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Ongaro & SonsHVAC contractor in San Anselmo, CA

Ongaro & Sons is an HVAC contractor at 11 Ross Ave, San Anselmo, CA 94960, ranked #1 of 264 HVAC contractors in San Anselmo and rated 4.9 from 762 Google reviews. Open 24 hours a day, 7 days a week.

San Anselmo, CAUpdated 0 paid placements in any rankingHow we rank

Call (415) 523-3755Website ↗

Key facts

Key facts about Ongaro & Sons
Address11 Ross Ave, San Anselmo, CA 94960Get directions
Phone(415) 523-3755
Websiteongaroandsons.com
HoursOpen 24 hours, 7 days a week
Google rating4.9 from 762 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category
  • Plumbingadditional Google category
  • Electricaladditional Google category
  • Solaradditional Google category

Service area

Serves San Anselmo and 11 towns within 25 miles: Kentfield, San Rafael, Fairfax, Larkspur, Corte Madera, Mill Valley, Lucas Valley-Marinwood, Strawberry, Tamalpais Valley, Tamalpais-Homestead Valley and Sausalito.

Based in San Anselmo, CAView on map

Opening hours

Opening hours for Ongaro & Sons
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

Ongaro & Sons compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Ongaro & Sons (this business)—664.9 (762)—YesYes
Bellows Plumbing, Heating, Cooling & Electrical#2634.9 (480)—YesYes7.1 mi
Albert Nahman Plumbing, Heating, and Cooling#3624.7 (3,311)—YesYes18.1 mi

See all 264 ranked HVAC contractors in San Anselmo

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.9from 762 Google reviews

Hired Ongaro & Sons? Write a review

Questions about Ongaro & Sons

How is Ongaro & Sons ranked in San Anselmo?

Ongaro & Sons is ranked #1 of 264 HVAC contractors in San Anselmo by CR Score, with 66 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Ongaro & Sons’ hours?

Ongaro & Sons is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does Ongaro & Sons serve?

Serves San Anselmo and 11 towns within 25 miles: Kentfield, San Rafael, Fairfax, Larkspur, Corte Madera, Mill Valley, Lucas Valley-Marinwood, Strawberry, Tamalpais Valley, Tamalpais-Homestead Valley and Sausalito. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about Ongaro & Sons?

Ongaro & Sons has a rating of 4.9 from 762 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Ongaro & Sons?

Call Ongaro & Sons on (415) 523-3755. The business is at 11 Ross Ave, San Anselmo, CA 94960. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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