Shop by
Actual Size: 12x26.5x1"

3 month filters
2. Select Quantity
Buying multiple sizes?
You will still be able to review your order details.
Made in the USA
Ships in 24 hours
Available In MERV Rating: 8, 11, 13
Made in the USA
Ships in 24 hours
Scroll to see more.
MERV 8 | MERV 11 | MERV 13 | |
|---|---|---|---|
| Best for | Standard Residential/Commercial Healthy Families | Superior Residential/Commercial Allergy Sufferers | Optimal Residential/Commercial Hospital Grade |
| Comparable ratings | MPR 600 & FPR 5 | MPR 1000-1200 & FPR 7 | MPR 1500 - 1900 & FPR 10 |
| Filtration | Captures 90% of Airborne Particles | Captures 95% of Airborne Particles | Captures 98% of Airborne Particles |
| Dust, lint & debris | |||
| Mold, pollen | |||
| Dander, dust mites | |||
| Smoke & Smog | |||
| Bacteria | |||
| Odor, vocs |
Generally, we recommend you replace your air filters every 90 days. Find out below if you should change your filters more often.

Change your filter every
6 weeks
to ensure indoor air quality is at its best.

Change your filter every
2 months
to avoid shedding and odor buildup.

Change your filter every
2-3 months
as having clean air is even more important with children in your home.

Change your filter every
6 weeks
to ensure indoor air quality is at its best.

Change your filter every
2 months
to avoid shedding and odor buildup.

Change your filter every
2-3 months
as having clean air is even more important with children in your home.
Through our hands-on testing in real homes, we discovered that a well-chosen, air conditioner filter 12x26.5x1 can provide real protection against pet allergens, odors, and dust—without blowing your budget.
This isn’t just a price-based recommendation. We’ve seen these filters reduce allergy symptoms, cut down on fur buildup, and noticeably freshen indoor air. In this guide, we’re sharing the exact filters we trust and how to get the best value.
A smartly chosen premium 12x26.5x1 MERV rated filter captures pet dust and odors.
Over 69% of U.S. homes have pets—but many use filters with little allergen control.
We’ve seen it firsthand. Filterbuy filters improved air quality in real pet homes we’ve worked with.
Sign up for automatic delivery, save an extra discount on future filters.
Many people, even those unaware they're sensitive, suffer from allergies triggered by pet dander circulating in their homes. While up to 30% of allergy sufferers react to cats or dogs, most pet owners aren't using the right filters or replacing them often enough.
The good news is that a quality MERV rated air filter, recommended by ASHRAE for its ability to capture pet dander, mold spores, and dust mites, can bring quick and noticeable relief. Our experience in numerous pet homes confirms that even a simple, cost-effective switch to a MERV rated filter, like the Filterbuy 12x26.5x1 pleated air filter can lead to major improvements in air quality and reduced allergy symptoms.
Source: ACAAI – Pet Allergy Facts, ASHRAE – Filtration Guide

Unlike standard filters designed to catch only large debris, Filterbuy 12x26.5x1 air filters for allergies are made with advanced materials to trap even the tiniest microscopic irritants. As your HVAC system circulates air, these superior filters actively capture allergens.
Experience peace of mind knowing premium air filters from Filterbuy significantly benefit your health. Curious about how these advantages come to life? Here's the breakdown.
Allergen Reduction: Capture pollen, dust and pet dander. This leads to fewer sneezes and a comfortable home environment.
Respiratory Health: These filters enhance overall respiratory well being. Welcome deep, clean breaths and say bye to persistent coughing.
Prevent Mold Spores: Filterbuy filters also reduce the spread of mold spores. Which prevents allergic reactions and respiratory problems.
Odor Reduction: An additional perk is the minimization of household odors. Resulting in fresher, cleaner-smelling air.
Air filter replacement is a simple task with Filterbuy. Our filters are designed for simplicity and efficiency. Making installation a breeze for anyone. Their user-friendly design and broad compatibility across diverse HVAC systems ensure a stress-free process. This commitment to practicality truly sets Filterbuy filters apart.
Here are the easy steps for a stress free installation:
Turn off your HVAC system's power.
Have your best 12x26.5x1 air filter ready.
Carefully remove the old air filter.
Note the direction of the airflow arrows on the old filter.
Insert the new 12x26.5x1 air filter into the slot.
Turn the power back on.
Tips for maintaining your filter:
Regular maintenance is crucial for preserving filter durability. It optimizes HVAC system performance and saves both money and time.
Ensure Proper Fit: Make sure there are no gaps when you put your filter. This maintains effectiveness and prevents damage to your HVAC.
Filter Replacement Schedule: Replace your filter every 60 to 90 days. Households with pets or individuals with allergies need more frequent replacements.
Keep Extras on Hand: Always have spare filters available. This avoids unexpected issues or delays.
Auto Delivery Service: Sign up for automatic delivery and save an extra discount on future filters.
Filterbuy filters are designed with simplicity and efficiency at their core. This makes them exceptionally easy to maintain. This user-friendly focus ensures a convenient and hassle free experience for all users, distinguishing Filterbuy from its competitors.
Yes. Air filters must be the exact size specified by the HVAC to ensure they fit correctly and function effectively.
MERV 11 is not too high for residential use. It generally provides a good balance between effective filtration and maintaining airflow.
MERV 8 to 11 is best for maintaining optimal airflow while providing sufficient filtration for most residential needs.
Expensive air filters can make a difference by offering superior filtration and longer life. But the choice should be based on specific system requirements and air quality needs.
Using cheap air filters is acceptable if they meet the system's minimum filtration needs, but they may require more frequent replacement and provide less effective filtration.
Take out your new air filters from Filterbuy packaging.
Detach the existing filter from the HVAC system.
Verify system compatibility with the filter.
Fit the new filter into the system.
Start experiencing better air quality in your environment.