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PUREFLOW
PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter

PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter

Best price now

$66.89at WalmartObserved at 9:52 PM

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Our take on the PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter

The PUREFLOW Odor Control is a 20x20x4 residential furnace filter rated MERV 13, with activated charcoal for odor and electrostatic media for fine dust. The 4-inch depth gives it more pleated surface than a 1-inch filter, so it holds more dust before airflow drops. At $66.89 at Walmart as of November 7, 2026, it is the only new price listed, so there is no recent range to compare against.

Best forHomes with pets, cooking odors or smoke4-inch filter cabinets needing MERV 13Allergy-sensitive householdsLonger change intervals than 1-inch filters
Pros
  • MERV 13 captures fine particles like pollen and smoke
  • Activated charcoal targets odors, not just dust
  • 4-inch depth means fewer changes per year
  • Electrostatic media helps grab small particles
  • Fits standard 20x20x4 filter slots
Cons
  • Single filter, no multipack discount
  • No written warranty
  • Higher airflow resistance than MERV 8 filters
  • Only one store lists it, so price shopping is limited

PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter prices at every store

  • WalmartNew

    In stock

    $66.89Observed at 9:52 PM
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PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter price history

Lowest price we've seen: $66.89 on Nov 8 at Walmart. Tracked across 1 store since Nov 8.

Specifications

Air filter size
20 x 20 x 4Source
Contaminants removed
DustSource
Brand
PREMIUM GUARDSource
Features
ElectrostaticSource
Microparticle performance rating
99Source
Thickness
4.3 inSource
Material
activated charcoalSource
Rec. use
ResidentialSource
Dimensions
20.30 x 20.30 x 4.30 inSource
Count
1Source
Product net content parent
1 EachSource
Model
HV20204Source
Has written warranty
NoSource

Questions and answers

Is MERV 13 too restrictive for my furnace?
Most modern blowers handle MERV 13 in a 4-inch filter, but older or undersized systems may lose airflow. Check your furnace manual's maximum MERV rating before buying.
How often should I replace it?
A 4-inch MERV 13 filter typically lasts 3 to 6 months. Homes with pets, heavy cooking or open windows need the shorter end of that range.
Does the charcoal really remove odors?
Activated charcoal adsorbs some cooking, pet and smoke odors, but the amount in a furnace filter is modest. Expect a reduction, not elimination.
Will it fit a 20x20x4 slot exactly?
Nominal size is 20x20x4, but actual dimensions are about 20.3 x 20.3 x 4.3 inches. Measure your cabinet to confirm it clears the rails.
Is $66.89 a good price?
It is the only new price listed as of November 7, 2026, so there is no range to judge against. Compare with other MERV 13 4-inch filters before deciding.
Where is the PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter cheapest?
At Walmart, for $66.89, as of our latest check.

Stores we've priced the PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter at

  • Walmart deals and prices

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