Industrial Maintenance Technician Practice Test

When a resident reports that the furnace blower is running but not producing enough heat, there are several potential causes that can lead to this issue. The scenario suggests a range of possible problems, making it essential to consider multiple factors.

A faulty thermostat can definitely be a reason for inadequate heating. If the thermostat is malfunctioning, it may not be signaling the furnace to produce heat effectively, leading to the blower running without producing the desired warmth.

A dirty air filter is another common issue that can impede airflow and reduce the efficiency of the heating system. If the air filter is clogged with dust and debris, it can restrict the flow of warm air throughout the home, causing the blower to work harder for less effective heating.

Similarly, an insufficient gas supply can cause poor furnace performance. If the gas levels are not adequate, the furnace may struggle to ignite or maintain enough heat output, leading the blower to operate without sufficient heating.

Considering the interconnected nature of these potential issues, if a resident is experiencing insufficient heat from a working blower, it is plausible that any or all of these problems could be contributing factors. Thus, recognizing the possibility of multiple causes highlights the complexity of HVAC systems, making the correct answer encompass all of these concerns.