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Diamond Air ServicesHVAC contractor in Ontario, CA

Diamond Air Services is an HVAC contractor at 1630 E Francis St ste c, Ontario, CA 91761, ranked #19 of 985 HVAC contractors in Ontario and rated 5.0 from 413 Google reviews. Open Monday to Saturday.

Ontario, CAUpdated 0 paid placements in any rankingHow we rank

Call (909) 713-6644Website ↗

Key facts

Key facts about Diamond Air Services
Address1630 E Francis St ste c, Ontario, CA 91761Get directions
Phone(909) 713-6644
Websitediamondairhvac.com
HoursMonday to Thursday: 7 AM – 6 PM; Friday: 7 AM – 5 PM; Saturday: 8 AM – 3 PM
Google rating5.0 from 413 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Ontario and 11 towns within 25 miles: Upland, Chino, Rancho Cucamonga, Montclair, Eastvale, Jurupa Valley, Los Serranos, Claremont, Glen Avon, Pomona and Norco.

Based in Ontario, CAView on map

Opening hours

Opening hours for Diamond Air Services
DayHours
Monday7 AM – 6 PM
Tuesday7 AM – 6 PM
Wednesday7 AM – 6 PM
Thursday7 AM – 6 PM
Friday7 AM – 5 PM
Saturday8 AM – 3 PM
SundayClosed
  • Open evenings — no
  • Open Saturdays
  • Open Sundays — no

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

Diamond Air Services compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Diamond Air Services (this business)—625.0 (413)—YesNo
Inland Pacific Air Conditioning#17625.0 (143)—YesYes8.0 mi
ABC Heating & Air Conditioning#18625.0 (392)—YesYes6.5 mi
RighTime Home Services#20614.7 (3,741)—YesYes16.4 mi

See all 985 ranked HVAC contractors in Ontario

Reviews

ContractorsRanked reviews

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Google

5.0from 413 Google reviews

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Questions about Diamond Air Services

How is Diamond Air Services ranked in Ontario?

Diamond Air Services is ranked #19 of 985 HVAC contractors in Ontario by CR Score, with 62 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 Diamond Air Services’ hours?

Diamond Air Services is open Monday to Saturday. Its listed hours are Monday to Thursday, 7 AM – 6 PM; Friday, 7 AM – 5 PM; Saturday, 8 AM – 3 PM. On Saturdays it is open 8 AM to 3 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Diamond Air Services serve?

Serves Ontario and 11 towns within 25 miles: Upland, Chino, Rancho Cucamonga, Montclair, Eastvale, Jurupa Valley, Los Serranos, Claremont, Glen Avon, Pomona and Norco. 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 Diamond Air Services?

Diamond Air Services has a rating of 5.0 from 413 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 Diamond Air Services?

Call Diamond Air Services on (909) 713-6644. The business is at 1630 E Francis St ste c, Ontario, CA 91761. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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