Eco Performance Builders vs Hassler Heating And Air Conditioning
Contra Costa HVAC Contractors Comparison · Updated March 2026
Hassler brings 10 additional years of licensed experience while Eco Performance specializes in comprehensive energy efficiency retrofits beyond standard HVAC work.
| Eco Performance Builders | Hassler Heating And Air Conditioning | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.9 |
| Years Licensed | 16 years | 26 years |
| License # | 944856 | 770180 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Walnut Creek, CA | El Cerrito, CA |
| Website | ecoperformancebuilders.com | www.hasslerheating.com |
Key Differences
What Customers Say
Eco Performance Builders
Customers consistently praise comprehensive energy assessments that identify multiple improvement opportunities and technical guidance through complex upgrade decisions involving building systems beyond equipment.
Hassler Heating And Air Conditioning
Customers highlight thorough diagnostics with photo documentation, systematic inspection processes, and responsive service across the full range from emergency repairs to planned installations.
Key Takeaway: Eco Performance feedback emphasizes systems-based thinking and multi-component projects, while Hassler feedback focuses on traditional HVAC service excellence and diagnostic thoroughness for equipment-centered work.
Customer Reviews
Eco Performance Builders
We needed a new heater and went for a heat pump. Their approach is top shelf: our uninsulated house was insulated, new ductwork installed, recommended window replacement to allow for smaller system. ...
I had Eco Performance Builders install two heat pump HVAC systems with new ducts, new attic insulation, and an ERV system for my house. From start to finish, they were very prompt, knowledgeable and ...
Great service from project planning, design,. permitting and delivery. Highly detail oriented crew that gets the job done well and on time.
Hassler Heating And Air Conditioning
We had Hassler Heating & Air replace the ductwork under our house, and the experience was excellent from start to finish. The team was professional, punctual, and clearly knew what they were doing. Th...
Friendly, intelligent service. Thoroughly checked my heating system and showed in great detail what the problems are. The technician provided detailed inspection and we both agreed that it will be nec...
The crew was professional and courteous while being in my home which was very appreciated. Larry in particular was kind enough to answer my many questions to ensure I understood my new system so that ...
Consider Eco Performance Builders if...
- ✓ You want a comprehensive energy assessment identifying insulation gaps, air leakage, and ductwork problems as part of your HVAC replacement rather than equipment-only quotes
- ✓ Your project involves multiple components like adding attic insulation, sealing crawlspaces, or installing ERV systems alongside heat pump equipment
- ✓ You're pursuing substantial energy bill reductions and home comfort improvements beyond what new equipment alone provides
- ✓ You value a systems-based approach that addresses root causes of heating and cooling issues rather than simply replacing failed equipment
Consider Hassler Heating And Air Conditioning if...
- ✓ You need a traditional HVAC contractor who handles everything from emergency repairs to planned replacements with 26 years of problem-solving experience
- ✓ Your project is primarily equipment replacement without extensive building envelope work or energy retrofits
- ✓ You want photo documentation and detailed diagnostics of your existing system's condition
- ✓ You value working with a company that has navigated a decade more of permitting changes, code updates, and installation challenges across diverse East Bay housing stock
Questions to Ask Before Hiring
- → Ask Eco Performance what percentage of their projects include building envelope work versus HVAC-only installations to understand if your equipment-focused project fits their typical workflow
- → Ask Hassler if they conduct whole-home energy assessments or partner with energy auditors if you're considering insulation and air sealing alongside equipment replacement
- → Ask both companies for references from projects matching your specific scope, whether that's a comprehensive energy retrofit or focused HVAC replacement
- → Ask about their familiarity with local rebate programs for heat pumps and insulation work, as incentive navigation can significantly affect project costs
The Bottom Line
Choose Eco Performance Builders if your project involves comprehensive energy efficiency improvements beyond equipment replacement, such as adding insulation, air sealing, or addressing ductwork deficiencies as part of heat pump installation. Their systems-based approach and thorough assessments suit homeowners pursuing substantial comfort and efficiency gains through multi-component retrofits. Choose Hassler Heating And Air Conditioning if you need focused HVAC equipment work, value 26 years of problem-solving experience across diverse installation challenges, or want a traditional full-service contractor handling everything from emergency repairs to planned replacements without necessarily bundling building envelope improvements. Both are qualified veteran contractors with proper protections; the deciding factor is whether your project scope matches energy retrofitting or traditional HVAC service.
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Frequently Asked Questions
For straightforward equipment replacement with adequate existing ductwork, both companies demonstrate competence in heat pump installations based on customer feedback. Hassler's additional decade becomes more valuable when dealing with older homes requiring creative solutions for hidden structural issues, undersized electrical panels, or navigating complex permitting situations that only experience teaches you to anticipate.
If your home has comfort issues beyond equipment failure, uneven temperatures between rooms, or high energy bills despite a functioning system, an assessment identifying insulation gaps and ductwork problems prevents installing properly-sized equipment that still underperforms due to building envelope issues. Eco Performance includes this analysis in their workflow, while with Hassler you'd need to explicitly request assessment or arrange it separately before equipment sizing.
Both install heat pumps competently, but Eco Performance typically approaches it as part of a larger energy efficiency project addressing insulation and air sealing, while Hassler handles it as HVAC equipment replacement. If you only want equipment installed without additional building envelope work, Hassler's traditional HVAC focus may provide a more streamlined process and potentially lower cost for the equipment-only scope.
Eco Performance's business model directly addresses comprehensive electrification with heat pump HVAC, heat pump water heaters, and envelope improvements as integrated projects. Hassler handles heat pump and water heater installations but customer feedback emphasizes equipment service rather than whole-home energy transitions. For electrification involving multiple systems and building improvements, Eco Performance's specialized focus aligns better with that project type.
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See our ranked list of top hvac contractors in Contra Costa.
Other Contra Costa HVAC Contractors Comparisons
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High Performance Heating & Air
★ 5.0
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Elite Comfort Systems
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Hassler Heating And Air Conditioning
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California Heating And Cooling
★ 4.7
Hassler Heating And Air Conditioning
★ 4.9
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 13, 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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