Alternative to installing ductless minisplit

I’m adding on 2 kids bedrooms in an addition. One room is about 108 sqft and the other is 126 sqft. I have central air (natural gas) and electric AC… I’m adding on 2 kids bedrooms in an addition. One room is about 108 sqft and the other is 126 sqft. I have central air (natural gas) and electric AC…Read MoreGreenBuildingAdvisor