The large width and length define 20x25x1 furnace filters but exceptionally thin thickness. These 1-inch-thick furnace filters are easy to install and maintain, just as is the case with any other type of furnace filter.
In this review, we shall look at some of the best 20x25x1 furnace filters currently available. We will also discuss some of the things that you should consider when choosing a furnace filter.
Best 20X25X1 Air Filter
1. Filtrete 20x25x1, AC Furnace Air Filter
The Filtrete 20x25x1 AC Furnace Air Filter scores excellently in maintaining the Indoor Air Quality of your room. You need an air filter that can trap both large and small contaminants to keep the air quality in your house high enough.
This furnace filter has a MERV rating of 11. Filters with a MERV rating of 11 or 12 function perfectly in trapping small and large contaminants. Furthermore, such filters do not interfere with the flow of air in your house.
If you have people who are allergic to specific contaminants, including pollen and even small fur particles from your pets, this furnace filter can help protect them. It is designed to trap micro allergens that may be floating around in the air in your home. Such micro allergens are known to cause allergic reactions and even illnesses.
However, there are only two pieces of this furnace filter in every pack. This means that you may have to purchase additional packs quite often.
- Designed for trapping micro allergens that cause illnesses and allergic reactions
- A high MERV rating of 11 is appropriate for maintaining indoor air quality.
- The effective performance, thanks to the exclusive 3-in-1 filtrete brand technology
- There are two pieces only in every pack
2. AIRx Filters Allergy 20x25x1 Furnace Filter
Odors can be a significant problem in your home. They come from all manner of places, including the kitchen and bathroom. A powerful furnace filter that can trap the tiny particles that cause odors is a step in the right direction.
The AIRx Filters Allergy 20x25x1 Furnace Filter is designed to fight odors in your house by trapping the tiny particles that cause the odors.
Also, this furnace filter has a pleated surface. Therefore, the surface is exceptionally effective in attracting and trapping small and large contaminants. This furnace filter can trap about 75% of small contaminants that measure 0.3 to 1.0 microns wide.
The only notable drawback of using this air filter relates to longevity. The furnace filter does not last if it is indicated on the packaging. You may have to replace your furnace filter before the 90 days indicated on the packaging are over.
- Effective in dealing with odors in your house
- Its pleated surface can trap all types of contaminants, including allergens, lint, dust, pollen, smog, and smoke.
- There are six pieces in every pack
- The air filter does not last if it is indicated on the packaging.
3. Nordic Pure 20x25x1 MERV 12 Pleated AC Furnace Air Filter
One of the most impressive Nordic Pure 20x25x1 MERV 12 Pleated AC Furnace Air Filter features is its surface. The surface of this furnace filter is pleated and electrostatically charged. It can attract and trap up to 80% of microparticles that are 0.3 to 1.0 microns wide.
More so, this furnace filter can effectively fight microorganisms because its surface has antimicrobial properties. This means that it can protect people in your home from cold, flu, and other illnesses caused by airborne microorganisms.
However, just as is the case with all products, the Nordic Pure 20x25x1 MERV 12 Pleated AC Furnace Air Filter has its shortcomings. Primarily, the high MERV rating of 12 comes at a cost.
The air filter may interfere with the airflow in your house. It is always good to choose a MERV rating that maximizes the air filtration performance without compromising the airflow.
- A high MERV rating of 12 for superior performance
- The surface is electrostatically charged to attract microparticles
- The surface is pleated and has antimicrobial properties
- The high MERV rating may interfere with the airflow
4. FilterBuy 20x25x1 Air Filter
The FilterBuy 20x25x1 Air Filter is perfect for maintaining the airflow in your house because of its relatively low MERV rating of 8. Such a furnace filter will not force your blower to overwork. Thus, installing it will save you the costly repairs to the HVAC system that usually arise when the blower gets damaged.
The synthetic media on the surface of this furnace filter does an excellent job in attracting and trapping contaminants. It is sufficient for trapping common contaminants, including smoke, smog, dust, and even dander. You will have a clean indoor environment when you install this furnace filter in your HVAC system.
Using the FilterBuy 20x25x1 Air Filter is a breeze. You do not need to possess expert knowledge to install this furnace filter properly. You also do not need to do anything once the furnace filter is installed correctly. It takes about 90 days for the furnace filter to be completely saturated with contaminants and require a replacement.
- Perfect for airflow because of the relatively low MERV rating of 8
- The synthetic media is exceptional in trapping small and large contaminants
- Easy to install and maintain
- The relatively low MERV rating undermines the capacity of the filter to trap high percentages of small contaminants.
5. AIRx Filters Allergy 20x25x1 MERV 11 Pleated Air Filter
This furnace filter is designed to trap large and small contaminants. It can trap about 80% of microparticles that measure about 0.3 to 1.0 microns wide.
Therefore, you can rely on this furnace filter to protect you from allergens and other contaminants, including lint, dust, pollen, and smoke.
If you are looking for a furnace filter that can help fight odors in the home, the AIRx Filters Allergy 20x25x1 MERV 11 Pleated Air Filter may be the right choice.
This furnace filter has a tightly pleated surface that can trap all manner of microparticles, including those that cause foul odors in your home. This means that the air filter can help you to increase the Indoor Air Quality in your home.
