Cheapest heat pumps to run in Delaware
Ranked by estimated yearly cost if each model served the same 36,000 BTU/h (3-ton) load in Delaware, so size doesn't distort the comparison. Because Delaware's climate weights heating more heavily, HSPF2 (heating efficiency) matters most here. Choosing the most efficient model over the least efficient one in our database saves about $892 a year for the same load.
| # | Model | Type | Size | HSPF2 | SEER2 | 5°F kept | 3-ton cost/yr |
|---|---|---|---|---|---|---|---|
| 1 | Fujitsu AOUH09KTAP1 | Mini-split | 1 ton | 14 | 33.5 | 142% | $1,018 |
| 2 | Fujitsu AOUH12KTAP1 | Mini-split | 1 ton | 13.7 | 31.5 | 106% | $1,049 |
| 3 | Fujitsu AOUH15KTAP1 | Mini-split | 1 ton | 13 | 28.7 | 106% | $1,115 |
| 4 | Bryant 37MAHAQ09AA3 | Mini-split | 1 ton | 13.8 | 20.6 | 99% | $1,156 |
| 5 | Bryant 37MARAQ09AA3 | Mini-split | 1 ton | 13.9 | 19.6 | 78% | $1,167 |
| 6 | Bryant 37MARAQ18AA3 | Mini-split | 1.5 tons | 13.5 | 20 | 71% | $1,184 |
| 7 | Senville SENA-24HF-OG | Mini-split | 2 tons | 13.5 | 19 | 83% | $1,202 |
| 8 | Senville SENA-09HF-OG | Mini-split | 1 ton | 12.5 | 21.4 | 96% | $1,230 |
| 9 | Mitsubishi Electric SUZ-AA09NL*** | Mini-split | 1 ton | 12.9 | 17.6 | 53% | $1,270 |
| 10 | Senville SENA/09HF/OQ | Mini-split | 1 ton | 12 | 20.2 | 90% | $1,287 |
| 11 | Bryant 37MAHAQ18AA3 | Mini-split | 1.5 tons | 12.4 | 18 | 90% | $1,297 |
| 12 | Senville SENA-18HF-OG | Mini-split | 1.5 tons | 12.3 | 18 | 90% | $1,304 |
Heat pump vs. gas furnace in Delaware
To heat the same home (1,700 full-load heating hours at 36,000 BTU/h) in Delaware, a typical heat pump (HSPF2 9.5) would cost about $1,205 a year, an efficient one (HSPF2 10) about $1,144, versus $992 for a 95% gas furnace and $1,178 for an older 80% furnace, at Delaware's average residential gas price of $15.97 per thousand cubic feet. In Delaware a new high-efficiency gas furnace is cheaper to run for heating, but an efficient heat pump beats an older 80% furnace by about $34 a year.
Heating only; a heat pump also provides cooling, while a furnace needs a separate air conditioner. Gas prices: EIA, residential, annual average. Compare all states.
Assumptions for Delaware
| Residential electricity price | 18.70¢/kWh (EIA Electric Power Monthly, Aug 2026, preliminary) |
| Climate group | Mixed-humid |
| Equivalent full-load heating hours | 1,700 per year |
| Equivalent full-load cooling hours | 1,000 per year |
Use the calculator on any model page to replace these with your own electricity rate and usage.
Frequently asked questions
How much does it cost to run a heat pump in Delaware?
Using Delaware's average residential electricity price of 18.70¢/kWh, a typical 3-ton, median-efficiency heat pump costs about $1,648 a year to run. The most efficient model in our database would cost about $1,018 for the same load.
Is electricity expensive in Delaware?
Delaware's residential rate of 18.70¢/kWh is 3% above the U.S. average of 18.16¢ and ranks #19 most expensive of 51 (EIA, August 2026).
Is heating or cooling the bigger cost in Delaware?
With our climate assumptions for Delaware (1,700 heating and 1,000 cooling hours), heating accounts for about 73% of a typical heat pump's yearly energy use.
Is a heat pump cheaper than gas heat in Delaware?
For a typical home, heating with an efficient heat pump costs about $1,144 a year versus $992 with a 95% gas furnace at Delaware's average prices. In Delaware a new high-efficiency gas furnace is cheaper to run for heating, but an efficient heat pump beats an older 80% furnace by about $34 a year.