Why it matters
The Reair MERV 8 1-inch Washable Furnace Filter is a pleated furnace and air conditioner filter rated MERV 8.
MERV 8 is the common equipment-protection grade: it catches dust, lint, pollen and most pet hair with very little airflow restriction.
As general guidance, check a 1-inch filter monthly and change it every one to three months; deeper 4- and 5-inch filters usually last six to twelve months.
This listing is the 20x20x1 size; order by the size printed on your old filter's frame.
The listing claims machine washing and drying. Washable filters save on replacements, but they must dry completely before going back in, or the damp media can grow mold.
Who it's for, and who should skip it
Good fit if
- Everyday dust and equipment protection
- Homes that change filters on schedule
Look elsewhere if
- Smoke or fine-particle control
Pros and cons
Pros
- MERV 8
Cons
- Catches little of the finest smoke and dust
- Measure your slot: nominal and actual sizes differ
Limitations to weigh
- Specifications are the maker's or seller's own figures; check fit against your equipment's model number and the actual size.
Specifications
The bracket shows where each figure comes from.
| Model number | RA2020 | Retailer |
|---|---|---|
| MERV rating | 8 | Retailer |
Alternatives worth comparing
More hvac and furnace filters we cover
Final verdict
A solid choice for everyday dust and equipment protection. Confirm the model it fits before ordering.
Where to buy
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure