Is a mini-split cheaper to run than baseboard heating?

Yes. A mini-split is a heat pump, so it delivers several units of heat per unit of electricity while baseboard delivers one.

At the default usage on each page, electric baseboard heater costs about 1.9× as much to run as ductless mini-split — $703 against $361 a year.

Why ductless mini-split wins, and when it does not

• Both give you room-by-room control, so the comparison is purely about efficiency, and the heat pump wins outright.
• A mini-split's inverter compressor modulates rather than cycling, so it spends most of its time drawing well below its rating.
• It also cools in summer, which baseboard cannot do at any price.

What the difference is worth where you live

The 1.9× above holds at any price: both a ductless mini-split and an electric baseboard heater scale with whatever you pay per kilowatt-hour. The money does not. Choosing ductless mini-split over electric baseboard heater saves about $341 a year at the U.S. average, and $981 a year in Hawaii at 52.72¢ — against $244 in Nevada, the cheapest jurisdiction in the country. Swapping electric baseboard heater for ductless mini-split is worth 4.0× as much in Hawaii as in Nevada, so what you pay per kilowatt-hour decides this more than the wattage on either label.

Both figures use each appliance’s typical wattage and default usage at the U.S. average of 18.34¢ per kilowatt-hour, and exclude fixed charges, taxes and time-of-use rates. Change the wattage, usage or state on either appliance’s own page to compare them on your terms, or read how to check a running-cost figure before trusting any of them.