If you are getting a ductless system installed throughout your property, it doesn’t mean you will need an air handler in every room. The specifics will depend on the system you choose and your unique property layout. Mitsubishi ductless mini splits can provide temperature control for up to 4 rooms per condenser unit. If you have many rooms that need climate control, Green can help. We offer ductless mini split installations in Philadelphia for homes and businesses of all sizes. .