U.S. Shipments of Airsource Heat Pumps Increase 44.1% in September

U.S. shipments of central air conditioners and air-source heat pumps totaled 539,628 units in September 2014, up 29.7% from 416,179 units shipped in September 2013. U.S. shipments of central air conditioners increased 22.9%, to 348,143 units, up from 283,307 units shipped in September 2013.