Compare Local Pros
Solar Technologies vs Hassler Heating And Air Conditioning
Contra Costa Electrical Contractors Comparison · Updated March 2026
You're comparing a solar specialist with a heating and cooling company, so your decision depends entirely on what system you need installed.
| Solar Technologies | Hassler Heating And Air Conditioning | |
|---|---|---|
| Rating | ★ 4.5 | ★ 4.9 |
| Years Licensed | 17 years | 26 years |
| License # | 932914 | 770180 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Ramon, CA | El Cerrito, CA |
| Website | solartechnologies.com | www.hasslerheating.com |
Key Differences
What Customers Say
Solar Technologies
Solar Technologies receives recognition for educational consultations and managing the complex solar permitting process, with professional installation crews completing clean work.
Hassler Heating And Air Conditioning
Hassler earns consistent praise for thorough diagnostic inspections with detailed technical explanations using photo documentation, along with responsive emergency service.
Key Takeaway: Solar Technologies' feedback centers on navigating solar-specific complexity like permitting and interconnection, while Hassler's reviews emphasize diagnostic precision and technical transparency for HVAC systems.
Customer Reviews
Solar Technologies
We're very happy with the personal attention we got from Liz at Solar Technologies. Every step of the way, from the original quote through the permitting and installation, went smoothly. Working with ...
One of the smoothest and stress free jobs I’ve ever experienced. Very knowledgeable and helpful technicians and customer service
Great company to work with. Sara was very helpful in scheduling and going over the work. Javier is an amazing guy - one man army - who can accomplish a lot of things including installation, checking, ...
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 Solar Technologies if...
- ✓ You need solar panel installation, system expansion, or solar-specific maintenance like panel cleaning and critter guard installation
- ✓ Your project requires navigating complex solar permitting, HOA approvals, or utility interconnection agreements
- ✓ You want a contractor with nearly two decades of experience in California's evolving solar incentive landscape and equipment technology
- ✓ You need post-installation solar support including inverter replacements or troubleshooting non-producing systems
Consider Hassler Heating And Air Conditioning if...
- ✓ You need heating or cooling system installation, repair, or replacement including furnaces, heat pumps, air conditioning, or ductwork
- ✓ Your HVAC system requires diagnostic work and you value detailed technical explanations with photo documentation
- ✓ You're planning home electrification projects involving heat pump conversions or mini-split installations
- ✓ You need responsive emergency service for heating or cooling failures, particularly during extreme weather
Questions to Ask Before Hiring
- → If considering both solar and heat pump installation for electrification, ask each contractor how they coordinate with the other trade and whether electrical panel upgrades will be needed
- → Ask about project timelines specific to your system type, as solar involves utility interconnection delays while HVAC projects typically complete faster
- → Request references from projects matching your specific scope, whether that's solar installation complexity or HVAC system type
The Bottom Line
This comparison only matters if you're confused about which home system you need. Choose Solar Technologies if you're installing or maintaining solar panels, expanding an existing system, or need solar-specific services. Choose Hassler if you need heating, cooling, ductwork, or HVAC maintenance and repairs. Both are well-established, properly licensed, and carry appropriate insurance. If you're planning comprehensive home electrification involving both solar and heat pump installation, you'll likely need both contractors working in coordination, with electrical panel upgrades addressed before either system installation begins.
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Frequently Asked Questions
Yes, and you likely would need both if you're adding solar panels and replacing gas heating with electric heat pumps. Solar Technologies would handle the solar installation and electrical production side, while Hassler would manage the heat pump installation and ductwork modifications. You'd want to coordinate timing so your electrical panel is properly sized for both systems.
Hassler has 26 years versus Solar Technologies' 17 years, but this comparison matters less than specialization depth. Both are veteran contractors with deep expertise in their respective fields. Hassler's additional years reflect longer HVAC industry presence, while Solar Technologies' 17 years covers most of California's modern solar era including evolving incentive programs and technology.
Both companies coordinate electrical work as part of their installations, but the data doesn't specify whether they perform panel upgrades directly or subcontract to licensed electricians. Ask each contractor directly how they handle electrical panel upgrades, who performs the work, and whether it's included in their project pricing or bid separately.
Hassler demonstrates clear responsiveness for HVAC emergencies based on customer feedback mentioning quick service during heating failures. Solar Technologies handles troubleshooting for non-producing solar systems, but solar repairs rarely qualify as true emergencies since you remain connected to grid power. For heating or cooling failures requiring immediate attention, Hassler is the relevant choice.
Looking for the Best?
See our ranked list of top electrical contractors in Contra Costa.
Other Contra Costa Electrical Contractors Comparisons
Diablo Solar Services
★ 4.2
Hassler Heating And Air Conditioning
★ 4.9
Got Watts?
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Hassler Heating And Air Conditioning
★ 4.9
West Coast Solar
★ 4.3
Hassler Heating And Air Conditioning
★ 4.9
Green Air Heating And Air Conditioning
★ 4.6
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.
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