Overheating Furnaces: Why Does This Happen?

A furnace might be overheating if it frequently turns off, emits a burning smell, or fails to adequately heat living spaces.

A furnace might be overheating if it frequently turns off, emits a burning smell, or fails to adequately heat living spaces. This problem will not be resolved without intervention and requires prompt attention to prevent extensive damage to the heating system, potentially shortening its lifespan.

This blog examines the potential causes of an overheating furnace.

Restricted Airflow

Insufficient airflow can cause a furnace's internal components to overheat. This often occurs when the air filter is not changed regularly. Over time, the filter can become clogged with dirt, forcing the system to work much harder, thus reducing its efficiency and performance. Regularly inspecting and replacing the furnace filter is crucial, especially in homes with pets or a large number of occupants.

Excess Dirt

A clogged air filter compromises the furnace's ability to function properly. Consequently, dust and contaminants accumulate on the interior parts, such as the blower motor and heat exchanger. To prevent the furnace from overheating, ensure the system undergoes regular inspection and cleaning by a certified heating services technician.

Mechanical Failure

Overheating can also result from mechanical failure, particularly when components like electrical wiring, the blower motor, and the heat exchanger are under excessive strain. Routine maintenance by an HVAC technician is essential to keep moving parts in optimal condition. During these checks, the technician can identify and recommend the replacement of any parts showing signs of premature wear and tear.

Forecast Heating, Cooling, and Refrigeration serves residential and commercial customers in Summerlin, Anthem, North Las Vegas, Boulder City and Las Vegas. Call us at 702-919-4546.