6 Best AC Filters for Homes

In Home & Garden, Appliances by cerilleLeave a Comment

What are the best AC filters? Our team have tested a range of the best AC filters available below

Product reviews of the best ac filters

If you’re looking for a suitable AC filter for your home, office, or car, then you come to the right place.

We tested 12 AC filters that are popular on the market and our selection includes options from the affordable to the most efficient, and are capable of removing the smallest size of airborne particles.

We compare each brand of air filter them based on several factors including size, thickness, and MERV rating.

Consequently, our top recommendation is the [Nordic Pure 18x20x1M12-2]  because it has the best MERV rating for your household.

It can capture the smallest contaminants up to 1.0 micron. Read below for the full description of our comparisons and reviews of the best AC filters.

Nordic Pure 18x20x1M12-2 AC Furnace Filter Review – 100%


The Nordic Pure 18x20x1M12-2 offers superior air filtration ability.

It’s made of electrostatically charged synthetic materials to trap the most airborne particles, making this a good air purifier in your home.

These airborne particles include dust, bacteria, and pet dander.

With a MERV rating of 12, this filter can trap about 90% of 1.0 to 3.0-micron contaminants.

The treated synthetic filter media stops the development of bacteria or mold which results to a more pleasant living space. This package includes two pieces of air filters and can last up to three months.

  • Has a high MERV rating of 12
  • Very efficient in capturing airborne particulates in your home
  • Has a good price for its value
  • Can remove allergens and smoke
  • Stops the growth of bacteria and fungi
  • Has a weak frame construction
  • Needs to be replaced constantly every one to three months

Ultrafine Particle Reduction AC Furnace Air Filter – 88%


The Filtrete Ultrafine Air Filter is made with Filtrete Band 3-in-1 technology from 3M to capture unwanted airborne particles to deliver better air quality.

This air cleaner can trap micro-particles including pollen, exhaust, and bacteria. Compare to non-electrostatic pleated filters, this air filter performers seven times better in capturing 0.3 to 1.0-micron particles.

This electrostatic air filter receives a microparticle performance (MPR) rating of 2800.

This makes it very efficient in capturing small airborne materials that are less than 1 micron. For best performance, replace this filter every one to three months.

  • Can capture ultrafine airborne particles
  • Can eliminate dust, pollen, and virus very well
  • Cleans the air quite efficiently
  • Has a fair price for two pieces of high-efficiency filters
  • Has a good construction
  • The filter pleats seem to be too close to provide a good airflow
  • Not meant for home HVAC systems
  • Easily clogs up

Web Eco Filter Plus Adjustable Air Filter Review – 88%


The Web Eco Filter is a washable reusable AC filter that can be used up to 10 years.

It’s built with an adjustable frame to fit standard sizes from 14 x 20 inch to 20 x 25 inch. It can trap pollen, dust, and small airborne particles quite well.

The assembly can be a bit tricky if you’re alone so we recommend that you ask someone to help you.

It’s definitely a three-hand job to prevent the pieces from falling apart. Since you’ll be using this filter up to 10 years, you’re doing good a good favor for the environment because you put less waste on the landfill.

  • Environmentally friendly
  • An affordable choice
  • Can be washed and reused up to a decade
  • Comes with an adjustable frame
  • Needs to be cleaned frequently
  • Can’t trap microscopic particles

FilterBuy FB Gold Pleated AC Furnace Air Filter – 88%


The FilterBuy FB Gold is a pleated air filter that is ideal for home or commercial use. It comes in a pack of four filters that can fit any standard or AC filter.

With a MERV rating of 11, this filter can offer excellent filtration to your living space.

This filter is more effective than a typical fiberglass filter. It can remove dust, pet dander, and pollen. You can use this filter up to three months.

  • Has an excellent filtration ability
  • Ideal for pet owners and smokers
  • Can remove small airborne particles
  • The pleats can trap airborne particles really well
  • Easy to install
  • The listed size has a large discrepancy on its actual dimensions
  • Flimsier than Filtrete

De’Longhi AC100-150 AirPurifier Replacement Filter – 80%


The De’Longhi AC100-150 is a 2-in-1 air filter. It’s both a HEPA filter and a carbon filter.

This air filter is approved by the British Allergy Foundation to eliminate dust and other allergens.

As a HEPA filter, it can remove airborne particles as small as 0.3 micrometers in diameter.

It can also remove dangerous gases and odors being with active carbon. Together, it forms an effective air purifier for your home.

  • Removes very fine particles
  • Filters out the harmful odor and gas molecules
  • A good 2-in-1 filter
  • Easy to install and use
  • The washable pre-filter needs to be cleaned frequently
  • More expensive as compared to similar products

VARANDA Car Cabin Air Filter Replacement Review – 70%


The VARANDA Car Cabin Air Filter cleans the air inside the vehicle. It contains carbon and soda to eliminate bad odors and produce fresh air.

