KINGERSONS - Your Niagara Browse through cyber deals on for commercial hvac technician heat and air furnace repair, maintenance and installations. Manuals and submittals sheets on central air and heating units we sell at split ac system (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 heating and air conditioning units