Contents
Choosing the cheapest air filter can be tricky. The Amazon Basics 16x20x1 Air Filter 6-Pack is our best overall pick due to its MERV 8 rating and effective allergen control. For those looking to save money, the Amazon Basics 12x12x1 Air Filter 6-Pack offers a solid option, but it has a lower MERV rating. Many buyers face the choice between higher filtration efficiency and a lower cost. This page provides insights to guide your decision.
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The Top 8
Top 8 Air Filters Reviewed in Detail
Here we review several air filters to help you find the best option.
1. Best Overall
Amazon Basics 16x20x1 Air Filter 6-Pack, MERV 8 AC Furnace Filters, Allergen Control , Removes Dust, Lint and Pollen, Electrostatic (Actual Size: 15.75" x…
- SIZE & COMPATIBILITY: Nominal 16x20x1 (Actual 15.75 x 19.75 x 0.75 in). Select nominal size based on your current filter’s frame or measurements. Fits standard furnaces, ACs & HVAC return grilles
- ENHANCED AIR QUALITY: Merv 8 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home
- IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear
- DURABLE CONSTRUCTION & EASY INSTALL: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance. Insert with the airflow arrow pointing toward the furnace/blower (away from the return grille) for a snug fit
- ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns
- CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days
The Amazon Basics 16x20x1 Air Filter 6-Pack is our best overall choice. It features a MERV 8 rating, which captures common household irritants like dust and pollen. This filter is designed to fit standard HVAC systems, ensuring you get the right fit. Compared to other picks, this one provides excellent allergen control while remaining budget-friendly. It is ideal for general households with moderate air quality needs. However, its MERV rating may not be sufficient for those with severe allergies. For those needing higher filtration, consider options with higher MERV ratings.
Pros
- MERV 8 rating effectively captures dust, lint, and pollen.
- Fits standard furnace and AC systems.
- Value pack includes six filters for convenience.
Cons
- MERV 8 rating may not filter fine particles effectively.
- Less suitable for homes with severe allergies.
Best for: General households needing decent air quality. Not ideal for: Homes with severe allergies.
A reliable choice for typical indoor air quality needs.
2. Best for Small Spaces
Levoit Air Purifier for Home Pets Hair Allergens in Bedroom Quiet Purifiers
- WHY CHOOSE AHAM VERIFIDE AIR PURIFIERS: AHAM (Association of Home Appliance Manufacturers) is an ANSI-accredited organization that sets strict standards for appliance performance. Air purifiers with the AHAM VERIFIDE seal have been independently tested for air cleaning performance and energy efficiency. When you choose an AHAM certified air purifier, you’re choosing a product trusted for reliable and effective indoor air quality improvement
- HIGH-PERFORMANCE AIR PURIFICATION: A powerful 56W high-torque motor and 143 CFM CADR delivers fast, effective cleaning. The Levoit Original Filter is HEPA-grade while operating in Sleep Mode (Based on IEST RP C001.7). Ideal for home, bedroom, or office
- AHAM VERIFIDE, PROVEN PERFORMANCE: AHAM VERIFIDE with a CADR (Clean Air Delivery Rate) rating of 143 CFM for smoke, 153 CFM for dust, and 167 CFM for pollen—refreshing air in a 222 ft² room 4.8 times per hour and a 1,073 ft² room once per hour
- GENUINE REPLACEMENT FILTERS: For the best performance and longest lifespan, use official Levoit filters designed specifically for Levoit air purifiers. Levoit replacement filters ensure the best fit and high-efficiency filtration, while off-brand filters may be unreliable and may damage your Levoit air purifier
- FIND COMFORT: Our filter has strong filtration performance of fine particles. 99.97% filtration efficiency for 0.1 to 0.3μm airborne particulates, including pollen, dust, and animal dander allergens. Tested by an independent lab
- WHISPER-QUIET AIR CLEANER: Select Sleep Mode at night and forget all about your air purifier while you sleep. QuietKEAP Technology reduces noise levels to a near-silent 24dB in Sleep Mode
- UNDISTURBED OPERATION: The display lights can be turned off to enjoy a perfect night without being distracted by the light. The display also features a timer for 2, 4, 6, or 8 hours as well as a check filter indicator
- CERTIFIED SAFE FOR HOME USE: The Core 300-P is AHAM verified, FCC Certified, ETL Listed, and CARB Compliant for California indoor air quality standards. Notes: The voltage of the air purifier is 120V and is suitable for use only in the United States
The Levoit Air Purifier is designed for small spaces, making it our best pick for this category. It is AHAM Verified, ensuring it meets high air cleaning standards. The compact design allows it to fit in tight spots while still covering a significant area. Compared to the Amazon Basics filters, this air purifier offers a higher level of air purification. However, it may not be as cost-effective for larger areas. Those looking to improve air quality in a small room should consider this option.
