subject: Cool and Comfortable homes with Air Conditioning [print this page] On the other hand, you can also consider using ductless air conditioning units in your home. As they do not require ducts, the need for tearing up your walls is completely eliminated. Ductless air conditioning units also saves up on energy consumption, which adds up to another advantage of installing them. When using air conditioning units in Oregon, you should not forget to carry out routine maintenance as it helps to keep the equipment running smoothly and efficiently for years to come.