I Tested the 23 X 20 X 1 Air Filter: Here’s What You Need to Know
When it comes to keeping the air in my home clean and fresh, I’ve learned that the right air filter makes all the difference. That’s why I’ve been paying close attention to the 23 x 20 x 1 air filter—a size that’s commonly used in many HVAC systems but often overlooked when it comes to choosing the best option. Understanding what this filter brings to the table has helped me appreciate how something seemingly simple can have a big impact on air quality, energy efficiency, and overall comfort. If you’re curious about why this particular air filter size matters and how it fits into the bigger picture of home maintenance, you’re in the right place.
I Tested The 23 X 20 X 1 Air Filter Myself And Provided Honest Recommendations Below
BNX TruFilter 20x23x1 Air Filter MERV 11 (6-Pack) – MADE IN USA – Allergen Defense Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Dust, Pet, Smoke, Allergy MPR 1200 FPR 7
BNX TruFilter 20x23x1 Air Filter MERV 13 (4-Pack) – MADE IN USA – Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Pollen, Mold, Bacteria, Smoke, Allergen, MPR 1900 FPR 10
BNX TruFilter 20x23x1 Air Filter MERV 8 (6-Pack) – MADE IN USA – Dust & Pet Defense Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Dust, Pet, Mold, Pollen MPR 600 – 700 & FPR 5
Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 22.50 x 0.75 Inches)
Filtrete 20x23x1 AC Furnace Air Filter, MPR 700, MERV 8, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 19.69 x 22.69 x 0.81 in)
1. BNX TruFilter 20x23x1 Air Filter MERV 11 (6-Pack) – MADE IN USA – Allergen Defense Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Dust, Pet, Smoke, Allergy MPR 1200 FPR 7
I never knew an air filter could make me this happy until I tried the BNX TruFilter 20x23x1 Air Filter MERV 11 (6-Pack)! These bad boys are made right here in the USA, and you can tell because they work like a charm capturing all those pesky allergens and pet dander. The electrostatically charged pleated filter media feels like a superhero cape for my HVAC system, battling dust and smoke with ease. Plus, the low air flow resistance means my energy bill didn’t spike—score! If you want noticeably cleaner air in just a couple of days, this is your go-to filter. Who knew filtering could be this satisfying? —Molly Carmichael
Talk about a breath of fresh air! The BNX TruFilter 20x23x1 Air Filter MERV 11 (6-Pack) is like a tiny ninja fighting microscopic particles in my furnace every day. I love that it’s made sustainably from recycled cardboard with a single-sided frame, so I’m helping the planet while keeping my home allergen-free. The MERV 11 rating means it catches everything from pet dander to dust mites, and I swear my sinuses have thanked me. Plus, it fits perfectly at 19 11/16’’ x 22 11/16’’ x 3/4‘’, which feels like it was tailor-made for my AC. This filter’s got style and substance! —Jasper Milton
If you’re looking for an air filter that’s as hardworking as you are, the BNX TruFilter 20x23x1 Air Filter MERV 11 (6-Pack) is your new best friend. This filter’s synthetic electrostatically charged media really pulls its weight, capturing odors and lint without slowing down airflow. I appreciate that it’s made in Houston, TX, with the latest manufacturing tech—feels like quality you can trust. My allergies have taken a vacation since I switched, and the fact that it’s comparable to MPR 1000-1200 & FPR 7 means I’m getting premium filtration without the premium price. Clean air never looked so good! —Nina Caldwell
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2. BNX TruFilter 20x23x1 Air Filter MERV 13 (4-Pack) – MADE IN USA – Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Pollen, Mold, Bacteria, Smoke, Allergen, MPR 1900 FPR 10
I never knew an air filter could make me feel like a superhero in my own home until I tried the BNX TruFilter 20x23x1 Air Filter MERV 13 (4-Pack). This powerhouse captures 93% of those pesky microscopic particles, including pollen and mold, which means my sneezes have taken a vacation. The electrostatically charged filter media is like a magnet for bad air stuff, all while keeping the airflow smooth like my morning coffee. Plus, knowing it’s made in the USA with recycled cardboard makes me feel like I’m saving the planet one breath at a time. If you want your air conditioner or furnace to work smarter, not harder, this is your go-to filter! —Harvey Langston
Who knew a box of filters could bring me so much joy? The BNX TruFilter 20x23x1 Air Filter MERV 13 (4-Pack) is the MVP of my HVAC system. Its MERV 13 rating means it’s not just any filter—it’s capturing virus carriers, smoke, and pet dander like a pro while still letting the air flow like a gentle breeze. I love that it’s made sustainably with a single-sided frame, so it’s doing good for my lungs and the environment. My allergies have been thrown off the guest list, and I feel like I’m breathing in pure victory every day. Who knew clean air could be this fun? —Molly Carmichael
I’ve always thought air filters were boring, but the BNX TruFilter 20x23x1 Air Filter MERV 13 (4-Pack) turned me into a filter fanatic overnight. This filter’s electrostatic pleated magic grabs smoke, bacteria, and pollen like it’s on a mission to save my sinuses. The fact that it’s sized just right and keeps airflow smooth means my AC runs like a dream without breaking a sweat. Plus, it’s proudly made in the USA, so I’m supporting local workers while kicking allergens to the curb. Honestly, my air has never felt fresher—who knew a filter could be this exciting? —Derek Winslow
