Filtrete 20x25x1 AC Furnace Air Filter, MERV 5, MPR 300, ... | LMK.today
Filtrete 20x25x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 19.69x24.69x0.81 in)

Filtrete 20x25x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 19.69x24.69x0.81 in)

by Filtrete
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(180802 reviews)

Overview

The Filtrete 20x25x1 MERV 5 (MPR 300) furnace and AC air filter is a 1-inch pleated electrostatic disposable filter sold in a six-pack. Designed for routine HVAC maintenance, it captures common household particles such as lint, dust, and dust-mite debris while allowing efficient airflow through most furnaces, air handlers and return grilles. Each filter is sized to the nominal 20x25x1 slot (actual dimensions 19.69 x 24.69 x 0.81 in) and is intended for about a 3-month service life under typical conditions. This product is best for households wanting a budget-friendly, low-resistance option to keep general indoor dust under control without stepping up to higher-MERV, higher-restriction filters.

Key Features

  • Dimensions: Nominal 20 x 25 x 1 in; Actual size 19.69 x 24.69 x 0.81 in — verify your filter slot before purchase.
  • Filtration ratings: MERV 5 and MPR 300 — designed to capture lint, household dust, and dust-mite debris while maintaining airflow.
  • Media type: Pleated electrostatic filter media (disposable) — improves particle capture over flat fiberglass alternatives.
  • Pack size & lifespan: 6 filters per pack with an average recommended replacement interval of 3 months under normal conditions.
  • Compatibility: Fits most standard residential furnaces, air conditioners and HVAC systems that accept a 1-inch filter; outperforms washable and non-electrostatic options.

Pros & Cons

Pros

  • Affordable six-pack keeps multiple filters on hand and lowers per-filter cost.
  • Pleated electrostatic media improves capture of lint and household dust compared with flat fiberglass filters.
  • Low MERV (MERV 5) balances particle capture with minimal airflow restriction for most HVAC systems.
  • Convenient 3-month recommended replacement interval for routine maintenance.
  • Actual dimensions listed (19.69 x 24.69 x 0.81 in) help ensure a proper fit in nominal 20x25x1 slots.

Cons

  • MERV 5 (MPR 300) is not sufficient for capturing fine particles like smoke, many pollen or ultrafine aerosols—limited allergy protection.
  • Only 1-inch thickness means lower dust-holding capacity than thicker (2" or 4") filters; replacement is more frequent under dusty or pet-heavy conditions.
  • Disposable only — not washable or reusable, so ongoing replacement cost accumulates.
  • Bulk of a six-pack takes storage space and some retailers may limit return options once box opened.

Recommendations

  • Homeowners who want an economical, no-frills filter for general dust control and HVAC protection.
  • Apartments or rental properties where landlords prefer inexpensive, easy-to-replace filters on a set maintenance schedule.
  • Homes without severe allergy or smoke concerns that prioritize airflow and lower system strain over high-efficiency particle removal.
  • Purchase as a backup or seasonal supply for households that change filters quarterly (spring, summer, fall, winter check-ups).

Frequently Asked Questions

Filtrete recommends changing 1-inch pleated filters about every 3 months under typical household conditions. Replace more frequently (every 1–2 months) if you have multiple pets, smokers, high dust, or heavy HVAC use.

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