📦 20x20x1 Air Filter Quick Order Guide
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20x20x1 Air Filters: Save 20% on MERV 8, 11 & 13 Six-Packs
If you're looking for 20x20x1 air filters, you've found the best prices online. Atomic Filters offers premium USA-made filters in three MERV ratings to match your specific needs and budget. Whether you need basic protection or hospital-grade filtration, we have the right filter for your home.
Choose Your 20x20x1 Filter Type
MERV 8 - Basic Protection
Filters dust, pollen, and lint. Perfect for older HVAC systems that can't handle higher MERV ratings.
- ✓ Protects HVAC equipment
- ✓ 90-day replacement cycle
- ✓ Made in USA
- ✓ Low airflow restriction
MERV 11 - Balanced Choice
Filters pet dander, mold spores, and fine dust. Our #1 seller for good reason!
- ✓ Tribo-electric media
- ✓ 60-day replacement cycle
- ✓ Ideal for pets & allergies
- ✓ Best price/performance ratio
MERV 13 - Maximum Protection
Hospital-grade filtration for bacteria, smoke, and viruses. Maximum allergy protection.
- ✓ HEPA-level performance
- ✓ 30-45 day replacement
- ✓ Filters bacteria & viruses
- ✓ Best for severe allergies
Compare 20x20x1 Filter MERV Ratings
| Feature | MERV 8 | MERV 11 ⭐ | MERV 13 |
|---|---|---|---|
| Price per filter | $7.83 | $10.00 | $10.83 |
| Filters Out | Dust, pollen, lint | + Pet dander, mold spores | + Bacteria, smoke, viruses |
| Particle Efficiency | ~20% | ~65% | ~85% |
| Replacement Cycle | 90 days | 60 days | 30-45 days |
| Annual Filter Cost | $31.32 | $60.00 | $97-130 |
| Best For | Basic needs, older systems | Most homes | Severe allergies, health issues |
Why Your 20x20x1 Filter Choice Matters
According to the EPA, indoor air can be 2 to 5 times more polluted than outdoor air. The CDC and American Lung Association have identified indoor air quality as a significant health concern. Your 20x20x1 air filter is your first line of defense against:
- Dust mites and their waste products
- Pet dander and hair
- Pollen and outdoor allergens
- Mold spores and mildew
- Bacteria and viruses (MERV 13 only)
- Smoke and odors
Common 20x20x1 Filter Applications
The 20x20x1 size (actual dimensions: 19.5" x 19.5" x 0.75") is one of the most common residential filter sizes. It fits many popular HVAC systems including:
Carrier/Bryant
- 58STA/STX series
- 58PAV series
- 355MAV series
Lennox
- G40/G50/G60 series
- G61V series
- Merit series
Trane
- XR80/XR90/XR95
- XL80/XL90
- XV80/XV90
Other Brands
- Goodman GMT/GMP
- Rheem Classic series
- York Diamond series
How to Install Your 20x20x1 Air Filter
- Turn off your HVAC system at the thermostat
- Locate your filter slot - usually in the return air duct or blower compartment
- Remove the old filter - note the airflow arrow direction
- Insert new filter with arrow pointing toward the blower/furnace
- Set a reminder to change again (30-90 days depending on MERV rating)
Need more help? Read our complete 20x20x1 filter installation guide.
Why Buy 20x20x1 Filters from Atomic?
Made in USA
Manufactured in our Texas facility with American materials and labor
Bulk Savings
6-pack pricing saves you 20% compared to buying singles at big box stores
Fast & Free Shipping
95% of orders ship same day. Free shipping on all filter orders
Perfect Fit Guarantee
True-to-size construction ensures proper fit in your HVAC system
Frequently Asked Questions About 20x20x1 Filters
How often should I change my 20x20x1 air filter?
It depends on your MERV rating and home conditions. MERV 8 filters last 90 days, MERV 11 filters last 60 days, and MERV 13 filters need changing every 30-45 days. Change more frequently if you have pets, allergies, or live in a dusty area.
What's the actual size of a 20x20x1 filter?
The actual dimensions are 19.5" x 19.5" x 0.75". The 20x20x1 is the nominal (ordering) size. Learn more about nominal vs actual filter sizes.
Which MERV rating should I choose?
For most homes, MERV 11 offers the best balance of filtration and airflow. Choose MERV 8 if you have an older system or want basic protection. Select MERV 13 if you have severe allergies or respiratory issues. Read our MERV comparison guide for details.
Can I use a MERV 13 filter in any system?
Not always. MERV 13 filters have denser media that restricts airflow more than lower ratings. Older or smaller systems may struggle with MERV 13. Check your system's specifications or start with MERV 11 if unsure.
Do you offer subscription delivery?
Yes! Subscribe and save an additional 5% on every order. We'll automatically ship your filters on your chosen schedule (30, 60, or 90 days). Cancel or modify anytime.
Ready to Improve Your Indoor Air Quality?
Join thousands of homeowners who trust Atomic Filters for their 20x20x1 filter needs.
✓ Free Shipping | ✓ Ships Today (order by 2 PM EST) | ✓ Made in USA