System Sizing

Accurately sizing a heating or cooling system to meet the specific energy demands of a particular home can be done only by following a careful analysis of the home's energy load. This lesson explains how failing to do this assessment reduces the system's efficiency, shortens the life of the equipment, and creates a range of uncomfortable conditions for the home's occupants.

Learning Objectives

At the conclusion of this lesson, you will be able to:

• Identify the problems associated with oversizing HVAC systems
• Explain what short-cycling means and the problems it can cause
• Describe why an energy-load calculation is needed for each installation
• Review the essential measurements used to complete an energy-load calculation

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