Is MERV 13 too restrictive for my furnace?

MERV 13 is denser than the MERV 8 filters many systems ship with. Most modern residential blowers handle it, but check your system's manual or ask an HVAC tech if your unit is older or airflow is already weak.

How often should I change it?

Most homes should replace a MERV 13 filter every 60 to 90 days. Homes with heavy shedding pets or lots of cooking may need a change every 30 to 60 days.

Does the charcoal layer really remove odors?

It helps with light cooking, pet and smoke odors moving through the return. It is not a whole-home purifier, and the charcoal effect fades before the filter is fully loaded.

What size is this filter exactly?

It is a nominal 16x25x1 inch filter, the common size for residential return grilles. Measure your old filter before ordering, since actual dimensions can run slightly under nominal.

Is the 2-pack a good deal?

At $75.34 at Walmart as of November 7, 2026, that is about $37.67 per filter. Compare against other MERV 13 2-packs, since only one store currently lists a new price.

Will it fit a 16x25x1 slot in my AC?

Yes, it is made for standard 16x25x1 return grilles in furnaces and air conditioners. Confirm the slot depth allows a 1-inch filter with the media frame.

What do buyers say about the PUREFLOW Home Furnace Air Filter 16x25x1 MERV-13 (2-Pack)?

Rated 4.7 out of 5 from 18 ratings. Buyers like: Does a great job limiting extras from the air in the house; Well made; outshines top-tier filters from box stores in side-by-side comparison; Best furnace filter ever used. Common complaints: Cabin air filters ordered alongside were not packed as well and suffered damage in shipping.

Where can I buy the PUREFLOW Home Furnace Air Filter 16x25x1 MERV-13 (2-Pack)?

2 stores we checked sell it, including Walmart, PUREFLOW AIR.

PUREFLOW Home Furnace Air Filter 16x25x1 MERV-13 (2-Pack)

Q: Where is the PUREFLOW Home Furnace Air Filter 16x25x1 MERV-13 (2-Pack) cheapest?

At Walmart, for $75.34, as of our latest check.

Best price now

$75.34at WalmartObserved at 9:51 PM

Prices are checked against each store and labelled with when.

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What reviewers say

4.7 / 518 ratings

Buyers rate it 4.7 out of 5 from 18 ratings and describe it as well made and effective at cutting dust and odors. Several say it outperformed top-tier box-store filters in side-by-side use.

What people mention

FiltrationPraisedBuyers say it does a great job limiting dust and extras in the air.
Build qualityPraisedOwners call it well made and a quality product like other Pureflow filters.
Value vs box storesPraisedBuyers say it outshines top-tier box-store filters in side-by-side comparison.
LayersPraisedBuyers like the four layers of filtration technology.

About the PUREFLOW Home Furnace Air Filter 16x25x1 MERV-13 (2-Pack)

PUREFLOW® Ultra+ Home Air Filters deliver premium air filtration for homes that demand high-performance HVAC protection. Featuring MERV 13 filtration with a high-grade layer of activated charcoal, Ultra+ is designed to capture fine airborne particles while helping manage common household odors—supporting a fresher indoor environment and consistent HVAC performance.

• MERV 13 FILTRATION PERFORMANCE. PUREFLOW Home Air Filters are designed to capture dust, pollen, pet dander, lint, smoke, fumes, and other fine airborne particles for higher-efficiency home air filtration.

• HELPS MANAGE HOUSEHOLD ODORS. Built with an activated charcoal layer to help reduce common indoor odors from cooking, pets, smoke, and everyday household activity.

• SUPPORTS CLEANER INDOOR AIR. Multi-layer filtration media helps reduce particles moving through your HVAC system, making these filters a practical choice for homes with pets, kids, guests, or higher daily activity.

• BALANCED AIRFLOW DESIGN. Engineered to support consistent airflow through your residential furnace, air conditioner, or HVAC system while helping maintain efficient heating and cooling performance.

• ADVANCED FILTER MEDIA. High-efficiency MERV 13 construction captures smaller airborne particles than many standard filters, while also helping protect your HVAC system from dust buildup.

What buyers say

Buyers like

Does a great job limiting extras from the air in the house
Well made; outshines top-tier filters from box stores in side-by-side comparison
Best furnace filter ever used
Seems to be a quality product like other Pureflow products
Likes the four layers of filtration technology
Likes that filters can be bought in packs of two

Buyers complain about