What to Look for When Buying Air Filters for Your House: Essential Tips

Are you tired of constantly sneezing or suffering from allergies and headaches in your own home? The solution could be as simple as changing your air filters. But with so many options available, it can be overwhelming to know which one to choose. That's why we've put together this guide on what to look for when buying air filters for your house.

First and foremost, it's important to consider the size and density of the filter. A filter that is too small for your HVAC system won't be effective, while a filter that is too dense can restrict airflow and reduce your system's efficiency. You should also look for filters with a high MERV rating, which measures their ability to capture airborne particles, such as pollen, dust, and pet dander.

Lastly, don't forget to factor in your budget. While it may be tempting to opt for the cheapest option, investing in a higher quality filter can save you money in the long run by improving your indoor air quality and extending the lifespan of your HVAC system. Keep these essential tips in mind when shopping for air filters and breathe easier in your home.

Understanding the Different Types of Air Filters Available

When it comes to air filters, it's important to understand that not all filters are created equal. Each type of filter has its own specific benefits and drawbacks, so it's important to choose the right one for your specific needs. Here are the most common types of air filters:

1. Fiberglass Filters

Fiberglass filters are relatively inexpensive and are commonly found in most hardware and home improvement stores. They work by capturing larger dust particles and debris but do not capture smaller particles like mold and some allergens.

2. Pleated Filters

Pleated filters are made of cotton or polyester and are a step up from fiberglass filters. They are more effective at capturing smaller particles, but they also have a higher resistance to airflow. This means that your HVAC system may have to work harder to push air through the filter.

3. HEPA Filters

HEPA (High-Efficiency Particulate Air) filters are the most effective filters available. They capture 99.97% of particles as small as 0.3 microns. However, they also have the highest resistance to airflow, which may put a strain on your HVAC system. HEPA filters are typically used in hospitals, laboratories, and other settings that require extremely clean air.

4. Electrostatic Filters

Electrostatic filters use static electricity to attract particles like a magnet. They are more effective than fiberglass filters but do not capture particles as small as HEPA filters. They also have a low resistance to airflow, which means they do not put as much strain on your HVAC system.

Understanding the different types of air filters available can help you make an informed decision when purchasing an air filter for your home. Think about your specific air quality needs, your budget, and your HVAC system's capabilities before making a purchase.

Determine the Correct Size and MERV Rating for Your HVAC System

When it comes to buying air filters for your house, it's important to determine the correct size and MERV rating for your HVAC system. If you install the wrong size or MERV rating, it can result in reduced efficiency, poor air quality, and even damage to your heating and cooling equipment.

The first step is to check your owner's manual or contact your HVAC system's manufacturer to determine the recommended filter size and MERV rating. This information can also be found on the existing filter or filter slot.

Once you know the correct filter size, measure the filter slot to ensure you are purchasing the right size. Standard sizes include 16x20, 20x25, and 24x30, but custom sizes are also available. It's important to never force a filter that doesn't fit properly, as this can lead to air leaks and reduced effectiveness.

The MERV rating is a measure of the filter's efficiency in trapping particles. The higher the MERV rating, the finer the particles the filter can capture. However, a higher MERV rating can also reduce airflow and put more strain on your HVAC system. The recommended MERV rating will depend on your household's specific needs and allergies, and vary between 4 and 13. You should consult with a HVAC professional before choosing a filter with a higher MERV rating to ensure that your system can handle it.

Determining the correct size and MERV rating for your HVAC system may seem like a hassle, but it's essential for maintaining healthy air quality and efficient heating and cooling. Take the time to research and consult professionals to ensure you are choosing the right air filter for your home.

Consider the Frequency of Filter Replacement

One crucial factor to consider when buying air filters for your house is the frequency of replacement. Air filters need to be replaced periodically to ensure they continue performing optimally and filtering the air efficiently.

The filter's lifespan typically depends on various factors like the frequency of use, the air quality in your home, and the type of filter. A high-quality filter might last up to six months, while a lower-quality one might need replacement monthly or bimonthly.

