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July 03, 2023 3 min read

Have Pets? Every 30 Days, No Pets? Every Three Months.

How often should air filters be changed? When it comes to maintaining a healthy living environment, we often focus on cleaning surfaces, organizing spaces, and decluttering our homes. The regular changing of air filters is an important aspect that can significantly impact indoor air quality and overall well-being.

dirty air filter with owner of Filters Direct USA

The Role of Air Filters

Air filters play a vital role in trapping airborne particles, such as dust, pet dander, pollen, mold spores, and even bacteria, before they circulate throughout your home.

pile of dust

They are a fundamental component of heating, ventilation, and air conditioning (HVAC) systems, helping to maintain a healthy and comfortable living environment.

How Air Filters Work

Air filters are typically made of materials designed to capture and hold particles as air passes through them. These filters are rated based on their efficiency in filtering out different particle sizes.

The MERV (Minimum Efficiency Reporting Value) rating system is commonly used to measure filter effectiveness. Beware of high MERV ratings for home filters. At Filters Direct USA, we believe in combing a 9 MERV rating with additional filtering benefits.

Merv 9 Rating on purpose

Tacky material traps more dirt, dust, and dander circulating through your heating and cooling system. Antimicrobial material is layered into the filter to reduce the chance of mold growing in and around the filter.

How Often Air Filters Should Be Changed

The frequency at which you should change your air filters depends on various factors, including the following:

  1. Homes with more occupants, pets, or a higher level of indoor air pollution may require more frequent filter changes. If you have allergies or respiratory conditions, consider replacing your air filters more frequently to reduce potential triggers.
  2. The air quality in your area can also affect filter lifespan. If you live in an area with high pollution or excessive dust, changing filters more often is advisable.
  3. Always refer to the manufacturer's guidelines specific to your air filter. They usually provide recommended change intervals based on their product's design and efficiency.
  4. Sign up for a filter auto-shipment subscription. This will ensure that your filters will arrive right on time, give you the reminder you need, and save you a trip to the store.

Guidelines for Filter Replacement

Here are some guidelines to help you determine when to change your air filters.

  1. Inspect your air filter at least once a month. If it appears dirty, clogged, or discolored, it's time for a replacement. A clean filter will allow for better airflow and more efficient filtration.
  2. As a general rule, change standard 1" to 2" filters every three months or every 90 days. This interval is suitable for most households with average usage and occupancy.
  3. If you have furry friends or suffer from allergies, consider replacing filters every 30 days. This helps minimize pet dander, pet hair, and allergens in the air, providing a healthier indoor environment.
  4. If you live in an area prone to high pollution, frequent dust storms, or ongoing construction nearby, it's advisable to change your filters more frequently.

Dog laying on rug in home

Benefits of Regular Filter Changes

Ensuring regular air filter changes in your home offers several benefits.

  1. Clean air filters trap and remove airborne pollutants, reducing the number of particles circulating in your home and promoting better air quality.
  2. Clogged air filters restrict airflow, forcing HVAC systems to work harder, resulting in higher energy consumption and bills. Regularly changing filters helps maintain optimal airflow and reduces energy bills.
  3. Clean air filters prevent dust and debris from entering your HVAC system, protecting it from potential damage.
Mark McNally
Mark McNally