Compare Local Pros
Air Concepts vs Therma
Santa Clara HVAC Contractors Comparison · Updated March 2026
Air Concepts specializes in residential HVAC service while Therma is a commercial and industrial mechanical contractor focused on custom fabrication.
| Air Concepts | Therma | |
|---|---|---|
| Rating | ★ 4.7 | ★ 4.6 |
| Years Licensed | 22 years | 9 years |
| License # | 824764 | 1027316 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Santa Clara, CA | San Jose, CA |
| Website | www.airconcepts.us | www.therma.com |
Key Differences
What Customers Say
Air Concepts
Customers praise Air Concepts for prompt scheduling, knowledgeable technicians who explain system issues clearly, and efficient resolution of both routine maintenance and emergency repairs.
Therma
Customers highlight Therma's high-quality custom fabrication work, manufacturing precision for specialty components, and professional approach to commercial mechanical projects.
Key Takeaway: Air Concepts reviews focus on residential service experiences like furnace breakdowns and homeowner communication, while Therma reviews emphasize industrial manufacturing quality and commercial mechanical capabilities, confirming their distinct market positions.
Customer Reviews
Air Concepts
Customer service's excellent ! Highly recommendable .
The technicians provide excellent service and demonstrate a high level of professionalism.
Air Concepts is the real thing when it comes to all phases of heating and air conditioning. Special shout out to Karla , Francisco , and Anthony for their friendly and professional service. Actually h...
Therma
Did Stanford blood donation here today.
Can't say enough about this company this group of guys the work that they do and the high technology that they are getting involved in. There is a manager Paul there, great guy hard worker. The compan...
Top notch mechanical contractor. Very professional.
Consider Air Concepts if...
- ✓ You need residential HVAC services like furnace repair, AC installation, heat pump replacement, or thermostat upgrades for your home
- ✓ You want a contractor with over two decades of experience diagnosing hidden problems in residential heating and cooling systems
- ✓ You value clear communication and prompt scheduling with technicians who explain system issues in homeowner-friendly terms
- ✓ You're working with a home warranty company or need same-day or next-day service for emergency breakdowns
Consider Therma if...
- ✓ You own a commercial facility or industrial property requiring custom mechanical fabrication or specialty ducting components
- ✓ Your project involves medical gas systems, process equipment, or high-volume manufacturing of HVAC components
- ✓ You need precision custom metal fabrication work with dimensional accuracy for commercial applications
- ✓ You're managing a Silicon Valley commercial property requiring professional mechanical contracting services beyond residential scope
Questions to Ask Before Hiring
- → Ask Therma directly if they provide residential HVAC services or if their focus is exclusively commercial and industrial work
- → Ask Air Concepts for references from projects similar to yours in terms of system type and scope
- → Confirm availability and typical response times for both emergency repairs and scheduled installations
The Bottom Line
For homeowners needing HVAC service, Air Concepts is the clear choice. They operate specifically in the residential market with 22 years of experience handling the furnace repairs, AC installations, heat pump replacements, and emergency breakdowns that homeowners face. Therma excels at commercial mechanical work and custom industrial fabrication, but their capabilities and project history indicate they serve commercial and industrial clients rather than residential homeowners. Unless you own a commercial facility or need specialty industrial fabrication, contact Air Concepts for your home heating and cooling needs.
Get Up to 3 Free Quotes
Compare prices from licensed, verified contractors
Frequently Asked Questions
Based on their project history and capabilities, Therma focuses on commercial and industrial mechanical work including custom fabrication and manufacturing. For typical residential furnace repairs, AC installations, or home HVAC service, Air Concepts is designed for homeowner needs. Contact Therma directly to confirm whether they serve residential clients.
Air Concepts' 22 years in the residential HVAC space means more exposure to diagnosing older systems, handling complications during replacements, and understanding home-specific challenges like permit processes and warranty coordination. This experience depth matters particularly for older homes or complex diagnostic situations.
Air Concepts operates with scheduled appointments typically available within days and handles emergency situations like furnace failures and AC breakdowns for homeowners. Therma's commercial focus suggests they operate on different timelines suited to industrial project schedules rather than residential emergency service.
Air Concepts provides duct replacement and repair as part of residential HVAC service. Therma manufactures custom ducting components but for commercial and industrial applications. For standard residential ductwork, Air Concepts handles this routinely; for highly specialized custom fabrication, ask Therma if they take residential projects.
Looking for the Best?
See our ranked list of top hvac contractors in Santa Clara.
Other Santa Clara HVAC Contractors Comparisons
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.
Get in Touch
Have questions or feedback? We'd love to hear from you.