Asco Service vs Global Heating And Cooling Services
Santa Clara HVAC Contractors Comparison · Updated March 2026
Global Heating And Cooling Services brings comprehensive HVAC expertise with strong customer feedback, while Asco Service has veteran tenure but limited verifiable project history.
| Asco Service | Global Heating And Cooling Services | |
|---|---|---|
| Rating | ★ 1.0 | ★ 5.0 |
| Years Licensed | 26 years | 9 years |
| License # | 778556 | 1025424 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Gilroy, CA | Milpitas, CA |
| Website | ascoair.com | www.goglobalhvac.com |
Key Differences
What Customers Say
Global Heating And Cooling Services
Customers consistently highlight rapid emergency response, technicians who diagnose issues within minutes, and honest recommendations that prioritize repair over replacement when feasible.
Key Takeaway: Global Heating And Cooling Services has substantial customer feedback verifying service quality and HVAC expertise, while Asco Service lacks reviews to confirm current capabilities despite longer licensing history.
Customer Reviews
Asco Service
No reviews available
Global Heating And Cooling Services
John did a great job walking me through a quick fix to get my Nest thermostat to charge again by phone. Would highly recommend Global Heating and Cooling Services.
Joey came by promptly and on time, took a look at the hvac and immediately saw the problem. He got it fixed up the next day and the overall cost was really reasonable. All communication was quick and ...
I contacted John via text on Tuesday night. He got right back and scheduled to come out the next day. He showed up early, fixed the furnace quickly and charged me a very reasonable price (much less th...
Consider Asco Service if...
- ✓ You prioritize maximum licensing tenure above all other factors and value a contractor with over two decades of continuous California licensing history.
- ✓ You're located in Gilroy or southern Santa Clara County and prefer working with a locally-based contractor in your immediate area.
- ✓ You're comfortable proceeding with limited customer feedback and are willing to request detailed references directly from the company before hiring.
Consider Global Heating And Cooling Services if...
- ✓ You need emergency HVAC service or value same-day response capability when heating or cooling systems fail unexpectedly.
- ✓ Your project involves comprehensive HVAC work like full system replacement, heat pump installation, or ductwork modifications requiring demonstrated specialization.
- ✓ You want verifiable customer feedback showing technicians who diagnose issues quickly, explain options clearly, and recommend repairs over replacements when feasible.
- ✓ You prefer working with a company where the owner maintains direct involvement in service coordination and customer communication.
Questions to Ask Before Hiring
- → Ask Asco Service for references from recent HVAC projects similar to yours, particularly if you need anything beyond basic heater repair.
- → Ask Asco Service about their current service volume and how many HVAC technicians they employ to understand their active business operations.
- → Ask Global Heating And Cooling Services about typical response times for non-emergency appointments in your specific area of Santa Clara County.
- → Confirm with both companies whether they stock common parts for your specific HVAC equipment brand to avoid delays.
The Bottom Line
For most homeowners needing HVAC service in Santa Clara County, Global Heating And Cooling Services presents the clearer choice with verifiable expertise across furnace, AC, heat pump, and ductwork projects, plus customer feedback confirming quick diagnosis and honest recommendations. The company's 9 years of focused HVAC specialization with active owner involvement provides more assurance than Asco Service's longer licensing tenure without corresponding project documentation. If you're in Gilroy and willing to thoroughly vet Asco Service through direct references, their veteran status may appeal to you, but you'll need to confirm their current HVAC capabilities yourself. For emergency situations or complex installations, Global's demonstrated rapid response and comprehensive service range make them the more reliable option.
Get Up to 3 Free Quotes
Compare prices from licensed, verified contractors
Frequently Asked Questions
Not necessarily. Licensing tenure shows sustained business operations, but the limited documentation of HVAC projects for Asco Service makes it difficult to verify depth of heating and cooling specialization. Global demonstrates clear HVAC focus with documented experience across furnace, AC, heat pump, and ductwork projects. For specialized work, ask Asco Service directly about their recent HVAC project history and technician training.
It's significant if your system fails during extreme weather when comfort and safety are urgent concerns. Customer feedback confirms Global accommodates emergency calls quickly, with technicians diagnosing problems within minutes of arrival. This matters most during heat waves or cold snaps when you can't wait days for service. For routine maintenance or planned replacements, this advantage is less critical.
It's a legitimate consideration when comparing contractors. The absence of review feedback means you can't verify current service quality, technician expertise, or how the company handles problems when they arise. Before hiring, request multiple recent references and speak with those customers directly about their experiences. Ask specific questions about diagnosis accuracy, pricing transparency, and how any complications were resolved.
It depends on your specific location and service urgency. For emergency calls, response time from the closer company matters more. For scheduled installations or maintenance, both can likely serve the full county effectively. Ask each company about their typical service radius and whether they charge travel fees for your address.
Looking for the Best?
See our ranked list of top hvac contractors in Santa Clara.
Other Santa Clara HVAC Contractors Comparisons
Global Heating And Cooling Services
★ 5.0
Supreme Air Systems
★ 4.9
Air Concepts
★ 4.7
Global Heating And Cooling Services
★ 5.0
Global Heating And Cooling Services
★ 5.0
Therma Tech
★ 4.9
Comfort Energy
★ 4.8
Global Heating And Cooling Services
★ 5.0
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 06, 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.
Compare Local Pros