Here’s one bit of information you should, hopefully, already know: your air conditioning and heating systems use a filter. You may also know that the air filter helps to keep allergens and germs under control. Finally, you have likely heard that you should change the air filter regularly.
Even if you have heard that final statement, though, that it is important to replace the filter, it may be a task you feel comfortable putting off. After all, you may not feel like allergies are much of a problem in your household, and it seems like an unnecessary expense to many.