Carle's younger brother David attended Shattuck-Saint Mary's and was initially planning on attending the University of Denver to play college ice hockey like his older brother Matt, before later being diagnosed with hypertrophic cardiomyopathy, a condition that has been cited in the sudden death of young athletes. Despite David Carle's decision to no longer play hockey, the Tampa Bay Lightning drafted him in the seventh round of the 2008 NHL Entry Draft. Today, David Carle is the head hockey coach at the University of Denver.