11 Best Furnace Filters Of 2023 | Buyer's Guide And Reviews

It’s because of the furnace that those of you who have been suffering because of poor air quality can rest easy. And even more so if you have asthma or allergies. If you didn’t know already, the primary function of this filter is to keep hair, dust, debris, and other pollutants from entering the return duct of the furnace

Even though changing the filter frequently seems like an addition to your already long list of household chores, it has a ton of benefits. Now, that brings us to the burning question- which furnace filter will be the best for you?

Well, let’s move to the following sections to check out the reviews of some of the best furnace filters that are ruling the market now.

Best Furnace Filters

Whether you're looking for a filter that targets allergens, pet dander, or dust, we've got you covered. So, without further ado, here's the list of the 11 best furnace filters that will keep your home's air fresh and clean.

1. FilterBuy MERV 8 Pleated AC Furnace Air Filter - Best for Pets & Durability

It might feel like a lost battle when you’re putting in a lot of effort to keep the house clean, especially with pets around the house. But when you invest in a quality furnace filter, it makes the job easier. One such unit is the FilterBuy Pleated AC Furnace Air Filter, which works to capture pet dander. It offers many other benefits that you’ll learn now.

Filterbuy 20x20x1 Air Filter MERV 8 Dust Defense (2-Pack),...

20x20x1 replacement air filters for your furnace, air...
MERV 8 synthetic media (comparable with MPR 600 & FPR 5)...

Experience

When we were looking for a furnace filter, our main search criteria were to ensure that we pick a durable model. FilterBuy is known for offering the best value for money products and our AC service provider suggested this unit to us. We received a set of two products that lasts up to three months each.

It comes with a MERV rating of 8, which means that it can effectively remove lint, pollen, dust, debris, and pet dander from the air. And the best part, we had the option to select from numerous sizes which made it simple to find the right size.

Since it comes with 12 pleats per foot and offers several creases, it gradually improves the process of filtration. Thus, it manages to filter the indoor air at a drastic rate thanks to its airflow capacity of about 350 CFM.

We have also managed to seal the frame accurately to the furnace by using some extra weather-stripping foam. All in all, this is an excellent product for our home as it helps reduce pet hair and dander.

Pros

Features 12 pleats per foot
Reasonable price tag
Last for about three months

Cons

The size is slightly smaller than the given measurements

2. Honeywell Elite Allergen Pleated FPR 10 Air Filter - Best for Allergen Capture

This furnace filter is considered to be one of the best-selling units and has some good ratings. It comes in a range of sizes that comfortably fits most furnaces. The filter is made with reinforced pleated media that is designed to capture the tiniest of particles in the air. Let’s get to the following paragraphs to see whether it lives up to the hype or not.

Honeywell Home AC Furnace Media Air Filter 20 x 25 x 4 MERV...

Captures high percentage of house hold airborne particles,...
MERV 11 performance with low pressure drop

Experience

After having tried a range of furnace filters over the past few years, we can say this has been a wise investment. It has a MERV rating of 13 ( or an FPR of 10); this indicates that it can capture particles that are as small as 0.3 microns.

On top of that, it’s equipped with an electrostatic charge, which further attracts microscopic particles. The large surface area of this filter helps to improve its dust-holding capacity.

It works to remove pollen, dust, pet dander, lint, bacteria, mold spores, virus carriers, microscopic allergens, smog particles, and odor from the air. When it comes to the overall build quality, it has a moisture-resistant frame that manages to last for up to 90 days.

Since we have switched from poor-quality models to this unit, we can feel the difference by seeing how well this filter performs. Finally, it manages to significantly reduce the allergy symptoms around the house by reducing the dust build-up.

Pros

Heavy-duty, moisture-resistant frame
Electro-statically charged
Can filter down to the microparticle level

Cons

More expensive

3. Filtrete Micro Allergen Defense HVAC Air Filter - Best for Seasonal Allergies

If you’re looking for a furnace filter that is specially designed for keeping the air free from allergens, then this makes for an ideal choice. The Micro Allergen Defense Air Filter by Filtrete is known for its purifying and protective qualities. It’s a washable unit that manages to keep different allergens from circulating inside the house.

