How is a home's HVAC system typically evaluated?

Evaluating a home's HVAC system involves a comprehensive assessment that includes checking its functionality and age. This process helps determine if the system is operating efficiently and whether it is nearing the end of its useful life. Functionality checks can include examining components such as the furnace, air conditioning unit, ductwork, and any other parts of the HVAC system to ensure they are working correctly. Additionally, knowing the age of the system can inform the inspector whether replacement might be necessary soon, as older systems may require more repairs and may not perform as efficiently as newer models.

In contrast, focusing solely on the color of the vents provides no meaningful information regarding the performance or condition of the HVAC system. Examining only the thermostat offers a limited view, as it doesn't account for the operational status of other crucial components. Measuring temperature outputs can be helpful; however, it does not provide a complete evaluation of the entire system, particularly regarding components that may be failing or due for replacement. Thus, assessing both functionality and age is vital for a thorough evaluation of the HVAC system's overall health.