AIR-FILTERS > 1-INCH > 12X20X1
12x20x1 Air Filter
Actual Size: 11.75" × 19.75" × 0.75"
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Each pack contains 6 filters. Adjust quantity to buy multiple packs.
12x20x1 Air Filter Descriptions
Actual Size: 11.75" × 19.75" × 0.75"
Available In MERV Rating: 8, 11, 13
Made in the USA
2024 #1 Air Filter on Amazon
30,000+ 5 Star Reviews
Free Shipping
30 Days Risk - Free Guarantee
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12x20x1 Air Filter Description
Actual Size: 11.75" × 19.75" × 0.75"
Available In MERV Rating: 8, 11, 13
Made in the USA
2024 #1 Air Filter on Amazon
30,000+ 5 Star Reviews
Free Shipping
30 Days Risk - Free Guarantee
The Simply Promise
Deal with the manufacture directly, and receive our Simply Promise
High Quality Box
Deal with the manufacture directly, and receive our Simply Promise
Dirt Protection Plastic
Stop ordering filters that aren't wrapped in plastic for dust protection during transit.
32PT Beverage Board
Thick water resistant beverage board results in filters that stay in tact! Even when wet
Electrostatic Media
Our media acts like a dust magnet, making sure your home stays clean and fresh
High Capacity Pleats
Our filters have a high pleat count per foot. The more pleats you have the better it filters.
Expanded Metal Backing
Metal wire backing ensures the pleat shape, and keeps the pleat strong.
Every Size Available
Our catalog has over 1500 air filter sizes and is growing! new sizes are added daily.
Made with LOVE
We love what we do best... keeping the air clean for you and your family.
Why Choose Simply Filters Air Filters?
Built to Last Up to 90 Days
Our filters deliver reliable performance for up to three times longer than standard fiberglass filters. If you have pets, children, or allergy sensitivities at home, change them more often to keep your air fresh and your HVAC system energy-efficient.
Proudly Made in the USA
Every Simply Filters product is crafted in the USA with 100% American-made components. When you buy from us, you’re getting premium quality straight from the manufacturer—no middleman, no markup.
Superior Filtration You Can Trust
Our pleated air filters are 20x more efficient than fiberglass alternatives. With strong beverage-board frames that hold up in humidity and heat up to 200°F, plus advanced synthetic media that captures more particles than cotton, you get cleaner air and lasting performance.
Merv comparison
MERV 8
MERV 11
MERV 13
Best for
STANDARD
Residential/Commercial
Healthy Families
SUPERIOR
Residential/Commercial
Allergy Sufferers
OPTIMAL
Residential/Commercial
Hospital Grade
Comparible 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
How Often Should You Replace Your Simply Filters Air Filter?
For most homes, replace every 90 days. Your lifestyle or environment may require more frequent changes.
For Homes with Asthma or Allergies
Change every
6 weeks
to keep air free from pollen, dust, and irritants.
For Pet Owners
Replace every
2 months
to reduce fur, dander, and odors.
For Homes with Young Children
Swap every
2-3 months
to ensure cleaner air for growing lungs.
At Simply Filters, our USA-made filters make fresh air easy year-round.
Testimonials
50,000 5-Star Reviews
A Game Changer for Air Quality!
"I’ve noticed a huge difference in the air quality since switching to Simply Filters. My home feels fresher, and my allergies have significantly improved. I’ll never use another brand!"
Emily R.
My Allergies Have Never Been Better!
"As someone who suffers from seasonal allergies, Simply Filters has been a lifesaver. It traps pollen and dust so well, I can finally breathe easy indoors!"
John D.
Efficient and Easy to Use
"These filters are super easy to install, and the airflow is noticeably better in my home. They last for months, making them a great value for the quality they provide."
Samantha K.
On this page
Simply Filters' 12X20X1 Furnace HVAC Home Air Filters: The Smart Choice for Your Home's Air Quality
Key Takeaways
Key Features
Health Benefits You Can Get
Installation Guide
Cost vs. Return of Investment
Frequently Asked Questions
What’s the difference between Merv 8, Merv 11 and Merv 13?
How often should I replace my air filters?
Are these filters compatible with my HVAC system?
Do these filters help with allergies?
What size filter do I need?
How do I know when my filter needs to be replaced?
What materials are your filters made from?
Does The Airflow Direction Matter When Installing A New Filter?
Do I Need An Exact Size Air Filter?
What’s your processing time?
Do you offer free shipping?
What payment methods do you accept?
Can the discounts be stackable?
Can I track my order?
What should I do if my item is defective or damaged?
How can I initiate a return?
When will I receive my refund?
Simply Filters 12x20x1 Furnace & HVAC Air Filter: Optimized for Clean, Healthy Indoor Air
Simply Filters
Key Takeaways
Reliable and efficient – Designed to trap dust, pollen, pet dander, and more with minimal airflow resistance.
Convenient multi-pack options – Available in packs of 4, 6, 8, or 12 so you always have a ready supply at home.
Key Features
True-to-size design – Actual dimensions of approximately 11.75" × 19.75" × 0.75" ensure a snug fit.
Multiple MERV choices – Available in MERV 8, MERV 11, and MERV 13 to fit various filtration needs.
Robust build quality – Includes electrostatic media, high-pleat synthetic fiber construction, beverage-board framing, and expanded metal backing for durability and efficient filtration. These are part of the brand's "Simply Promise" specs.
Health Benefits You Can Gain
Cleaner air, healthier breathing – Effectively removes common indoor contaminants like dust, pollen, pet dander, and mold spores.
Better indoor comfort – Ideal for allergy-prone households and improves overall indoor air quality.
