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Eco Energy Bay Area vs Mihas HVAC
Alameda HVAC Contractors Comparison · Updated March 2026
Eco Energy Bay Area brings nine years of licensing experience to complex attic and insulation projects, while Mihas HVAC is a newer contractor specializing in HVAC systems with strong diagnostic skills.
| Eco Energy Bay Area | Mihas HVAC | |
|---|---|---|
| Rating | ★ 4.6 | ★ 5.0 |
| Years Licensed | 9 years | 0 years |
| License # | 1025592 | 1149214 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Oakland, CA | Oakland, CA |
| Website | www.ecoenergybayarea.com | mihashvac.com |
Key Differences
What Customers Say
Eco Energy Bay Area
Customers highlight thorough attic insulation work with careful property protection, though one customer experienced unresolved concerns about rodent-proofing effectiveness and follow-up responsiveness.
Mihas HVAC
Customers consistently praise prompt response times, honest diagnostics that avoid unnecessary upselling, and neat workmanship on both routine and complex HVAC installations.
Key Takeaway: Eco Energy receives feedback on comprehensive project scope and property care, while Mihas HVAC stands out for diagnostic honesty and responsiveness, reflecting their different service specializations.
Customer Reviews
Eco Energy Bay Area
I had such a great experience with Eco energy ! I live in Oakland , CA, and my attic really needed some attention - there were signs of rodents and a lot of old insulation and debris. The team came ou...
I never do reviews but I'm more than happy to do it for Eco Energy, They are great! They insulated my non vented flat roof ceiling and I was very happy with the result. rami is really knowledgeable ...
Rami and his team did a great job at helping me remove old insulation and seal entry gaps in my attic prior to installing new insulation. They started by protecting my flooring and items. They finishe...
Mihas HVAC
I reached out to Michael as my home heating was not working during a very cold winter, and he was prompt with the initial diagnosis that I needed to replace my entire system (it was very old and poorl...
Big thanks to Michael for the fast and professional repair of our gas furnace. He arrived on time, quickly diagnosed the issue, and explained everything clearly. The work was done neatly, and he provi...
Michael did a great job on my HVAC as well as my heat pump system. Neat clean. My area looks like new. Highly recommend him.
Consider Eco Energy Bay Area if...
- ✓ Your project involves comprehensive attic work beyond just HVAC—insulation removal, rodent exclusion, air sealing, or addressing pest intrusion in older homes where these issues interconnect.
- ✓ You're dealing with a complex roof configuration like a non-vented flat roof ceiling where insulation installation requires specialized knowledge of building science and moisture management.
- ✓ You want a contractor with documented history handling the complications that emerge in aging Bay Area housing stock, such as discovering structural issues mid-project.
- ✓ Your project timeline allows for thorough work, and you're willing to clarify follow-up service expectations upfront given one customer's responsiveness concern.
Consider Mihas HVAC if...
- ✓ Your need is specifically HVAC-focused—furnace repair, system replacement, heat pump installation, or mini-split systems—without the broader attic remediation work.
- ✓ You value diagnostic honesty and want a technician who explains problems clearly without pushing unnecessary replacements on older equipment.
- ✓ You need responsive service for heating emergencies or straightforward system work where nine years of licensing history matters less than technical precision.
- ✓ You're comfortable verifying references and discussing warranty terms directly given the limited licensing history, and your project is relatively straightforward without anticipated complications.
Questions to Ask Before Hiring
- → For Mihas HVAC: Ask how long they've operated under their current license, request references from projects completed at least two years ago, and clarify what warranty support looks like if issues arise years from now.
- → For Eco Energy Bay Area: Ask specifically about their follow-up service protocol and response timeframe if rodent exclusion or insulation performance issues emerge after project completion.
- → For both: If your project involves both attic work and HVAC installation, ask each contractor how they coordinate between these systems and whether they handle the full scope or subcontract portions of the work.
The Bottom Line
If your project centers on comprehensive attic work—insulation, rodent exclusion, air sealing, or complex roof configurations—Eco Energy Bay Area's nine years of licensing and specialized focus provide clear advantages for handling complications in older Bay Area homes. Address the rodent-proofing follow-up concern directly during your consultation. If your need is specifically HVAC installation or repair without broader attic remediation, Mihas HVAC's strong diagnostic reputation and honest approach serve you well for straightforward system work, but verify their experience timeline and warranty support given limited licensing history. For projects combining both attic and HVAC work, Eco Energy's integrated service avoids coordination headaches, though complex HVAC installations may benefit from Mihas's specialized focus if you're willing to manage two contractors.
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Frequently Asked Questions
Eco Energy Bay Area handles both services in-house, which simplifies coordination and accountability for how insulation work affects HVAC performance. Mihas HVAC focuses specifically on HVAC systems without the attic remediation expertise. Using Eco Energy for comprehensive work avoids coordination issues between separate contractors, though you should verify their HVAC installation experience matches Mihas's specialized focus if system complexity is high.
It depends on project complexity. For straightforward HVAC replacement with no anticipated complications, Mihas HVAC's strong diagnostic skills may suffice. For attic projects where you might discover rodent damage, structural issues, or need guidance on building science questions about vapor barriers and ventilation, Eco Energy's nine years of encountering these problems provides meaningful advantage. Experience matters most when things don't go as planned.
One customer reported concerns about effectiveness and follow-up responsiveness that weren't resolved to their satisfaction. This suggests you should discuss their rodent exclusion warranty terms, inspection process, and guaranteed response timeframe for follow-up issues before signing. Ask for references specifically from rodent exclusion projects and how they handle callbacks if animals return.
Yes, ask directly how long the business has operated, whether the owner worked under a different license previously, and request references from projects completed over a year ago to verify long-term system performance. The strong customer feedback on diagnostics and installations is positive, but you need to confirm their track record extends beyond recent work.
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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 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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