In the Pocono IndyCar 500 at Pocono, Carpenter started in 13th place, and finished in the same position after having to make an extra pit stop to replace a tire. At the following race, the Iowa Corn Indy 300 at Iowa, Carpenter started in 10th place. During the race Carpenter battled a loose car in the late stages of the race while running in the top 5. On lap 282 Carpenter made contact with Juan Pablo Montoya in turn 3, causing Montoya to crash out of the race. During an interview with the NBC Sports Network, Montoya called Carpenter a "douchebag". During the caution period Carpenter, Hunter-Reay, Newgarden and Graham Rahal all made pit stops for new tires. On the restart Hunter-Reay and Newgarden passed Kanaan, who had dominated the race up to that point, while Carpenter was able to finish up in fifth position. During the weekend of the ABC Supply Wisconsin 250 at Milwaukee, it was announced that Ed Carpenter Racing was to merge with Sarah Fisher Hartman Racing for the 2015 season, to form CFH Racing. In the race Carpenter started in 7th place and finished in 9th place. At the season-ending MAVTV 500 IndyCar World Championships at Auto Club Speedway, Carpenter nearly crashed on both of his laps in qualifying and therefore started in 14th place. During the race Carpenter's pit speed limiter did not function properly, which resulted in a drive-through penalty for speeding on pit lane. Carpenter recovered to finish in 3rd place behind Chip Ganassi Racing teammates Kanaan and Dixon. Carpenter finished 22nd in the final drivers' championship standings, with 262 points.