Don't Make These Common Mistakes When Using Air Filters for Your House

Are you using air filters for your house, but still experiencing poor indoor air quality? It's possible that you may be making common mistakes that are preventing your air filters from working effectively. Don't worry, we've got you covered! Below are three common mistakes to avoid when using air filters for your house.

Firstly, ignoring filter replacement schedules can cause a build-up of dirt and debris on your filter, decreasing its effectiveness. Secondly, purchasing the wrong filter size can also prevent your air filter from working properly. Lastly, failing to regularly clean your air filters can cause clogs and restrict airflow.

By avoiding these common mistakes, you can ensure that your air filters are working effectively and improving the indoor air quality of your house. Keep reading for more tips on how to properly use air filters in your home!

Understanding the Different Types of Air Filters

If you're looking to improve the air quality in your home, it's important to understand the different types of air filters available. Here are some of the most common types:

1. Fiberglass Filters

These are the most basic and least expensive type of air filter. They are made of loosely woven glass fibers and are designed to trap large particles like dust and dirt. However, they do not capture smaller particles like pollen or pet dander.

2. Pleated Filters

Pleated filters are made up of layers of material that are folded like an accordion. The folds increase the surface area of the filter, allowing it to capture more particles. They are more effective than fiberglass filters at trapping smaller particles and can last longer before needing to be replaced.

3. Electrostatic Filters

Electrostatic filters use static electricity to attract and trap particles. They are more effective than fiberglass or pleated filters at capturing small particles like pollen and smoke. They can be washed and reused, making them more eco-friendly and cost-effective in the long run.

4. HEPA Filters

HEPA stands for High-Efficiency Particulate Air. These filters are made up of a dense mat of fibers that can trap particles as small as 0.3 microns. They are the most effective type of air filter and are usually found in hospitals and other medical facilities. However, they are also the most expensive and require more frequent replacement.

Choosing the right type of air filter depends on your individual needs, but understanding the differences between these types can help you make an informed decision. Remember to replace your air filter regularly to keep your air quality at its best.

Choose the Right MERV Rating for Your Needs

When selecting an air filter for your home, it is essential to choose the right MERV rating. MERV stands for Minimum Efficiency Reporting Value, and it is a rating system that measures the effectiveness of air filters in trapping airborne particles.

The MERV rating scale ranges from 1 to 20, with 1 being the least effective and 20 being the most. While it may be tempting to go for the highest rating, choosing the right rating for your needs can save you money and ensure that your HVAC system is not overworked.

If you have a pet, allergies, or respiratory issues, it is recommended to choose a filter with a higher MERV rating between 8 and 13 as they can capture smaller particles that trigger allergies or asthma. However, if you have a standard HVAC system or don't have any specific health concerns, a filter with a rating of 6 or 7 is adequate.

It is important to keep in mind that a higher MERV rating means a denser filter, which can reduce airflow and put more strain on your HVAC system. You should consult with your HVAC technician before choosing a filter with a rating higher than 13.

Take the time to consider your specific needs when choosing an air filter with a MERV rating. Doing so will help you maintain a healthy home and keep your HVAC system running efficiently.

Place air filters in the correct location

One common mistake homeowners make when using air filters is not placing them in the correct location. Where you place them can determine how effective they are at filtering air and protecting your indoor air quality.

Air filters should be placed in your HVAC system or portable air purifiers. Make sure they are installed in the right direction with the arrows pointing towards the airflow. This way, they can capture pollutants, dust, and other airborne contaminants that can harm your health.

Do not place your air filters in areas with poor airflow, such as closets or attics. This can cause the air filter to clog up faster, reducing its effectiveness. Avoid placing them near doors or windows, which can bring in outdoor pollutants and reduce indoor air quality.

For better air filtration, consider placing additional air filters in high traffic areas such as the living room or kitchen. Remember to change your filters regularly, as they can become clogged and less effective over time. Clean filters also help your HVAC system running efficiently, saving you money on energy bills.

By placing air filters in the correct location, you can ensure that your indoor air quality is protected and your family is breathing clean air.

