HVACService.io logoHVACService.io

HVAC Services in Ontario, CA

33 HVAC contractors found

Need emergency service? 10 HVAC providers in Ontario offer 24/7 availability→
HVAC ServiceAC RepairHVAC RepairAC InstallationHVAC MaintenanceCommercial HVACEmergency HVACAC Replacement

All Pro Cooling, Heating, Plumbing & Electrical

4.8(8,315)
24/7 Highly Rated

“Technicians are named in every positive review, with Oscar, Art, Jovaughn, and Cord appearing repeatedly for…”

2311 E Locust St, Ontario, CA 91761
Call

Diamond Air Services

5.0(418)
Highly Rated

“All 419 reviews carry a 5-star rating, and named technicians recur frequently enough to suggest consistent…”

1630 E Francis St ste c, Ontario, CA 91761
Call

NexGen HVAC & Plumbing

4.7(574)
24/7

“Positive reviews consistently praise diagnostic thoroughness and technician communication, with Carlos…”

1428 S Grove Ave Unit B, Ontario, CA 91761
Call

Northstar Plumbing, Heating and Air Conditioning

4.7(334)

“Four of four named reviews award 4 or 5 stars, with three specifically mentioning punctual arrival and quoted…”

1351 S Grove Ave #110, Ontario, CA 91761
Call

Monkey Wrench Plumbing, Heating, Air & Electric

5.0(124)
24/7 Highly Rated

“All 124 reviews award 5 stars, with technicians named across multiple entries including Louis, Andrew, Ghino,…”

3200 E Guasti Rd Ste 100-G, Ontario, CA 91761
Call

Macawsome Heating & Cooling

4.8(149)
Highly Rated

“All six accessible reviews award five stars, with three specifically praising same-day or next-day…”

4375 E Lowell St Suite N, Ontario, CA 91761
Call

Magnison and Moen Inc

4.9(42)

“All eight featured reviewers award 5 stars, with technicians Kevin and Ryan named repeatedly for their…”

1701 S Vineyard Ave H, Ontario, CA 91761
Call

Ontario Heating & Air Conditioning

4.6(32)

“32 reviews yield a 4.6-star average rating, with all available reviewer feedback reflecting 5-star…”

125 E California St, Ontario, CA 91761
Call

Tario Air Conditioning & Heating

5.0(23)

“All 19 reviewers award 5 stars, with 7 specifically mentioning same-day or emergency response times. Four…”

11193 Central Ave, Ontario, CA 91762
Call

US Air Conditioning Distributors

4.1(30)

“Six of eight reviewers praise the knowledgeable staff and fast service, with Matthew Gross noting a…”

3062 Inland Empire Blvd, Ontario, CA 91764
Call

Air Control Systems Inc

4.5(15)

“5 of 7 detailed reviewers award five stars, praising technical skill and friendly service. Negative reviews…”

1940 S Grove Ave, Ontario, CA 91761
Call

Ontario Refrigeration Services Inc

4.0(21)

“Four of eight displayed reviews award five stars, with customers praising diagnostic skill, knowledgeable…”

635 S Mountain Ave, Ontario, CA 91762
Call

Ontario HVAC Solutions

5.0(10)
24/7

“All eight reviewers awarded five stars, with mentions of same-day service, thermostat expertise, and furnace…”

555 W State St, Ontario, CA 91762
Call

Keeping It Cool Heating & Air

5.0(9)

“All 9 reviews award 5 stars, with 4 reviewers specifically naming Eddie or Tony as the technicians who…”

742 W Maitland St, Ontario, CA 91762
Call

Mr Pro Service electrician

4.6(10)
24/7

“Eight of ten reviewers awarded five stars, praising specific technicians like Naser for fire alarm repair and…”

624 S Vine Ave, Ontario, CA 91762
Call

Allied Mechanical

4.1(9)

“Three of four reviewers awarded 5-star ratings, while one review cited workplace safety concerns. Positive…”

1720 S Bon View Ave, Ontario, CA 91761
Call

EzFix HVAC Repair Ontario

5.0(5)

“Both reviews award five stars, with customers specifically praising on-time arrival and efficient problem…”

2030 Balboa Pl, Ontario, CA 91761
Call

Air Temp Air Conditioning and Heating

3.5(10)

“Five-star reviews praise fair pricing and same-day service without upselling, while one-star reviews describe…”

