How Many Rooms Can a Ductless AC Cool?

After a day of working or playing in the hot summer sun, coming home to an air-conditioned home can be a welcome treat. Choosing the right type of air-conditioner to cool all your rooms can mean the difference between an uncomfortable interior and one that all the members of your family can enjoy no matter which room they stay in.

Traditional Choices

When you’re deciding on air-conditioning for your abode, you may think that you only have three traditional choices:

  • Window Units. These types of air-conditioners are generally affordable and easy to install. All you need to do is place them in a window and provide appropriate support. However, such units can only cool one room because there’s no way to move the air to a separate room, especially when the doors are closed.

  • Portable Units. You can easily move portable AC units to any room that demands cooling by removing the window vent and drainage tube, and then rolling the unit to a new location. They take up floor space and have the same disadvantage as window units: they only cool one room at a time.

  • Central Air. Also known as HVAC (Heating, Ventilation and Air Conditioning), these units can cool an entire home. However, they are expensive and require expensive ductwork and venting to every room that you want to be cooled. A home without existing ductwork will require time-consuming and costly remodeling to accommodate an HVAC unit. In addition, you cannot individually adjust the temperature in each room. Some rooms may be too cold and others, too hot.

Ductless Air-Conditioning

Mini-split or ductless air-conditioning consists of a compressor that sits outside the home and inverter boxes that connect to the compressor and are mounted inside the room on the wall, at the ceiling, or on the floor. One of our systems can cool up to five rooms with one compressor handling up to five internal boxes.

Ductless air-conditioners have numerous advantages:

  • They do not require expensive ductwork or venting. They look stylish and sleek wherever they are mounted.

  • Each inverter box can handle both heating and cooling, which avoids the expense of units devoted only to heating or cooling.

  • You can manage the temperature at each inverter box either through controls on the box or, more conveniently, through a remote. Each box will have its own remote.

  • They can be easily and professionally installed in almost any room in your home. They require only a three-inch hole through the wall and some wiring. This avoids remodeling. You can start with one or two boxes now and increase their number as your cooling needs change.

  • They save you money overall because you can adjust cooling individually or turn it off completely in unoccupied rooms. This saves energy and lowers your electric bills. Our Energy Savings Calculator can help determine expected savings.


A ductless air-conditioner sound can be the best choice for your heating and cooling needs. If you want to find out more, then please take advantage of our HVAC Load Calculator and contact us for a consultation. We’ll be happy to go over all your options and recommend the best system for your residence.