Cost to Run a 1,500-watt ductless mini split for 2 hours in Washington
Running a 1,500-watt ductless mini split for 2 hours uses 3 kWh and costs $0.345 at $0.115/kWh in Washington. Do that every day and it adds up to $10.35 a month.
Calculate your own cost
- Per hour
- $0.1731.5 kWh
- Per day
- $0.3453 kWh
- Per week
- $2.4221 kWh
- Per month (30 days)
- $10.3590 kWh
- Per year
- $125.931,095 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 1,500-watt ductless mini split cost per hour?
At $0.115/kWh, it costs $0.173 per hour. The maths: 1,500 W ÷ 1,000 = 1.5 kWh per hour, × $0.115 = $0.173.
How much does it cost per month?
Used 2 hours a day for 30 days, it costs about $10.35 per month and uses 90 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
3 kWh per day, 90 kWh per month and 1,095 kWh per year at 2 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.
How can I lower the cost?
Clean indoor filters and set a steady temperature instead of frequent large changes. Check your bill for the exact rate and enter it above.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $9.00 and at 30¢ it is $27.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in Washington
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 1.5 kWh | $0.173 | $5.18 | $62.96 |
| 2 hours | 3 kWh | $0.345 | $10.35 | $125.93 |
| 3 hours | 4.5 kWh | $0.518 | $15.53 | $188.89 |
| 4 hours | 6 kWh | $0.69 | $20.70 | $251.85 |
| 5 hours | 7.5 kWh | $0.863 | $25.88 | $314.81 |
| 6 hours | 9 kWh | $1.04 | $31.05 | $377.78 |
| 7 hours | 10.5 kWh | $1.21 | $36.23 | $440.74 |
| 8 hours | 12 kWh | $1.38 | $41.40 | $503.70 |
| 9 hours | 13.5 kWh | $1.55 | $46.58 | $566.66 |
| 10 hours | 15 kWh | $1.73 | $51.75 | $629.63 |
| 11 hours | 16.5 kWh | $1.90 | $56.93 | $692.59 |
| 12 hours | 18 kWh | $2.07 | $62.10 | $755.55 |
| 13 hours | 19.5 kWh | $2.24 | $67.28 | $818.51 |
| 14 hours | 21 kWh | $2.42 | $72.45 | $881.48 |
| 15 hours | 22.5 kWh | $2.59 | $77.63 | $944.44 |
| 16 hours | 24 kWh | $2.76 | $82.80 | $1,007.40 |
| 17 hours | 25.5 kWh | $2.93 | $87.98 | $1,070.36 |
| 18 hours | 27 kWh | $3.11 | $93.15 | $1,133.33 |
| 19 hours | 28.5 kWh | $3.28 | $98.33 | $1,196.29 |
| 20 hours | 30 kWh | $3.45 | $103.50 | $1,259.25 |
| 21 hours | 31.5 kWh | $3.62 | $108.68 | $1,322.21 |
| 22 hours | 33 kWh | $3.80 | $113.85 | $1,385.18 |
| 23 hours | 34.5 kWh | $3.97 | $119.03 | $1,448.14 |
| 24 hours | 36 kWh | $4.14 | $124.20 | $1,511.10 |
How we worked it out
- Energy per hour: 1,500 W ÷ 1,000 = 1.5 kWh
- Cost per hour: 1.5 kWh × $0.115 = $0.173
- Cost per day: × 2 hours = $0.345
- Month and year: × 30 days = $10.35, × 365 days = $125.93
Washington electricity prices
Washington pays about $0.115 per kWh, which is 34% lower than the US average of $0.175. The same ductless mini split would cost $15.75 a month at the national average.
What it costs in different places
Same 1,500-watt ductless mini split, 2 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $15.75 |
| California | $0.32 | $28.80 |
| Texas | $0.155 | $13.95 |
| New York | $0.25 | $22.50 |
| Florida | $0.155 | $13.95 |
| Illinois | $0.17 | $15.30 |
| Pennsylvania | $0.18 | $16.20 |
| Ohio | $0.17 | $15.30 |
| Washington | $0.115 | $10.35 |
About ductless mini split running costs
Mini-split power varies widely with capacity, efficiency and outdoor conditions. Rated input watts or the energy label gives a better estimate than cooling BTUs alone.
Typical sizes: 700 W, 1,000 W, 1,500 W, 2,500 W.
How to spend less: Clean indoor filters and set a steady temperature instead of frequent large changes.
What this estimate assumes
- The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
- Wattage is the typical label value, not a measured value. Check the label on your own appliance.
- The rate is an approximate residential average in Washington. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
- A month is 30 days and a year is 365 days.