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3rdGen Heating & Cooling vs Alligator Plumbing
Alameda Plumbing Contractors Comparison · Updated March 2026
You're comparing two different trades: 3rdGen specializes in HVAC heating and cooling systems, while Alligator focuses exclusively on plumbing work.
| 3rdGen Heating & Cooling | Alligator Plumbing | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.8 |
| Years Licensed | 4 years | 11 years |
| License # | 1086898 | 995431 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Berkeley, CA | Castro Valley, CA |
| Website | 3rdgen.io | www.alligatorplumbing.biz |
Key Differences
What Customers Say
3rdGen Heating & Cooling
Customers consistently highlight 3rdGen's responsive scheduling, meticulous installation quality particularly with mini-split systems, and the owner's direct involvement in explaining technical details.
Alligator Plumbing
Alligator's customers emphasize long-term repeat relationships spanning years, transparent upfront pricing with no surprise charges, and thorough explanations of repair versus replacement options.
Key Takeaway: While both companies earn praise for responsiveness and owner communication, Alligator's reviews show deeper customer relationships built over nearly a decade, compared to 3rdGen's shorter but equally positive track record.
Customer Reviews
3rdGen Heating & Cooling
Love 3rd Gen, Devin and the team! They are knowledgeable, professional, kind, and generous. Highly recommend working with them!
I am so glad that I found 3rd Gen Heating & Cooling. The team is smaller so it felt so much more intentional and trustworthy. They pay such great attention to detail, in which they were able to meet m...
I got my HVAC system installed by 3rd gen in 2022, this week the heater stopped working . I gave them a call and Devin and Ceaser visited today to fix the issue. They were at the house right at the ap...
Alligator Plumbing
We hired Alligator Plumbing because they were recommended by a friend, and we couldn't have been happier. They were very quick to respond and made it to our business in less than 24 hours to get us w...
Highly recommend Alligator Plumbing! Jason and his crew are friendly, knowledgeable and do great work. I have had them out multiple times for different reasons, they can handle and advise on anything....
If you need plumbing work, make sure to get a quote from Alligator Plumbing. I did extensive research of my issue prior to getting it looked to set expectations. I called a big box company and they s...
Consider 3rdGen Heating & Cooling if...
- ✓ You need HVAC services including furnace repair, air conditioning installation, or heat pump systems rather than plumbing work
- ✓ You're specifically interested in Mitsubishi mini-split systems or energy-efficient heat pump installations where 3rdGen has developed focused expertise
- ✓ You value direct owner communication throughout your project and prefer working with a smaller, more personalized team
- ✓ You need heating or cooling service quickly, as the company offers same-day and next-day appointments when available
Consider Alligator Plumbing if...
- ✓ You need plumbing services including water heater replacement, pipe repairs, fixture installations, or bathroom remodeling rather than HVAC work
- ✓ You're facing a complex or unusual plumbing situation where 11 years of licensed experience helps with diagnosing hidden issues or handling older home complications
- ✓ You want a plumbing company with a long track record of repeat customers, some spanning nine years, indicating consistent service quality
- ✓ You appreciate transparent upfront pricing and need quick response times for urgent plumbing emergencies
Questions to Ask Before Hiring
- → For 3rdGen: Ask for references from heat pump or mini-split installations completed in the past year, particularly if your project involves complex retrofitting in an older home
- → For Alligator: Ask about their experience with your specific plumbing issue, especially if you have an older home with galvanized pipes or unusual configurations
- → For both: Confirm current availability and whether the owner will be directly involved in your specific project
- → For both: Request a detailed written estimate that breaks down labor, materials, and permits so you can compare pricing structures
The Bottom Line
Your decision here is straightforward: choose based on which trade you need. For heating, cooling, air conditioning, furnaces, or heat pumps, hire 3rdGen Heating & Cooling. For water heaters, pipes, fixtures, drains, or bathroom plumbing, hire Alligator Plumbing. Both companies are properly licensed and insured with strong customer feedback in their specialties. If you're upgrading to energy-efficient mini-split or heat pump systems, 3rdGen's specific expertise makes them the clear choice for that HVAC work. If you're dealing with plumbing issues or remodeling bathrooms, Alligator's 11 years of experience provides deeper knowledge for complex situations.
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Frequently Asked Questions
Four years of focused HVAC experience is sufficient for standard installations and repairs, and 3rdGen's customer feedback shows competent work particularly with modern heat pump systems. However, if you have an older home with unusual ductwork or complex heating system issues, Alligator's additional seven years in their plumbing trade means more exposure to unexpected complications. The experience gap matters more for complex diagnostic work than straightforward replacements.
No, these are separate trades requiring different licenses. 3rdGen holds an HVAC contractor license and specializes in heating and cooling systems, while Alligator holds a plumbing license for water and drainage systems. You'll need to hire them for different projects, though some work like tankless water heater installations may involve coordination between both trades.
Both companies receive consistent feedback about honest, reasonable pricing in their respective trades, with customers noting cost savings compared to competitors. Since they serve completely different systems, direct price comparison isn't meaningful. Request detailed written estimates from each for your specific HVAC or plumbing project to evaluate their pricing structure.
Call 3rdGen for the heat pump system itself, as that's their core HVAC expertise. They can coordinate with licensed electricians for electrical work, but you'd need to hire Alligator separately if your project requires condensate drain modifications or other plumbing changes. Ask 3rdGen upfront what trade coordination your specific installation requires.
Looking for the Best?
See our ranked list of top plumbing contractors in Alameda.
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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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