Top 50 of 663 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.
#1 for emergency heating and cooling in Aliso Viejo: NexGen HVAC & Plumbing, open 24/7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
| Rank | Business | CR Score | Google rating | Based in | Hours |
|---|---|---|---|---|---|
| 1 | NexGen HVAC & Plumbing | 67 | 4.8★ (3,589) | Laguna Hills, 4 mi away | 24/7 |
| 2 | Triton Air | 66 | 4.9★ (3,766) | San Clemente, 11 mi away | 24/7 |
| 3 | Just Right Services | 65 | 4.9★ (846) | Laguna Hills, 4 mi away | 24/7 |
| 4 | Air Care | 65 | 5.0★ (1,350) | Rancho Santa Margarita, 9 mi away | 24/7 |
| 5 | SoCal Airflow Pros | 64 | 4.9★ (1,005) | Rancho Santa Margarita, 8 mi away | 24/7 |
| 6 | Orange Coast Plumbing | 64 | 5.0★ (490) | Dana Point, 5 mi away | 24/7 |
| 7 | Triton Air & Plumbing | 64 | 4.8★ (1,069) | Lake Forest, 7 mi away | 24/7 |
| 8 | John Stevenson Plumbing, Heating & Air Conditioning | 64 | 4.9★ (680) | Lake Forest, 7 mi away | 24/7 |
| 9 | Dial One Sonshine Heating, Air & Plumbing | 64 | 4.9★ (2,852) | Santa Ana, 16 mi away | 24/7 |
| 10 | JustinTime Plumbing Heating and Air | 64 | 4.9★ (1,328) | Costa Mesa, 12 mi away | 24/7 |
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.
Open 24/7 · 4.8 from 3,589 Google reviews
Open 24/7 · 4.9 from 3,766 Google reviews
Open 24/7 · 4.9 from 846 Google reviews
#4Air Care
Open 24/7 · 5.0 from 1,350 Google reviews
Open 24/7 · 4.9 from 1,005 Google reviews
Open 24/7 · 5.0 from 490 Google reviews
Open 24/7 · 4.8 from 1,069 Google reviews
#8John Stevenson Plumbing, Heating & Air Conditioning
Open 24/7 · 4.9 from 680 Google reviews
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 663 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.
Ranked #1 because of its Google rating and trade focus: 4.8★ from 3,589 Google reviews, listed on Google as “HVAC contractor”.
Based in San Clemente, 11 mi away
Ranked #2 because of its Google rating and trade focus: 4.9★ from 3,766 Google reviews, listed on Google as “HVAC contractor”.
Based in Laguna Hills, 4 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 846 Google reviews, listed on Google as “HVAC contractor”.
Based in Rancho Santa Margarita, 9 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 1,350 Google reviews, listed on Google as “HVAC contractor”.
Based in Rancho Santa Margarita, 8 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 1,005 Google reviews, listed on Google as “HVAC contractor”.
Based in Dana Point, 5 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 490 Google reviews, listed on Google as “HVAC contractor”.
Based in Lake Forest, 7 mi away
Ranked #7 because of its Google rating and trade focus: 4.8★ from 1,069 Google reviews, listed on Google as “HVAC contractor”.
Based in Lake Forest, 7 mi away
Ranked #8 because of its Google rating and trade focus: 4.9★ from 680 Google reviews, listed on Google as “HVAC contractor”.
Based in Santa Ana, 16 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 2,852 Google reviews, listed on Google as “HVAC contractor”.
Based in Costa Mesa, 12 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 1,328 Google reviews, listed on Google as “HVAC contractor”.
Based in Foothill Ranch, 9 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 478 Google reviews, listed on Google as “HVAC contractor”.
Based in Westminster, 21 mi away
Ranked #12 because of its Google rating and review volume: 4.8★ from 4,319 Google reviews.
Based in Aliso Viejo
Ranked #13 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Aliso Viejo
Ranked #14 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “HVAC contractor”.
Based in Irvine, 11 mi away
Ranked #15 because of its Google rating and trade focus: 4.6★ from 967 Google reviews, listed on Google as “Heating contractor”.
Based in Orange, 18 mi away
Ranked #16 because of its Google rating and trade focus: 4.8★ from 1,840 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 21 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 2,813 Google reviews, listed on Google as “HVAC contractor”.
Based in Mission Viejo, 5 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 118 Google reviews, listed on Google as “HVAC contractor”.
Based in Aliso Viejo
Ranked #19 because of its Google rating and trade focus: 5.0★ from 54 Google reviews, listed on Google as “HVAC contractor”.
Based in Lake Forest, 8 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 189 Google reviews, listed on Google as “HVAC contractor”.
Based in Corona, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.7★ from 3,741 Google reviews, listed on Google as “HVAC contractor”.
Based in Corona, 23 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 4,107 Google reviews, listed on Google as “HVAC contractor”.
Based in Irvine, 5 mi away
Ranked #23 because of its Google rating and trade focus: 4.7★ from 212 Google reviews, listed on Google as “HVAC contractor”.
Based in Fountain Valley, 15 mi away
Ranked #24 because of its Google rating and trade focus: 4.9★ from 596 Google reviews, listed on Google as “HVAC contractor”.
Based in Anaheim, 21 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 2,250 Google reviews, listed on Google as “HVAC contractor”.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.
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 |