A Trane Comfort Coil is the other, less visible half of your air conditioning system, and is located inside your home in the indoor unit. It’s a tubing coil in which a volatile liquid evaporates and absorbs heat. This is where the refrigerant evaporates as it absorbs heat from the indoor air that passes over the coil. It serves as a “heat exchanger,” moving heat into your home in the winter and away from your home in the summer.
Be sure to check your filter!