Typically, a mini split AC does not use a lot of electricity. Ductless air conditioners can use anywhere from 0.30 to 4+ kWh (kiloWatt-hours) of power per hour. That said, the amount of electricity your ductless mini split air conditioner will use depends on several factors, including:
- Outdoor temperature vs. desired indoor temperature - the greater the difference between the outdoor and desired indoor temperature, the more electricity your mini split AC will use.
- BTU rating (i.e. the size of the unit) - generally, the higher the BTU, the more energy the unit will consume.
- Unit efficiency - the higher the efficiency rating, the less electricity the ductless mini split air conditioner will use.
- Zone size - the larger the area, the more electricity your system will need to cool it.
- Insulation in your home - if your home has good insulation, your mini split AC will require less energy to reach and maintain your desired indoor temperature.
- Usage - the more you use the system, the more energy it will consume.