Frequently Asked Questions

  • What is a MERV rating?
    • The Minimum Efficiency Reporting Value (MERV) is used by manufacturers to explain how efficient the air filter is at trapping airborne particles. A higher MERV rating means cleaner air but reduced air flow. MERV 8 filters capture 80% of airborne particles like pollen, dust mites, mold spores, and pet dander down to 3 microns in size. MERV 11 air filters capture up to 95% of the above mentioned airborne particles down to 1 micron in size. If you choose a MERV 13 filter, expect greatly diminished airflow but improved filtration of bacteria, tobacco smoke, and cooking oil down to 0.3 micron in size. Before you choose a MERV rating check with your HVAC manufacturer to see what your system is designed to handle. Picking the wrong filter can impact air flow and reduce equipment life.
  • How do I measure my air filter?
    • Using a tape measure, get the length, width, and depth of your filter slot.
      The length and width dimensions are interchangeable, though conventionally the first number is the smaller of the two.
      For the depth measurement, standard filters are nominally 1” (actual 0.75”), 2” (actual 1.75”), and 4” (actual 3.75”) deep.
  • Which way does my filter go?
    • Find the arrows on the side of the filter frame. The arrows should always face in the direction of airflow, so the filter should be inserted with the arrows facing towards the unit.
  • How often should I change my filter?
    • Replace your air filters every 3 months. You may need to replace your filters more frequently depending on air quality. If you are unsure about indoor air quality check the filter monthly. If you notice the filter material is greatly discolored or noticeably dirty change out the filter. Failing to replace air filters as recommended can lead to reduced system efficiency, greater energy costs, and poor air quality.
  • What gets trapped by home air filters?
    • Air filters trap dust, which includes: dirt, dander, mold spores, pollen, toxins released by cleaning products, and small fibers. The MERV rating of the filter determines what percentage (and how small) of dust gets captured.
  • What filter protects against COVID-19?
    • By itself, using an upgraded HVAC filter is not enough to protect people from COVID-19. When used along with other best practices recommended by the Centers for Disease Control and Prevention, an upgraded HVAC filter can be part of a plan to protect yourself and your family.
  • Which filter is best for my home?
    • Your choice in air filter should depend on needs. MERV 8 filters are perfect if you have no pets and allergies are not a serious concern. MERV 11 filters are recommend for occasional allergy sufferers and homes with pets. A MERV 13 filter should be used if allergies are a serious concern and there are tobacco smokers in the house.
  • Can I order in bulk for my business?

    Our order quantities are already priced at bulk.  So you are more than welcome to order for your business. 

  • How do I report a problem with my order?

    Simply contact us by phone (239-768-5558) or email at advancedfilters@advanced-

  • I ordered the wrong size filter; can I exchange it?

    Wrong size filter?  Not a problem just reach out and we will exchange it for you.