A Homeowner’s Guide to Air Quality Excellence

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The effectiveness, dependability, and performance of residential HVAC filters depend heavily on air filters. Over 1,600 cubic feet of air are circulated each minute by the typical heating and cooling system. A good furnace filter should be able to efficiently remove harmful particles and pollutants without blocking system airflow or decreasing performance. 

Type of Filter-

MERV 8: MERV 8 filters are frequently utilized in residential settings and are regarded as medium-efficiency filters. They work well at collecting bigger particles like pollen, dust mites, and some mold spores. They might not be able to successfully collect microscopic particles like smoke or pathogens, though.

MERV 11: MERV 11 filters have better effectiveness and can catch smaller particles. They are efficient in getting rid of more contaminants, such as certain bacteria and smoke particles. Replacement should be done every six to twelve months.

MERV 13: Among the highest-efficiency filters advised for household usage are MERV 13 filters. They can collect minuscule particles such as smoke, viruses, and bacteria.

Household Occupancy and Activity Levels: The experts at Custom Filter Direct state that tight fits are ideal for filters. The filter might not be the proper size for your system if there are spaces around its frame after installation or if your household capacity is large. 

Indoor Air Quality: Over the past few years, it has been found that, even in the biggest and most industrialized cities, the air inside residences and other structures can be far more significantly contaminated than the outside air. People usually spend about 90% of their time indoors. As a result, interior air pollution exposure may pose greater health concerns for a large number of people than outdoor exposure.

HVAC System Usage: The length of time your HVAC system operates might affect how quickly filters clog. You might need to change your filters more regularly than in milder climes or during periods when the system is used less frequently if you live in a location with severe temperatures and your system runs virtually nonstop during certain seasons.

Manufacturer Recommendations: Standard HVAC air filters should be changed at least every three months, or as recommended by the air handler manufacturer, to maintain clean, breathing interior air. The filter may need to be replaced more regularly in some circumstances. Regular maintenance schedules that include changing the air filter also help to maintain HVAC equipment’s optimal performance, minimize costly repairs, prevent malfunctions, and use less energy.

General Guidelines for Changing Home AC Filters:

  • Once a month at the very least, check your air filter. It only takes a minute or two to check your air filter and another minute or two if you need to replace it. 
  • High-efficiency filters may have an impact on how well an HVAC system operates, so it’s best to consult the system or a qualified specialist.

Benefits of Regular Filter Replacement

Improved Indoor Air Quality: You may be looking for a better air filtration system if you frequently have issues with indoor air quality. It might just require switching to an air filter that can capture larger particles for certain individuals. A MERV rating is used to quantify this; the higher the number, the more debris an air filter can remove from the air that passes through it. 

Your indoor air quality will be improved if you replace your old air filter with residential HVAC filters resulting in increased energy use and possibly an annoying breakdown. 

Increased Energy Efficiency: Before making your choice, you should also think about how much energy your air purifier will need. Again, this varies widely based on the type and dimensions of the air purifier. It makes sense that a smaller air purifier like 12x25x1 or 12x24x1 will use less electricity. 


Any type of HVAC system in your house needs a high-quality air filter that fits properly to improve indoor air quality and maintain unit efficiency. Contact Custom Filters Direct at 1-877-958-5612 if you need help with an air filter. 


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