AHRI recently released the July 2013 data on U.S. shipments of heating and cooling equipment. For July 2013, warm air furnaces are up 16.9%, driven by gas furnaces. Oil furnace shipments are down for this time period. Y-T-D warm air furnaces are up 22.3%. Air conditioning and heat pump shipments were also up for July at 15.2% combined. Y-T-D these units are up 10.6% driven by a 24.3% increase in heat pump shipments. Click here for the full report: AHRI Shipment Data.