KINGERSONS - Your Vassalboro Explore our deals on for hvac technician certification ac repairs, maintainence and installations. Manuals and submittals sheets on central heat & air units we sell at split heat and air units (ductless type) delivered straight to your doorstep. Typical delivery time from distribution warehouse is 1-5 business days depending upon products ordered, quantity and location of the shipping address. window air and heating units