Compare Local Pros
Hassler Heating And Air Conditioning vs Martinez Sheet Metal
Contra Costa Plumbing Contractors Comparison · Updated March 2026
Hassler is an established HVAC specialist with strong customer feedback, while Martinez is a sheet metal fabricator with 62 years of licensure but almost no residential review history.
| Hassler Heating And Air Conditioning | Martinez Sheet Metal | |
|---|---|---|
| Rating | ★ 4.9 | ★ 5.0 |
| Years Licensed | 26 years | 62 years |
| License # | 770180 | 222277 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | El Cerrito, CA | Martinez, CA |
| Website | www.hasslerheating.com | www.martinezsheetmetal.com |
Key Differences
What Customers Say
Hassler Heating And Air Conditioning
Customers consistently highlight Hassler's thorough diagnostic approach, detailed explanations using photos and videos, and responsive scheduling across various HVAC projects.
Key Takeaway: Hassler has substantial customer feedback documenting residential HVAC expertise, while Martinez has minimal review history making it impossible to assess their service quality or residential focus.
Customer Reviews
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 ...
Martinez Sheet Metal
Great company good people. Custom cabinet an Moore.
Excellent company with skilled craftsmen!
Consider Hassler Heating And Air Conditioning if...
- ✓ You need comprehensive HVAC service including diagnostics, system replacement recommendations, or complex installations like heat pump conversions where Hassler's documented expertise is directly relevant
- ✓ You value detailed communication and documentation throughout the project, as customers consistently mention photo/video explanations and thorough diagnostic processes
- ✓ You want a contractor with verifiable recent experience on projects similar to yours, from routine maintenance to full system replacements and ductwork modifications
- ✓ You need responsive scheduling for heating or cooling emergencies, an area where Hassler has demonstrated quick turnaround according to customer feedback
Consider Martinez Sheet Metal if...
- ✓ Your project centers specifically on custom sheet metal fabrication rather than standard HVAC installation or repair work
- ✓ You have a direct referral from someone who has used Martinez for residential HVAC work and can speak to their current capabilities and service quality
- ✓ You're willing to conduct additional vetting through references and detailed conversations to assess their residential HVAC expertise despite limited public feedback
Questions to Ask Before Hiring
- → Ask Martinez Sheet Metal directly about their residential HVAC service volume, how many furnace or AC installations they complete annually, and request references from recent heating and cooling projects similar to yours
- → Ask Martinez how their business splits between sheet metal fabrication and residential HVAC work, and whether they have dedicated HVAC technicians or primarily focus on ductwork and metal components
- → Ask both companies for detailed written proposals including equipment specifications, warranty terms, and timeline to compare their approach to your specific project
- → If considering Martinez, ask why their customer review presence is limited and request contact information for at least three recent residential HVAC clients
The Bottom Line
For standard residential HVAC work—furnace replacement, AC installation, heat pump conversion, or system maintenance—Hassler Heating And Air Conditioning is the clearer choice. Their 26 years of HVAC specialization, consistent customer praise for thorough diagnostics and communication, and documented project range directly match typical homeowner needs. Martinez Sheet Metal's 62-year history is notable, but without customer feedback confirming residential HVAC capabilities and service quality, you'd be taking an unnecessary risk. Choose Hassler unless your project involves specialized sheet metal fabrication that goes beyond standard residential HVAC work, and even then, verify Martinez's specific experience with your project type through multiple references before proceeding.
Get Up to 3 Free Quotes
Compare prices from licensed, verified contractors
Frequently Asked Questions
Longevity indicates business stability, but 26 years of documented HVAC specialization is more relevant than 62 years of sheet metal licensure without clear residential heating and cooling service history. Hassler has verifiable experience across the full range of HVAC projects from diagnostics to complex installations. For standard heating and cooling work, specialized experience matters more than licensure duration alone.
This could indicate they primarily serve commercial clients, focus on sheet metal fabrication rather than residential HVAC service, or simply haven't prioritized collecting customer feedback. Without reviews, you can't assess their communication style, reliability, or quality on residential projects. Ask Martinez directly about their residential service volume and request multiple recent references before committing.
Sheet metal fabrication skills are valuable for custom ductwork, but comprehensive HVAC service requires much more than metal fabrication—including system sizing, airflow calculations, refrigerant handling, and diagnostic expertise. Hassler's documented ductwork replacement projects suggest they handle this work competently. If your project involves unusual custom fabrication beyond standard residential ductwork, discuss specific requirements with both companies.
Not automatically. For residential HVAC work, choose based on documented expertise in heating and cooling systems, verifiable customer satisfaction, and clear communication about your specific project. Hassler provides substantially more evidence of residential HVAC capability and customer satisfaction. If considering Martinez, you'll need to conduct additional vetting to establish their residential service track record independently.
Looking for the Best?
See our ranked list of top plumbing contractors in Contra Costa.
Other Contra Costa Plumbing Contractors Comparisons
Air Synergy
★ 4.9
Hassler Heating And Air Conditioning
★ 4.9
Bay Air Systems
★ 5.0
Hassler Heating And Air Conditioning
★ 4.9
Hassler Heating And Air Conditioning
★ 4.9
Matrix HG
★ 3.7
Bel Air Mechanical
★ 4.3
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 12, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
Get in Touch
Have questions or feedback? We'd love to hear from you.