Sale

Filtrete 14x20x1 AC Furnace Air Filter, MERV 11, MPR 1000,...

OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC...
DESIGNED WITH EXCLUSIVE Filtrete Brand 3-in-1 technology...

Experience

During the monsoon and winters, we have to ensure that we have a quality furnace filter offering protection. With children around the house, it’s important to keep the air clean to protect them from battling colds and flu in the allergy season. This unit is particularly famous for its allergen-blocking properties.

It comes with a MERV rating of 11 and works efficiently to capture fine particles because of the electrostatic charge features. Moreover, it removes household dust, dust mite debris, lint, pollen, spores, smoke, and pet dander from the air.

Since we live in a pretty dust-prone area, we need to change the filter before it even completes the three-month duration. This helps to prevent putting too much strain on the heating or cooling system. We also got to choose from a variety of sizes, which is a bonus. Overall, it works brilliantly to provide relief from seasonal and pet allergies.

Pros

Reduces allergens in the air
Easy installation
Lasts for about 2 to 3 months

Cons

Poor build quality

4. Nordic Pure MERV 13 Pleated AC Filter - Best for Smoke Removal

If you’re someone who finds it difficult to breathe with cigarette smoke around the house, then you should check out this unit. This Pleated AC Furnace Air Filter by Nordic Pure helps in removing smoke particles before it manages to settle in. The filter also boasts a high MERV rating that showcases its efficiency.

Nordic Pure 16x30x1 (15 3/4 x 29 11/16 x 3/4) Pleated MERV...

Nominal Size: 16 x 30 x 1, Actual Size: 15 3/4 x 29 3/4 x...
Measure your air filter for the exact size and compare it to...

Experience

If you struggle to get rid of tobacco smoke from our clothing and furniture, then try investing in a quality filter. This unit has a high-quality furnace filter that removes smoke particles even before it starts settling in.

We had the option to choose from a range of different sizes, this is why it was easier to pick a unit that fits our furnace accurately. The MERV rating of 13 is also pretty impressive because it's the highest on the scale.

It can remove mold spores, airborne dust, pollen, smog, pet dander, dust mite debris, and fireplace and tobacco smoke from the air. The electrostatic charge feature also ensures that it manages to capture the fine particles that pass through the filter. If we manage to change the filter every 90 days, then it works to the best of its capability.

Pros

Removes fireplace and tobacco smoke
MERV 13
Made of synthetic materials

Cons

Slightly expensive

5. Flander PrecisionAire Nested Fiberglass Filters - Best for Budget Shoppers

If you had checked out some of the older filters, you must have seen that fiberglass was one of the most frequently used materials. And the top-rated option that comes under this category is the PrecisionAire Nested Fiberglass Filter by Flanders. You don’t have to extend your budget to purchase this unit, which makes it a suitable choice for many.

AAF Flanders 10059.011420 EZ Flow HVAC Filter, 24 Count...

Self-retaining spun glass media adheres directly to frame

Experience

We have been using fiberglass filters for over a decade, and finding such an affordable piece has been a great advantage. It’s available in a set of a few standard sizes, which makes it easy to order the right size.

The MERV rating of 4 is pretty minimal, but we generally don't face too many issues with the accumulation of dust or debris around the house. So, even if the rating is low, it helps to keep the indoor air quality in an optimal state. We can’t recommend this unit for homes with too many pets or if people are suffering from allergies.

Nevertheless, it features a quality filtering medium that is made with continuous filament spun glass. The filter frames are constructed with a chipboard, making it easy to install the unit. It also offers minimal airflow resistance, and the manufacturers claim that the filter should be changed every 30 days for better energy efficiency.

