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Air Doctor vs Old Redwood Heating And Cooling
Sonoma HVAC Contractors Comparison · Updated March 2026
Air Doctor brings 17 years of specialized duct cleaning experience versus Old Redwood's newer HVAC installation and repair focus.
| Air Doctor | Old Redwood Heating And Cooling | |
|---|---|---|
| Rating | ★ 5.0 | ★ 5.0 |
| Years Licensed | 17 years | 0 years |
| License # | 935257 | 1147019 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Rohnert Park, CA | Windsor, CA |
| Website | www.airdoctor.org | — |
Key Differences
What Customers Say
Air Doctor
Air Doctor customers consistently praise prompt scheduling, efficient work completion, professional home respect, and the company's ability to identify serious safety hazards during routine maintenance.
Old Redwood Heating And Cooling
Old Redwood customers emphasize the thoroughness of service that goes beyond the basic repair, with detailed technical explanations that help homeowners understand their systems.
Key Takeaway: Air Doctor demonstrates operational maturity with structured processes and repeat annual customers, while Old Redwood shows the personalized attention and educational focus characteristic of newer businesses establishing their reputation.
Customer Reviews
Air Doctor
Ryan & David came over and did an excellent job cleaning out our dryer vent. Arrived accessed the issue and went straight to work. They were in and out in no time. Appreciate the work yall.
Highly recommend. Incredible communication on timing of arrival, professional, and thorough. Daniel and Ryan really went above and beyond to make sure our dryer vent was fixed and cleaned out. Will de...
Today we had Air Doctor come clean out our dryer vent. Definitely a very good experience. Prompt, polite and professional company from my phone call with Tammy to the fellows Ryan and Jordan who cam...
Old Redwood Heating And Cooling
Justin at Old Redwood H&C is professional, honest, very knowledgeable, helpful and priced fairly. Was really so easy to have his Company replace my furnace. He goes beyond expectations to explain ever...
I had an outstanding experience with Justin at Old Redwood H&C. He helped troubleshoot my broken HVAC system and went the extra mile to ensure everything was thoroughly cleaned and fully serviced afte...
Consider Air Doctor if...
- ✓ You need dryer vent or air duct cleaning services, which is Air Doctor's exclusive specialization with proven methods and equipment
- ✓ Your property has older ductwork or complex ventilation systems where 17 years of troubleshooting experience provides valuable expertise
- ✓ You value established operational reliability with structured scheduling, advance notifications, and proven service delivery systems
- ✓ You want to work with a company that has handled thousands of similar jobs and developed a base of long-term repeat customers
Consider Old Redwood Heating And Cooling if...
- ✓ You need furnace replacement, HVAC system installation, or equipment repair work rather than duct cleaning services
- ✓ You're willing to work with a newer contractor in exchange for high owner involvement and personalized attention throughout your project
- ✓ Your project is straightforward enough that extensive experience diagnosing rare complications is less critical
- ✓ You prioritize detailed technical explanations and educational communication during service, which customers consistently mention
Questions to Ask Before Hiring
- → For Old Redwood: Ask for references from furnace replacements or HVAC installations completed in the past year, specifically projects similar in scope to yours
- → For Old Redwood: Ask how many installations the lead technician has personally completed and how they handle unexpected complications during equipment replacement
- → For Air Doctor: Confirm their duct cleaning includes video documentation before and after, and ask what specific equipment they use for your type of system
- → For both: Ask about warranty coverage on their work and what situations would require follow-up service
The Bottom Line
Choose based on your actual service need, not company comparison, because these contractors serve completely different functions. If you need air duct or dryer vent cleaning, Air Doctor's 17 years of specialized experience, proven processes, and established customer base make them the clear choice. If you need furnace replacement, HVAC repair, or system troubleshooting, Old Redwood is your only option between these two, though their newer status warrants asking detailed questions about technician experience and requesting recent references. Both maintain proper licensing and insurance, but don't hire a duct cleaning specialist for equipment installation or vice versa.
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Frequently Asked Questions
No, Air Doctor specializes exclusively in duct and dryer vent cleaning services, not equipment installation or repair. If you need your ducts cleaned, they're the experienced choice. If you need a furnace replaced or your HVAC system repaired, Old Redwood provides those services.
Their newer status means fewer installations completed and less experience handling unexpected complications like outdated electrical systems or challenging equipment access. Ask specifically about their lead technician's total career experience and request references from recent similar projects. The high owner involvement may offset some concerns, but expect less institutional knowledge than a veteran contractor.
Yes, particularly for older homes or commercial properties where ductwork may contain unexpected hazards, structural obstacles, or require specialized cleaning approaches. Air Doctor's experience means they've encountered nearly every scenario and developed efficient solutions. Their video inspection capability also reflects investment in professional-grade equipment that comes with established operations.
Both companies receive positive feedback on fair pricing relative to work quality. Air Doctor's efficiency from years of specialization may translate to faster service, while Old Redwood's thorough approach and detailed explanations suggest they invest significant time in each project. The value comparison depends entirely on which service you actually need.
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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 12, 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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