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Aranda Air vs Therma Tech
Santa Clara HVAC Contractors Comparison · Updated March 2026
Two veteran San Jose HVAC contractors with nearly identical credentials and similar reputations for honest diagnostics and responsive service.
| Aranda Air | Therma Tech | |
|---|---|---|
| Rating | ★ 4.7 | ★ 4.9 |
| Years Licensed | 17 years | 18 years |
| License # | 931855 | 913806 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | San Jose, CA | San Jose, CA |
| Website | arandaairhvac.com | www.thermatechhvac.com |
Key Differences
What Customers Say
Aranda Air
Customers consistently praise Aranda Air for diagnostic accuracy that identifies cost-effective repairs when other contractors recommended expensive full replacements.
Therma Tech
Customers highlight Therma Tech's comprehensive service approach with photo documentation, detailed explanations, and professional installation workmanship across both service calls and major projects.
Key Takeaway: Aranda Air's reputation centers specifically on avoiding unnecessary replacements through precise diagnosis, while Therma Tech's feedback emphasizes systematic processes and documentation across their broader service range.
Customer Reviews
Aranda Air
I was referred by our general contractor. I called the office on Friday because our heater would not turn on. Leslie sent a technician Saturday afternoon to fit my schedule. The technician diagnosed t...
Louis was super professional, knowledgeable, honest, and on time on a long weekend. They did a thorough diagnosis and fixed the AC issue in a short duration with a part on hand. They provided a reason...
They did a great job diagnosing and fixing our HVAC issues on time. Paul was very professional and courteous. Will do business with them again.
Therma Tech
Those of you reading my reviews, you know how important quality of service is to me. Any company I come in contact with, I pay close attention to their quality of service, value and even some time aft...
Everyone at Therma Tech was great to work with and professional. They worked with us to get the duct work done as soon as possible to get the heat back on for our tenants.
Very honest and knowledgable. They arrive right on time and are able to root-cause the issue and fix it in no time. Highly recommend them.
Consider Aranda Air if...
- ✓ You're facing a diagnosis dilemma where another contractor recommended full system replacement and you want a second opinion focused on cost-effective repair options before committing to major expense.
- ✓ Your project is strictly residential and you value a contractor whose entire 17-year track record centers on home HVAC rather than split between residential and commercial work.
- ✓ You prefer working with a company whose reputation specifically highlights finding less expensive solutions when feasible rather than defaulting to replacement recommendations.
Consider Therma Tech if...
- ✓ Your project involves ductwork replacement or modification beyond basic HVAC equipment, as Therma Tech explicitly lists comprehensive ductwork services in their capabilities.
- ✓ You want formal documentation systems including photo records of work performed and confirmed appointment scheduling via text and email for better project tracking.
- ✓ You're interested in establishing an ongoing maintenance relationship with comprehensive annual inspections rather than just addressing immediate repair or replacement needs.
- ✓ You have or may have future commercial HVAC needs in addition to residential work, as Therma Tech services both property types.
Questions to Ask Before Hiring
- → Ask each company about their approach when diagnosing a failing system: what percentage of their service calls result in repair versus replacement recommendations?
- → If your project involves ductwork, ask Aranda Air about their ductwork capabilities since it's not explicitly mentioned in their service description.
- → Ask about their current scheduling availability and typical response time for non-emergency installations during your preferred timeframe.
- → Request references from projects similar to yours completed within the past year to verify current crew quality and operational consistency.
The Bottom Line
You're choosing between two equally qualified veteran HVAC contractors with virtually identical credentials and similarly strong reputations. Neither presents more risk or significantly more experience than the other. Select Aranda Air if you're dealing with a diagnostic situation where you want a second opinion on whether repair is viable, or if you prefer a purely residential-focused contractor. Choose Therma Tech if your project involves ductwork services, you value formal documentation systems with photos and digital confirmations, or you want to establish an ongoing maintenance program. For straightforward installations or standard repairs, contact both for estimates and choose based on availability, communication quality during the estimate process, and which technician you feel more comfortable with. You can't make a wrong choice here based on credentials or experience.
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Frequently Asked Questions
No, the one-year difference is meaningless at this experience level. Both are veteran contractors with 17-18 years of continuous licensing, which means both have handled thousands of installations and diagnosed every common HVAC problem multiple times. Either company has the depth of experience to handle complex residential projects and unexpected complications.
Both handle the full spectrum from simple capacitor replacements to complete system installations with heat pumps and smart thermostats. Aranda Air's feedback particularly highlights diagnostic repairs that avoided replacements, while Therma Tech's reviews mention detailed installation workmanship. For diagnostic challenges, Aranda Air shows particular strength; for projects requiring formal documentation and coordination, Therma Tech's systems may provide more structure.
No, both provide identical protection with active licenses, workers compensation insurance, and $25,000 bonds. If a technician is injured at your home, both companies' workers comp covers it. If work isn't completed as agreed, both bonds provide the same financial recourse. Your liability risk and financial protection are equivalent regardless of which contractor you choose.
Not necessarily. Many HVAC contractors successfully serve both markets, and Therma Tech's customer feedback shows strong residential attention and responsiveness. The commercial capability could indicate broader technical experience with complex systems. However, if you prefer a contractor focused exclusively on residential work, Aranda Air's 17-year residential track record ensures that focus.
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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 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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