Furnace filter · 1-inch
3M Filtrete MPR 1500 (Allergen)
Marketed as 'MPR 1500'; the standardized rating is MERV 12 (confirmed against 3M's own MPR-to-MERV chart). A solid 1-inch filter, but the box leads with a scale only 3M uses.
Bottom line
In our scoring the 3M Filtrete MPR 1500 (Allergen) earns 4.6/10, a weak result. On the data, it is true MERV 12 on the ANSI/ASHRAE 52.2 scale. Replaced 4x a year it runs about $74 a year, a typical annual filter cost. Its weakest area in our scoring is practical fit (2.0/10).
Where to buy
No buy link on this one: it scored Limited under our rubric, and we only link products we would shortlist ourselves.
Total cost of ownership
Checked 38 days ago- Per filter
- $18.49
- Replaced
- 4x/yr
- Annual cost
- $74/yr
Certifications
No third-party certification on an official database. Any performance claims are unverified.
Filters only protect you on their swap schedule. Get an email reminder when this one is due - one note around swap time, nothing else.
Overview
The 3M Filtrete MPR 1500 (Allergen) is a 1-inch panel furnace filter rated MERV 12 on the standardized ANSI/ASHRAE 52.2 scale, which captures fine dust, pollen, and pet dander. It markets a proprietary MPR 1500 rating but also prints the true MERV. Replaced about 4 times a year, it runs roughly $74 per year.
By the numbers
- True MERV (ASHRAE 52.2)
- MERV 12
- Proprietary rating
- MPR 1500 (MERV also shown)
- Depth
- 1 inch (panel)
- Captures
- fine dust, pollen, and pet dander
- Replacement cadence
- 4x per year
- Per-filter price
- $18.49
- Annual filter cost
- $74/yr
- Rating standard
- self-rated to ASHRAE 52.2 (not AHRI-certified)
Strengths
- No standout strengths in our scoring.
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 12 - 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$73.96/yr (below class median) - Computed annual filter cost (price x replacements per year) scored against the depth-class median.
Rating Honesty
5.0/10 · 20%Does the brand print the true MERV, or hide it behind a proprietary MPR/FPR scale? MPR/FPR is not MERV.
- +5Prints true MERV but markets a proprietary scale AMPR 1500 shown with MERV - Prints the real MERV but leads with a proprietary MPR/FPR number, which is not a standardized rating.
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 12 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.
FAQ
- What MERV rating is the 3M Filtrete MPR 1500 (Allergen) really?
- Its true rating on the standardized ANSI/ASHRAE 52.2 scale is MERV 12; the MPR 1500 on the box is a proprietary scale, not MERV. The seller also prints the real MERV next to it.
Compared head-to-head
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 2026-06-05. Scored under hvac-v1.0. Prices were last checked 38 days ago; the freshness chip above the cost panel shows the current state. See the methodology for how each rule fires.