KINGERSONS - Your Twin Flat Browse through discounted sale on for hvac contracting companies repair, duct cleaning, installations and yearly maintenance. Manuals and submittals sheets on central air & heat units we sell at split air conditioner 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 heat unit