Pros

Made from fiberglass
Low airflow resistance
Easy to set-up

Cons

Require replacement after 30 days

6. Lennox Healthy Climate MERV 11 Box Filter

The Lennox Healthy Climate Box Filter is an excellent option if you’ve been looking for a highly-rated filter that can keep your home safe and clean. It comes with an innovative design, which can trap dirt particles and helps to prevent them from entering the house.

The main advantage of using this filter is that it lasts for six months, which is pretty high compared to other units.

Lennox X6673 MERV 10 Filter Media

98% efficient filtration media capturing particles as small...
High-efficiency alternative to one-inch filters

Experience

Just like when shopping for any household products, the main factor that we consider is the sturdiness and overall construction. Most other filters that we have used over the past few years usually last for about three months. Thus, a filter that has a durability of 6 months was a pleasant surprise.

The design is also unique, but it’s functions are on point because it traps dust particles and helps prevent them from entering the house. These panels are made with expanded aluminum mesh that has a clay coating to absorb and hold moisture.

So, when warm and dry air passes through the filter, it efficiently allows the water vapors to enter the house. And the wet pad helps to trap mineral pollutants found in water.

It has a MERV rating of 11, and the filter is made with electrostatically charged media. This again allows it to trap pet dander, mold spores, allergens, and pollen. The filter is build to trap irritants measuring as small as 0.3 microns.

Plus, it ensures that there won’t be any additional damage to the heating or cooling system, which is because it’s made with synthetic materials. This provides a large surface with minimal air resistance and a maximum area to hold dirt and other pollutants.

Pros

MERV rating of 11
Needs to be replaced after six months
Great build quality

Cons

Might not fit all furnaces

7. AIRx Health 1-inch MERV 13 Furnace Filters

If you’re concerned about the indoor air causing harm to your health, then it’s best to get a furnace filter that comes with a MERV rating of 13. This unit by AIRx is highly effective at trapping some of the major pollutants that are present in the air. The price is pretty reasonable for its quality. So, let’s check out whether this unit lives up to the expectations or not.

Sale

AIRx HEALTH 16x20x1 MERV 13 Pleated Air Filter - Made in the...

Experience

This AirX Health pleated air filter is one of the most efficient models that comes in a pack of six for better convenience. The functional properties of this unit ensure that it can dramatically reduce respiratory irritants, bacteria, smog, viruses, and mold throughout the entire house.

On any given day, this unit can outperform the fiberglass models. It protects the home from mold spores, dust mites, pollen, smog, and pet dander. Plus, it can also trap respiratory irritants like ultrafine particles, which affect our health.

It protects the air conditioning and heating equipment from getting clogged with dust. This further allows for better airflow along with reduced maintenance and energy costs. Since this filter is equipped with more pleats, it allows for improved particle-holding capabilities and airflow. All in all, this is a quality furnace filter that can be washed for better efficiency.

Pros

MERV rating of 13
Features electrostatic filter for trapping bacteria, smog, and viruses
Maximizes energy efficiency
Fair pricing

Cons

Requires frequent changes

8. Aerostar MERV 13 Pleated Furnace Filters

This 14x24x1 pleated air filter is made by a renowned company that focuses on making quality items at reasonable prices. It’s suitable for people with allergies, and especially for the ones suffering from asthma. The efficiency of this product is mainly because of the high MERV rating and its sturdy construction.

Sale

Aerostar 14x24x1 MERV 13 Pleated Air Filter, AC Furnace Air...

Nominal size: 14x24x1; Actual size 13 3/4"x 23 3/4" x 3/4";...
Designed to filter microscopic particles such as lint, dust...

Experience

We had used several other filters by Aerostar that have lower MERV ratings; with this unit, we could understand how high efficiency makes a difference. This unit comes in a box of six, which is sufficient enough to last for about two years or more.

According to the manufacturers, the filter should be changed within thirty to ninety days. Especially during the extreme summer and winter months, we need to change the filter more frequently because it tends to work at the optimum level.

