Compare Local Pros
Ais Heating And Air Conditioning vs Delcon Heating And Air Conditioning
Alameda HVAC Contractors Comparison · Updated March 2026
Delcon brings 40 years of licensing versus Ais's 18 years, but Ais shows significantly more detail about installation capabilities and project complexity.
| Ais Heating And Air Conditioning | Delcon Heating And Air Conditioning | |
|---|---|---|
| Rating | ★ 5.0 | ★ 5.0 |
| Years Licensed | 18 years | 40 years |
| License # | 919756 | 493271 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Livermore, CA | Livermore, CA |
| Website | aisheatingandair.com | — |
Key Differences
What Customers Say
Ais Heating And Air Conditioning
Customers consistently highlight Ais's installation crews, project coordination, clean work practices, and problem-solving abilities during complex projects with unexpected complications.
Delcon Heating And Air Conditioning
Customers emphasize Delcon's prompt service delivery, professional conduct, and educational explanations during service appointments.
Key Takeaway: Ais reviews focus specifically on installation work and project management, while Delcon reviews center on service appointments and customer education without mentioning installation complexity.
Customer Reviews
Ais Heating And Air Conditioning
I was very pleased with the AIS service as they were able to resolve the problem with my home furnace. The tech was very patient, thorough and knowledgeable. He checked my whole furnace and then was...
Bi-annual visit to check HVAC system and replace filter. Communication is super important to me and AIS is all over it with the text messaging to remind you and confirm your service and also when your...
Both visits were excellent. Pete diagnosed the problem yesterday, ordered the part and installed it today. The system is working and it is warming up the house. Pete is friendly yet focused on his...
Delcon Heating And Air Conditioning
I am extremely happy with the service I received from Delcon Heating. They were prompt, professional, and courteous. They took the time to explain everything to me and made sure I was comfortable with...
Consider Ais Heating And Air Conditioning if...
- ✓ Your project involves a complex installation such as adding ductwork to an older home, installing a mini-split system in a house without existing HVAC, or replacing multiple system components where coordination matters
- ✓ You value detailed communication throughout the project with daily updates, text message coordination, and thorough explanations of system operations after installation
- ✓ You want evidence of crews handling unexpected complications during installation, particularly relevant if your home is older and may have hidden issues
- ✓ You're interested in follow-up maintenance programs and long-term service relationships for newly installed equipment
Consider Delcon Heating And Air Conditioning if...
- ✓ Your project is primarily service-oriented rather than a major installation, such as diagnosing an existing system problem or maintaining current equipment
- ✓ You place high value on a contractor's business longevity, with 40 years of continuous operation suggesting deep roots in the community and sustained customer relationships
- ✓ You appreciate an educational approach where technicians take time to explain what they're doing and why, helping you understand your HVAC system better
- ✓ You prioritize prompt service delivery and professional conduct for routine appointments and scheduled maintenance
Questions to Ask Before Hiring
- → Ask Delcon specifically about their installation experience with the type of project you need, requesting recent examples of similar work and references from those projects
- → Ask Ais about their diagnostic capabilities for existing system problems if your need is service rather than installation
- → Ask both companies how long their current installation crews have been with the company, which matters more for complex projects than years the business has been licensed
- → Ask about warranty terms and who performs follow-up service if issues arise after installation
The Bottom Line
If your project involves a substantial installation—adding ductwork, installing a heat pump or mini-split system, or replacing major components in an older home—Ais demonstrates clearer evidence of handling that work with detailed project documentation and customer feedback about installation crews managing complications. Their communication practices and follow-up maintenance programs also suggest a structured approach to complex projects. If you're primarily seeking service and maintenance on existing equipment, Delcon's 40-year track record indicates exceptional business stability and their educational approach may appeal to homeowners who want to understand their systems. For most installation projects this week, Ais provides more specific evidence they regularly handle the work you need. Contact Delcon directly about installation experience if their longevity appeals to you, but verify they have recent, relevant project examples.
Get Up to 3 Free Quotes
Compare prices from licensed, verified contractors
Frequently Asked Questions
Not necessarily. Years licensed reflects business longevity, not necessarily installation specialization. Ais provides detailed documentation of complex installation projects including mini-splits, heat pumps, and ductwork retrofits, with customer feedback specifically mentioning installation crews and problem-solving during complicated projects. Delcon's reviews emphasize service delivery and education but don't specifically mention installation work. Ask Delcon directly about their installation experience for your specific project type.
Ais explicitly mentions follow-up maintenance programs and annual checkups on installed systems, with customers noting responsive warranty service. This suggests a structured approach to ongoing service relationships after installation. Delcon's 40-year history implies they'll be around for future service, but their reviews focus on service appointments rather than post-installation support. Ask both about their maintenance programs and how they handle service calls for equipment they installed.
Ais specifically lists ductwork installation and HVAC system retrofits in older homes without existing ductwork as part of their documented services, with customer feedback mentioning problem-solving when unexpected complications arise. This suggests hands-on experience with exactly this scenario. Delcon's available information doesn't specify experience with ductwork installation in older homes, so you'd need to ask them directly about projects similar to yours.
No, both carry the same $25,000 bond, which is California's standard contractor bond requirement. Both also maintain workers compensation insurance and active licenses. The meaningful differences are in their documented project experience and customer feedback patterns, not in their compliance credentials, which are equivalent.
Looking for the Best?
See our ranked list of top hvac contractors in Alameda.
Other Alameda HVAC Contractors Comparisons
Ais Heating And Air Conditioning
★ 5.0
Service Champions
★ 4.9
Ais Heating And Air Conditioning
★ 5.0
Eagle Air
★ 4.9
Ais Heating And Air Conditioning
★ 5.0
Bradford Air & Heating
★ 4.8
Ais Heating And Air Conditioning
★ 5.0
Superior Mechanical Services
★ 4.8
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.