Compare Local Pros
Excellence Heating And Air vs Zero Energy Associates
Sonoma HVAC Contractors Comparison · Updated March 2026
Zero Energy Associates brings 6 additional years of licensing experience and specializes in energy-efficient solutions including solar, while Excellence Heating And Air focuses exclusively on traditional HVAC systems.
| Excellence Heating And Air | Zero Energy Associates | |
|---|---|---|
| Rating | ★ 5.0 | ★ 5.0 |
| Years Licensed | 17 years | 23 years |
| License # | 931055 | 820063 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Santa Rosa, CA | Sebastopol, CA |
| Website | excellenceheating.com | zeroea.com |
Key Differences
What Customers Say
Excellence Heating And Air
Excellence Heating And Air customers consistently emphasize the detailed explanations and careful installation work, with particular recognition for handling complex ductwork and equipment relocation projects efficiently.
Zero Energy Associates
Zero Energy Associates customers highlight the company's long-term relationships spanning 7-10 years, with systems performing well over extended periods and the company standing behind installations when issues arise.
Key Takeaway: While both receive praise for thorough communication, Zero Energy Associates shows a pattern of customers returning for multiple renewable energy projects over many years, whereas Excellence customers focus on single HVAC installation quality and permitting support.
Customer Reviews
Excellence Heating And Air
Great experience with E.H.A. No issues. Working with Anthony was easy. He talked me through the process step by step...
Excellent work done in a timely manor. Easy to schedule and they do all the permitting and followup. Would highly recommend Excellence Heating and Air!
I highly recommend Excellence! Dee, Anthony, and all of the staff were very responsive and patiently answered all questions regarding the equipment, installation, and permit/rebate processing. The hea...
Zero Energy Associates
Zero Energy was professional and did a great job installing my new heat pump heater. I strongly recommend them!
I've been using Zero Energy Associates for HVAC and solar on most of my construction projects for the last 7 years. Daniel Smith and his crew have always stood behind their work 100%. When asked, I al...
We had a wonderful experience with Zero Energy and based on this experience would choose to use them again There were a few glitches that were communicated clearly and then taken care of. The finished...
Consider Excellence Heating And Air if...
- ✓ Your project is a straightforward HVAC replacement or repair without any renewable energy components and you want a contractor focused exclusively on heating and cooling systems.
- ✓ You're in Santa Rosa or the central Sonoma County area and prefer working with a local contractor based in your immediate region.
- ✓ Your home has complex ductwork needs, equipment relocation requirements, or challenging installation conditions where Excellence's track record for careful, detailed installation work is particularly relevant.
- ✓ You value a contractor who handles all permitting directly and you're not planning any solar, battery, or gas-to-electric conversion work.
Consider Zero Energy Associates if...
- ✓ You're considering solar panels, battery storage, or converting from gas to electric systems now or within the next few years and want a contractor who can handle both HVAC and renewable energy as an integrated project.
- ✓ You're pursuing energy efficiency rebates or need HERS rating compliance for your installation, which requires specialized knowledge Zero Energy Associates has demonstrated.
- ✓ You're in Sebastopol or western Sonoma County and value the 23 years of licensing experience for diagnosing complex system integration issues.
- ✓ You want a contractor with documented long-term customer relationships spanning 7-10 years and a track record of standing behind installations that perform well over extended periods.
Questions to Ask Before Hiring
- → If considering Zero Energy Associates for HVAC-only work, ask what percentage of their current projects are traditional HVAC versus renewable energy to ensure they remain actively engaged in conventional heating and cooling.
- → Ask both contractors for references from projects completed in homes similar to yours in age and system complexity.
- → If you have any interest in future solar or electrification, ask Excellence Heating And Air how their HVAC installations coordinate with potential solar work by other contractors.
The Bottom Line
If your project is exclusively HVAC-focused with no solar or electrification plans, both contractors are veteran-level qualified, and your choice comes down to location preference and scheduling availability. Excellence Heating And Air's 17 years and HVAC specialization is entirely sufficient for traditional heating and cooling work. However, if you're considering solar panels, battery storage, or gas-to-electric conversion now or within the next 3-5 years, Zero Energy Associates' 23 years of experience and proven expertise in integrated renewable energy systems makes them the more strategic choice. Their ability to design HVAC and solar as coordinated systems from the outset can save you money and complexity compared to managing separate contractors later.
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Frequently Asked Questions
Customer feedback indicates Zero Energy Associates maintains strong performance on conventional HVAC installations including heat pumps and furnaces, with people specifically mentioning long-term system performance and standing behind work. However, if you're certain you'll never pursue solar or electrification, Excellence's exclusive HVAC focus may align better with your needs. Ask Zero Energy Associates about their current project mix to understand their workload balance.
For straightforward replacements in newer homes, both contractors' veteran status provides adequate experience. The gap becomes more relevant if your home has older ductwork, unusual system configurations, or you're considering equipment that integrates with other home systems. Zero Energy Associates' additional years matter most if you're planning renewable energy additions where system integration experience is critical.
Excellence can install heat pumps and HVAC systems that are technically compatible with future solar installations, but you'll need to coordinate with a separate solar contractor later. Zero Energy Associates can design and install your HVAC system with solar integration planned from the beginning, potentially saving on future modification costs and ensuring optimal system sizing from day one.
Both companies install heat pumps and receive positive customer feedback for this work. Excellence specializes in the HVAC aspects including ductwork modifications and equipment placement, while Zero Energy Associates brings additional expertise in electric conversions and energy efficiency optimization. If your heat pump is part of electrification plans or you need HERS compliance, Zero Energy Associates' specialization is advantageous. For heat pump installations focused on HVAC performance alone, both are well-qualified.
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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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