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When was the last time you thought about the air filter in your home’s HVAC system? Dirty air filters can cause a variety of problems, not just for your heating and air conditioning system but also for your health and home comfort.

Effects of a Dirty Air Filter
  • When an air filter gets dirty, it stresses your forced-air cooling and heating systems by causing it to work harder than it has to. It can be difficult for your system to blow air through a filter that has become clogged with dust, dirt and other debris. In air conditioners and heat pumps used in cooling mode, this can cause the evaporator coil to freeze up. In furnaces, the airflow restriction can cause the system to stop producing heat altogether. Dirty filters also drive up your energy costs, and can shorten the service life of your HVAC system.
  • Another factor to consider is that once an air filter has become clogged, it loses the ability to collect particles from the air, leaving them free to circulate through your air ducts and living space. Among the many particles air filters are designed to trap are mold spores, dust, dust mites, pet dander, pollen and a host of other irritating particles that can potentially worsen asthma and allergy symptoms.
Changing Dirty Air Filters

Depending on how mush you use your HVAC system is getting, what type of filters you use, and whether your home has long-haired pets or other special circumstances, your air filter should be changed or cleaned every one to three months. Disposable paper or fiberglass filters get dirty most quickly, and typically need to be changed monthly, while pleated filters usually last longer. If you use reusable HVAC filters, you can check them once a month during the heating and cooling seasons, and then clean them whenever they appear dirty.

For more information on the effects of dirty air filters, please contact us at NisAir Air Conditioning and Heating today. We’ve been serving Martin, Palm Beach and Indian River counties since 1973.

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