Compare Local Pros
Clean Air HVAC vs Extensive Air Conditioning
Contra Costa HVAC Contractors Comparison · Updated March 2026
Clean Air HVAC brings three times the experience and a substantial customer track record, while Extensive Air Conditioning lacks verifiable feedback.
| Clean Air HVAC | Extensive Air Conditioning | |
|---|---|---|
| Rating | ★ 4.8 | ★ 5.0 |
| Years Licensed | 22 years | 7 years |
| License # | 829011 | 1046825 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Brentwood, CA |
| Website | www.cahvac.com | www.extensiveairconditioning.com |
Key Differences
What Customers Say
Clean Air HVAC
Customers consistently highlight same-day emergency responsiveness, detailed system explanations, and honest recommendations without pressure, with many maintaining service relationships spanning 10 to 20 years.
Key Takeaway: Clean Air HVAC has extensive verifiable feedback documenting service patterns and long-term customer retention, while Extensive Air Conditioning has no available reviews to assess actual performance despite seven years in business.
Customer Reviews
Clean Air HVAC
On time, very professional service representative resolved problem. Made sure everything was as it should be before ending the appointment. Would use Clean Air again.
I called CleanAir they were ableto get in really fast to check out my air conditioner. It was making a clunking sound on startup and shutdown. There Tech called that he was on his way and showed up on...
I was going to replace my water heater, but an HVAC line that has been installed 11 years earlier was in the way. So I called CleanAir HVAC and Roy Branda stopped by, gave me a brief tutorial on when ...
Extensive Air Conditioning
Ive been contracting with Extensive Air for over a year now. They are reliable and trustworthy
Consider Clean Air HVAC if...
- ✓ Your HVAC system is older or you're experiencing unusual symptoms that require diagnostic expertise beyond straightforward repairs, where Clean Air's 22 years of troubleshooting experience becomes valuable
- ✓ You need emergency service and value documented responsiveness, as multiple customers report same-day and next-day appointments for urgent situations
- ✓ You want to understand your options before committing, as reviews consistently mention detailed explanations and honest assessments rather than pressure toward expensive replacements
- ✓ You're seeking a maintenance relationship beyond a single repair, with customers reporting biannual service contracts maintained over many years
Consider Extensive Air Conditioning if...
- ✓ You're located in Brentwood and want a contractor based in your immediate community rather than traveling from Concord
- ✓ You're comfortable hiring based on licensing credentials alone and willing to be an early reviewer for a company without established feedback
- ✓ Price quotes significantly favor Extensive Air Conditioning after you've verified their crew's experience and obtained detailed references from recent projects similar to yours
Questions to Ask Before Hiring
- → Ask Extensive Air Conditioning for at least three recent references from projects similar to yours, and actually call them to ask about communication, timeliness, and how any unexpected issues were handled
- → Ask Extensive Air Conditioning how long their current technicians have been with the company and what their individual experience levels are in HVAC work
- → Ask both companies for detailed written quotes that break down equipment specifications, labor, warranty terms, and timeline so you can compare precisely what you're getting
The Bottom Line
Clean Air HVAC is the clearer choice for most homeowners unless you're specifically located in Brentwood and Extensive Air Conditioning offers a substantially better price. The 22-year track record combined with consistent customer feedback about responsiveness, honest assessments, and long-term relationships gives you reasonable confidence about what to expect. Extensive Air Conditioning may be perfectly competent, but without verifiable reviews, you're essentially volunteering to be their test case. If you're considering Extensive Air Conditioning based on location or price, invest the time to thoroughly check references and verify the experience level of the actual technicians who will work on your system.
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Frequently Asked Questions
Yes, particularly if your home is older or you have existing ductwork. A 22-year veteran has diagnosed thousands of installations and knows how to identify underlying issues like inadequate duct sizing, ventilation problems, or electrical concerns that a newer contractor might miss until mid-project. For a truly straightforward swap in a newer home, the gap matters less, but most HVAC projects reveal at least one complication.
This could mean they haven't actively collected reviews, they primarily work through commercial or property management contracts that don't generate public feedback, or they're a smaller operation with limited residential projects. Before hiring, ask them directly for references and verify those references actually reflect recent work. Seven years is long enough that verifiable customer feedback should exist somewhere.
The customer feedback suggests genuine value, with multiple people reporting 10 to 20 year relationships and biannual service visits. Preventive maintenance extends equipment life and catches small problems before they become expensive failures. The positive pattern is that reviews mention honest assessments rather than unnecessary upselling, which indicates maintenance visits aren't being used primarily as sales opportunities.
The $25,000 bond is the standard minimum and provides identical baseline protection if either contractor fails to complete your project as agreed. However, a company's track record matters more than the bond for predicting whether you'll actually need that protection. Clean Air's documented history of completing projects and maintaining long-term customer relationships suggests you're far less likely to face a situation where you'd need to make a bond claim.
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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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