Rental fleet : As of June 30 , 2009 , we had 1,771 natural gas compressors in our rental fleet totaling 223,041 horsepower , as compared to 1,546 natural gas compressors totaling 188,462 horsepower at June 30 , 2008 . As of June 30 , 2009 , we had 1,345 natural gas compressors rented compared to 1,388 at June 30 , 2008 .