KINGERSONS - Your Manassas Flash through online deals on for hvac technician certification heat and air furnace repair, maintenance and installations. Manuals and submittals sheets on central ac and heat pump we sell at split heating and air conditioning 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 conditioner heat pump