Furnace filter · 1-inch
Amazon Basics MERV 11 (1-inch)
A no-frills MERV 11 1-inch filter labeled with the real standard. Good everyday filtration with a gentler airflow profile than MERV 13.
Total cost of ownership
Checked yesterday- Per filter
- $8.40
- Replaced
- 4x/yr
- Annual cost
- $34/yr
Certifications
No third-party certification on an official database. Any performance claims are unverified.
Overview
The Amazon Basics MERV 11 (1-inch) is a 1-inch panel furnace filter rated MERV 11 on the standardized ANSI/ASHRAE 52.2 scale, which captures fine dust, pollen, and pet dander. It labels its true MERV with no proprietary scale. Replaced about 4 times a year, it runs roughly $34 per year.
By the numbers
- True MERV (ASHRAE 52.2)
- MERV 11
- Depth
- 1 inch (panel)
- Captures
- fine dust, pollen, and pet dander
- Replacement cadence
- 4x per year
- Per-filter price
- $8.40
- Annual filter cost
- $34/yr
- Rating standard
- self-rated to ASHRAE 52.2 (not AHRI-certified)
Strengths
- + Rating Honesty: 8.0/10
Watch-outs
- - Airflow Fit: 4.0/10
- - Practical Fit: 2.0/10
Who it is for
- · Allergy and pet households wanting strong everyday filtration (MERV 11-12)
How it scored
Verified Filtration
5.0/10 · 30%True ANSI/ASHRAE 52.2 MERV - the only standardized filtration rating. Higher MERV captures finer particles.
- +5MERV 11-12 AMERV 11 - Captures fine dust, pollen, and pet dander well (MERV 11-12).
Total Cost of Ownership
5.0/10 · 25%Computed annual filter cost vs the depth-class median. Cheap 1-inch filters replaced often can cost more than deep media.
- +5Annual filter cost vs class median A$33.60/yr (below class median) - Computed annual filter cost (price x replacements per year) scored against the depth-class median.
Rating Honesty
8.0/10 · 20%Does the brand print the true MERV, or hide it behind a proprietary MPR/FPR scale? MPR/FPR is not MERV.
- +8Labels true MERV, no proprietary scale AMERV printed plainly - Uses the standardized ANSI/ASHRAE 52.2 MERV rating with no proprietary marketing scale.
Airflow Fit
4.0/10 · 15%Depth vs MERV. A high-MERV 1-inch filter restricts airflow and can strain the blower; deep media at the same MERV does not.
- +4Moderate MERV in a thin panel BMERV 11 in 1" panel - Moderate MERV in a 1-inch panel balances filtration against airflow for most systems.
- ·Pressure drop not published Cno initial-resistance figure - The manufacturer publishes no initial-resistance figure; airflow impact is inferred from depth and MERV.
Practical Fit
2.0/10 · 10%Replacement cadence and reusability. Frequent swaps are a maintenance and cost burden.
- +2Frequent replacement B4x per year - Needs replacing every 1-3 months, a recurring cost and chore.
Related guides
This score is our opinion under our published rubric, not a statement of objective fact or a lab test of this product. We score what third-party certifications prove; absence of a certification means we found no verification, not that a product fails to perform. Last reviewed 2026-06-01. Scored under hvac-v1.0. Prices were last checked yesterday; the freshness chip above the cost panel shows the current state. See the methodology for how each rule fires.