics. If immediate response for electrical issues is your priority, CEZ demonstrates a clear pattern of availability.
Looking for the Best?
See our ranked list of top electrical contractors in Contra Costa.
Other Contra Costa Electrical Contractors Comparisons
Green Air Heating And Air Conditioning
★ 4.6
Hassler Heating And Air Conditioning
★ 4.9
Diablo Solar Services
★ 4.2
Green Air Heating And Air Conditioning
★ 4.6
Got Watts?
★ 4.9
Green Air Heating And Air Conditioning
★ 4.6
Green Air Heating And Air Conditioning
★ 4.6
West Coast Solar
★ 4.3
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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