These Aerostar MERV 11 filters work great! They fit perfectly and help keep dust, pollen, and pet dander under control. I noticed improved air quality and less buildup in my HVAC system. The 6-pack is a great value, lasting months. Easy to install and durable—definitely recommend for anyone needing reliable air filters!

With wildfire season coming I purchased these to help pull some of the smoke out of the air while helping keep the house cooler this summer.They are working great and fit perfectly.

I recently purchased the Aerostar 18x18x1 MERV 11 Pleated Air Filters for my AC and furnace, and I am extremely pleased with their performance. The actual size fits perfectly, and the MERV 11 rating means it effectively filters out microscopic particles like dust mites, pollen, pet dander, and even smoke, making a noticeable difference in my home's air quality.Installation was straightforward, and I appreciate that these filters are a cost-effective step towards maintaining a healthier home environment. I plan to change them every 60 to 90 days as recommended, and possibly more frequently during peak summer and winter months.The synthetic electrostatic media used in these filters ensures high efficiency while maintaining low air flow resistance, which is a big plus. Knowing that they are manufactured by Filtration Group, a world-leading supplier of filtration solutions, adds an extra layer of confidence in their quality and effectiveness.Overall, these filters are a great value and have significantly improved the air quality in my home. Highly recommend them for anyone looking to keep their indoor air clean and healthy!

They seem to work well. Be sure to insert them right side up. There is an indicator on the filter how to orient them towards the direction of air flow. The sizes spec'ed of air filters is wonky. These fit fine but I needed to press them quite firmly to get them in. Will buy again. With one inch filters they get dirty quicker so maybe you need to change them every 3 months. Without question you should change them once a year at least.

Clean air for your home, health, and pets is important and something you should never have to worry about or compromise. Accessibility to the correct, high-quality air filter for your HVAC (heating, ventilation, and air conditioning) system should be easy and painless; something you can bookmark or note and save for each time you need to order refills.This pleated replacement air filter delivers clean air by replacing your air system’s vent intake filter. It is designed to work with most home and office AC and furnace systems with compatible and custom intake vent sizes, filtering out dust, pollen, bacteria, allergens and micro-allergens, and other airborne particles to deliver great indoor air quality and odor reduction for healthy living.This particular brand and construction is reliable, impressive, and high-quality as they state and I am pleased with its performance (which you can tell when it's time to replace the filter and you see just how much gunk it caught and saved your system and you (and your pets) from inhaling.I change my air filter once a month then re-order when I've used all 6. I was already familiar with the Aerostar brand and this product from having previously ordered and used them. I last ordered my replacement 6-pack from Amazon on Friday, April 28th, 2023.I have now used a total of 7 of these, and air filters in general are usually more expensive.Amazon turned out to be the best value with the 6-pack being $67.90 (+$5.09 tax = $72.99 total cost), in-stock and available, which I was willing to pay for the convenience and Prime 2-day delivery and return policy.I personally vouch and advocate for and recommend this air filter from personally and consistently seeing such satisfying results after many months of use now. I will continue to order it from Amazon when I need replacements. I do not think you will be disappointed with the results!

Received quickly. I've been using the Aerostar filters Merv 11 for two years. I have used other brands and I have discovered that the Aeorstar cardboard frame is more sturdy than cheaper brands or even common store brands like 3M. My furnace and A/C has a very powerful 2-stage fan that will cause cheaper/flimsy brands to become warped which allows dust to pass by the filter. The Aerostar filter is more effective at capturing dust and I change them every 6 to 7 weeks. If I leave them in for longer, the filter becomes clogged and dust starts to escape around the edges. At roughly $15 per filter it is worth it to change them more often and keep your house really clean.

I am no expert, but these seem to perform well and allow adequate airflow for my ac. They were shipped quickly and sized as described. No complaints.

Ok. So I am VERY particular on things like furnace filters. It drives my wife nuts how much I get focused on research for car waxes and furnace filters and even the chemical needed to clean the outdoor AC Condenser fins lol. I rarely post reviews but I wanted to make this very basic to cover what my wife says is important and what my reluctance-concern was when I submitted order and had hope many of the reviews were wrong on...First: The filters are NOT undersized. There are two things to look at on furnace filter sizes. The first thing is make sure you have the correct filter size to begin with! I can't tell you how many times I have talked to people (My brother in law owns a large HVAC company) at his company picnics etc that just flat out think there is no difference between a 20 3/8" filter and a 20" filter. You need to be sure direct from the manufacturer-that you have the exact sizing of the appropriate filter. Number two is they have two sizes listed in the product listing. This is true for 3rd party filter websites, Amazon, other retailers. The first is the "size of the filter" and then the "actual size of the filter". You need to realize that the manufacturer size is the "size of the filter" you need to match that up. What you need to also understand with these cardboard disposable filters is that the DEPTH measurement will not be the same. SO---The filter saying you need a 19 7/8" filter by 21 1/2" by 1" will fit the filter that is listed as such. What you will get delivered is one that is 19 7/8" by 21 1/2" by .75". That doesn't make it undersized lol. That's what you get. If you go to a big box retailer that's what they will have too. If you make sure the manufacturer size is what you got for the first two measurements, the 19 7/8" by 21 1/2",,,,,,the filter you get will be EXACTLY that. It is thinner at .75" though. THAT IS NORMAL. Measure one at big box stores, this is how it works. If it's too small, you ordered the wrong one in the first place/not shopping the right size.Second: I am thoroughly impressed with the top of the filter (where it has the cardboard going across in a diamond shape type pattern. I should have provided a picture of other competitors but this one is matching similar structure/strength as the big name brand ones. The ones I have been using (a diff brand than these) for the last 6 months, are definitely lesser quality and I can see that.Third: I change my filters every 60 days, have it written on my planner and a calendar reminder. These will do the trick, the quality is awesome and last just as long. The resistance for air flow appears to be spot on the merv rating in which they provide.Fourth: The packaging. These came in PERFECT condition. Keep in mind they are really thin chicken wire type skeleton as they all are. The way it was packed, there was no phsyical damage that will have any measurable impact on the effectiveness of this filter.I am really impressed and pleased. A great buy for the price. I have NO problem recommending these filters to people. I am sure for far more money and a very technical analysis I could come up with better options but again-----in this price range, and what you actually get delivered -I couldn't be happier. Great value for the money, for those that change them every month, there is no reason to spend 12-30 dollars a filter. Just get the correct merv rating for what you need, make sure the width and length are the RIGHT/Correct measurements. And you are set!

Good price and good product.

Good quality and best price.