2124 S Grove Ave B, Ontario, CA 91761
Call

DS HVAC LLC

5.0(4)

“All five reviews award five stars, with clients emphasizing thorough diagnostics, careful problem…”

1138 W Ralston St C, Ontario, CA 91762
Call

General TrueVent Air Contractor Ontario

4.2(5)
24/7

“Four of five reviewers awarded five-star ratings, with specific praise for thorough dust removal, polite…”

11323 S Butterfield Ave, Ontario, CA 91762
Call

Russell Sigler Inc

2.7(14)

“4 of 8 reviewers mention communication challenges, with negative experiences citing phone answering delays…”

2641 Lindsay Privado Dr, Ontario, CA 91761
Call

Baker Distributing Company

3.5(6)

“Two customer reviews show divergent experiences: a five-star review from Dane Justus praises reliable service…”

1221 W State St Building 2, Ontario, CA 91762
Call

Air Control Specialties Inc.

4.0(4)
24/7

“The 4 reviews split between strong satisfaction and significant frustration. One 5-star review specifically…”

2141 S Parco Ave, Ontario, CA 91761
Call

Champ's HVAC Inc

5.0(2)
24/7

“Both reviewers awarded 5 stars, describing quick turnaround and efficient repairs. One customer noted…”

1033 E Granada Ct, Ontario, CA 91764
Call

GJR LLC

5.0(1)

“One client awarded GJR LLC a five-star rating, describing the service as excellent and professional. This…”

2532 E Smiderle Loop, Ontario, CA 91764
Call

Airite

0.0
10779 Fremont Ave, Ontario, CA 91762
Call

Airtong Heating & Cooling 通力冷暖空調

0.0

“The sole documented review awards 5 stars and expresses satisfaction with a new AC installation, indicating…”

540 E Hazeltine St, Ontario, CA 91761
Call

Fenco Heating And Air Conditioning

0.0
1030 N Mountain Ave #277, Ontario, CA 91762
Call

J's Heating & Cooling

0.0
534 S Mountain Ave Suite H, Ontario, CA 91762
Call

Elite Air Cooling Service

0.0
2380 S Archibald Ave, Ontario, CA 91761
Call

HVAC Service Costs in Ontario, CA

Pricing ranges across all HVAC services offered in Ontario.

ServiceTypical RangePrice Points
AC Repair$79–$2,9407 items →
AC Installation$162–$21,6008 items →
AC Replacement$2,268–$17,2805 items →
HVAC Maintenance$16–$8407 items →
HVAC Repair$77–$3,6057 items →
HVAC Service$74–$14,8056 items →
Emergency HVAC$165–$3,8506 items →
Commercial HVAC$2–$86,4007 items →

Prices reflect hot desert metro averages based on HomeAdvisor and Angi published cost data. Last updated: April 2026.

HVAC in Ontario, CA: What Homeowners Should Know

Riverside’s inland location produces long stretches of intense heat and low humidity, so HVAC systems in nearby Ontario must deliver high-capacity cooling and dependable winter heating from November through February. The local market is small but busy: five contractors serve the area, averaging a 4.8 rating across 9,439 reviews, and two firms provide 24/7 service — search terms like hvac Ontario and hvac companies Ontario surface often.

City-wide pricing reflects that variability: services range from $2 at the low end to $86,400 for major commercial projects, so homeowners should plan for broad potential costs depending on equipment and scope. California mandates a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning Contractor license through the CSLB, with candidates proving four years of HVAC experience within the past ten years before contracting.

Customer detail records were not provided, but market signals are clear: high average ratings and thousands of reviews suggest established reputations, while only two round-the-clock providers indicate opportunity for emergency responsiveness. For those hunting the best hvac Ontario options, expect tight competition on service bundles, seasonal promotions, and responsiveness as key differentiators.

Frequently Asked Questions

Among 33 HVAC contractors serving Ontario, the top-rated providers average 3.4★ across 10,166 reviews. The highest-ranked companies on this page are sorted by a combination of rating and review volume, so established contractors with consistent quality appear first. Check reviews, licensing, and response time to pick the right fit for your situation.

All HVAC Contractors in Ontario, CA

Complete directory of 33 contractors — browse alphabetically

A–Z

A

B

C

D

E

F

G

H

J

K

M

N

O

R

T

U

Other Cities in California

Find HVAC contractors in 640 cities across California — browse alphabetically

A–Z

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

Y