Pros
- AHAM Verified for performance and efficiency.
- Compact design fits easily in small spaces.
- Reduces allergens and pet hair effectively.
Cons
- Not ideal for large rooms or open areas.
- Requires electricity to operate.
Best for: Small rooms needing air purification. Not ideal for: Larger spaces or whole-house use.
Perfect for compact areas where space is tight.
3. Most Versatile
Amazon Basics 20x25x1 Air Filter 6-Pack, MERV 8 AC Furnace Filters, Removes Dust, Electrostatic, Allergen Control (Actual Size: 19.75" x 24.75" x 0.75")
- SIZE & COMPATIBILITY: Nominal 20x25x1 (Actual 19.75 x 24.75 x 0.75 in). Select nominal size based on your current filter’s frame or measurements. Fits standard furnaces, ACs & HVAC return grilles
- ENHANCED AIR QUALITY: Merv 8 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home
- IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear
- DURABLE CONSTRUCTION & EASY INSTALL: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance. Insert with the airflow arrow pointing toward the furnace/blower (away from the return grille) for a snug fit
- ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns
- CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days
The Amazon Basics 20x25x1 Air Filter 6-Pack is known for its versatility. With a MERV 8 rating, it captures many air pollutants. This filter fits standard HVAC systems and offers good value. Compared to the 16x20x1 option, this filter is larger and suitable for bigger systems. However, it may not be the best choice for those needing higher filtration. If you have pets or allergies, a filter with a higher MERV rating may be a better fit.
Pros
- MERV 8 rating effectively captures common allergens.
- Fits standard furnace and AC systems.
- Value pack of six filters ensures convenience.
Cons
- Lower MERV rating compared to some competitors.
- Not ideal for serious allergy sufferers.
Best for: General use in larger HVAC systems. Not ideal for: Homes needing high allergen control.
A versatile choice for many standard HVAC systems.
4. Best Value
Amazon Basics 20x20x1 Air Filter 6-Pack, MERV 11 AC Furnace Filters, Dust, Pet, Allergen Control , Electrostatic (Actual Size: 19.75 x 19.75 x .75)
- SIZE & COMPATIBILITY: Nominal 20x20x1 (Actual 19.75 x 19.75 x 0.75 in). Select nominal size based on your current filter’s frame or measurements. Fits standard furnaces, ACs & HVAC return grilles
- ENHANCED AIR QUALITY: Merv 11 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner air in your home
- IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear
- DURABLE CONSTRUCTION & EASY INSTALL: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance. Insert with the airflow arrow pointing toward the furnace/blower (away from the return grille) for a snug fit
- ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns
- CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days
The Amazon Basics 20x20x1 Air Filter 6-Pack is the best value choice. With a MERV 11 rating, it captures even smaller particles than the MERV 8 options. This makes it suitable for households with pets or allergies. Compared to the MERV 8 filters, this one offers better filtration. However, it may not be the cheapest option available. If cost is your primary concern, consider the lower-rated filters instead.
Pros
- MERV 11 rating captures smaller particles effectively.
- Fits standard HVAC systems easily.
- Good value with a pack of six filters.
Cons
- Higher upfront cost compared to MERV 8 filters.
- May restrict airflow in some systems.
Best for: Households needing better allergen control. Not ideal for: Budget-conscious buyers looking for the lowest cost.
An excellent balance of cost and filtration efficiency.
5. Best Design
Simply 20x20x1 Air Filter, Merv 8, MPR 600, 6 Pack, Furnace Air Filter for HVAC (Actual Size: 19.75"x19.75"x0.75") DUST, Pet, & Allergy Control
- Universally Compatible: Measuring 20″ x 20″ x 1″, with an actual size of 19.75″x19.75″ x 0.75″, Simply Filters works with almost any brand. Comparable to 3M Filtrete MPR 600, Filterbuy AFB Silver, and Honey well FPR 5.