The filter also comes with more pleats that reduce the airflow at a drastic rate. Also, it’s equipped with an electrostatic charge that makes the filter efficient enough to capture bacteria, dust, debris, and other pollutants that are as minute as 0.3 microns.

Lastly, the product helps to reduce the strain from a central cooling and heating system which improves the durability of the system. This helps to ensure that the indoor air quality is under control.

Pros

Large surface area
High-efficiency rate
Easy to install
Value-added product

Cons

Low airflow resistance
cons
cons

9. Electrostatic Washable 1-inch Furnace Filter

If you want to purchase a unit that has incredible construction, then do check out this Electrostatic filter. It’s crafted to improve the ventilation in the house. It also helps to remove tobacco smoke, dust, and other pollutants. This filter is manufactured in the US, so you can trust the long-lasting quality and overall longevity.

Trophy Air Washable Electrostatic HVAC Furnace Air Filter,...

Enhanced HVAC Effectiveness – Crafted to help improve your...
Cleaner, Healthier Air – These air conditioner filters...

Experience

We were selective about the build quality, after having tried a host of different models that didn’t live up to our expectations. This unit comes with enhanced HVAC effectiveness that ensures proper airflow by reducing airflow resistance.

The build quality is excellent; it boasts premium craftsmanship with four layers of top-grade aluminum and a pair of electrostatic media for better reliability.

It has a unique combination of woven polypropylene that comes encased in a metal frame. The structure of this filter is such that it efficiently removes substances that contaminate the air and causes allergies.

The installation was relatively simple, and each electrostatic air purifier slides in effortlessly into the HVAC system. Thus, we don’t have to seek professional help when we want to change the old filters. We have been using this unit in a heavy-duty environment, and other than having to clean the filter monthly, the functions are up to the mark.

Pros

Uses industrial premium-grade material
Durable construction
Suitable for heavy-duty environments

Cons

Requires monthly cleaning

10. FilterBuy Allergen 1-inch Furnace Filters

This filter is best suited for eliminating odor. So if you have been trying to find a way to get rid of tobacco or pet dander, then give this product a whirl! It’s known to be one of the best high-grade pleated filters that’s suitable for allergies and is mainly popular amongst most homes that have furnaces.

Filterbuy 20x20x1 Air Filter MERV 8 Odor Eliminator...

20x20x1 replacement air filters for your furnace, air...
MERV 8 (Odor Eliminator) synthetic media (comparable with...

Experience

We ordered this odor eliminator filter because it’s capable enough to remove odors from pets, smoke, cooking, and more. It can capture about 90% of the airborne particles that are found in most of our homes. This includes dust, lint, debris, and pollen.

It also comes with a MERV rating of 8, which makes it the best choice for residential homes. We wanted to opt for pleated filters because it’s best for households with a lot of pets around. The filter is designed to last around three months, but this again differs according to the frequency of usage. It also depends on how fast the filter surface gets dirty.

With about 12 pleats per foot, it has ample surface area for trapping more airborne particles that can withstand exposure to dampness and moisture. Overall, this is a great unit considering its efficiency and affordable price.

Pros

Suitable for homes with pets
12 pleats per foot
Efficient in trapping different allergy triggers

Cons

Users have complained about not finding the right size

11. Filtrete Clean Living 1-inch Furnace Filters

The Filtrete Clean Living furnace filter is a pretty impressive product that improves the efficiency of the HVAC system. It prevents any unwanted particles from entering your living space and keeps the machine clean. The main advantage of purchasing this unit is its affordability which comes without compromising the product quality.

Filtrete Clean Living Basic Dust Filter, MPR 300, 16 x 25 x...

Electrostatically charged fibers attracts and capture large...
Ideal for high-velocity heating and cooling systems

Experience

We have been using Filtrete air filters for quite some time now because it’s compatible with most heating and cooling systems. This unit comes with electrostatically charged fibers that can capture large airborne allergens like lint, pollen, and household dust.

