What Is The Difference between Heating Coil And Cooling Coil?

What is the difference between heating coil and cooling coil?

The main differences between a heating coil and a cooling coil in HVAC systems are as follows:

Function: The heating coil is designed to increase the temperature of the air by transferring heat to it, while the cooling coil is for reducing the temperature of the air by extracting heat from it.

Source of energy: For the heating coil, it may be heated by a fluid like hot water or steam, or by electric resistance. The cooling coil typically works in conjunction with a refrigerant to absorb heat.

Temperature effect: The heating coil warms the air, making it hotter, while the cooling coil cools the air, making it colder.

Physical design: They may have different configurations and materials to optimize their respective functions.

For example, a heating coil might be more rugged to handle high temperatures, while a cooling coil is designed to facilitate efficient heat transfer and refrigerant flow.

An example is that in a winter heating mode, the heating coil is activated to warm the incoming air. In summer, the cooling coil takes over to cool the air before it is distributed. The two coils play distinct roles to meet the different temperature control needs of the HVAC system throughout the year.