3 Main Uses for Mini-Split Systems

Mini split in room near ceiling

Top Reasons to Use a Mini-Split System in the Home

Recently, Emerson conducted a survey of homeowners who have purchased a mini-split system within the past 1-5 years. The respondents represented a large sample of people across the U.S. in different climate zones, which provided a good understanding of how mini-splits are being applied throughout the country. After reviewing the data, we found three main reasons that people opt for a mini-split.


No Existing Ductwork:

Mini-splits have recently become an alternative to window AC units for homes where ductwork is not present. They are quieter and more efficient than most window units are. However, they come at an additional cost. As the graph below depicts, for those respondents without a central air conditioning system (~16%), they are primarily looking at mini-splits to avoid installing ductwork (40%) or to provide spot cooling to a room without central AC (52%).


Respondents with central AC and existing ductwork were using mini-splits for a renovated room (35%) and/or for a room add-on (30%). And 37% of those with ductwork and central AC stated they purchased a mini-split to avoid adding ductwork in the renovated space or room add-on. In the past, it was common for people to use through the wall packaged or window units. In any case, the “spot cooling” option allows the homeowner to avoid adding additional ductwork and potential central unit replacement to cover the increased load. When adding on additional rooms, mini-splits can provide a good alternative to package and window units or additions to an existing central air system.

Addressing Problems:

In the survey, 84% of people had existing ductwork with a working central AC unit, which was surprising. However, of those 84%, 39% purchased the mini-split to augment their existing central system by addressing a poorly heated or cooled room in the house. As with add-on rooms, these issues were addressed with package and window units in the past. Digging further, we also found that the top three rooms where mini-splits are applied are the master bedroom, living room/den, and a child’s room. This makes sense as many bedrooms tend to be at the end of a long run of ductwork that may not get enough airflow to properly heat or cool the room, or if a system has not been properly sized or zoned.

However, while mini-splits may address poor heating or cooling in specific areas, they are simply treating the symptoms of an underlying issue. To address the issue, homeowners may consider properly sizing a newly installed system down the road. In the meantime, some duct zoning solutions could potentially solve the problem when a system is replaced at the end of its useful life. We’ll have more on this topic in a future article.

As always, please review your specific needs with your contractor to understand your best options to address your particular heating and cooling needs.

To download the infographic in PDF, please click here.


Was this helpful?

Vote This Post Up 6,201Loading...

21 thoughts on “3 Main Uses for Mini-Split Systems

  1. I have a question, Can you mismatch mini split products? I have a TuttoKool system. Cheap Chinese. The Main PCB lost programming after 3 months. Cant get them to respond to anything. If I buy another indoor unit, can I connect it to my Heat Pump?

  2. My neighbor had a mini-split installed for a recently finished 3rd-floor attic and it seems to keep the room comfortable.

  3. Hey if it’s well insulated a mini split will 100% do the job a 12k btu single zone unit will cool that garage down in 15 minutes . Goodluck !

  4. I live in Texas which is very HOT and plan to use a Mini Split system for my workshop which is on the 2nd story of my 3 car garage. My workshop is 35ft long and 12ft wide so I have some concerns if a mini split will cool it off since I can not put it in the middle of 35 ft length but have to put it at the end. Do you think a single mini split will do it or do I need to get a 2 zone version so I can put the a air unit at each side of the 35 ft length.

Let us know your thoughts

Your email address will not be published. Required fields are marked *