KINGERSONS - Your Islip Browse through discounted sale on for gas furnace replacement company ac and heat pump repair, installations and repairs. Manuals and submittals sheets on central heat & air units we sell at split heat and air (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