Carr, 20, has 19 points (3+16) across 22 games with the Huskies, for 12th in defensive scoring.
The six-foot blueline has played five seasons in the QMJHL thus far, scoring 78 points (15+63) across 178 games between the Huskies and formerly the Halifax Mooseheads.
Carr is the third QMJHLer to be committed to UNH, joining Voltigeurs forwards Justin Allecia and Sam Oliver.