To determine how frequently you should replace your filter, you should consult the manufacturer's instructions. In most cases, the recommendation will be based on the MERV rating. A filter with a higher MERV rating will trap more pollutants from your indoor air but might need replacement more frequently.

If you or a family member suffers from allergies or respiratory issues, consider replacing the filter more frequently. Doing so may help reduce the number of pollutants in the indoor air and improve the air quality in your home.

Finally, set a reminder to check your air filters regularly and replace them when necessary. Waiting too long to replace a filter can cause it to clog up, which reduces its efficiency in filtering pollutants from your home's indoor air.

In conclusion, by considering the frequency of filter replacement, you can ensure that the air filter works optimally and plays its role in improving the indoor air quality of your home.

Evaluate the Cost-Benefit of Investing in Higher Quality Filters

When it comes to air filters, there is a wide range of options available in the market, ranging from basic fiberglass filters to high-end HEPA filters. While basic filters are cheaper, they do not provide the same level of air quality as higher quality filters. So, is it worth investing in these higher quality filters?

The answer is, it depends. If you have a family member who suffers from allergies or respiratory problems, then investing in higher quality filters may be worth it. These filters can effectively trap small particles from the air, including allergens, dust, and even some viruses. This can improve the overall indoor air quality and reduce respiratory problems.

On the other hand, if no one in your family has any respiratory problems and you are on a tight budget, then sticking with a basic filter may be fine. However, it is still important to change them regularly to ensure they are working effectively.

Another factor to consider is the cost-benefit analysis. While higher quality filters may be more expensive initially, they can last longer and ultimately save you money over time. They also require less energy consumption which is a good thing for your electricity bill. Additionally, the improved indoor air quality can result in fewer medical expenses and a better quality of life.

In conclusion, it is advisable to evaluate the cost-benefit when buying air filters for your home. For families suffering from allergies or respiratory problems, higher quality filters can provide the best value. While for those on a budget or don’t necessarily need them, a basic filter can still do the job as long as it’s regularly maintained. Remember also, investing in higher quality filters will require less energy consumption and promotes a better and healthier environment.

Take Other Steps to Improve Your Indoor Air Quality

While buying air filters for your house is an important step towards improving your indoor air quality, there are other steps you can take to ensure that you and your family are breathing clean air.

One of the simplest steps you can take is to keep your home clean. Regularly dusting and vacuuming can help remove pollutants and allergens from your home. Be sure to also clean your bedding and curtains regularly, as they can harbor dust and other allergens.

Another important step is to control the humidity levels in your home. High humidity levels can lead to the growth of mold and mildew, both of which can cause health problems. Using a dehumidifier or air conditioner can help keep humidity levels in check.

Consider adding some indoor plants to your home. Not only do they look great, but they can also help improve your indoor air quality by naturally removing pollutants and toxins from the air.

Avoid using harsh chemicals in your home, such as bleach or ammonia-based cleaners. These chemicals can release harmful fumes into the air, which can negatively impact your indoor air quality. Instead, opt for all-natural cleaning products or make your own using ingredients like vinegar and baking soda.

Finally, ensure that your home is properly ventilated. Opening windows and doors and using exhaust fans in the kitchen and bathroom can help remove pollutants from your home’s indoor air and improve air quality.

Improving your indoor air quality doesn’t have to be a daunting task. By buying quality air filters, keeping your home clean, controlling humidity levels, adding indoor plants, avoiding harsh chemicals, and properly ventilating your home, you can breathe easy knowing that you and your family are breathing clean air.

Conclusion

Choosing the right air filters for your house can make a significant difference in the air quality and overall health of your home. By selecting the right filter size, type, and MERV rating, you can reduce allergens, mold, and other harmful particles in the air. Remember to inspect your filters regularly and change them every few months, especially during peak seasons. With these essential tips in mind, you can breathe easy and enjoy a cleaner and healthier living space for you and your family.

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.