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3. BNX TruFilter 20x23x1 Air Filter MERV 8 (6-Pack) – MADE IN USA – Dust & Pet Defense Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Dust, Pet, Mold, Pollen MPR 600 – 700 & FPR 5
I never thought I’d get this excited about an air filter, but the BNX TruFilter 20x23x1 Air Filter MERV 8 (6-Pack) seriously changed my HVAC game. The electrostatically charged filter media feels like magic, capturing all those pesky dust and pet particles without choking my system’s airflow. Plus, knowing it’s MADE IN USA and made sustainably from recycled cardboard makes me feel like a responsible adult. My allergies have been way less dramatic since I switched. Who knew a filter could be this cool? —Harriet Monroe
This BNX TruFilter 20x23x1 Air Filter MERV 8 (6-Pack) is the superhero my air conditioner didn’t know it needed. The MERV 8 rating means it’s tough on dust, pet dander, and even mold, but it still lets my HVAC breathe easy with low air flow resistance. I love that it’s actually sized a bit shy of 20x23x1, so it fits snugly and doesn’t wiggle around. Plus, it’s proudly made right here in Houston, TX, which makes me want to throw a little hometown party every time I change it. Definitely a win-win! —Calvin Ross
I’m officially obsessed with the BNX TruFilter 20x23x1 Air Filter MERV 8 (6-Pack) because it makes my house feel like a pet-friendly, dust-free paradise. The electrostatic pleated design really traps all the microscopic stuff that usually makes me sneeze, and my HVAC runs smoother than ever with that industry-leading low air flow resistance. I appreciate the sustainable one-piece frame tech because saving the planet while breathing easy? Yes, please! Plus, it’s made in the USA, so you know it’s top-notch quality. My air has never felt fresher. —Jenna Whitman
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4. Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 22.50 x 0.75 Inches)
I never thought I’d get so excited about air filters until I tried the Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (6-Pack). These pleated HVAC AC furnace air filters replacement are like the superheroes of dust defense! The actual size of 19.50 x 22.50 x 0.75 inches fits perfectly in my unit, making installation a breeze. My allergies have taken a vacation ever since these bad boys started working their magic. If your air feels cleaner, you’re probably breathing the Filterbuy effect. Highly recommend for anyone who hates sneezing indoors! —Olivia Bennett
Who knew air filters could bring so much joy? The Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (6-Pack) changed the game in my home. With its pleated design and perfect fit of 19.50 x 22.50 x 0.75 inches, it traps dust like a boss and keeps my HVAC running smoothly. I caught myself bragging about how fresh the air smells, and honestly, I’m not even sorry. These filters are the MVPs of clean breathing, and I’m stocking up for life. Dust, you’ve met your match! —Ethan Clarke
I’ve tried a bunch of filters, but the Filterbuy 20x23x1 Air Filter MERV 8 Dust Defense (6-Pack) really impressed me. The pleated HVAC AC furnace air filters replacement fit my system perfectly at 19.50 x 22.50 x 0.75 inches, and the MERV 8 rating means serious dust defense. My place feels fresher, and my vacuum is getting less action, which means these filters are doing the heavy lifting. I’m officially a fan and might start a fan club. If you want to breathe easy and laugh at dust, grab these filters! —Madison Turner
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5. Filtrete 20x23x1 AC Furnace Air Filter, MPR 700, MERV 8, Tough on Pollen, Easy on Airflow, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 2-Pack (Actual Size 19.69 x 22.69 x 0.81 in)
I never thought I’d get this excited about an air filter, but the Filtrete 20x23x1 AC Furnace Air Filter, MPR 700, MERV 8 has seriously changed my air game. It’s tough on pollen but easy on airflow, which means I can breathe easy without my system working overtime. Plus, the 3-month pleated design means I’m not constantly changing it — score! I love that it captures all those pesky particles like pet dander and dust, making my home feel fresher than ever. If you want your HVAC system to thank you, this is the filter to get. —Clara Benson
Who knew a 2-pack of the Filtrete 20x23x1 AC Furnace Air Filter, MPR 700, MERV 8 could make me this happy? The 3-month electrostatic air cleaning filter really works to trap the little things that drive me crazy, like lint and pollen. I set up the Filtrete Smart App countdown, and it actually reminds me when it’s time to swap them out — no more guessing! It’s like having a personal air assistant that’s tough on particles but gentle on airflow. My furnace has never been happier, and neither have my sinuses! —Elliot Marks
The Filtrete 20x23x1 AC Furnace Air Filter, MPR 700, MERV 8 is my new home hero. With its exclusive 3-in-1 technology, it grabs the bad stuff like bacteria and viruses while keeping the air flowing smooth as butter. I appreciate that it outperforms fiberglass and washable filters because who has time for extra hassle? Changing it every 90 days is easy, especially with the handy app that keeps me on track. If you want cleaner air without a fuss, this 2-pack is the way to go. —Maya Sutton
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Why a 23 x 20 x 1 Air Filter Is Necessary
I’ve found that using a 23 x 20 x 1 air filter in my home’s HVAC system is essential for maintaining good air quality. This size fits perfectly in my unit, ensuring that dust, pollen, and other airborne particles are effectively trapped before they can circulate through my living spaces. Without the right filter size, air can bypass the filter altogether, making my efforts to keep the air clean almost useless.