Installation Guide
1. Shut off your HVAC system.
2. Remove the old filter carefully.
3. Insert the new Simply Filters 12x20x1 filter with the airflow arrow pointing in the right direction.
4. Restore power to your system.
5. Designed for hassle-free, tool-free replacement.
Cost vs. Return on Investment
Compact pricing, long-term benefits – Multi-pack options offer value over time, and regular replacements help maintain system efficiency.
Smart maintenance – Swapping filters every 90 days—or more frequently if needed—can extend HVAC lifespan and reduce energy costs.
Frequently Asked Questions
What’s the difference between Merv 8, Merv 11 and Merv 13?
MERV, or Minimum Efficiency Reporting Value, measures how well an air filter captures particles. Higher MERV ratings mean better filtration.
MERV 8: Captures pollen, dust mites, molds, and dust. Good for basic filtration needs.
MERV 11: Captures pollen, dust mites, molds, dust, auto exhaust particulates, pet dander, and allergens. Ideal for better air quality and allergy control.
MERV 13: Captures pollen, dust mites, molds, dust, auto exhaust particulates, pet dander, allergens, smoke, bacteria, and viruses. Best for superior air quality and advanced filtration.
Choose based on your specific needs for air quality and allergen control.
How often should I replace my air filters?
You should try to regularly maintain good air quality and keep your HVAC system running smoothly.
Typically, it's recommended to replace your air filter every 1 to 3 months, depending on factors like the type of filter you use, your home's air quality, and how often you use your heating or cooling system. If you have pets or allergies, you may need to change it more frequently. Regularly replacing your air filter helps ensure proper airflow, reduces strain on your system and improves energy efficiency.
Are these filters compatible with my HVAC system?
Our filters are designed to be compatible with most standard HVAC systems. To ensure the perfect fit for your specific system, we recommend checking the size and type of filter required by your HVAC unit, which is usually indicated in the system's manual or on the side of your current filter.
If you’re unable to locate the correct size or if your system requires a custom filter, we offer custom filter options.
Do these filters help with allergies?
Yes, our filters can help with allergies and asthma by capturing airborne allergens. For enhanced relief:
MERV 11: Captures pollen, dust mites, mold spores, pet dander, and allergens. Ideal for general allergy control.
MERV 13: Offers higher filtration, capturing pollen, dust mites, mold spores, pet dander, allergens, smoke, bacteria, and viruses. Best for superior air quality and more comprehensive allergy and asthma relief.
We recommend the MERV 13 filter for the best overall performance and maximum protection.
What size filter do I need?
Check your existing filter: If you have an old filter handy, take a look at the frame. You'll usually find the size printed there. Look for both the nominal size (often in larger letters) and the actual size (usually in smaller letters).
Measure the filter space: If you don't have an old filter or can't find the size information, simply grab a tape measure. Measure the length, width, and depth of the area where the filter will be installed.
How do I know when my filter needs to be replaced?
It's time to replace your air filter if you notice any of the following: a burning smell (indicating overheating), declining air quality (more dust or allergies), difficulty maintaining a consistent temperature, or a sudden increase in your energy bills. These are all signs that your filter is clogged and preventing your HVAC system from operating efficiently.
What materials are your filters made from?
Our filters are made from a combination of high-quality materials to ensure effective performance. They contain filter media, which is pleated to increase surface area for better filtration. The frame is crafted from 24-point beverage board, providing a sturdy structure, and the filter is reinforced with a wire mesh for added durability.
Does The Airflow Direction Matter When Installing A New Filter?
Yes, it is essential that you direct the air filter in the proper direction. The direction of the airflow is marked by an arrow on the main body of most filters. Installing it incorrectly could end up causing damage and reducing the efficiency of your HVAC system. To make sure that the filter has been set up properly for optimal performance, always follow the arrow.
Do I Need An Exact Size Air Filter?
Yes, you require an air filter that fits your system properly. A poorly fitted filter might let dust and particles pass through and may require more effort from your HVAC system. This can potentially harm your system and decrease efficiency. Choose an air filter that is exactly the right size for your system at all times for optimal performance.
What’s your processing time?
Once you place an order, our team will immediately begin working to get your filters ready for shipment. Typically, our processing time is 1-2 days. During this period, we ensure that your filters are carefully prepared and packed with the quality you expect from us.
Do you offer free shipping?
Enjoy free standard shipping on all orders over $25! It's our way of saying thank you for choosing Simply Filters.
What payment methods do you accept?
We accept the following payment methods: Visa, MasterCard, American Express (Amex), Discover, PayPal, Shop Pay, and Google Pay.
Can the discounts be stackable?
Unfortunately, our system does not allow multiple discount codes to be used on a single purchase. Only one discount code can be applied per order. While we understand the appeal of combining offers for additional savings, we aim to provide great value with each individual promotion. If you have multiple discounts, we recommend using the one that provides the best savings for your current order. Thank you for your understanding!
Can I track my order?
Once your order has been processed and shipped, you will receive a notification via email containing your tracking information. This will allow you to monitor your order every step of the way until it reaches you. We understand how exciting it is to receive your package, and we’re committed to keeping you informed throughout the process.
What should I do if my item is defective or damaged?
Inspect your order upon receipt and contact us immediately at support@simplyfilters.com with pictures so we can address the issue.
How can I initiate a return?
We want to make sure you're happy with your purchase, so we offer hassle-free returns within 30 days of receiving your item. If the item is unused and in its original packaging, simply email us at support@simplyfilters.com to initiate a return. We'll handle the rest, providing a return shipping label and instructions to ensure a smooth process.
When will I receive my refund?
Once a refund has been processed on our end on your behalf you will receive the refund within 2-10 business days your original payment method. Processing times may vary with your bank or credit card company.