18" x 24" x 4" Merv 12 Air Filter
![]()
![]()
Measure Twice for the Perfect Match:
Actual size: 17 1/2" x 23 3/8" x 3 5/8"
Protect your home and breathe easy with PeakAire's MERV 12 air filter, designed to trap and remove common household contaminants, including lint, dust, pollen, pet dander, and mold spores. Perfect for families with pets, allergy sufferers, or anyone looking to maintain cleaner indoor air, this high-efficiency filter captures up to 95% of airborne particles.
Superior Filtration: Rated MERV 12 for powerful filtration of particles like dust, pollen, and pet dander, as well as airborne mold spores that can affect indoor air quality.
Enhanced Home Comfort: Enjoy cleaner, fresher air while reducing dust accumulation on surfaces and in your HVAC system.
Long-Lasting Performance: Durable construction with a high dust-holding capacity means fewer filter changes and consistent airflow.
HVAC systems may vary. Please check with your local HVAC expert for your individualized filter needs.
Change every 90 days.
Made in the USA.
Try These Air Filters for Even Better Protection
Breathe Easy
Protecting families from common allergens. Learn more about how our filters are rated.
Frequently Asked Questions
How often should I replace my air filter?
It is generally recommended to replace your air filter every 90 days. However, if your household includes multiple pets, smokers, or experiences heavy use, you should inspect and possibly replace the filter more frequently. If you're upgrading from a lower MERV-rated filter or a fiberglass filter, it's a good idea to check the new filter after the first 30 days of use.
How do I replace my air filter?
To replace your air filter:
1. Locate your furnace or HVAC filter.
2. Turn off the HVAC system.
3. Note the airflow direction indicated on the old filter.
4. Carefully remove and dispose of the old filter.
5. Install the new filter with the arrows pointing in the same direction.
6. Record the installation date to keep track of replacement intervals.
Enjoy cleaner, healthier indoor air!
What size filter do I need?
The nominal size (e.g., 20 x 20 x 1) is usually printed on the side of your current air filter. If your previous filter isn't available, measure the intake vent to determine the correct size.
• Nominal size refers to the rounded dimensions used for
product labeling
• Actual size is slightly smaller and reflects the precise measurements of the filter (e.g. 19.5" x 19.5" x 0.75'").
Most HVAC filters are labeled by their nominal size, which corresponds to standard intake vent dimensions.
Can I use your filters with my current filter brand?
Yes! Our filters are compatible with most major brands. Just make sure to compare the exact dimensions of your current filter with ours before purchasing.
What does MERV signify?
MERV, or Minimum Efficiency Reporting Value, is a rating that indicates the effectiveness of an air filter in removing or trapping particles from the air. This system, developed by the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) in 1987, establishes air filter testing standards.
Is a MERV 13 filter suitable for my needs?
A MERV 13 filter is highly effective, but it is also more restrictive. It is advisable to consult with your local HVAC technician to determine if a MERV 13 filter is the optimal choice for your system.