- Cleaner Air Everywhere: Our filters capture dust, mold, pet dander, and pollen in homes, offices, schools, hospitals, and commercial spaces, trapping 90% of airborne particles, promoting a healthier living environment with clean and fresh indoor air.
- Advanced Pleated Technology: With a higher pleat count than most retail, our meticulously crafted filters offer superior capture coverage, optimizing airflow and efficiency.
- Long-lasting Filtration & Easy Installation: Enjoy up to 3 months of resilient filtration. Hassle-free replacement for air conditioning units or HVAC systems. Follow airflow arrows and insert into the filter slot for central units or return grilles.
- Made in USA: Our filters are made using 100% American components, including recycled materials, ensuring superior performance and quality. Experience exceptional filtration and support local manufacturing.
The Simply 20x20x1 Air Filter 6-Pack is a strong contender for versatility. It features a MERV 8 rating and is compatible with various HVAC systems. This filter effectively captures dust and allergens. Compared to the Amazon filters, this one offers similar performance with a focus on compatibility. One limitation is that it may not filter out fine particles as well. If you have significant allergy concerns, consider a higher MERV rating filter.
Pros
- MERV 8 rating is effective for common household allergens.
- Universally compatible with many systems.
- Good value with a six-pack option.
Cons
- Lower MERV rating may not capture smaller particles.
- Might not suit those with severe allergies.
Best for: Households with general air quality needs. Not ideal for: Users needing high-efficiency filtration.
A reliable option for those looking for compatibility and value.
6. Best Heavy-Duty
VOOPNU Air Purifiers for Home, High Efficiency Filter Up to 1076 Ft², White
- Effortless Operation: Simplified control panel with intuitive design makes it easy to operate. No complicated setup—just one tap, and you’re on your way to cleaner air, saving time and letting you relax with ease
- Compact Yet Powerful: Covers up to 1,076 ft² while maintaining a compact size of just 6.69 x 6.69 x 9.84 inches. Its small frame makes placement a breeze—whether on your desk or in a corner, it’s ready to work hard wherever you need it (Laboratory Tested: Our air purifier efficiently cleans 250 ft² every 15 minutes, covering up to 1,076 ft² per hour)
- 360° Airflow & High Efficiency Filtration: The elegantly engineered 360° surround air intake, coupled with the sophisticated a triple-layer filtration system, meticulously captures an astounding 99.97% of airborne pollutants, transforming your living space into a sanctuary of purity and vitality
- Quiet with Essential Oil Option: Operates as quietly as 22dB, perfect for undisturbed sleep. The built-in essential oil tray lets you add 3–5 drops to infuse your space with soothing scents while enjoying purified air
- Fully Certified: Backed by DOE, ETL, FCC, CARB, CE, and ROHS certifications, our air purifier meets the highest standards for performance, giving you peace of mind with every use
- Genuine Replacement Filters: For optimal performance, use official VOOPNU replacement filters—precisely engineered for a perfect fit and strong purification. Off-brand filters may reduce efficiency or damage your purifier. Choose the Standard Edition for daily use or the Pet-Care Edition for pet owners and allergy-prone homes, capturing dander, hair, and aller-gens for cleaner, fresher air
- **Note: Air purifiers work most effectively with prolonged use. For optimal performance, we recommend running the unit continuously to fully benefit from its air-cleaning capabilities—especially in dusty areas or places with persistent odors. Regular, long-term use helps maintain cleaner air and improves overall air quality over time
The VOOPNU Air Purifier is a powerful option designed for larger spaces. It covers an area of up to 1,076 square feet, making it suitable for open areas. This purifier is compact, which helps it fit in tight spots. Compared to standard filters, this one offers higher purification efficiency. However, it may require more maintenance. If you are looking for a powerful solution, this option is worth considering.
Pros
- Covers up to 1,076 square feet effectively.
- Compact design makes it easy to place anywhere.
- High-efficiency filter captures many particles.
Cons
- Requires electricity for operation.
- May be too powerful for smaller spaces.
Best for: Large areas needing significant air purification. Not ideal for: Small rooms or tight spaces.
A strong choice for larger areas needing thorough cleaning.
