How Much to Run a Mini Split in New Hampshire? $1,646/Winter
Running ductless mini-split in New Hampshire costs about $0.54 an hour and roughly $1,646 for the winter — 2,000 W for 16.9 hours a day at 26.78¢/kWh.
· Source: EIA Electric Power Monthly Table 5.6.A (July 2026 data) · next EIA update ~Oct 23
On this page: CalculatorTableHow we calculatedSources
Jump to calculator ↓Slider nudges the New Hampshire rate; the URL keeps it.
- Per hour
- $0.54 at 26.78¢/kWh
- Per winter
- $1,646 (182 days)
- Hours per day
- 16.9 (NOAA state heating degree-days-scaled)
- Degree-days used
- 6,287 (NOAA CPC state, population-weighted)
- Wattage
- 2,000 W (typical 400–3,500)
- New Hampshire rate
- 26.78¢ (October 2025–March 2026 average)
- Rank of 20 cold states
- 2 (2nd most expensive)
Why this number
New Hampshire runs ductless mini-split longer than the national baseline in October–March — 16.9 hours a day on the NOAA state degree-day scaling used here, against 9.4 nationally — and pays 26.78¢/kWh for it. Those two numbers, times 2,000 W, are the whole $1,646.
Ductless mini-split cost in New Hampshire by hours per day — per day / per winter
| Hours per day | New Hampshire avg 26.78¢ | Public Service Co of N 18.7¢ | Community Power Coalit 8.7¢ | New Hampshire Elec Coo 23.6¢ |
|---|---|---|---|---|
| 1 h | $0.54 / $97 | $0.37 / $68 | $0.17 / $32 | $0.47 / $86 |
| 2 h | $1.07 / $195 | $0.75 / $136 | $0.35 / $63 | $0.94 / $172 |
| 4 h | $2.14 / $390 | $1.50 / $272 | $0.70 / $127 | $1.89 / $344 |
| 6 h | $3.21 / $585 | $2.24 / $408 | $1.04 / $190 | $2.83 / $515 |
| 8 h | $4.28 / $780 | $2.99 / $545 | $1.39 / $253 | $3.78 / $687 |
| 12 h | $6.43 / $1,170 | $4.49 / $817 | $2.09 / $380 | $5.66 / $1,031 |
What New Hampshire’s utilities charge for it
| Utility | Residential customers | ¢/kWh (EIA-861 2024) | Per hour | Per winter at 16.9 h/day |
|---|---|---|---|---|
| Public Service Co of NH | 459,907 | 18.7¢ | $0.37 | $1,149 |
| Community Power Coalition of NH | 104,562 | 8.7¢ | $0.17 | $535 |
| New Hampshire Elec Coop Inc | 74,144 | 23.6¢ | $0.47 | $1,450 |
What the numbers say about ductless mini-split in New Hampshire
New Hampshire logged 6,287 population-weighted heating degree-days over October–March (NOAA CPC state series), 180% of the CONUS figure of 3,500, which is why this page runs ductless mini-split 16.9 hours a day against the national 9.4 — 7.5 hours more. At New Hampshire’s October 2025–March 2026 average rate of 26.78¢/kWh that makes it the 2nd most expensive of the 20 cold states for ductless mini-split: $1,646 for the 182-day winter, against Nebraska’s $552 and Maine’s $1,886. Public Service Co of NH, New Hampshire’s largest utility with 459,907 residential customers, averages 18.7¢ — $1,149 for the same hours — while New Hampshire Elec Coop Inc at 23.6¢ comes to $1,450, a $301 spread on identical use. Per million Btu delivered, this unit at the NEEP median COP of 2.17 costs $36.17 against $20.00 for natural gas at New Hampshire’s winter average of $1.90/therm, which is the whole-house comparison the New Hampshire heating page works through. New Hampshire’s winter-average rate (26.78¢) sits 0.18¢ above its July 2026 reading of 26.6¢; the season figure uses the winter average because that is when ductless mini-split runs.
Frequently asked questions
How much does it cost to run ductless mini-split per hour in New Hampshire?
$0.54 an hour for a 2,000 W unit at New Hampshire’s October 2025–March 2026 average average of 26.78¢/kWh (2,000 ÷ 1,000 × 0.2678); at Public Service Co of NH’s 18.7¢ it is $0.37.
How much does ductless mini-split cost for the whole winter in New Hampshire?
About $1,646: 2,000 W × 16.9 hours a day × 182 days (October–March) × 26.78¢. The hours are the national 9.4 h/day scaled by NOAA CPC state population-weighted HDD, October 2025–March 2026 (6,287 against the CONUS 3,500); enter your own hours above for your own figure.
Is ductless mini-split expensive to run in New Hampshire compared with other cold states?
New Hampshire is the 2nd most expensive of the 20 cold states on this site at $1,646 a winter; the range runs from Nebraska ($552) to Maine ($1,886), driven almost entirely by the electricity rate.
How we calculated this
Worked for ductless mini-split in New Hampshire: 2,000 W ÷ 1,000 × 0.2678 $/kWh = $0.54 per hour; hours per day = 9.4 × (6,287 ÷ 3,500) = 16.9; 2,000 ÷ 1,000 × 16.9 × 182 × 0.2678 = $1,646 for the winter. Rate: EIA Electric Power Monthly 5.6.A (October 2025–March 2026 average); degree-days: NOAA CPC state population-weighted HDD, October 2025–March 2026, against the CONUS total; utility prices: EIA-861 2024.Sources: U.S. Energy Information Administration (EIA) electricity rates · DSIRE incentive records · public IRS/OBBBA guidance. Figures are modeled estimates, not quotes or tax advice. See our methodology.
Where to go next
- Cost to run ductless mini-split (national page) — The 2,000 W and 9.4 h/day baseline this page scales for New Hampshire, with the sourced benchmark.
- Cost to heat a home in New Hampshire — Gas, propane, oil, heat pump and resistance per MMBtu at New Hampshire’s own prices — the whole-house picture.
- Find your electricity rate by ZIP — New Hampshire averages 26.78¢ but its utilities span the table above — send your own rate into this calculator.
- Solar panel cost in New Hampshire — New Hampshire’s 26.6¢ July rate, utilities and rate history on the solar side.
- Cost to run space heater in New Hampshire — Same New Hampshire rates and degree-days applied to a 1,500 W space heater.
- Cost to run heat pump in New Hampshire — Same New Hampshire rates and degree-days applied to a 3,500 W heat pump.
- Cost to run ductless mini-split in Massachusetts — $1,646 for the winter at 30.88¢ and 14.6 h/day — the nearest cold-state comparison.
- Cost to run ductless mini-split in Vermont — $1,557 for the winter at 23.81¢ and 18.0 h/day — the nearest cold-state comparison.