Do ductless mini-splits becomes LESS efficient with age? If the filters are cleaned regularly, does a mini-split lose it’s efficiency with time due to wear and tear?Also, what is a… Do ductless mini-splits becomes LESS efficient with age? If the filters are cleaned regularly, does a mini-split lose it’s efficiency with time due to wear and tear?Also, what is a…Read MoreGreenBuildingAdvisor

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