KINGERSONS - Your Stonewall Gap Browse deals to buy for hvac subcontractor heat and air furnace repair, maintenance and installations. Manuals and submittals sheets on central air and heat units 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 systems