KINGERSONS - Your Rock City Falls Search and buy for looking for hvac subcontractors repair, duct cleaning, installations and yearly maintenance. Manuals and submittals sheets on central heat and air systems we sell at split air conditioner systems (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 system