What is best said about HVAC and R or better known as Heating, Ventilation, Air Conditioning and Refrigeration are these systems are able to move heat from one space to another. Our senses say we are putting in cold and not removing heat, but the reality is the very very cold refrigerant on the HVAC or the Refrigeration coil is absorbing the what heat their is in the room or space!
Heat is carried away and discharged or as refrigeration tech or instructors would say 'heat is rejected' at the condenser usually located outside.
Little Smokey's Bookshop has books on HVAC and HVAC/R and Chillers and Refrigeration. We have books dealing with refrigerants to cooling towers. We also, have great all purpose HVAC books too!