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Eragorn | Staff 34.1K Views
Jan 19, 2025 7:46 PM

[Starts Jan 29] Costco Members: 4-Pack 3M 2500 Series Filtrete 1" MERV 14 Filters $35 + Free Shipping

$35

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Starting January 29th, Costco Wholesale [costco.com] will have for their Members: 4-Pack 3M 2500 Series Filtrete 1" MERV 14 Filters (various sizes) on sale for $34.99. Shipping is free*

Available Filter Sizes: 14x20x1, 14x24x1, 14x25x1, 14x30x1, 16x20x1, 16x25x1, 20x20x1, 20x25x1, 20x30x1

About this Item:
  • Captures Pollen, Smoke, Bacteria & Viruses
  • Lasts up to 3 Months
  • For Residential Use Only
  • MPR 2500 has a rating of MERV 14
*Right now the items say shipping is included in the $49.99 price, but I'm not sure if they'll still be free shipping when the price is lowered to $34.99.This matches last May's +34 Frontpage price.
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Deal Details
Community Notes
About the Poster
Starting January 29th, Costco Wholesale [costco.com] will have for their Members: 4-Pack 3M 2500 Series Filtrete 1" MERV 14 Filters (various sizes) on sale for $34.99. Shipping is free*

Available Filter Sizes: 14x20x1, 14x24x1, 14x25x1, 14x30x1, 16x20x1, 16x25x1, 20x20x1, 20x25x1, 20x30x1

About this Item:
  • Captures Pollen, Smoke, Bacteria & Viruses
  • Lasts up to 3 Months
  • For Residential Use Only
  • MPR 2500 has a rating of MERV 14
*Right now the items say shipping is included in the $49.99 price, but I'm not sure if they'll still be free shipping when the price is lowered to $34.99.This matches last May's +34 Frontpage price.

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39 Comments

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Jan 20, 2025 1:03 AM
2.6K Comments
Joined Apr 2013
mja28Jan 20, 2025 1:03 AM
2.6K Comments
Quote from VMasked View quoted comment :
What do we need for wildfires?
Heavy smoke damage probably need to paint the whole house.lol
3
Jan 20, 2025 1:15 AM
121 Comments
Joined Mar 2015
MightyPezJan 20, 2025 1:15 AM
121 Comments
Quote from brucknerfan View quoted comment :
That's interesting. This box uses multiple filters. Any idea how often the filters for such a box would need to be changed under normal conditions?
That all depends on how long it's used each day, the air quality of where its located, fan speed, etc.
They don't get gunked up nearly as quickly as sticking one of these filters in the air in take for the furnace. You also don't need to change them until the are fairly dirty because the overall surface area makes them less prone restricting airflow to the point where the fan struggles.
Jan 20, 2025 1:32 AM
568 Comments
Joined May 2012
Arok79Jan 20, 2025 1:32 AM
568 Comments
Quote from professorxavier View quoted comment :
I think this is what I will do. I prefer to have microbial filtration.
I change mine every couple months as well. Zero issues with the 2500. Airflow will be just fine if you swap every two months.
Jan 20, 2025 2:35 AM
66 Comments
Joined Feb 2018
Bizadam7Jan 20, 2025 2:35 AM
66 Comments
I use those 20"x
Jan 20, 2025 3:27 AM
4.7K Comments
Joined Feb 2010
Splash15Jan 20, 2025 3:27 AM
4.7K Comments
Merv 8 only for home hvac systems unless you want to suffocate and break it.
1
1
4
Jan 20, 2025 3:36 AM
2K Comments
Joined Sep 2011
ThoreauHDJan 20, 2025 3:36 AM
2K Comments
I've never seen an A/C unit be able to not burn up on anything above MERV 8. I don't know why they sell these things. Maybe it's for an industrial lab environment or something? Clean room? I don't know, but I know turning your A/C into a block of ice and blowing it's fan and compressor is what's gonna happen with a MERV 14.
1
Pro
Jan 20, 2025 3:59 AM
339 Comments
Joined Jan 2009
Brett19648
Pro
Jan 20, 2025 3:59 AM
339 Comments
Quote from drawz View quoted comment :
I can find data that shows the 1900 has a reasonable pressure drop (Project Farm, state of California), but I can't find any measurements of the 2500 or 2200. I think 3M lists a spec somewhere, but can't find it at the moment.
Yes this is what I had read as well.

