Ongaro & Sons

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HVAC / plumbing contractor · Based in Petaluma, CA

(415) 741-2820 ongaroandsons.com

License: 215233 (self-stated on their site).

✓ Verified with the state: C36 - PLUMBING C-4 - BOILER, HOT WATER HEATING AND STEAM FITTING C20 - WARM-AIR HEATING, VENTILATING AND AIR-CONDITIONING C34 - PIPELINE C42 - SANITATION SYSTEM C43 - SHEET METAL C16 - FIRE PROTECTION C-61 / D21 - MACHINERY AND PUMPS C10 - ELECTRICAL C60 - WELDING C39 - ROOFING #215233 — Active , expires 01/31/2028 · state record (checked Aug 6, 2026).

About

HVAC/plumbing/electrical/solar company with a dedicated whole-home standby generator page covering install, repair, and maintenance; no specific generator brands named. (Summarized from the company's own website.)

Services

Commercial · Installation · Maintenance · Repair · Residential

Service area

Self-stated on the company's website.

Marin County , Napa County , Sonoma County

4 cities and towns listed

Marin City, Penngrove, Petaluma, Sebastopol

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