Bay Area Service Hub Review
Family-owned since 1932, Ongaro & Sons is a fourth-generation HVAC, plumbing, and electrical contractor celebrating 93 years of service. Reviews consistently praise their professional, well-trained NATE-certified technicians who do work properly and maintain clean job sites. Best for homeowners in Sonoma and Marin Counties seeking an established contractor with multi-generational expertise, though pricing transparency scores below industry average.
Evaluation Scores
Workmanship
8.5
Quality of work performed
Customer Service
8.0
Responsiveness & communication
Pricing
7.0
Clear & honest pricing
Reliability
8.0
Consistency & dependability
Expertise
9.0
Technical skills & certifications
Warranty Support
8.0
Post-service coverage
Essential Q&A
What makes this contractor stand out?
Four generations of family ownership since 1932 with NATE-certified technicians, Diamond Certified status for 10 consecutive years, and a 100% satisfaction guarantee backed by 93 years of community reputation.
Who should hire this contractor?
Homeowners in Marin, Sonoma, and Napa Counties who prioritize quality workmanship and expertise over lowest price, and value a well-established company with multi-generational customer relationships.
Insider tip
Sign up for their yearly maintenance plan—reviews consistently mention they proactively contact customers for scheduled maintenance. Be aware their $98 minimum service call covers diagnosis only, and request detailed cost breakdowns upfront since only 68% of Checkbook respondents rated them superior for early cost disclosure.
Frequently Asked Questions
Is this contractor licensed and insured in California?
Yes. California contractor license #215233 is active with a $25,000 contractor bond filed with American Contractors Indemnity Company and workers' compensation coverage verified through Diamond Certified credential checks.
Does this company offer 24/7 emergency services?
No. Ongaro & Sons does not offer 24/7 emergency services. Their regular hours are Monday-Friday 7:30am-5:00pm and Saturday 7:30am-1:30pm, closed Sundays.
What kind of warranty is provided on their workmanship?
Yes. They offer a 100% satisfaction guarantee on all work and provide parts and labor warranties that go beyond manufacturer and industry standards, according to their Diamond Certified profile.
Do they provide free estimates or flat-rate pricing?
Yes. They offer free project estimates and provide flat-rate pricing with no surprise charges. They also offer instant on-screen estimates via their website for HVAC systems, water heaters, and electrical panels.
How long has this business been serving the Bay Area?
Serving the Bay Area for 93 years since 1932, when Ernest V. Ongaro founded the company in Fairfax. Now in their fourth generation of family ownership.
Are their technicians background-checked and certified?
Yes. All HVAC technicians are NATE Certified and plumbers hold PHCC (Plumbing-Heating-Cooling Contractors Association) Journeylevel certifications. The company emphasizes ongoing in-house and industry training.
Platform Scorecard
Cross-platform reputation comparison
Google
2,497 reviews
Yelp
480 reviews
BBB
A+
3 complaints (3 yr)
Diamond Certified
Certified
10 years
278 verified surveys
Checkbook.org
superior rating
38 ratings
Rating Gap Alert: Google rating is
0.8 stars higher than Yelp.
This may indicate platform-specific review patterns.
Services Offered
Areas of Expertise
Certifications
Authorized Dealer
Service Areas
Professional Memberships
License Details
Status
Active
Classifications
Bond Amount
$25,000
Workers Comp
Active
Disciplinary Actions
None
Verify This Information
All data sourced from official platforms
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