7. Best Splurge
Amazon Basics 12x12x1 Air Filter 6-Pack, MERV 11 AC Furnace Filters, Dust, Pet, Allergen Control , Removes Pollen and Lint (Actual Size: 11.75" x 11.75" x…
- SIZE & COMPATIBILITY: Nominal 12x12x1 (Actual 11.75 x 11.75 x 0.75 in). Select nominal size based on your current filter’s frame or measurements. Fits standard furnaces, ACs & HVAC return grilles
- ENHANCED AIR QUALITY: Merv 11 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home
- IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear
- DURABLE CONSTRUCTION & EASY INSTALL: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance. Insert with the airflow arrow pointing toward the furnace/blower (away from the return grille) for a snug fit
- ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns
- CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days
The Amazon Basics 12x12x1 Air Filter 6-Pack is designed for those who want a compact solution. With a MERV 11 rating, it captures smaller allergens effectively. This filter fits standard systems with ease. However, its smaller size makes it less versatile for larger spaces. If you have a smaller HVAC unit, this could be a great fit, but it may not cover larger areas adequately.
Pros
- MERV 11 rating captures small particles efficiently.
- Fits standard HVAC systems easily.
- Good value with a six-pack option.
Cons
- Smaller size limits its use for larger systems.
- Not ideal for big rooms or open areas.
Best for: Small HVAC systems or tighter spaces. Not ideal for: Large rooms needing extensive coverage.
A compact option for those with smaller HVAC units.
8. Best for Beginners
Amazon Basics 12x12x1 Air Filter 6-Pack, MERV 8 AC Furnace, Dust, Pet & Allergen Control , Electrostatic (Actual Size: 11.75" x 11.75" x 0.75")
- SIZE & COMPATIBILITY: Nominal 12x12x1 (Actual 11.75 x 11.75 x 0.75 in). Select nominal size based on your current filter’s frame or measurements. Fits standard furnaces, ACs & HVAC return grilles
- ENHANCED AIR QUALITY: Merv 8 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home
- IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear
- DURABLE CONSTRUCTION & EASY INSTALL: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance. Insert with the airflow arrow pointing toward the furnace/blower (away from the return grille) for a snug fit
- ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns
- CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days
The Amazon Basics 12x12x1 Air Filter 6-Pack is a great choice for beginners. It features a MERV 8 rating, good for dust and allergens. This filter is easy to install in standard HVAC systems. Compared to higher-rated filters, it is more affordable but offers less filtration efficiency. If you are new to air filters, this one provides a basic option without overwhelming features.
Pros
- MERV 8 rating is suitable for general use.
- Easy to install in standard systems.
- Affordable option for first-time buyers.
Cons
- Lower MERV rating may not capture finer allergens.
- Not suitable for allergy sufferers needing advanced filtration.
Best for: First-time buyers needing a simple solution. Not ideal for: Those with serious allergy concerns.
A straightforward choice for newcomers to air filtration.
Air Filters Compared Side by Side
This table compares key features of different air filters. The columns show size, MERV rating, and specific benefits. You can use the cheapest air filter information to pick the right filter for your needs.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Amazon Basics 16x20x1 Air Filter 6-Pack | Best Overall | Amazon | $23.66 | Check |
| 2 | Levoit Air Purifier for Home Pets Hair Allergens in… | Best for Small Spaces | Levoit | $80.99 | Check |
| 3 | Amazon Basics 20x25x1 Air Filter 6-Pack | Most Versatile | Amazon | $26.72 | Check |
| 4 | Amazon Basics 20x20x1 Air Filter 6-Pack | Best Value | Amazon | $30.79 | Check |
| 5 | Simply 20x20x1 Air Filter | Best Design | MervFilters | $31.93 | Check |
| 6 | VOOPNU Air Purifiers for Home | Best Heavy-Duty | VOOPNU | $26.98 | Check |
| 7 | Amazon Basics 12x12x1 Air Filter 6-Pack | Best Splurge | Amazon | $21.07 | Check |
| 8 | Amazon Basics 12x12x1 Air Filter 6-Pack | Best for Beginners | Amazon | $22.87 | Check |
| 9 | Core Mini Replacement Filter for LEVOIT Core Mini,Core… | — | Cabiclean | $16.98 | Check |
| 10 | Amazon Basics MERV 5 AC Furnace Air Filter | — | Amazon | $23.85 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How We Reviewed
Where our data comes from
We gathered information from reliable sources like product listings, manufacturer websites, and customer reviews. We focused on the most common sizes and types of air filters available. This ensured we had up-to-date and accurate details for each product.