You will have to bear with the trouble of replacing your furnace filter often if you choose the AIRx Filters Allergy 20x25x1 MERV 11 Pleated Air Filter. This furnace filter becomes concentrated quite fast. You may not have to wait for the recommended 60 days to elapse before you think about replacing it.
- There are six pieces in every package
- Effective for odor reduction and germ removal from the air
- A densely pleated surface traps all small and large contaminants
- The furnace filter gets saturated quite fast
6. E-Z Flow Air Filter
Consider the E-Z Flow Air Filter if you are looking for a simple but effective furnace filter to remove large airborne contaminants from your home. This simple filter has a MERV rating of 4, which is relatively low.
However, there are several benefits of using a furnace filter that has a low MERV rating. Notably, such a furnace filter will not interfere with the airflow in your house. High MERV ratings are synonymous with poor flow of air and damaged blowers of your HVAC system.
Second, this furnace filter can trap all kinds of large airborne contaminants, including dust, pollen, and smoke. You will not have to worry about such large-sized contaminants when installing this furnace filter in your HVAC system.
Third, the furnace filter has a metal frame around the media. The metal frame strengthens the furnace and keeps it in good working condition for a long time. If your house is not particularly dirty, this furnace filter can remain helpful for even three months.
- It removes household dust, pollen, smoke, and smog particles
- It is pretty friendly to the HVAC system because it does not interfere with the flow of air
- The metal media retainer enhances its strength and longevity
- Unable to attract and trap microparticles
How Long Does a 20x25x1 Filter Last?
On average, your 20x25x1 furnace filter will last for 90 days or three months. However, this may vary based on various factors. If your house is particularly full of contaminants, the furnace filter will require to be replaced before the recommended three months elapse.
The contaminants may be in the form of a lot of smoke, dust, or even pollen. When such contaminants are in the air in your room, the furnace filter will become saturated very fast.
Alternatively, your furnace filter may last for a longer time than what is indicated on its packaging. This may be the case if the indoor environment of your house is immaculate. This means that it will take a long time for the dirt to accumulate on the surface of your furnace filter fully.
You can always tell if your furnace filter is saturated and needs to be replaced. If the air in your house suddenly becomes full of contaminants, it means that the furnace filter cannot take up additional contaminants. It may be the right time to replace the furnace filter.
Things to Consider When Choosing a Furnace Filter
Choosing a furnace filter may be challenging if you are not sure about the specifications you are looking for. Here are a few things that you should consider when choosing a furnace filter.
- MERV rating. The MERV rating is an indicator of the level of performance of your furnace filter. The higher the MERV rating, the larger the percentage of small and large contaminants that the furnace filter will trap. However, remember that furnace filters with very high MERV ratings can interfere with the airflow in your house.
- Pleated versus non-pleated surfaces. Furnace filters with pleated surfaces are more effective than those with non-pleated surfaces. The pleating of the strands of the furnace filter dramatically increases the surface area. Therefore, such filters can trap vast amounts of contaminants.
- Furnace filter thickness. The thickness of furnace filters ranges from 1 inch to 5 inches. The thicker the furnace filter, the longer the time that it takes to get saturated. Therefore, consider the thickness of the furnace filter that you intend to use.
Is the MERV Rating of a Furnace Filter Important?
The MERV rating of a furnace filter is important in several ways. Primarily, the MERV rating shows the overall performance level of the furnace filter. The higher the MERV rating, the higher the performance of the furnace filter.
The MERV rating scale ranges from 1 to 16. Furnace filters with MERV ratings of 1 to 4 are good at capturing only a small percentage of large contaminants. Such air filters will not help you if the air in your home is full of small contaminants.
Furnace filters with a high MERV rating of over 11 are good at trapping high percentages of small and large contaminants. Therefore, such furnace filters can effectively maintain the Indoor Air Quality of your home by attracting large percentages of microparticles as well as large contaminants, including dust and pollen.
How to Choose the Right MERV Rating for your Furnace Filter
To choose the right MERV rating for your furnace filter, consider the desired level of Indoor Air Quality, the kind of contaminants, and the ease of airflow.
If you would like to maintain a very high level of Indoor Air Quality, it would be wise to go for a furnace filter with a matching high MERV rating. Such furnace filters will attract and trap even up to 90% of small-sized and large contaminants.
If your house is full of small-sized contaminants that measure from 0.3 to 1.0 microns, go for very high MERV ratings of over 11. Furnace filters with such high MERV ratings can successfully remove such small-sized contaminants.
Can High MERV Ratings of Furnace Filters Damage your Furnace?
Exceptionally high MERV ratings of furnace filters can damage your furnace. However, this is not always the norm. A furnace filter with a very high MERV rating may damage your blower because it may restrict airflow.
When this happens, your blower is forced to overwork to maintain the home’s desired level of temperature and airflow. This may cause the blower or any other component of the HVAC system to get damaged.
20x25x1 furnace filters can be a perfect fit for your home. However, when compared to other thicker ones, 1-inch-thick furnace filters get saturated with contaminants fast.
The good thing about them is that they hardly cause problems with the airflow unless you go for ones with exceptionally high MERV ratings.