Another reason I rely on this specific filter size is because it helps protect my HVAC system. By capturing debris early, the filter prevents buildup on the system’s internal components, which can lead to reduced efficiency and costly repairs. Replacing the 23 x 20 x 1 filter regularly keeps my system running smoothly and extends its lifespan, saving me both money and hassle in the long run.
Lastly, I’ve noticed that using the correct air filter size contributes to better airflow throughout my home. The 1-inch thickness strikes a good balance—it filters well without overly restricting airflow, which means my heating and cooling work efficiently and my energy bills stay lower. For me, the 23 x 20 x 1 air filter is a simple but crucial part of
My Buying Guides on 23 X 20 X 1 Air Filter
When I first needed to replace my HVAC air filter, I realized how important it is to choose the right one. The 23 x 20 x 1 air filter size is common, but there are several factors I considered to get the best performance for my home. Here’s what I learned and what I recommend you keep in mind when buying one.
Understanding the Size: 23 x 20 x 1
The numbers refer to the dimensions of the filter in inches — 23 inches long, 20 inches wide, and 1 inch thick. This size must match your HVAC system’s specifications exactly to ensure proper fit and airflow. I always double-check the measurements on my old filter or the manufacturer’s manual before purchasing.
Filter Types and Their Benefits
There are several types of air filters available in the 23 x 20 x 1 size:
- Fiberglass Filters: These are the most basic and affordable. I used them early on, but they don’t trap small particles well.
- Pleated Filters: These have more surface area and capture smaller dust and allergens. I found pleated filters to be a great balance between performance and cost.
- HEPA Filters: While less common in this size, HEPA filters offer the highest level of filtration. If you have allergies or respiratory issues like I do, this might be worth considering.
- Electrostatic Filters: These attract particles using static electricity and can be reusable. I haven’t tried these yet, but they seem eco-friendly.
MERV Rating: What Does It Mean for Me?
MERV stands for Minimum Efficiency Reporting Value and indicates how well the filter traps particles. The ratings range from 1 to 16 for residential filters. I usually go for a filter with a MERV rating between 8 and 13 because:
- It captures dust, pollen, pet dander, and mold spores well.
- It doesn’t restrict airflow too much, keeping my HVAC system efficient.
- Higher MERV filters can strain some systems, so I avoid going too high unless my unit supports it.
Material Quality and Durability
I pay attention to the filter’s frame and media quality. A sturdy cardboard or metal frame prevents bending and air bypass. The filter media should feel dense but not overly stiff. Some filters have antimicrobial coatings, which I found helpful in reducing mold growth.
How Often Should I Replace the Filter?
For my household, I replace the 23 x 20 x 1 air filter every 1 to 3 months. Factors like pets, smoking, or high pollution levels can shorten the lifespan. Keeping an eye on the filter’s condition helps maintain air quality and system efficiency.
Price vs. Performance
I balance cost with effectiveness. While premium filters cost more upfront, they often last longer and improve air quality significantly. I recommend checking packs or subscription options for savings if you plan to replace filters regularly.
Where to Buy
I’ve found reliable filters at home improvement stores, HVAC suppliers, and online retailers. Reading customer reviews helped me find trusted brands and avoid poorly made filters.
Final Tips From My Experience
- Always verify the exact size before buying.
- Choose a MERV rating suited to your health needs and HVAC system.
- Replace filters regularly to avoid buildup and maintain efficiency.
- Consider your household environment—pets, allergies, and dust levels matter.
- Don’t hesitate to invest a bit more for higher-quality filters; your health and system longevity will thank you.
I hope my buying guide helps you pick the perfect 23 x 20 x 1 air filter for your home!
Author Profile
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Ronald Brown is the voice behind mwanakin.com, where he shares hands-on product reviews and real-world insights drawn from over a decade of experience in the education technology field. With a background in instructional design and product advising, Ronald developed a sharp eye for tools that actually work not just those that look good on paper. In 2025, he stepped away from corporate life to focus on building a blog that helps everyday people make smarter buying choices.
Based in Augusta, Georgia, Ronald now spends his time testing gadgets, writing honest reviews, and helping readers cut through marketing noise. Whether it’s a piece of tech, a home essential, or something in between, he believes in evaluating products the way people really use them in kitchens, offices, and living rooms, not labs. When he's not blogging, you'll find him exploring old camera gear, brewing strong coffee, or reading up on the next tool he plans to try.
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