How Much Does It Cost to Run Air Conditioning in Puerto Rico?
Hourly, monthly and yearly cooling costs at Puerto Rico's electricity rate, by system size and SEER rating.
By Mark Curant·Updated
Quick answer
At Puerto Rico's residential electricity rate of USD 0.339/kWh as of October–December 2026, a typical 3-ton air conditioner (SEER 14) costs about $0.87 per hour, $209 for a month at 8 hours a day, and roughly $2,612 a year with year-round cooling (about 3,000 hours). That rate is 1.8 times the U.S. average of 18.31¢/kWh, and ranks #3 of 8 among the Caribbean countries we track.
Per hour
$0.87
3-ton, SEER 14
Per month
$209
8 hrs/day × 30 days
Per year
$2,612
3,000 cooling hours
Your numbers in Puerto Rico
Your AC now (SEER 10)
$3,657/yr
$1.22/hr · $293 summer month
New system (SEER 16)
$2,286/yr
$0.76/hr · $183 summer month
You would save
$1,371/yr
$13,713 over 10 years
Starts from Puerto Rico's average residential rate and typical cooling hours. Want payback on a quote? Open the full calculator with these numbers →
Cost to run AC in Puerto Rico by system size
Central systems and ductless mini-splits are both sized in tons (1 ton = 12,000 Btu). A single bedroom mini-split is usually 0.75–1 ton; a whole house, 2–5 tons. Costs for SEER 14 at 33.86¢/kWh:
| System size | Per hour | Per month (8 hrs/day) | Per year |
|---|---|---|---|
| 1.5 ton (18,000 Btu) | $0.44 | $104 | $1,306 |
| 2 ton (24,000 Btu) | $0.58 | $139 | $1,741 |
| 2.5 ton (30,000 Btu) | $0.73 | $174 | $2,177 |
| 3 ton (36,000 Btu) | $0.87 | $209 | $2,612 |
| 3.5 ton (42,000 Btu) | $1.02 | $244 | $3,047 |
| 4 ton (48,000 Btu) | $1.16 | $279 | $3,483 |
| 5 ton (60,000 Btu) | $1.45 | $348 | $4,353 |
What a more efficient AC saves in Puerto Rico
Annual cost of a 3-ton system at 3,000 cooling hours a year. Many older units on the islands are SEER 10 or lower; modern inverter mini-splits commonly reach SEER 18–25.
| SEER rating | Annual cost | Savings vs. SEER 10 | 10-year savings |
|---|---|---|---|
| SEER 10 | $3,657 | — | — |
| SEER 13 | $2,813 | $844 | $8,439 |
| SEER 14 | $2,612 | $1,045 | $10,448 |
| SEER 16 | $2,286 | $1,371 | $13,713 |
| SEER 18 | $2,032 | $1,625 | $16,253 |
| SEER 20 | $1,828 | $1,828 | $18,284 |
About electricity in Puerto Rico
Power in Puerto Rico is supplied by LUMA Energy. The Energy Bureau resets fuel and purchased-power charges every quarter. The October–December 2026 rate is a record high for residential customers.
Protect the AC you're paying to run
On island grids, outages, brownouts and voltage surges are part of normal life, and each one is a risk to an air conditioner's compressor and control board. A failed compressor can cost as much as a new unit, so a few inexpensive precautions are worth it:
- Voltage protection on every unit. A plug-in or hard-wired voltage protector cuts power when voltage goes too high or too low, then waits before restarting.
- A whole-house surge protector at the panel, installed by an electrician.
- A restart delay after outages. When power comes back, many units try to start at once; a delay of a few minutes protects the compressor.
- Generator sized for the AC. Compressors draw several times their running current at start-up; ask about a soft starter if you run AC on a generator.
How Puerto Rico compares
#1
Bermuda
49.90¢/kWh
#2
Cayman Islands
39.10¢/kWh
#4
Barbados
31.90¢/kWh
#5
Bahamas
31.04¢/kWh
#6
Jamaica
29.10¢/kWh
#7
Dominican Republic
11.40¢/kWh
#8
Trinidad and Tobago
6.20¢/kWh
For comparison, the U.S. average is 18.31¢/kWh (July 2026). See costs in every U.S. state.
Frequently asked questions
How much does it cost to run AC per hour in Puerto Rico?
About $0.87 for a typical 3-ton air conditioner rated SEER 14, at Puerto Rico's residential rate of USD 0.339/kWh (about 33.86¢ US, October–December 2026). A 1.5-ton unit, typical for one or two rooms, costs about $0.44 an hour.
How much does air conditioning cost per month in Puerto Rico?
Running 8 hours a day for 30 days, a 3-ton SEER 14 system uses about 617 kWh, or about $209 ($209) at Puerto Rico's rate.
Is a high-efficiency air conditioner worth it in Puerto Rico?
Usually, yes. Replacing a SEER 10 unit with a SEER 16 saves about $1,371 a year at 3,000 cooling hours, and going from SEER 14 to SEER 20 saves about $784 a year. At island electricity prices, the extra cost of an efficient inverter system often pays back within a few years.
How we calculated this
Power draw (kW) = tons × 12,000 Btu/h ÷ SEER ÷ 1,000. Cost = kW × hours × rate. Rate: Puerto Rico Energy Bureau quarterly adjustment, as reported by El Nuevo Día (Oct. 1, 2026), October–December 2026. Island rates change with fuel prices, often monthly, so check your latest bill: divide the total by the kWh used to get your all-in rate. Cooling hours are our estimate for the climate.
Run your own numbers
The calculator opens with Puerto Rico's rate and typical hours filled in. Add your unit's SEER and size to see your cost and what an upgrade would save.
Calculate for Puerto Rico