Are ductless heat pumps efficient?

Are ductless heat pumps efficient?
Yes, ductless heat pumps can reduce heating costs up to 50%. It is important to
remember that while your overall heating cost will be lower, your electricity bill will
increase.
Three key factors account for the high efficiency of a ductless heat pump:
1. During the heating season, heat pumps move heat from the cool outdoors into
your warm house and during the cooling season, heat pumps move heat from your
cool house into the warm outdoors. Because they move heat rather than generate
heat, heat pumps can provide up to four times the amount of energy they consume.
2. Heat pumps use inverter-driven, variable-speed compressors that allow the
system to maintain constant indoor temperatures by running continuously at higher
or lower speeds. Thus, the system can ramp-up or down without great losses in
operating efficiency, avoiding the energy-intensive on/off cycling common in electric
resistance, baseboard hot water, and forced air systems.
3. Ductless heat pumps also dehumidify better than standard central air
conditioners, resulting in less energy usage and more cooling comfort in summer
months.