Ongaro & Sons

$8.0M revenue • 40 employees • 11 Ross Ave, San Anselmo, CA, 94960, United States

Last Updated Aug 21, 2026

Company Overview

Company Name

Ongaro & Sons

Address

11 Ross Ave, San Anselmo, CA, 94960, United States

Approx. Annual Revenue

$8.0M

Employees

40

Established

1999

Google Reviews

4.8 (764 reviews)

Google Business Category

Electrician

Locations

4

About Ongaro & Sons

Carmichael, CA-based company with approximately 35 employees offers a wide range of residential and commercial plumbing, heating, cooling, and electrical services. The company is PHCC certified and employs NATE certified HVAC technicians, providing a variety of services including water heater repair, furnace installation, and smart home technology.

Business Profile

Read from the Ongaro & Sons website on Oct 12, 2026. Hover an item to see the exact wording it came from.

How Ongaro & Sons works

Licenses, certifications & awards

About the website

Website quality (AI-assessed)
8/10 · Current copyright 2026; Complete service and contact info
Footer copyright year
2026

Recent changes

What changed on the Ongaro & Sons website and Google listing, as detected by Coldlytics on each visit.

  1. Google Business category is now HVAC contractor

  2. Google Business category is now Electrician

  3. Google Business category is now Plumber

  4. Google reviews went from 765 to 777

  5. Google Business category is now Plumber

  6. Google Business category is now HVAC contractor

  7. Google Business category is now Electrician

  8. Google reviews went from 1,227 to 1,226

  9. Google Business category is now Plumber

  10. Google Business category is now Electrician

  11. Google Business category is now Plumber

  12. Google Business category is now Plumber

  13. Google Business category is now Plumber

Coldlytics tracks changes like these across millions of businesses, so you can reach companies the moment they add a pixel, start hiring, or switch software.

Find companies by what just changed →

Ongaro & Sons locations

4 Google Business Profile listings.

LocationGoogle categoryReviewsStatus
11 Ross Ave, San Anselmo, CAprimaryElectrician 4.8 (764)Claimed
2995 DUTTON AVE,, Santa Rosa, CA———
250 D St Ste 700B, Santa Rosa, CAHVAC contractor 4.8 (1,226)Claimed
719 Southpoint Blvd, Petaluma, CAElectrician 4.9 (777)Claimed

HVAC Companies near San Anselmo, CA

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Frequently Asked Questions about Ongaro & Sons

Categories

Technologies Used

Social Profiles

Key Decision Makers

Ernest Ongaro President
LinkedIn
Nicholas Hartman General Manager
LinkedIn
Ernie Ongaro Owner
LinkedIn