How we built this shortlist
Our shortlist features eight air filters based on popularity and effectiveness. We looked at over 20 products and considered features like size, MERV ratings, and allergen control. Only those meeting basic standards of quality and performance were included.
What we ruled out and why
We removed products that had low MERV ratings or poor customer feedback. Filters that were not compatible with standard HVAC systems were also excluded. This ensured we recommended only the most reliable options for consumers.
What we did not do
We did not conduct hands-on testing of any air filters. No lab measurements were taken, and we did not create scores or ratings. Our information is based on existing reviews and data from credible sources.
How often this page is updated
This page will be updated regularly to reflect new products and changes in the market. We plan to review the content every few months. This ensures that you always have access to the latest information on air filters.
What to look for
MERV Rating Explained
The Minimum Efficiency Reporting Value (MERV) rating shows how well a filter captures particles. Ratings range from 1 to 16. A higher number means better filtration. For example, MERV 11 filters capture smaller particles than MERV 8 filters. Choosing the right rating helps improve air quality.
Filter Size
When selecting an air filter, size is important. Filters come in various dimensions, like 16x20x1 or 20x25x1. You must choose the right size that fits your HVAC system. Check the size of your current filter or the manufacturer’s specifications to ensure a snug fit.
Type of Filter
Filters can be disposable or washable. Disposable filters, like those in our list, are easy to use but need replacement. Washable filters can save money over time but require regular cleaning. Consider your preference and comfort with maintenance when choosing a filter type.
Allergen Control
If you have allergies, select filters specifically designed for allergen control. Look for higher MERV ratings, like MERV 11 or 12, as they can trap pollen, dust, and pet dander. This is especially important in homes with pets or allergy sufferers.
Cost-Effectiveness
Finding the cheapest air filter is essential for budget-conscious buyers. However, cheaper filters may not always offer the best performance. Weigh the cost against the MERV rating and efficiency. A slightly higher investment in a better filter can lead to improved air quality.
How to Choose Air Filters
Understand Your HVAC System
Before choosing an air filter, know your HVAC system’s requirements. Look for the nominal size, which is usually printed on your old filter. Ensure the new filter fits snugly in the frame to maintain efficiency. A proper fit helps improve air circulation.
Choose the Right MERV Rating
Select a MERV rating based on your home’s air quality needs. For general use, a MERV rating of 8 to 11 is suitable. If you have allergies or pets, consider a higher rating. Ratings beyond 12 can trap smaller particles but may restrict airflow.
Evaluate Filter Type
Decide between disposable and washable filters. Disposable filters are convenient and easy to replace. Washable filters may save money in the long run but require maintenance. Choose the type that fits your lifestyle and willingness to clean.
Check Allergen Control Features
If allergy relief is a priority, opt for filters designed for allergen reduction. Look for features like electrostatic filtration, which effectively captures fine particles. Higher MERV ratings can also provide better allergen control, so choose carefully.
Balance Cost and Quality
While searching for the cheapest air filter, remember that cost shouldn’t be the only factor. A low-priced filter may not filter out harmful particles effectively. Look for a balance between price and performance to ensure good indoor air quality.
Frequently asked questions
What is a MERV rating?
MERV stands for Minimum Efficiency Reporting Value. It measures how effectively an air filter captures particles. Ratings range from 1 to 16, with higher numbers capturing smaller particles.
How often should I change my air filter?
You should change your air filter every 1 to 3 months. However, this can vary based on usage, pets, and allergies. Check your filter regularly for best performance.
What size air filter do I need?
To find the correct size, check the dimensions of your current filter. It is often printed on the frame. Make sure to select a filter that fits your HVAC system snugly.
Are expensive filters worth it?
Higher-priced filters often have better filtration. They can remove more allergens and pollutants. However, evaluate their MERV rating and effectiveness to ensure value for your needs.
Can I wash and reuse my air filter?
Some air filters are washable and reusable. However, most standard filters are disposable. Always check the manufacturer’s instructions to determine if your filter can be washed.
Shopping around? We have 24 more air filter guides for other budgets and use cases.
Sources and standards
Background reading we checked while putting this guide together:
- EPA guide to home air cleaners U.S. Environmental Protection Agency
- EPA radon guidance U.S. Environmental Protection Agency
About the author
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