The 38MHRBC air conditioner lives up to our Comfort^™ 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.