15 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank
8 of the 15 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 Islamorada: SUB ZERO AIR, 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 | SUB ZERO AIR | 61 | 5.0★ (177) | Key Largo, 18 mi away | 24/7 |
| 2 | Island Air Control | 60 | 4.9★ (10) | Islamorada | 24/7 |
| 3 | Optimus Home Services | 60 | 4.7★ (33) | Richmond Heights, 8 mi away | 24/7 |
| 4 | Air Conditioning On Call | 58 | 4.9★ (54) | Key Largo, 20 mi away | 24/7 |
| 5 | Air Now | 57 | 5.0★ (18) | Key Largo, 16 mi away | 24/7 |
| 6 | Integrity home services of the keys ...Boat Detailing huricane shutter service | 56 | 5.0★ (38) | Islamorada | 24/7 |
| 7 | Key Largo Air Conditioning & Heating | 56 | 4.7★ (15) | Key Largo, 18 mi away | 24/7 |
| 8 | Upper Keys A/C | 56 | 5.0★ (10) | Key Largo, 18 mi away | 24/7 |
| 9 | Rocket Cooling | 49 | 4.8★ (1,040) | Islamorada | — |
| 10 | Rex Air | 49 | 4.9★ (828) | Islamorada | Sat · Sun · Evenings |
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 · 5.0 from 177 Google reviews
Open 24/7 · 4.9 from 10 Google reviews
Open 24/7 · 4.7 from 33 Google reviews
Open 24/7 · 4.9 from 54 Google reviews
#5Air Now
Open 24/7 · 5.0 from 18 Google reviews
#6Integrity home services of the keys ...Boat Detailing huricane shutter service
Open 24/7 · 5.0 from 38 Google reviews
#7Key Largo Air Conditioning & Heating
Open 24/7 · 4.7 from 15 Google reviews
Open 24/7 · 5.0 from 10 Google reviews
24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights.
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: 5.0★ from 177 Google reviews, listed on Google as “HVAC contractor”.
Based in Islamorada
Ranked #2 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based in Richmond Heights, 8 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 33 Google reviews, listed on Google as “HVAC contractor”.
Based in Key Largo, 20 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 54 Google reviews, listed on Google as “Air conditioning repair service”.
Based in Key Largo, 16 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Air conditioning contractor”.
Based in Islamorada
Ranked #6 because of its Google rating and review volume: 5.0★ from 38 Google reviews.
Based in Key Largo, 18 mi away
Ranked #7 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “HVAC contractor”.
Based in Key Largo, 18 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “HVAC contractor”.
Based in Islamorada
Ranked #9 because of its Google rating and review volume: 4.8★ from 1,040 Google reviews.
Based in Islamorada
Ranked #10 because of its Google rating and trade focus: 4.9★ from 828 Google reviews, listed on Google as “HVAC contractor”.
Based in Islamorada
Ranked #11 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “HVAC contractor”.
Based in Islamorada
Ranked #12 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “HVAC contractor”.
Based in Key Largo, 20 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 412 Google reviews, listed on Google as “HVAC contractor”.
Based in Key Largo, 21 mi away
Ranked #14 because of its Google rating and trade focus: 4.9★ from 46 Google reviews, listed on Google as “HVAC contractor”.
Based in Florida City, 20 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 31 Google reviews, listed on Google as “HVAC contractor”.
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 |