The MPR is 316, which is standard, considering that we are not using the filter in a heavy-duty environment. Since the MERV rating is 6, this showcases the efficiency of its filtering power.

We received this unit in a set of six, and each piece can be used for about three months. So, we don’t have to worry about purchasing a new set within the next two years. And the installation was also relatively simple; we didn't take anything more than 10 minutes to set it up.

Overall, it delivers excellent performance and helps in protecting the health of all the members in the house. But we do need to change the filter frequently during the high-allergen seasons and when there is any construction work around the house.

Pros

Easy to install
Made with high-quality materials
Effective in filtering dust, gunk, and allergens
Affordable price

Cons

Frames might fall apart if it’s not installed correctly

Best Furnace Filters Comparison Table

Product	MERV Rating	Filter Type	Size	Material	Lifespan	Efficiency	Additional Features
FilterBuy MERV 8 Pleated AC Furnace Air Filter	MERV 8	Pleated	Varies	Synthetic pleated media	3 months	Captures dust, pollen, lint	Electrostatically charged for efficiency
Honeywell Elite Allergen Pleated FPR 10 Air Filter	MERV 11	Pleated	Varies	Synthetic pleated media	6-12 months	Effective against allergens	High-efficiency filtration
Filtrete Micro Allergen Defense HVAC Air Filter	MERV 11	Electrostatic	Varies	Synthetic electrostatic	3 months	Captures micro-allergens	Electrostatically charged for efficiency
Nordic Pure MERV 13 Pleated AC Filter	MERV 13	Pleated	Varies	Synthetic pleated media	3-6 months	Highest level of filtration	Hypoallergenic and antimicrobial
Flander PrecisionAire Nested Fiberglass Filters	MERV 4	Fiberglass	Varies	Fiberglass	1 month	Basic filtration	Disposable and budget-friendly
Lennox Healthy Climate MERV 11 Box Filter	MERV 11	Box	Varies	Synthetic media	6-12 months	Efficient particle capture	Deep pleats for increased surface area
AIRx Health 1-inch MERV 13 Furnace Filters	MERV 13	Pleated	1 inch	Synthetic pleated media	3-6 months	High-efficiency filtration	Antimicrobial and hypoallergenic
Aerostar MERV 13 Pleated Furnace Filters	MERV 13	Pleated	Varies	Synthetic pleated media	3 months	Captures fine particles	Made in the USA
Electrostatic Washable 1-inch Furnace Filter	Washable	Electrostatic	1 inch	Washable electrostatic	Reusable	Efficient particle capture	Washable and reusable
FilterBuy Allergen 1-inch Furnace Filters	MERV 11	Pleated	1 inch	Synthetic pleated media	3 months	Effective against allergens	Captures pollen, dust, and mold spores
Filtrete Clean Living 1-inch Furnace Filters	MERV 11	Pleated	1 inch	Synthetic pleated media	3 months	Captures large particles	Electrostatically charged for efficiency

Buying Guide For The Best Furnace Filter

Here’s a list of the factors that you need to consider before purchasing a furnace filter:

Filter size

You need to opt for a filter that fits accurately into the system to ensure better efficiency. To find the furnace filter size, you should check out the manual, or it might be highlighted along the edge of your new device.

MERV rating

This is another important factor that you need to consider because the MERV rating determines the system's efficiency in trapping dust and other pollutants. The higher the rating, the better its ability to remove dirt and contaminants. Try to select a model with the highest MERV, which your HVAC unit can comfortably accommodate.

System specifications

Although the ideal choice for filtering out pollutants is generally the HEPA filter, many residential units can’t handle it. But, if you don’t pick the right filter for your HVAC unit, then it can damage the system and drive down energy efficiency. So, it’s always advisable to check the manufacturer's instructions before placing the order.

Cost

If you buy a high-quality filter, then you’ll receive a good return on investment over time. However, the low-cost filters require frequent replacement, which further adds up to making a huge budget.

