Over 670,000 central air conditioners and air-source heat pumps shipped in April.

ARLINGTON, Va. - Combined U.S. factory shipments of 678,833 central air conditioners and air-source heat pumps for April were down 11 percent, compared to the same month last year, according to the Air-Conditioning and Refrigeration Institute.

Heat pump shipments of 168,804 also dropped 3 percent compared to April 2004. Total shipments of 2,346,353 for the first four months of the year are even with those from last year.

Factory stocks for April 2005 were up 103,270 units from March 2005 and up 25,744 units from April 2004. Distributor inventories for April 2005 were up 13,517 units from March 2005 and up 83,242 units from April 2004. Distributor shipments for April were down 10 percent for the same month last year.