What is the typical maximum total pressure loss for most residential AC and electric heating systems?

The typical maximum total pressure loss for most residential air conditioning and electric heating systems is generally accepted to fall within the range of 0.40 to 0.50 inches of water column (WC). This range is identified based on the operational efficiencies and design parameters of residential HVAC systems.

In residential settings, maintaining an optimal pressure loss is crucial for ensuring that the system functions effectively. Too high a pressure loss can result in decreased airflow and efficiency, leading to longer run times and higher energy costs. Therefore, systems are designed with pressure loss limits that allow for adequate airflow within the specified range, ensuring comfort and efficiency in heating and cooling.

The ranges listed in other options are typically too low or too high for the average residential system. A pressure loss outside of the 0.40 to 0.50 WC range could result in performance issues, thus the chosen interval provides a balance between effective air movement and energy efficiency.