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Excellence Heating And Air vs Peterson Mechanical
Sonoma HVAC Contractors Comparison · Updated March 2026
Peterson Mechanical brings 68 years of institutional experience versus Excellence Heating's 17 years with high owner involvement.
| Excellence Heating And Air | Peterson Mechanical | |
|---|---|---|
| Rating | ★ 5.0 | ★ 5.0 |
| Years Licensed | 17 years | 68 years |
| License # | 931055 | 171486 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Santa Rosa, CA | Sonoma, CA |
| Website | excellenceheating.com | petersonmechanical.com |
Key Differences
What Customers Say
Excellence Heating And Air
Customers consistently highlight the owner's personal involvement, time spent explaining equipment options, and detailed communication throughout the decision-making and installation process.
Peterson Mechanical
Customers emphasize professional crew behavior, quiet efficient installations, competitive pricing, and technical competence without highlighting extended personal consultation.
Key Takeaway: Excellence Heating operates with high-touch owner engagement throughout projects while Peterson Mechanical delivers through professional crews focused on efficient, quiet execution with less emphasis on extended customer interaction.
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...
Peterson Mechanical
Fantastic service.
Trouble with Nest thermostat (PG&E supplied). Justin came out, on time, and diagnosed the problem which was a bit tricky and didn't leave until he was certain it was operating.
Super cool crew
Consider Excellence Heating And Air if...
- ✓ You want direct access to the owner throughout your project and value detailed explanations of equipment options before making decisions
- ✓ Your project involves equipment relocation or duct modifications where you'd benefit from someone taking extra time to walk you through the approach
- ✓ You prefer a contractor who will be personally invested in your specific project rather than assigning it to a crew
- ✓ You're located in Santa Rosa or the northern parts of Sonoma County where Excellence Heating is based
Consider Peterson Mechanical if...
- ✓ You're dealing with an older home or unusual system where 68 years of institutional experience diagnosing legacy equipment could matter
- ✓ Competitive pricing is a priority and you want multiple decades of operational efficiency working in your favor
- ✓ You prefer professional crews who work quietly and efficiently without requiring extensive interaction during installation
- ✓ Your project includes plumbing work in addition to HVAC, as Peterson Mechanical offers both services
Questions to Ask Before Hiring
- → Ask Excellence Heating who specifically will be on-site if the owner handles consultations but crews perform installation work
- → Ask Peterson Mechanical about their approach to customer communication during projects and who your point of contact will be
- → Ask both companies for references from projects similar to yours in age and complexity, particularly if you have an older heating system
The Bottom Line
Both companies are properly credentialed veteran contractors capable of handling residential HVAC projects professionally. Choose Excellence Heating And Air if you value high owner involvement, detailed consultation, and want someone personally invested in explaining your options throughout the project. Choose Peterson Mechanical if you're dealing with an older or unusual system where 68 years of institutional knowledge could identify problems a newer company might miss, or if you prefer competitive pricing and professional crews who execute efficiently without requiring extensive interaction. For standard installations in newer homes, your decision comes down to communication preference: extended owner consultation versus streamlined crew execution.
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Frequently Asked Questions
For straightforward equipment swaps in newer homes, the gap matters less. Where Peterson Mechanical's deeper experience becomes valuable is diagnosing problems in older systems, working with legacy ductwork, or handling unexpected complications like outdated electrical panels or unusual venting configurations that weren't common 20 years ago. Excellence Heating's 17 years is still substantial veteran-level experience for most residential projects.
The customer feedback patterns suggest different approaches. Excellence Heating customers specifically mention extended time with the owner discussing options and answering questions, while Peterson Mechanical customers focus on crew professionalism and technical competence without highlighting the same consultation depth. If detailed pre-project communication is important to you, ask Peterson Mechanical directly about their consultation process before booking.
The reviews don't provide specific price comparisons. Peterson Mechanical customers mention competitive pricing as a positive, but this could reflect value perception rather than necessarily being the lowest bid. Get quotes from both companies for your specific project to compare actual pricing, and evaluate what's included in those quotes beyond just the bottom line number.
Excellence Heating customers specifically mention the company handling permitting and follow-up inspections as convenient, suggesting they proactively manage this process. Peterson Mechanical's greater institutional longevity means they've worked with local building departments for decades, which typically streamlines permit processing. Both should handle this competently, but you could ask each company about their typical permit timeline for your specific project type.
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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 11, 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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