Just read the reviews on Costco for the 2500's and you'll have your answer. Lots of people having to call hvac techs to come to their house to service their system just to be told it was the restrictive filters causing the problem.

I ordered these a while back when they were on sale then did some further research and read reviews on Costco and Reddit, then immediately canceled my order. The pressure drop for the 2500 is significant and not good for the system when brand new. Will only get worse as they get clogged up.

This is a good deal for a product that's good on paper, but most people should not be using them.
Last edited by Brett19648 January 19, 2025 at 08:02 PM.
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Jan 20, 2025 5:32 AM
1.8K Comments
Joined Aug 2011
drawzJan 20, 2025 5:32 AM
1.8K Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from Brett19648 View quoted comment :
Yes this is what I had read as well.

Just read the reviews on Costco for the 2500's and you'll have your answer. Lots of people having to call hvac techs to come to their house to service their system just to be told it was the restrictive filters causing the problem.

I ordered these a while back when they were on sale then did some further research and read reviews on Costco and Reddit, then immediately canceled my order. The pressure drop for the 2500 is significant and not good for the system when brand new. Will only get worse as they get clogged up.

This is a good deal for a product that's good on paper, but most people should not be using them.
In an effort to quantify this, I was able to find some pictures of filters on ebay. For the 16x20x1 size, the initial resistance at 1110 CFM (the max it's rated for and in the ballpark of my furnace) is:
Filtrete 2500 - 0.53' WC @ 1100CFM
Filtrete 1900 - 0.41"
Filtrete 1500 - 0.47"
So the 1900 reigns supreme, but is this a practical difference? I have no idea. I have the 1500 now and I bet all of these ratings are better than high MERV filters from most brands.
1
Jan 20, 2025 6:46 AM
5 Comments
Joined Jul 2018
HoopsLaureateJan 20, 2025 6:46 AM
5 Comments
Quote from Brett19648 View quoted comment :
Yes this is what I had read as well.

Just read the reviews on Costco for the 2500's and you'll have your answer. Lots of people having to call hvac techs to come to their house to service their system just to be told it was the restrictive filters causing the problem.

I ordered these a while back when they were on sale then did some further research and read reviews on Costco and Reddit, then immediately canceled my order. The pressure drop for the 2500 is significant and not good for the system when brand new. Will only get worse as they get clogged up.

