SUB ZERO AIRHVAC contractor in Key Largo, FL
SUB ZERO AIR is an HVAC contractor at 101425 Overseas Hwy Ste 300, Key Largo, FL 33037, ranked #1 of 16 HVAC contractors in Key Largo and rated 5.0 from 177 Google reviews. Open 24 hours a day, 7 days a week.
Key Largo, FLUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 101425 Overseas Hwy Ste 300, Key Largo, FL 33037Get directions |
|---|---|
| Phone | (305) 852-2100 |
| Website | sub-zero-air.com |
| Hours | Open 24 hours, 7 days a week |
| Google rating | 5.0 from 177 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- HVACmain tradeGoogle main category
Service area
Serves Key Largo and 3 towns within 25 miles: Islamorada, Florida City and Homestead.
Based in Key Largo, FLView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| Thursday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
| Sunday | Open 24 hours |
- Open 24/7
- Open evenings — no
- Open Saturdays
- Open Sundays
- Emergency service
Typical heating and cooling prices
| Job | Low | Typical | High |
|---|---|---|---|
| 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
| Business | Rank | CR Score | Google rating | License verified | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|---|
| SUB ZERO AIR (this business) | — | 94 | 5.0 (177) | — | Yes | Yes | |
| Irwin's Air | #2 | 92 | 5.0 (412) | — | Yes | Yes | 1.9 mi |
| Air Conditioning On Call | #3 | 91 | 4.9 (54) | — | Yes | Yes | 1.5 mi |
Questions about SUB ZERO AIR
How is SUB ZERO AIR ranked in Key Largo?
SUB ZERO AIR is ranked #1 of 16 HVAC contractors in Key Largo by CR Score, with 94 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity and profile completeness. No business can pay to change its rank.
What are SUB ZERO AIR’s hours?
SUB ZERO AIR is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.
What areas does SUB ZERO AIR serve?
Serves Key Largo and 3 towns within 25 miles: Islamorada, Florida City and Homestead. 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 SUB ZERO AIR?
SUB ZERO AIR has a rating of 5.0 from 177 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 SUB ZERO AIR?
Call SUB ZERO AIR on (305) 852-2100. The business is at 101425 Overseas Hwy Ste 300, Key Largo, FL 33037. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
Own SUB ZERO AIR? Claim this profile.
Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.