Maintain and replace air filters regularly

Regular maintenance and replacement of air filters is crucial for the efficient functioning of your air conditioning system. Dirty and clogged filters can cause your AC to work harder, leading to higher energy bills and mechanical issues. Here are some tips for maintaining and replacing your air filters:

1. Check your air filters monthly: Make a habit of checking your air filters at least once a month to see if they need cleaning or replacement. If you have pets or live in an area with high pollen or dust levels, you may need to check them more frequently.

2. Clean or replace dirty filters: If you notice that the filters are dirty or clogged, clean or replace them immediately. Follow the manufacturer's instructions for cleaning or replacing filters.

3. Use high-quality filters: Invest in high-quality air filters that can trap smaller particles, such as pollen, pet dander, and bacteria. This can improve indoor air quality and protect your family from allergies and respiratory issues.

4. Schedule professional maintenance: Hire a professional to inspect and maintain your air conditioning system at least once a year. They can check the filters and other components to ensure that they are working efficiently.

With regular maintenance and replacement of air filters, you can ensure that your air conditioning system is working efficiently and providing clean and healthy air for your family. Don't neglect this important maintenance task and avoid the common mistakes that can lead to costly repairs and health issues.

Supplement air filters with other indoor air quality solutions

While air filters can greatly improve indoor air quality, they shouldn't be the only solution in your arsenal. Here are some other solutions to supplement your air filters:

1. Air Purifiers: Air purifiers work similarly to air filters, but they use different technologies to remove impurities from the air. They're especially helpful for removing allergens, pet dander, and smoke. If you have allergies or asthma, an air purifier can be a great addition to your home.

2. Humidifiers: During the winter months, indoor air can become dry and uncomfortable. Humidifiers add moisture to the air, making it easier to breathe and reducing the risk of respiratory infections. They can also help with dry skin and lips.

3. Ventilation: Proper ventilation is key to maintaining good indoor air quality. Make sure your home has adequate ventilation, especially in areas prone to moisture, like the bathroom and kitchen. You can also install a whole-house ventilation system to circulate fresh outdoor air throughout your home.

4. Cleaning: Regular cleaning can go a long way in improving indoor air quality. Dust and vacuum frequently, and use natural cleaning products whenever possible to avoid introducing harmful chemicals into the air.

5. Plants: Indoor plants not only add natural beauty to your home, but they can also improve air quality by absorbing toxins and releasing oxygen. Some great air-purifying plants include spider plants, peace lilies, and snake plants.

By supplementing your air filters with these other indoor air quality solutions, you can create a healthy and comfortable home environment for you and your family.

Final Thoughts

Having high-quality air filters in your home is crucial for maintaining good indoor air quality and protecting your health. However, it's essential to choose the right filters, replace them regularly, and avoid common mistakes like using the wrong MERV rating or neglecting to clean your HVAC system. By following these tips, you can ensure that your air filters are doing their job effectively and keeping your home safe and healthy.

Frequently Asked Question

The most recommended air filter for home use is the HEPA or the high-efficiency particulate air filter. It can remove up to 99.97% of air-borne pollutants and allergens at home. By that, it means it could remove pollutants such as dust, mold, pollen, pet dander, viruses, smoke particles, and bacteria. 

Whole house filtration is worth it if the household members suffer from allergies, asthma attacks, and other respiratory illnesses. Homeowners with a whole house filtration system report less frequent asthma and allergy attacks. 


Most standard-designed homes have 2 air filters right at their intake vents. The smaller the house, the fewer air filters you need. If it is larger, then you might need more to compensate per square foot of the house. 

By the rule of thumb, 3 months or 90 days is the most recommended frequency of changing the air filter. For those with pets or houses located in drier climates, then you might need to change it more frequently like from 6 weeks to 2 months interval.

Typically, it is just okay to use cheaper air filters as long as it does the job based on your needs. If you are not sensitive to dust, pollen, or pet dander, you might not need a very expensive air filter. Although cheaper air filters are not as effective as their expensive counterparts, they would still depend on your home setup. You might still have to replace them when they’ve reached their maximum life span.