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Expert HVAC Diamond BarHVAC contractor in Diamond Bar, CA

Expert HVAC Diamond Bar is an HVAC contractor at 23545 Palomino Dr #104, Diamond Bar, CA 91765, ranked #31 of 1,311 HVAC contractors in Diamond Bar and rated 5.0 from 34 Google reviews. Open 24 hours a day, 7 days a week.

Diamond Bar, CAUpdated 0 paid placements in any rankingHow we rank

Call (909) 300-4692

Key facts

Key facts about Expert HVAC Diamond Bar
Address23545 Palomino Dr #104, Diamond Bar, CA 91765Get directions
Phone(909) 300-4692
HoursOpen 24 hours, 7 days a week
Google rating5.0 from 34 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Diamond Bar and 11 towns within 25 miles: Walnut, Chino Hills, Pomona, South San Jose Hills, San Dimas, La Verne, Charter Oak, Rowland Heights, Covina, Los Serranos and Chino.

Based in Diamond Bar, CAView on map

Opening hours

Opening hours for Expert HVAC Diamond Bar
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

Expert HVAC Diamond Bar compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Expert HVAC Diamond Bar (this business)—615.0 (34)—YesYes
Cooling & Heating Repair#29614.8 (402)—YesYes9.5 mi
Air Med Heating & Air Conditioning#30615.0 (303)—YesYes6.5 mi
AIR NOW HEATING & COOLING INC#32605.0 (81)—YesYes6.5 mi

See all 1311 ranked HVAC contractors in Diamond Bar

Reviews

ContractorsRanked reviews

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Google

5.0from 34 Google reviews

Hired Expert HVAC Diamond Bar? Write a review

Questions about Expert HVAC Diamond Bar

How is Expert HVAC Diamond Bar ranked in Diamond Bar?

Expert HVAC Diamond Bar is ranked #31 of 1,311 HVAC contractors in Diamond Bar by CR Score, with 61 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 Expert HVAC Diamond Bar’s hours?

Expert HVAC Diamond Bar 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 Expert HVAC Diamond Bar serve?

Serves Diamond Bar and 11 towns within 25 miles: Walnut, Chino Hills, Pomona, South San Jose Hills, San Dimas, La Verne, Charter Oak, Rowland Heights, Covina, Los Serranos and Chino. 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 Expert HVAC Diamond Bar?

Expert HVAC Diamond Bar has a rating of 5.0 from 34 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 Expert HVAC Diamond Bar?

Call Expert HVAC Diamond Bar on (909) 300-4692. The business is at 23545 Palomino Dr #104, Diamond Bar, CA 91765. Ask for a written estimate before any work starts.

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