Florida Home Inspector Practice Test

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What is the primary function of a metering device in a cooling system?

  1. Increase pressure on the coolant

  2. Measure temperature

  3. Reduce pressure on the coolant

  4. Distribute air flow

The correct answer is: Reduce pressure on the coolant

The primary function of a metering device in a cooling system is to reduce pressure on the coolant. This device is essential in controlling the flow of refrigerant into the evaporator coil, facilitating the proper functioning of the cooling cycle. By lowering the pressure of the refrigerant, the metering device allows it to expand and absorb heat from the indoor air as it passes through the evaporator. This process results in effective cooling and helps maintain the desired temperature within the space being conditioned. Understanding the role of the metering device is crucial for home inspectors when evaluating cooling system components. It directly affects the efficiency and performance of the entire system. A malfunctioning metering device can lead to improper refrigerant flow, resulting in decreased cooling capacity and potential system damage.

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