28x30x2 Air Filters
Actual size: 27.5 x 29.5 x 1.75 inches
28x30x2 description
Nominal size
28 x 30 x 2 inches
Frame type
Rigid cardboard
Actual size
27.5 x 29.5 x 1.75 inches
Suitable for
Return air grilles, wall vents
Thickness
2 inches
Application
Residential use
Fast & free shipping
Processed quickly, ships fast, free for all orders
Made in the USA
Premium quality products crafted right here at home
Money-back guarantee
Return your items within 30 days and get a full refund
All sizes available
Find your perfect fit with our complete size range
MERV rating comparison
Recommended for
Comparable ratings
Filtration efficiency
Dust mites
10+ microns
Pollen
10-100 microns
Pet dander
5-10 microns
Lint and fabric fibers
10+ microns
Mold spores
3-10 microns
Fine dust
1-3 microns
Smoke particles
0.3-1 micron
Smog and fine particles
0.1-1 micron
Bacteria
0.3-5 microns
Virus carriers
0.3-1 micron
Odors and gases
Molecular level
VOCs
Molecular level
Cooking odors
Molecular level
Learn more
MERV 8 filters
Better air quality,
homes with allergies, pets
FPR 7,
MPR 1000-1200
MPR 1000-1200
95% of common particles
Superior air quality, health concerns, allergies
FPR 10,
MPR 1500-1900
MPR 1500-1900
98% of common particles
Odor control, cooking smells, pet areas
FPR 5 + Carbon,
MPR 600 + Odor
MPR 600 + Odor
90% of common particles
Customer reviews
How to find your air filter size?
Check the label on your current filter or use a tape measure to get the exact length, width, and depth before selecting your size.
Nominal size
Nominal size is what you normally see printed on the label. This is usually a rounded size which is often not the true size of your filter.
Actual size
Actual size is the true size of the air filter, usually written in smaller font below the nominal size.
Measuring
Measure your current air filter or the length, width, and depth of the opening slot to get the actual size. Round it up to the nearest whole inch to get the nominal size.
How to install 28x30x2 air filter?
Installing 28x30x2 air filters couldn't be easier. Just make sure to align the arrow printed on the side with the airflow direction!
1
Remove the air filter from the package
2
Locate the arrow and point it in the direction of the fan
3
Slide the filter in to the slot of the central unit
4
For return grills, insert the filter into the grill, pointing the arrow inwards
When to replace your air filter?
For best indoor air quality, we recommend you change your filters regularly at different times depending on your situation.
-
Asthma or allergies
Every 6 weeksReplace your air filter every 6 weeks to minimize the circulation of bacteria and allergens in the air.
-
Pets
Every 2 monthsReplace air filters every 2 months to reduce odors as well as pet dander and hair buildup in your system.
-
Young children
Every 2-3 monthsReplace your air filter every 2-3 months to reduce airborne particles and maintain cleaner indoor air.
Stay On Schedule And Save 5%
Keeping your air filter replacement schedule in mind can be challenging to say the least. Make your life easier with Filter King's auto delivery.
- Get 5% off your order
- Choose your delivery frequency
- Change or cancel any time
Frequently asked questions
- How often should I replace my 28x30x2 air filter?
- What happens if I use the wrong size air filter?
- Can I cut a larger filter to fit my 28x30x2 filter slot?
- Are expensive 28x30x2 air filters worth the extra cost?
- Can I run my HVAC system without a 28x30x2 filter temporarily?
- Will a MERV 13 28x30x2 filter restrict airflow too much?
Frequently Asked Questions (FAQs)
How often should I replace my 28x30x2 air filter?
You should replace most 28x30x2 air filters every 30 to 90 days depending on your specific needs and circumstances. In households with asthma or allergies, replace your air filter every 6 weeks. If you have pets, replace it every 2 months. If you have young children, replace it every 2 to 3 months.
What happens if I use the wrong size air filter?
Using the wrong size air filter can lead to poorer air quality and cause problems for your HVAC system. If the air filter size is too small, unfiltered air can bypass the filter and allow for dust to enter your HVAC system.
Can I cut a larger filter to fit my 28x30x2 filter slot?
No, never cut air filters to fit your filter slot if you’ve ordered the wrong size. Cutting damages the filter frame and media, creates gaps for air bypass, and reduces filtration effectiveness. If you've ordered the wrong size, Filter King offers a 30-day money back guarantee, so you can easily return or exchange your filter for the correct size.
Are expensive 28x30x2 air filters worth the extra cost?
In many cases it may be worth the extra cost, although it largely depends on your specific needs and circumstances. Higher-quality 28x30x2 filters often provide better filtration, last longer, and protect your HVAC system more effectively, meaning that the investment pays off through better air quality and reduced system maintenance costs.
Can I run my HVAC system without a 28x30x2 filter temporarily?
No, never run your HVAC system without a filter, even temporarily. Running it without a filter allows dust, debris, and particles to enter your system, which can lead to expensive damage to components like the blower motor and evaporator coils.
Will a MERV 13 28x30x2 filter restrict airflow too much?
A MERV 13 28x30x2 filter may restrict airflow in some of the older or lower-capacity HVAC systems, while most modern residential systems should handle a MERV filter without issues. If you notice reduced airflow, longer heating/cooling cycles, or increased energy bills after installing a MERV 13 filter, consider changing to a MERV 11 instead.