Furnace Filters FAQ's

The frequency of changing your furnace filter depends on various factors, including the type of filter, the level of pollutants in your home, and the manufacturer’s recommendations. In general, it is recommended to change standard disposable filters every 1 to 3 months, while high-efficiency filters may last up to 6 months or more. Regularly inspect your filter and replace it when it appears dirty or clogged.

MERV stands for Minimum Efficiency Reporting Value and is a rating system that indicates the effectiveness of a furnace filter in capturing airborne particles. The scale ranges from 1 to 20, with higher numbers indicating higher filtration efficiency. Filters with higher MERV ratings can capture smaller particles but may also restrict airflow more, requiring careful consideration of your HVAC system’s compatibility.

It depends on the type of furnace filter. Standard disposable filters are designed for one-time use and should be replaced. However, some filters, such as washable or electrostatic filters, can be cleaned and reused according to the manufacturer’s instructions. Be sure to check the filter’s labeling or consult the manufacturer to determine if it is washable and how to properly clean it.

To choose the right furnace filter, consider factors such as the size of your HVAC system, the level of air pollution in your home, and any specific concerns such as allergies or pets. Additionally, pay attention to the filter’s MERV rating, compatibility with your HVAC system, and the recommended filter change frequency. Consulting with an HVAC professional can help you make an informed decision.

Yes, a properly selected and maintained furnace filter can significantly improve indoor air quality. It can help remove airborne particles such as dust, pollen, mold spores, and pet dander, reducing allergens and pollutants circulating in your home. However, additional air quality improvement systems may be necessary for more advanced air purification.

Installing a furnace filter is typically a straightforward process. First, turn off your HVAC system. Locate the filter compartment, usually near the return air duct or blower motor. Remove the old filter and insert the new one, ensuring it is oriented correctly with the airflow direction indicated on the filter. Finally, secure the filter in place and restart your HVAC system.

High-efficiency furnace filters with higher MERV ratings offer several benefits. They can effectively capture a wide range of airborne particles, including smaller ones that can aggravate allergies and respiratory issues. These filters help improve indoor air quality, reduce dust accumulation, and create a healthier home environment.

Yes, a clean and properly functioning furnace filter can contribute to energy efficiency. The filter trapping dust and debris prevents them from clogging the HVAC system’s components. This allows the system to operate more efficiently, maintain optimal airflow, and reduce energy consumption. Regularly replacing the filter ensures maximum energy efficiency.

Dirty furnace filters can pose potential health risks. They can contribute to poor indoor air quality, allowing allergens, bacteria, and mold spores to circulate freely. This may lead to allergy symptoms, respiratory issues, and aggravated asthma. Regular filter maintenance and replacement are crucial for maintaining a healthy indoor environment.

Conclusion

Once again, thank you for reading through our article on the best furnace filters! We're excited to share valuable insights and real-life experiences gained while testing these products. Here's to enjoying purified indoor air, keeping allergies at bay, and maintaining a cleaner home for you and your loved ones!

Out of these 11 best furnace filters, here are our top three recommendations based on different factors:

Best for Pet Owners and Durability: FilterBuy MERV 8 Pleated AC Furnace Air Filter is an ideal option for its ability to capture pet dander and its lasting performance of up to three months.
Best for Allergen Protection: Filtrete Micro Allergen Defense HVAC Air Filter is a good option for those who prioritize allergen-blocking properties and keeping seasonal allergies under control.
Best for High Performance and Value: Aerostar MERV 13 Pleated Furnace Filters is the right choice for asthma sufferers and those who expect top-tier efficiency in capturing minute particles without breaking the bank.

In today's world, furnace filters are essential to maintaining a comfortable and healthy indoor environment. We hope our top three recommendations cater to your unique needs, whether you have pets, allergies, or simply want the best possible air quality in your home. Remember to change your filters regularly to ensure their effectiveness and to protect your heating and cooling systems. Breathe easy and enjoy the benefits of clean indoor air!