The 38MHRBC air conditioner lives up to our ComfortTM series name, quickly getting up to speed to provide responsive relief to summer’s heat. The highest efficiency model in this series, it’s the ideal solution for affordable, space-saving comfort. Properly matched with a Carrier high wall indoor unit, the 38MHRBC can make all the difference in a room addition, converted space, or anywhere your ducted system leaves you less than comfortable.