Using this filter can improve the performance of your HVAC as it makes it more efficient.

This carbon filter can remove 98% of dust and pollen.

It can also protect the engine from any damaging particles and extend its lifespan. This package includes two car cabin air filters.

  • Cleans the air inside the car really well
  • Has a great price for its value
  • Can extend the lifespan of your engine
  • Easy to install
  • Can’t eliminate very fine particles
  • Only compatible with a few car models


Frequently asked questions

What is AC Filters?

Air conditioner filters or A/C filters are important to the safety and efficiency of your air conditioning system.

They keep the dust at bay and deliver clean, cool air for the occupants.

If they don’t work properly, they may cause leaks or other damage to your home or office.

What are the advantages and disadvantages of AC Filters?

High performance air filters can save energy cost as they can cool your home more efficiently.

They can filter dust, pollen, and other contaminants in the air giving you a better airflow.

When you pair them with a humidifier, you have the best combo in fighting colds, allergies, and other air problems.

When these filters get clogged, they can cause worse problems (like higher energy consumption, frozen evaporator coils, and insufficient heating or cooling).

It can also affect your health as more dust and debris are being re-circulated inside your home. Hence, replacement is a must in every one to three months.

What’s the approximate price range for AC Filters?

The price of an AC filter can range from £10 to £100 or even more.

What should I look for when choosing an AC Filters?

When buying an AC filter, look for the thickness. The thicker the filter, the better the performance.

Always make sure that the replacement filter is the same with your existing filter.

If your existing filter doesn’t show the measurements, measure the dimensions yourself.

Another thing to look is the minimum efficiency reporting value (MERV) rating.

A good indoor air filter for window AC units should have a MERV rating between one to four.

A rating of five to eight offers a good household air filtration while nine to 12 offers excellent filtration.

What is the best filter for air conditioner? Why is it the best?

The best filter for AC is the Nordic Pure because it has a 12 MERV rating, meaning that it delivers superior air filtration ability.

It’s also electrostatically charged to capture airborne contaminants in your home.

What are the best washable ac filters?why is it the best?

The best washable air conditioner filter is the Web Eco Filter Plus Adjustable Air Filter because it can be washed and reused up to 10 years.

The adjustable frame also fits standard filter sizes from 14 x 20 inch up to 20 x 25 inch.

What size ac filter do I need?

Ideally, you need an AC filter to fit snugly on the frame. If not, unfiltered air will pass through the opening and the filter will be deemed useless. The size of the filter should be slightly smaller than the size of the frame.

Are ac filters recyclable?

No, they aren’t recyclable. Professionals recommend changing your air filter at home at least every three months.

If you’re following this advice, you’re getting contact with filthy, dusty filters several times annually.

The safest way is to carefully put them in the trash with the frame intact.

What’s the best AC filter for the car? Why is it the best?

The best air filter for the car is the VARANDA Car Cabin Air Filter Replacement because it contains carbon and soda to fight against bacteria.

It also improves the performance of the HVAC unit.

What is the best way to clean ac filters?

You can wash the filter with warm water or vacuum it. If it’s too dirty, put some mild household detergent in the warm water.

You can remove the odor with some little baking soda on the water before rinsing. Once it’s clean, dry it thoroughly.

Why should I clean my air conditioner filter?

A dirty central air conditioner filter can obstruct the airflow and deteriorate the performance of your air conditioning unit.

With an inefficient unit, your energy cost will increase.

The air that will also pass through the filter may carry dirt and impair the evaporator coil or worse your health.

What is the best ac filters for home? Why is it the best?

One of the best HVAC air filters for home is the Filtrete Ultrafine Particle Reduction AC Air Filter because it’s very effective in reducing dust, pollen, and bacteria in your home.

It can even trap ultrafine particles in the air.

What is the best reusable home air filter? Why is it the best?

The best reusable air filter for home is the WEB ECO Filter because it can be reused up to 10 years.

That’s the longest lifespan we have met so far.

It’s also highly efficient in capturing dust and minute particles in the air.

What’s the best electrostatic air filter? Why is it the best?

The best electrostatic air filter is the Nordic Pure because it features a synthetic filter media that keeps the growth of bacteria or mold.

It will trap more than 90% of micron contaminants.

This results in a healthier air flow.

Why is the Permanent Electrostatic Washable filter good for your home?

Washable air filters purify the air through static electricity.

At a reasonable price, the Permanent Electrostatic Washable filter minimizes dust and emits no harmful ozone.

It also doesn’t need any replacing because you only need to wash it when it gets dirty.

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