20x30x1 Air Filters: MERV 8, 11 & 13, Delivered on Schedule
Looking for a 20x30x1 air filter? 20x30x1 is a big 1-inch filter, often used in large central returns. A wide filter that is the wrong size leaves gaps where dust bypasses it, so match all three numbers.
Every Draynix 20x30x1 filter is a 1-inch pleated AC and furnace filter in your choice of rating: - MERV 8: everyday dust and pollen control, fine for every system. - MERV 11: finer capture, including pet dander, when your system allows. - MERV 13: the finest of the three; check your system manual first, since some older systems prefer less restriction.
Not sure which rating? Read MERV 8 vs 11 vs 13. Not sure it's 20x30x1? The size is printed on your old filter's frame, or take the Find Your Filter quiz.
Two ways to buy 20x30x1
| Rating | Stock-Up 6-pack, no subscription | Filter Plan (per filter) |
|---|---|---|
| MERV 8 | $119.99 (6 filters, $20.00 each) | $35.99 one-time · $32.39 every 3 months (10% off) · $28.79 monthly (20% off) |
| MERV 11 | $149.99 (6 filters, $25.00 each) | $40.99 one-time · $36.89 every 3 months (10% off) · $32.79 monthly (20% off) |
| MERV 13 | $179.99 (6 filters, $30.00 each) | $45.99 one-time · $41.39 every 3 months (10% off) · $36.79 monthly (20% off) |
- Get a 20x30x1 air filter 6-pack: one box of 6. Every Stock-Up Pack is over $70, so Standard shipping is free.
- Start a 20x30x1 Filter Plan: delivered monthly or every 3 months. Skip or cancel anytime.
- Also in 20x30x1: Carbon Odor-Control Filters, 6-pack ($134.99).
Shipping: $12 Standard, free Standard at $70+, $15 Express. US addresses only.
Frequently asked questions
How often should I change a 20x30x1 air filter?
For a 1-inch pleated filter, plan on every 1–3 months. Change it monthly in heavy cooling season, with pets, or during construction dust. Check it monthly and replace it when it looks gray. The Filter Plan ships monthly (20% off) or every 3 months (10% off), so the next one shows up before you need it.
Can I use a 20x30x1 instead of a 20x30x2?
No. Filter depth has to match your filter slot or cabinet. A 1-inch filter in a 2- or 4-inch slot leaves gaps, so air bypasses the filter and dirt reaches the coil. Draynix currently sells 1-inch filters only, so if your slot is deeper, check with your HVAC tech.
What does nominal filter size mean?
"20x30x1" is the nominal (rounded) size printed on the frame. The true dimensions usually run about ½ inch smaller on length and width, and the frame is a little under 1 inch deep. Order by the nominal size printed on your current filter, not a tape-measured slot. Not sure? Use Find Your Filter.
What MERV rating should I use?
Most homes do well with MERV 8 (dust, pollen, lint). Step up to MERV 11 to catch more pet dander and pollen, or MERV 13 for the finest capture (smoke, fine dust) if your system handles the airflow. Filter Plan prices are the same in every size, from $28.79 per filter on monthly delivery.
More ways to find your filter
- 20x30x1 by rating: MERV 8 air filters · MERV 11 air filters · MERV 13 air filters
- Other sizes: 16x25x1 air filters · 20x25x1 air filters · 16x20x1 air filters · 20x20x1 air filters · 14x20x1 air filters
- Guides: What size AC filter do I need? · How often to change your AC filter · MERV 8 vs 11 vs 13
- Find Your Filter quiz · All Filter Plans