Choosing an air filtration indoor air quality replacement filter starts with the format your system uses-not simply the lowest number on the price tag. These four options span distinct nominal sizes, two filtration ratings, and pack quantities from two to six. Once the required dimensions are established, the practical decision is whether a MERV 8 multi-pack or the Honeywell MERV 11 option better suits the replacement you need.
Quick take
- The listed prices run from USD 18.95 to USD 33.99, a USD 15.04 spread.
- HDX, the Durable HVAC filter, and Simply are MERV 8 choices; the Honeywell FC100A1037 is rated MERV 11.
- Honeywell is listed in used condition. The other three filters are listed new.
- Pack quantity is a meaningful divider: Honeywell is a 2-pack, HDX and the Durable HVAC filter are 3-packs, and Simply is a 6-pack.
Listed price comparison
| Filter | Listed price | Price bar |
|---|---|---|
| HDX 14x14x1 MERV 8 Pleated Filter | USD 18.95 | |
| Durable HVAC 18x24x1 MERV 8 Pleated Filter | USD 19.15 | |
| Honeywell FC100A1037 20x25x4 MERV 11 Filter | USD 33.99 | |
| Simply 12x12x1 MERV 8 Filter | USD 23.99 |
Decision matrix
- Format-first choice: Each option names a different nominal replacement size, so the size requirement immediately narrows the field.
- Filtration-rating choice: Pick Honeywell when the MERV 11 designation is the priority. The HDX, Durable HVAC, and Simply alternatives are all identified as MERV 8.
- Quantity-first choice: Simply has the six-filter format, while HDX and the Durable HVAC option provide three filters each. Honeywell provides two.
- Condition-first choice: The Honeywell FC100A1037 is the sole used listing; HDX, Durable HVAC, and Simply are listed new.
Product notes
HDX 14x14x1 MERV 8 Pleated Filter
Choose the HDX filter when a 14x14x1 replacement is needed and a three-filter MERV 8 format fits the replacement plan. Its description identifies use in furnace, AC, and HVAC systems, with electrostatic synthetic media designed to capture dust mites, pollen, lint, and pet dander. The cardboard frame and stated three-month filter life make it a straightforward recurring-replacement option. It also carries the lowest listed price of the four at USD 18.95. The limitation is the MERV 8 rating: shoppers seeking the MERV 11 designation will need the differently sized Honeywell option.
Durable HVAC 18x24x1 MERV 8 Pleated Filter
The Durable HVAC filter makes sense for an 18x24x1 requirement where a three-pack is preferable. It is described with a moisture-resistant frame, wire-supported pleated media, and electrostatic charging intended to attract and trap dust, dust mites, pet dander, and pollen. At USD 19.15, its listed price sits close to the HDX option while serving a distinctly different nominal size. Its stated actual measurements are 17.75 inches wide, 23.75 inches high, and 0.75 inches deep. The tradeoff is its MERV 8 designation rather than Honeywell's MERV 11 designation.
Honeywell FC100A1037 20x25x4 MERV 11 Filter
The Honeywell FC100A1037 is the clear fit for a 20x25x4 replacement when the MERV 11 rating is the deciding feature. This two-pack is described as a whole-house furnace and AC filter built with pleated fabric media and a cardboard frame. The product description also identifies compatibility with Honeywell and select Aprilaire and Space-Gard models. At USD 33.99, it is the highest listed-price option in the comparison. Its most important limitation is condition: this Honeywell listing is marked used, unlike the other three new filters.
Simply 12x12x1 MERV 8 Filter
Simply is the quantity-led pick for a 12x12x1 furnace filter requirement because the listed option contains six MERV 8 filters. The description gives actual measurements of 11.75 inches long, 11.74 inches wide, and 0.75 inches thick, and identifies a white filter made in the United States. Its USD 23.99 listed price falls between the two lower-priced three-packs and the Honeywell two-pack. The limitation is its stated furnace application. HDX, by comparison, explicitly names furnace, AC, and HVAC-system use, though it is offered in a different 14x14x1 format.
Final recommendation by use case
- Lowest listed price and a 14x14x1 replacement: choose the HDX filter at USD 18.95.
- An 18x24x1 replacement: choose the Durable HVAC 3-pack.
- A 20x25x4 replacement: choose the Honeywell FC100A1037.
- A 12x12x1 furnace replacement: choose the Simply six-pack.
