Choosing the right air filter and changing it out on time are two of the easiest ways to both improve your indoor air quality and also care for your HVAC system at the same time. You can keep reading to learn more about the different types of air filters and why it is important to change out the air filter regularly.
If you need guidance, you can always give our team a call for air filter installation in Rockledge, FL. We can talk to you about your air filter options and which one might be best suited for your home and family. When you schedule an annual AC maintenance appointment with our team, we will change out your air filter while we are visiting your home.
Air Filter Sizing
Measure the intake grate where your air filter goes and shop around until you find the matching size. Some sizes are more common than others, making them easier to find. You may be tempted to purchase an air filter that is slightly bigger or smaller and then try to make it work. However, this can be detrimental to your HVAC system.
Leaving a gap can mean that harmful particles are still able to get into your HVAC system. Cutting down a larger air filter can compromise how it fits and works to filter out dirt and other particles from the air. If you cannot find the right size filter in a local store, try ordering them online.
MERV Ratings
MERV is short for minimum efficiency reporting value and offers a measure of the types and amounts of particles a filter can remove. A higher MERV rating indicates that a filter is better at capturing particles from the air. Here’s a breakdown of MERV ratings and what you can expect:
MERV Rating of 1-4
You can expect these air filters to capture larger particles in the air like dust, including dust mites, pollen, fabric and carpet fibers, insects, and some insect waste. If you’re not too concerned with indoor air quality and want to prioritize strong airflow, this air filter may be right for you.
MERV Rating of 5-8
You can expect these air filters to capture smaller particles of dust, mold spores, particles from aerosol sprays, and pet dander. Anything under a MERV rating of 8 prioritizes airflow over indoor air quality.
MERV Rating of 9-12
You can expect these air filters to capture larger particles in the air like bacteria, allergens, and even bad odors. This is the higher end of what you find in residences. Air filters that are any stronger will block too much airflow in a residential HVAC system.
MERV Rating of 13-16
These heavy-duty filters are typical in hospital surgical centers and other areas where heavy filtration is paramount, such as smoking lounges. They collect a larger range of bacteria, smoke particles, oil droplets, and fine particles from sneezing.
MERV Rating of 17-20
These much stronger filters are designed for areas that require a high level of indoor air quality. Examples include healthcare settings or businesses that handle sensitive electronics. These filters capture even very small particles like viruses and smoke residue in the air.
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