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18x36x1A – Merv 13

18x36x1A – Merv 13
AC Furnace Air Filter
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Product Description

Filter Size: 18x36x1A

Actual Size: 18x36x1

Actual Size Fraction : 18x36x1

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Shop 18x36x1A Air Filters Online

Custom Filters Direct is the name you can count on when looking to buy the best quality 18x36x1A air filters online. Our electrically charged air filters ensure dirt, dust, and other irritants are removed from the air before it enters your home or business environment.

All our air filters are made in our own factory in the USA, helping our customers get the best quality products at pocket-friendly prices. We strictly follow the HVAC industry standards and use the finest quality material to ensure air filters withstand harsh conditions.

Custom Filters Direct 18x36x1A furnace and AC air filters are constructed using the highest-quality synthetic material which makes our air filters almost 20 times more efficient in trapping harmful contaminants than ordinary filters. The tight mesh weaving ensures the airflow is clean and free of harmful particles.

Is It Time to Change My Air Filters?

Over time, the dirt and dust particles accumulate on the surface of the air filter and block the pores of the filters. When this happens, the flow of clean air is reduced and puts a strain on the HVAC unit. It may cause high energy bills and costly repairs.

For optimal performance, we recommend you to change your filters every 60-90 days. You can replace your filters every 30 days during the peak seasons or if you have pets at home.

Choose the Right MERV Rating


MERV 8 air filters capture common airborne contaminants 3-10 microns in size including dust mites, bacteria, and allergies. These filters are ideal for most common residential applications.


These filters capture more than 85% of unhygienic particle contaminants in the airstream. We recommend MERV 11 filters for both residential and commercial uses.


MERV 13 air filters capture more than 90 percent of airborne contaminants 3.0 to 10.0 microns and even also capture 75% of particles 0.3 to 1.0 in size. These filters are ideal for places where superior air filtration is required.

Choose Your 18x36x1A Air Filters Delivery Schedule

Replacing 18x36x1A your air filters frequently ensures you have cleaner air, a lower energy bill, a last longer HVAC system, and better health. Custom Filters Direct offers an auto-delivery option on 18x36x1A air filters. This subscription service is designed to ensure you replace your air filters on time. With our auto-delivery service, you can choose a custom delivery frequency to suit your need. Our filters come in packs of 4, 6, 12, and more.

We also offer one-time delivery to try our air filter and subscribe to our auto-delivery later. Custom Filters Direct also offers huge discounts on bulk orders of 18x36x1A air filters. So, place your order now!