International Compliance Association (ICA) Home Inspector Practice Exam

What is a common issue with electronic air filters?

1. Need to be replaced monthly

2. Need to be cleaned often

3. Require constant power supply

4. Emit harmful gases

The correct answer is: Need to be cleaned often

Electronic air filters are commonly known for requiring frequent cleaning to maintain their efficiency and functionality. Unlike disposable filters that can simply be replaced, electronic filters rely on a charged mechanism that attracts airborne particles. Over time, these particles accumulate on the filter's surfaces, obstructing airflow and reducing the filter’s effectiveness. Regular cleaning is necessary to ensure that these filters can continue to perform optimally and capture pollutants such as dust, pollen, and smoke. The other choices touch on different aspects of air filters, but do not accurately represent the typical issues associated with electronic air filters. For example, while these filters do require power to operate, the emphasis on constant power is not representative of the maintenance aspect that is central to their efficiency. Additionally, electronic filters are designed to be cleaned rather than replaced regularly, making the option about needing to be replaced monthly inaccurate. It's also worth noting that credible electronic air filters are engineered to be safe and not emit harmful gases under normal operational circumstances.