ICC Commercial Mechanical Practice Exam

Question: 1 / 400

What is a common function of economizers in commercial HVAC systems?

To reduce the size of the HVAC unit

To improve energy efficiency by using external air for cooling

Economizers play a vital role in commercial HVAC systems by enhancing energy efficiency. Their primary function is to utilize external air for cooling, particularly when outdoor conditions are favorable. This process, known as air-side economizing, allows the system to take advantage of cooler outside temperatures to reduce the reliance on mechanical refrigeration.

By bringing in cooler outdoor air, economizers can lower the energy demand of the HVAC system, leading to significant reductions in energy consumption and operating costs. They are designed to monitor indoor and outdoor air conditions and automatically adjust the amount of outside air brought into the system based on those conditions, ensuring optimal performance and efficiency.

This function not only helps in maintaining a comfortable indoor environment but also aligns with sustainability practices by reducing the carbon footprint associated with cooling demands.

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To reduce indoor air quality

To maintain consistent temperature in all weather

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