Before revision: A run around coil installation, serving air handling units on the roof of an office building A Run around coil , also known as a Run around loop, is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, in order to recover the heat energy .
After revision: A run around coil installation, serving air handling units on the roof of an office building A Run around coil most often is a type of energy recovery heat exchanger positioned within the supply and exhaust air streams of an air handling system, or in the exhaust gases of an industrial process, in order to recover the heat energy .