Apparatus and method for controlling temperature of air flow

An apparatus (10) for controlling a temperature of an air flow (30, 31) exhausted from a heat exchanger (14) includes - a heater coil (42) operatively associated with a heat exchange coil (28) of the heat exchanger (14), the heater coil (42) disposed upstream of an exhaust for the heat exchanger (14); - at least one heat pipe (16) mounted to a heat generating assembly, in particular with said heat generating assembly being selected from the group consisting of an engine, an exhaust for said engine, and a combination thereof; and - a pipe assembly interconnecting the heater coil (42) and the at least one heat pipe (16), the pipe assembly having a first conduit (44) moving fluid from the heater coil (42) to the at least one heat pipe (16), and a second conduit (46) moving vapour from said fluid from the at least one heat pipe (16) to the heater coil (42) without use of a power generating device. A related method is also provided.