Amazon Basics 20x20x1 MERV 11 Air Filter, 6-Pack: What to Know Before You Buy
This post contains affiliate links. As an Amazon Associate, we earn from qualifying purchases at no extra cost to you. Learn more.
Key specs
- Brand
- Amazon Basics
- Size
- 20x20x1 (actual 19.75 x 19.75 x 0.75)
- Rating
- MERV 11
Replacing your HVAC filter on schedule is one of the easiest ways to keep your system running efficiently and cut down on household dust. This Amazon Basics six-pack gives you a year's supply of 20x20x1 MERV 11 electrostatic filters in one box.
Who it's for
Homeowners and renters with a 20x20x1 return or furnace slot who want better filtration than basic fiberglass or MERV 8 filters, especially households with pets, allergies or lots of dust. People with older or weaker HVAC systems should check their manufacturer's recommendations first, since denser filters can restrict airflow on some units.
What we liked
- Better filtration: MERV 11 captures finer particles such as pet dander, pollen and fine dust than typical MERV 8 filters.
- A year's supply: six filters cover roughly 12 months if you change them every 60 to 90 days.
- Sturdy build: a beverage-board frame and wire mesh support help it hold its shape in the slot.
What could be better
- Higher MERV ratings can restrict airflow on some older systems.
- The actual size is 19.75 x 19.75 x 0.75 inches, which is normal for filters but can confuse first-time buyers.
Key specs, explained
- MERV 11: the Minimum Efficiency Reporting Value scale runs from 1 to 16; MERV 11 is a popular balance of filtration and airflow for homes.
- Electrostatic media: charged synthetic fibers attract and hold particles as small as 3 microns.
- 20x20x1 nominal size: filters are labeled by nominal size; the actual dimensions are slightly smaller so they slide into the slot.
Frequently asked questions
Q: How often should I change them? Every 60 to 90 days, or more often with pets or during heavy-use seasons.
Q: Is MERV 11 OK for my system? Most modern residential systems handle MERV 11 fine; check your HVAC manual if you're unsure.
Q: Why is the actual size smaller? That's standard. Filters are sold by nominal size, and actual dimensions are slightly smaller so they fit.
Should you buy it?
A cost-effective way to stock up on mid-grade HVAC filters. A good upgrade for most homes, especially with pets or allergies.
Buy on Amazon