66/100CR Score
Ranked #1 because of its Google rating and review volume: 4.8★ from 7,425 Google reviews.
- 4.8★ from 7,425 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5001 Ontario Mills Pkwy, Ontario, CA 91764
Emergency HVAC Contractors in Norco, CA (2026)
Top 50 of 1,114 HVAC contractors, in emergency orderUpdated 0 paid placements in this rankingHow we rank
25 of the 50 HVAC contractors on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.
If you smell gas, leave the building now and call your gas utility or 911 from outside.
The short answer
- 1
#1 for emergency heating and cooling in Norco: All Pro Cooling, Heating, Plumbing & Electrical, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
Top emergency HVAC contractors in Norco at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | All Pro Cooling, Heating, Plumbing & Electrical | 66 | 4.8★ (7,425) | Ontario, 10 mi away | 24/7 |
| 2 | All Pro Cooling, Heating, Plumbing & Electrical | 65 | 4.7★ (4,107) | Corona, 6 mi away | 24/7 |
| 3 | Friends & Family HVAC | 65 | 4.9★ (1,213) | Corona, 4 mi away | 24/7 |
| 4 | RighTime Home Services | 65 | 4.7★ (3,741) | Corona, 8 mi away | 24/7 |
| 5 | Airplus of California Inc. | 65 | 4.9★ (1,325) | Corona, 6 mi away | 24/7 |
| 6 | MSP HEATING AND AIR CONDITIONING | 64 | 5.0★ (1,203) | Jurupa Valley, 10 mi away | 24/7 |
| 7 | Aced It Heating & AC Repair | 63 | 5.0★ (306) | Corona, 4 mi away | 24/7 |
| 8 | Plus Air Duct Testing | 63 | 5.0★ (401) | Jurupa Valley, 6 mi away | 24/7 |
| 9 | Metz Air Control | 63 | 4.9★ (969) | Chino, 10 mi away | 24/7 |
| 10 | Absolute Airflow Air Conditioning, Heating and Plumbing | 63 | 4.8★ (571) | Riverside, 6 mi away | 24/7 |
Call an emergency HVAC contractor in Norco now
24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.
- #1Call (909) 375-1244
#1All Pro Cooling, Heating, Plumbing & Electrical
Open 24/7 · 4.8 from 7,425 Google reviews
- #2Call (951) 875-6727
#2All Pro Cooling, Heating, Plumbing & Electrical
Open 24/7 · 4.7 from 4,107 Google reviews
- #3Call (866) 482-2326
Open 24/7 · 4.9 from 1,213 Google reviews
- #4Call (951) 465-3055
Open 24/7 · 4.7 from 3,741 Google reviews
- #5Call (951) 739-9501
Open 24/7 · 4.9 from 1,325 Google reviews
- #6Call (951) 621-0919
#6MSP HEATING AND AIR CONDITIONING
Open 24/7 · 5.0 from 1,203 Google reviews
- #7Call (951) 470-2857
Open 24/7 · 5.0 from 306 Google reviews
- #8Call (877) 200-7587
Open 24/7 · 5.0 from 401 Google reviews
The 50 emergency HVAC contractors in Norco, ranked
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 1,114 is on the HVAC contractors page.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Corona, 6 mi away
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 4,107 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 4,107 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1240 Graphite Dr, Corona, CA 92881
Based in Corona, 4 mi away
65/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 1,213 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,213 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1611 Pomona Rd Suite 240, Corona, CA 92878
Based in Corona, 8 mi away
65/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 3,741 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 3,741 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3959 Temescal Canyon Rd, Corona, CA 92883
Based in Corona, 6 mi away
65/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 1,325 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,325 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3050 Palisades Dr, Corona, CA 92878
Based in Jurupa Valley, 10 mi away
64/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 1,203 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 1,203 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2932 Rubidoux Blvd Suite B, Jurupa Valley, CA 92509
Based in Corona, 4 mi away
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 306 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 306 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1307 W 6th St Suite 225 D, Corona, CA 92882
Based in Jurupa Valley, 6 mi away
63/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 401 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 401 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9346 Galena St Ste. C, Jurupa Valley, CA 92509
Based in Chino, 10 mi away
63/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 969 Google reviews, listed on Google as “Air conditioning repair service”.
- 4.9★ from 969 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 13784 Monte Vista Ave, Chino, CA 91710
Based in Riverside, 6 mi away
63/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 571 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 571 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6611 Arlington Ave, Riverside, CA 92504
Based in Corona, 5 mi away
63/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 304 Google reviews, listed on Google as “Air conditioning contractor”.
- 5.0★ from 304 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1697 Laurel Canyon Way, Corona, CA 92881
Based in Riverside, 10 mi away
63/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 1,176 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 1,176 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5324 Mission Blvd #3, Riverside, CA 92509
Based in Riverside, 6 mi away
63/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 270 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 270 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9820 Indiana Ave #23, Riverside, CA 92503
Based in Fontana, 9 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 708 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 708 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 10820 Mulberry Ave, Fontana, CA 92337
Based in Upland, 14 mi away
62/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 1,292 Google reviews, listed on Google as “Air conditioning contractor”.
- 4.9★ from 1,292 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 665 N Central Ave, Upland, CA 91786
Based in Corona, 5 mi away
62/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 316 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 316 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1760 California Ave STE 113, Corona, CA 92881
#17 Home Comfort USA
Based in Anaheim, 17 mi away
62/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 2,813 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 2,813 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1120 N Tustin Ave, Anaheim, CA 92807
Based in Anaheim, 15 mi away
62/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.7★ from 2,250 Google reviews, listed on Google as “HVAC contractor”.
- 4.7★ from 2,250 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5472 E La Palma Ave, Anaheim, CA 92807
Based in Montclair, 14 mi away
62/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 977 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 977 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5623 E Arrow Hwy, Montclair, CA 91763
Based in Corona, 4 mi away
62/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.8★ from 219 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 219 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 236 N Maple St, Corona, CA 92878
Based in Corona, 7 mi away
62/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 236 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 236 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1721 Boyd Ave, Corona, CA 92881
Based in Corona, 5 mi away
62/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “HVAC contractor”.
- 5.0★ from 151 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 310 S Maple St Unit F, Corona, CA 92878
Based in Riverside, 15 mi away
62/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 1,073 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 1,073 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6236 River Crest Dr a, Riverside, CA 92507
Based in Corona, 10 mi away
62/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.8★ from 504 Google reviews, listed on Google as “HVAC contractor”.
- 4.8★ from 504 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9064 Pulsar Ct STE J, Corona, CA 92883
Based in Corona, 4 mi away
62/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 130 Google reviews, listed on Google as “HVAC contractor”.
- 4.9★ from 130 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 N Lincoln Ave, Corona, CA 92882
Top 50 of 1,114 HVAC contractors by emergency score
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
How we ranked emergency HVAC contractors in Norco
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from |
|---|---|---|
| Reputation | 15% | Google star rating, adjusted for how many reviews back it |
| Credentials | 15% | Active state license, bond and workers’ comp on file |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list |
| Recency | 5% | Share of reviews from the last 12 months |
| Availability | 15% | Weekly open hours, Saturday, Sunday, 24/7 or same-day |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) |
| Proximity | 5% | Based in the city scores highest, less the farther away it is |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are |
Emergency HVAC contractors in Norco: questions
Which HVAC contractors in Norco are open 24/7?
25 on this list post 24/7 hours, including All Pro Cooling, Heating, Plumbing & Electrical, All Pro Cooling, Heating, Plumbing & Electrical, Friends & Family HVAC, RighTime Home Services and Airplus of California Inc..
Who is ranked #1 for emergency heating and cooling in Norco, CA?
All Pro Cooling, Heating, Plumbing & Electrical is #1, with a CR Score of 66 out of 100 on emergency weights.
How are emergency HVAC contractors in Norco ranked?
Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 HVAC contractors are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.
What should I do before the HVAC contractor arrives?
If you smell gas, leave the building now and call your gas utility or 911 from outside.
How many emergency HVAC contractors here list a phone number?
25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.
Update log for Norco
- October 2026: CR Scores recalculated for 1,114 hvac contractors serving Norco.
- October 2026: 12 duplicate listings merged.