Residential HVAC Installation Practice Exam 2026 - Free HVAC Practice Questions and Study Guide

Question: 1 / 400

What is the function of the evaporator coil in an HVAC system?

To release heat into the atmosphere

To absorb heat from the indoor air and cool it

The function of the evaporator coil in an HVAC system is to absorb heat from the indoor air, which effectively cools the air that circulates through the system. When the refrigerant inside the evaporator coil evaporates at low pressure, it absorbs heat from the indoor air as it changes from a liquid to a gas. This process cools the air passing over the evaporator coil, allowing the HVAC system to lower the indoor temperature and provide a comfortable environment.

The evaporator coil is a crucial component in the refrigeration cycle, working in conjunction with other components, such as the compressor and condenser, to transfer heat effectively. By enhancing the cooling process, the evaporator coil plays an essential role in maintaining the desired temperature and humidity levels within a residence.

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To filter dust and debris from the air

To compress refrigerant to increase temperature

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