Founded in 1971, Custom Coil is a supplier of copper tube and aluminum fin heat exchangers. It also manufactures aftermarket and specialty air conditioning systems. Additionally, the company provides a range of parts for air conditioning and refrigeration equipment. Custom Coil offers products for passenger buses and various heavy-duty truck applications. It provides replacement coils for original equipment manufacturer models. The company is located in Jacksonville, Texas, and is a subsidiary of Anvil Corporation. Custom Coil has a more than 15,000-square-foot manufacturing facility.