Walmart has 6-Pack 23.5"x23.5"x1" Filtrete MPR 1000 MERV 11 Micro Allergen Defense AC Furnace Air Filters (AD40-6PK-1E) for $24.85. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.
Thanks to Deal Hunter phoinix for sharing this deal.
Features:
Engineered with 3M exclusive 3-in-1 technology to attract and trap microparticles while maintaining balanced airflow through your system.
MPR 1000 / MERV 11 rating effectively captures microallergens including pet dander, pollen, household dust, lint, smoke, and smog.
Electrostatic pleated filter media provides significantly better particle capture performance compared to basic fiberglass filters.
Designed for 1-inch residential HVAC, furnace, and air conditioner slots with a recommended replacement cycle of at least once every 90 days.
Integrates with the free Filtrete Smart App to scan barcodes and set up custom replacement countdown notifications.
Amazon has 6-Pack 23.5"x23.5"x1" Filtrete MPR 1000 MERV 11 Micro Allergen Defense AC Furnace Air Filters (AD40-6PK-1E) for $24.85 - 5% when you check out via Subscribe & Save = $23.61. Shipping is free with Prime or on orders $35+.
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Walmart has 6-Pack 23.5"x23.5"x1" Filtrete MPR 1000 MERV 11 Micro Allergen Defense AC Furnace Air Filters (AD40-6PK-1E) for $24.85. Shipping is free w/ Walmart+ (free 30-day trial) or on orders of $35+.
Thanks to Deal Hunter phoinix for sharing this deal.
Features:
Engineered with 3M exclusive 3-in-1 technology to attract and trap microparticles while maintaining balanced airflow through your system.
MPR 1000 / MERV 11 rating effectively captures microallergens including pet dander, pollen, household dust, lint, smoke, and smog.
Electrostatic pleated filter media provides significantly better particle capture performance compared to basic fiberglass filters.
Designed for 1-inch residential HVAC, furnace, and air conditioner slots with a recommended replacement cycle of at least once every 90 days.
Integrates with the free Filtrete Smart App to scan barcodes and set up custom replacement countdown notifications.
Amazon has 6-Pack 23.5"x23.5"x1" Filtrete MPR 1000 MERV 11 Micro Allergen Defense AC Furnace Air Filters (AD40-6PK-1E) for $24.85 - 5% when you check out via Subscribe & Save = $23.61. Shipping is free with Prime or on orders $35+.
Deal History includes data from multiple reputable stores, such as Best Buy, Target, and Walmart. The lowest price among stores for a given day is selected as the "Sale Price".
Sale Price does not include sale prices at Amazon unless a deal was posted by a community member.
With 4" filters, sure, absolutely, but with 1" filters there isn't enough room to make deep pleats, and you should stick with MERV8 or lower. With 4" furnace filters, then you have so much extra surface area to compensate with, that you can afford more restrictive media.
These Filtrete MERV 11 one inch filters stand out as a low price option for standard furnace use and for Corsi Rosenthal box builds. The 20 by 20 size is called out as especially attractive, and a larger size can even be trimmed to fit. The main tradeoff is airflow, since MERV 11 is described as more restrictive than MERV 8 and potentially harder on single speed HVAC systems. That makes them a solid fit when higher filtration matters and the system can handle it.
Shoppers whose system already uses 1-inch filters and can handle MERV 11, because the extra filtration is available without needing a thicker filter.
Households that only need basic blower protection, because the filter's higher MERV rating is aimed at finer filtration rather than simple dust and debris capture.
A 1-inch MERV 11 filter can be more restrictive than MERV 8 and may reduce airflow, increase HVAC strain, and clog faster. It is better suited to systems that can handle the extra resistance; 4-inch filters have more surface area to offset that restriction.
Yes, as long as one dimension is between 19 and 20 inches. The other dimension mainly changes the box height, so sizes like 20x20, 20x24, or even 20x36 can work.
The 20x20 size was described as the lowest price in history by a large margin, though shipping was estimated for early to mid-August. A different size, 16x20x1, was listed at $65.97 full price.
Yes. A larger filter can be trimmed to fit, and one buyer reported cutting a larger size for a furnace that uses two filters, then installing it successfully.
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Public service announcement: The VAST majority of homes use a traditional single speed on/off fan. If you check AI for the equipment you have, you will see that it says they are recommended for up to MERV8.
So why do you see higher MERV often promoted?
Because consumers are dumb, they think that a filters job is to filter and the better it filters the better it must be and the more they will pay. But the fact is that the higher the MERV the more restrictive it is jacking up your AC bills, reducing the airflow from the vents, potentially causing freezover, and clogging much faster than lower MERV filters.
Stick with MERV8 or below, they will perform better, protect your AC, and are cheaper to boot!
Go watch the project farm video on air filters. Most higher merv have more pleates giving more surface area and actually allow greater flow.
With 4" filters, sure, absolutely, but with 1" filters there isn't enough room to make deep pleats, and you should stick with MERV8 or lower. With 4" furnace filters, then you have so much extra surface area to compensate with, that you can afford more restrictive media.
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These Filtrete MERV 11 one inch filters stand out as a low price option for standard furnace use and for Corsi Rosenthal box builds. The 20 by 20 size is called out as especially attractive, and a larger size can even be trimmed to fit. The main tradeoff is airflow, since MERV 11 is described as more restrictive than MERV 8 and potentially harder on single speed HVAC systems. That makes them a solid fit when higher filtration matters and the system can handle it.
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Our community has rated this post as helpful. If you agree, why not thank
Our community has rated this post as helpful. If you agree, why not thank
So why do you see higher MERV often promoted?
Because consumers are dumb, they think that a filters job is to filter and the better it filters the better it must be and the more they will pay. But the fact is that the higher the MERV the more restrictive it is jacking up your AC bills, reducing the airflow from the vents, potentially causing freezover, and clogging much faster than lower MERV filters.
Stick with MERV8 or below, they will perform better, protect your AC, and are cheaper to boot!
Sign up for a Slickdeals account to remove this ad.
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!