The Astros went 56-106 (.346) in 2011. They had nowhere to go but up in 2012, and they have, slightly (32-51 (.386) through Thursday). They only won 31 homes games in 2011, but have already notched 23 home victories in 2012. However, their performance on the road in 2012 is actually worse than 2011 (when they went 25-56).
Houston has won only 9 of their first 41 games away from home so far this season, for a .220 percentage. This leads to a rather rare home/road split. If they keep this pace up for the entire year, they will be only the fourth team to finish at least .500 at home and .250 or worse on the road. Here are the first three, and where the 2012 Astros stand: