12x30x2 MERV 13 Pleated Air Filter
Actual Size: 11.5x29.5x1.75
Free Delivery 
Factory-Direct Low Prices, Made in the USA
Hassle-Free Returns & Free Exchanges
RESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 11.5x29.5x1.75
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
Actual Size: 11.5x29.5x1.75
Free Delivery Factory-Direct Low Prices, Made in the USAHassle-Free Returns & Free ExchangesRESIDENTIAL AND/OR COMMERCIAL USE
Change Every 3 Months
About
- This is a list 12x30x2 MERV 13 air filter replacement for your furnace, air conditioner, heat pump, or HVAC system
- Actual air filter size: 11.5x29.5x1.75
- MERV 13 synthetic media (comparable with MPR 1500/1900 and FPR 10) offers the best protection from dust, pollen, pet dander, mold, smog, bacteria, and virus carrying particles by trapping 98% of airborne particles without impacting air flow.
- High-quality construction means electrostatically charged pleated filter media, reinforced wire backing for structural integrity, and a durable frame to resist heat and humidity
- Built to last 3 months. 300% longer than fiberglass models
- 100% manufactured in the United States and designed with recyclable materials
- Learn more about 12x30x2 Air Filters
Top-Rated Filters. American Made. Delivered Free.
At Filterbuy, we don't cut corners—we craft high-quality air filters right here in the USA and ship them to your doorstep for free. No delays, no gimmicks—just clean air, made easy. With thousands of five-star reviews and filters built for real life & every HVAC system, it's no wonder why over 4 million families trust Filterbuy.
Proudly Made In The USA
Fast, Free Shipping on Every Order
Premium Materials That Go The Distance
85,000+ 5-Star Reviews From Happy Customers
Save Up to 70% Per Filter with Packs
Things to Know About Filter Sizes
Nominal Size
- The rounded size printed on your filter or HVAC unit (e.g., 12x30x2).
- Usually whole numbers to make identifying and ordering easier.
- A label for compatibility—not the exact measurement.
Actual Size
- The true, trimmed dimensions of the filter (e.g., 11.5x29.5x1.75 inches).
- Filters are manufactured slightly smaller so they slide into the filter slot without forcing.
- If you don't know your nominal size, measure your filter to get the actual size, then round up to find the nominal size to search on our site.
Why the difference?
- Nominal sizes simplify shopping and standardize categories.
- Actual sizes ensure the filter fits properly inside your HVAC's filter rack.
How To Find Your Nominal Size When You Don't Know It
Measure length × width × depth with a tape measure to find the actual size.
Round up each dimension to the nearest whole number to get the nominal size. Example: 11.5x29.5x1.75 in → 12x30x2 nominal.
Search by nominal size on our site for the best fit.
Why Getting the Right Size Matters
- Too small? Air can bypass the filter, reducing air quality and efficiency.
- Too big? It won't fit—risking bent frames and airflow issues.
- Just right? You get maximum performance, better filtration, and cleaner air.
Free Exchange Policy
If the filter you buy doesn't fit, we'll send you a better size.
What's a MERV Rating?
MERV stands for Minimum Efficiency Reporting Value—but don't let the technical name fool you. It's just a way to rate how well an air filter traps stuff like dust, pollen, pet dander, and smoke. The higher the MERV number, the more particles it catches—and the cleaner your air will be.
| What it captures | MERV 8EssentialDust & Allergen Defense | MERV 11AdvancedPet & Allergen Defense | MERV 13PremiumPet & Allergen Defense |
|---|---|---|---|
| Comparable ratings | MPR 700 & FPR 5 | MPR 1200 & FPR 7 | MPR 1500-1900 & FPR 10 |
| Dust & Debris | Yes | Yes | Yes |
| Dust Mites | Yes | Yes | Yes |
| Pollen | Yes | Yes | Yes |
| Mold | Yes | Yes | Yes |
| Lint | Yes | Yes | Yes |
| Dander | Yes | Yes | Yes |
| Smoke & Smog | No | Yes | Yes |
| Bacteria | No | No | Yes |
| Odors | No | No | No |
| Shop MERV 8 | Shop MERV 11 | Shop MERV 13 |
What Makes Our Filters Last 90 Days? Quality, From the Inside Out
We build every Filterbuy filter to deliver reliable 90-day performance—thanks to smart design and premium materials that do the heavy lifting. Here's what makes the difference:
Pleated Design
More pleats = more surface area to capture dust and debris, keeping your air cleaner longer.
Electrostatically Charged Media
Pleats are magnetized to attract and trap microscopic particles—like pet dander, pollen, and smoke.
Synthetic Beverage Board Frame
Engineered to resist warping in extreme temperatures and high humidity.
Aluminum Dual Wire Backing
A layer of metal reinforcement keeps pleats evenly spaced and structurally sound—no sagging, even at high airflow.
Made in the USA
Assembled with care. Built to perform. Ships fast, free, and reliably from our U.S. facilities.
How to Install Your Filter in 4 Simple Steps
Turn Off Your HVAC SystemSafety first.
Remove The Old FilterLook for the airflow arrow and make note of the direction.
Slide In Your New FilterArrow should point toward the system (same direction as before).
Turn Your System Back OnAnd enjoy the fresh, clean air.
Never forget to replace your air filter again.
- Save 5% on every order
- Choose Your Delivery Schedule
- Edit, Skip, or Cancel Anytime.
Pleated Filters vs. Fiberglass—What's the Difference?
Not all air filters are created equal. Pleated filters don't just last longer—they actually clean your air better. Here's how they stack up:
Pleated Filters
Efficiency:
High (MERV 8–13) – Traps more particles
Lifespan:
90 days – Long-lasting performance
Air Quality:
Excellent – Cleaner, healthier air
Materials:
Recyclable and durable
Fiberglass Filters
Efficiency:
Low (MERV 4 or less) – Misses small stuff
Lifespan:
30 days or less – Replace often
Air Quality:
Minimal – Basic protection only
Materials:
Thin, flimsy, and not recyclable
Pleated filters are a no-brainer—more protection, less hassle, and better air for your home.
How Often Should You Change Your Filter?
Changing your filter on time keeps your HVAC system running efficiently—and helps protect your lungs from dust, allergens, and airborne irritants. Here's how often to swap it out based on your needs:
Every 90 Days
Standard ScheduleFor most homes without pets or special air quality concerns. Great for general upkeep and energy efficiency.
Every 60 Days
If You Have Pets or AllergiesShedding fur, dander, and allergy triggers can build up fast. Changing your filter every two months helps keep the air fresher and symptoms at bay.
Every 30 Days
If You Have Respiratory Concerns or Live in Smog/Wildfire ZonesFor households affected by smoke, pollution, or respiratory conditions, monthly changes ensure maximum protection.
Want to stay on track? Set a reminder—or skip the stress with auto-delivery so fresh filters show up right when you need them.
Don't Just Take Our Word For It...
Got More Questions? We've Got Answers.
Product Specifications
| Nominal Size | 12 x 30 x 2 inches |
| Actual Size | 11.5 x 29.5 x 1.75 inches |
| Filter Type | Pleated |
| Media | Electrostatically Charged |
| Frame | Beverage Board |
| MERV Ratings Available | 8, 11, 13 |
| Lifespan | Up to 90 Days |
| Origin | Made in USA |
Best 12x30x2 MERV 13 Furnace & HVAC Air Conditioner Filters
By Michelle Wan · Reviewed by David Clark, Licensed HVAC Technician, Filterbuy HVAC Solutions · Published October 30, 2026 · Updated October 30, 2026
TL;DR
A 12x30x2 MERV 13 air filter replacement is a 2-inch pleated filter for furnaces, air conditioners, and heat pumps with a 12x30x2 slot. It actually measures 11.5 x 29.5 x 1.75 inches. MERV 13 is Filterbuy's Optimal tier and our pick for smoke. You can buy it in 4-, 6-, or 12-packs.
Key Takeaways
A 12x30x2 filter actually measures 11.5 x 29.5 x 1.75 inches. "12x30x2" is the ordering name printed on the frame.
Filterbuy's ladder: MERV 8 for most homes, MERV 11 for allergies and pets, MERV 13 for smoke, and Odor Eliminator for odors.
A 4-pack covers a year of 90-day changes. A 6-pack covers a year of 60-day changes.
Filterbuy filters are cut, pleated, and framed to order in our own US plants.
What Is a 12x30x2 MERV 13 Air Filter?
It's a pleated replacement filter for a furnace, air conditioner, or heat pump built for a 12-by-30-inch, 2-inch-deep slot. MERV (Minimum Efficiency Reporting Value) is a 1–16 scale for how well a filter captures airborne particles, and 13 is the top of Filterbuy's home lineup.
The media carries a static charge that pulls fine particles onto the pleats. A beverage board frame with aluminum wire backing keeps it flat, so air goes through the filter instead of around it.
What Is the Actual Size of a 12x30x2 Air Filter?
The actual size is 11.5 x 29.5 x 1.75 inches. Finding your size is easy: it's printed on the frame of the filter you have now. "12x30x2" is the nominal size, the name you order by.
Filterbuy cuts the filter a little smaller than its nominal size on purpose. That clearance is what lets it slide in and still fit snugly.
No old filter? Measure the slot and round each number up to the next whole inch. Check depth twice, since it's the dimension people get wrong most often. A 12x30x1 won't fill a 2-inch slot. If your size isn't listed, Filterbuy cuts custom air filters to the eighth of an inch.
The question I get most is which MERV to buy. The one to ask first is whether the filter you are holding actually fills the slot. A rating describes the media, not the gap around it.
Michelle Wan, Brand Manager and Air Quality Writer, Filterbuy, in How to Measure Your Air Filter
Is a 12x30x2 MERV 13 Air Filter Good for Allergies?
Filterbuy's tier for allergy sufferers is MERV 11. MERV 13 captures everything MERV 11 does, including pollen, dust mite debris, and pet dander, and adds finer particles like smoke.
So pick a 12x30x2 MERV 11 filter if allergies are your main reason for shopping. Pick MERV 13 if smoke matters to you too. The American Lung Association suggests upgrading furnace filters, preferably to MERV 13 or above. For questions about allergy or asthma symptoms, talk to your doctor.
Check your HVAC manual for compatibility, the same quick check as confirming your size.
Will a 12x30x2 MERV 13 Filter Work with My Furnace, AC, or Heat Pump?
Yes, if the slot is 12x30x2. Your furnace filter and your AC filter are the same part, because a central system pulls air through one slot whether it's heating or cooling. Check your HVAC manual for compatibility, the same quick check as confirming your size.
The 2-inch depth holds more pleated media than a 1-inch filter with the same length and width, and it's built to last up to 90 days.
MERV 8 vs. MERV 11 vs. MERV 13: Which 12x30x2 Filter Should I Buy?
Choose by what you want captured. A 12x30x2 MERV 8 filter is the standard choice for most homes. A 12x30x2 MERV 11 filter fits allergies and asthma, plus pets and pollen. MERV 13 is the pick for smoke. For odors, look at Filterbuy's carbon Odor Eliminator filters.
MPR and FPR are third-party rating systems from other companies, shown for comparison only.
All three tiers share the same 11.5 x 29.5 x 1.75-inch actual size. See our MERV rating chart for the full scale. Check your HVAC manual for compatibility, the same quick check as confirming your size.
Should You Buy a 12x30x2 MERV 13 4-Pack or 6-Pack?
Buy the pack that matches how often you change filters. A 12x30x2 MERV 13 4-pack lasts one year if you change every 90 days. A 6-pack lasts a year at 60-day changes, or 18 months at 90 days.
Per-filter prices as listed on filterbuy.com on September 30, 2026. Cost per day is the price per filter divided by 90 days.
Auto-delivery saves another 5% and ships on a 30-, 60-, or 90-day schedule. Set it once and breathe easy.
How Do You Replace a 12x30x2 Air Filter?
You need about two minutes and no tools. Can't find the slot? Here's where your HVAC air filter is located.
Turn your system off at the thermostat.
Slide out the old filter. Note which way its airflow arrow points.
Slide in the new Filterbuy 12x30x2 MERV 13 with the arrow pointing toward the blower, into the unit.
Write today's date on the frame.
Turn the system back on.
Why Buy 12x30x2 MERV 13 Filters from Filterbuy?
Because we make them. Filterbuy is a manufacturer, not a reseller. Our filters are cut, pleated, and framed to order in our own US plants, and they ship with fast and free 2-day delivery to most US states.
Filterbuy, Inc. is a second-generation, family-owned company. It started in the 1950s as Talladega Machinery and Supply and sold its first air filter in 2013. Shop 12x30x2 air filters or compare 2-inch air filters.
Supporting Statistics
8.6% of U.S. adults and 6.5% of children have asthma.
Source: CDC, FastStats: Asthma (2024 data).
Why it matters: if someone at home has asthma, ask their doctor about triggers. Filterbuy's Allergy Sufferers tier is MERV 11.
145.0 million Americans had at least one particle pollution day rated "Unhealthy" or worse.
Source: American Lung Association, State of the Air 2026 (2022–2024 data).
Why it matters: the report names wildfire smoke as a key factor. Filterbuy's tier for smoke is MERV 13.
A clean filter can cut an air conditioner's energy use by 5–15%.
Why it matters: changing on time saves money, and the pack planner above does the math for you.
Frequently Asked Questions
How Often Should I Change a 12x30x2 MERV 13 Filter?
Every 90 days in a typical home, and every 60 days if you have pets or allergies. Not sure? Hold the filter up to a light. If light doesn't pass through the pleats, replace it. ENERGY STAR, the EPA and Department of Energy efficiency program, suggests checking monthly.
Does a 12x30x2 MERV 13 Filter Capture Wildfire Smoke?
MERV 13 is Filterbuy's pick for smoke. The EPA says MERV 13 is the first rating required to capture at least half of the finest particles it tests, a size range that includes much of wildfire smoke. Your system only filters air while it runs, so set the thermostat fan to "On" on smoky days. For health questions, talk to your doctor.
Does a 12x30x2 MERV 13 Filter Remove Odors?
Not really. Pleated filters capture particles, and most odors are gases. For odors, Filterbuy makes carbon Odor Eliminator filters.
Glossary
MERV (Minimum Efficiency Reporting Value): A 1–16 scale, from an ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) test method, for how well a filter captures airborne particles.
Nominal size: The rounded size you order by, such as 12x30x2.
Actual size: The filter's measured dimensions, such as 11.5 x 29.5 x 1.75 inches for a Filterbuy 12x30x2.
MPR and FPR: Third-party filter rating systems from other companies. They are not Filterbuy ratings.
Pleated filter: Filter media folded into pleats to add surface area.