This is a good deal for a product that's good on paper, but most people should not be using them.
I had the same experience as you. Saw the deal at Costco, got excited because I just bought a home and Costco had the size filter I needed. Got home, looked up reviews on Costco, here, and Reddit, and they weren't good. When folks were having to call HVAC folks for repairs, yikes. Gratefully Costco's return policy is great.
Jan 20, 2025 1:04 PM
1.8K Comments
Joined Nov 2009
RonPaulFanJan 20, 2025 1:04 PM
1.8K Comments
Quote from Splash15 View quoted comment :
Merv 8 only for home hvac systems unless you want to suffocate and break it.
Pressure drop is the only practical information. The 1900's are MERV 13 and have less pressure drop than any MERV 8 I have seen.
Jan 20, 2025 2:26 PM
61 Comments
Joined Mar 2017
CTho9305Jan 20, 2025 2:26 PM
61 Comments
Quote from anort3 View quoted comment :
Any citation for that? Project Farm tested a bunch of filters a few years ago and the 3M 1900 was one of the least restrictive because of the larger number of pleats and larger surface area of the filtration media than most of the competition. This 2500 looks to have more pleats than the 1900 does. Once it gets dirty I could see an airflow restriction problem. Easily avoided by changing them before they get that way. I've been using the 2200s for years. I just change them every 2 months vs every three.
It may have more pleats, but it's likely made of an even more restrictive material and needs many more pleats to mitigate the increased resistance.
I picked up some of the 2500's last time they were on sale for a CR box (with an unusual fan for higher pressure drop) and they're great for that. https://en.m.wikipedia.org/wiki/C...enthal_Box
The label on the 16x25x1 filter(2.77sqft, ignoring the cardboard edge) states:
410CFM: 0.10", 820CFM: 0.25"., 1390CFM: 0.53"
Filters are normally rated at linear speeds of 300ft/min and 500 ft/min, which gives 831 CFM and 1385 CFM.
So at a standard 300 feet per minute, this filter's initial resistance is about 0.25", and at 500 fpm it's 0.53". I don't recall the 1900's numbers at the moment but I think it's <0.2" @ 300fpm.
Most HVAC contractors recommend you don't drop much more than 0.1" across your furnace filter for best performance.
Pretty much all filter manufacturers (note: not HVAC companies) say to replace filters when they reach 1" pressure drop. (So, if you're starting at 0.5" you have much less time before you drop another $$ on a new fancy filter).
There are a few other things to consider besides vague fear-based "how hard the blower works".
  • A blower working harder uses more energy, so you'll pay more on your electric bill (or get less airflow - worse heating / cooling performance). At typical efficiencies we could easily be talking an extra hundred watts.
  • Filters can only capture dust and particles that reach them. If you're serious about clean air, you'll likely get much better results by using a standalone filter per room.
  • Going for 100% capture in a single pass seems kind of pointless to me. Air will go through the filter multiple times, so as long as you're removing a significant portion each pass, it'll do a good job. And dirty air that leaks into the house, plus dust being stirred up or shed is constantly "re-contaminating" the rest of the house, so whether the air coming from your ducts is 100% clean or 90% clean seems unlikely to make much difference once it mixes into your rooms.
Anyway, I only use these for CR boxes that I use when there's wildfire smoke or some other reason PM2.5 is excessive AND when I can't get the 1900's on sale. In the furnace, MERV 13 or lower is perfectly great and they're good for smoke too, since you can push more air through the 1900 than the 2500.
Hope that's helpful.
1
Jan 20, 2025 3:14 PM
7.8K Comments
Joined Oct 2008
RumbleTheBisonJan 20, 2025 3:14 PM
7.8K Comments
Note: Costco has the 4 inch deep ones for the 20/25/4 for $30. I switch those out every 3 months and the air is pretty damn clean in my house.

Note: the purpose of a HVAC tech is to be able to see what you're doing and tell you "yes or no" to it. I think what happens online is we get caught up in the MERV ratings too much and not the actual use cases. Speak to your HVAC professional next time around and see what works for your system. My past one was older and I had to go with the paper thin filters that you can easily see our hand through. My new one? Shoot....
1
Jan 21, 2025 2:23 AM
3.5K Comments
Joined Feb 2010
balla123Jan 21, 2025 2:23 AM
3.5K Comments
Get your filters from zoro
I got my 20x20x4 for $8 each
Jan 22, 2025 2:40 AM
443 Comments
Joined Apr 2019
Ajax77Jan 22, 2025 2:40 AM
443 Comments
Quote from bxd20 View quoted comment :
I've emailed 3M tech support. The 1900 has the smallest pressure drop of ANY of their pleated filters in 1" size. Even compared to the lower rated ones like the 1000.

The reason is there are more pleats in the 1900 but they aren't terribly dense layers. This also proves to be helpful to not cause a drastic jump as they get dirty per Project Farm.

For me… it's either the 1900, or I go with spun fiberglass when I want the best flow and don't mind less filtration.
Any comparison with this 2500 in terms of pleat count?

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Jan 22, 2025 6:00 AM
208 Comments
Joined Sep 2011
Sulla52Jan 22, 2025 6:00 AM
208 Comments
Just had my furnace in my 3 year old house break and need a replacement high-heat limit sensor. HVAC guy said it had to have happened because of some type of significant airflow restriction. We keep the registers fully open at all times throughout the house. However, we did start using these filters last year to try to help our kid's allergies. Changed them regularly to avoid this exact problem. However, our heater still almost got burnt up from restricted airflow. Thankfully these things have sensors that shut the unit down to keep the house from burning down. We've also been in the middle of single digit temps while this failure occurred so the heater was having to run regularly. Just my anecdotal experience/2c. Unfortunately, we'll have to go back to a standard filter rating.

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