We have a ductless mini split unit in our sunroom, and I love it! The ductless mini split plan keeps our sunroom heated and cooled to the perfect temperature and it makes the area more usable. I didn’t want it to be another household that had a sunroom that sat untouched due to imfamiliar heat and air. Sunrooms are designed to let in a lot of natural sunlight, which means the area tends to be naturally warmer, during the summer time months. The ductless mini system plan keeps our sunroom so comfortable that I keep it running most of the time. Since I spend a lot of time in my apartment and I use the sunroom often, I want it to be comfortable and ready to use. It doesn’t take long for the ductless mini system plan to heat and cool our sunroom, but it’s nice to have it running. What I didn’t expect, however, is that a ductless mini split system would require the same maintenance as our central heating and air conditioning. In order to repair our Heating and Air Conditioning system before winter, the Heating and Air Conditioning professional looked at the ductless mini split plan and said he would look into it. He took off some pieces and pulled out a dirty air filter! I did not have another air filter to upgrade it with, so he asked if I had another. It never occurred to me that ductless mini split units have air filters! He was so kind to look at the ductless mini split unit and warn me about the air filter.