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f12_26 | Staff 90.6K Views
Aug 1, 2021 9:28 PM

6-Pack Crisp AC / Furnace Air Filters MERV 8 (Various Sizes)

from $26

$25

& Moreat Amazon
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Deal Details
Amazon has Select 6-Pack Crisp Air Filters MERV 8 (Various Sizes) on sale below for prices from $24.77 > Now $26.02. Shipping is free with Prime or on orders $25+.

Thanks to staff member f12_26 for finding this deal.

Available:No longer available:

Editor's Notes

Written by megakimcheelove | Staff
  • About this deal:
    • This offer (16x25x1) is $10.22 lower (29% savings) than the next best available price for a 6-pack of similar filters from a reputable merchant with prices starting from $34.99
  • About this product:
    • It's recommended to change your filters every 90 days to maintain optimal filtrationMade in the U.S.A
    • Rated 4.6/5 (347 total ratings)
  • About this store:

Original Post

Written by f12_26 | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Select 6-Pack Crisp Air Filters MERV 8 (Various Sizes) on sale below for prices from $24.77 > Now $26.02. Shipping is free with Prime or on orders $25+.

Thanks to staff member f12_26 for finding this deal.

Available:No longer available:

Editor's Notes

Written by megakimcheelove | Staff
  • About this deal:
    • This offer (16x25x1) is $10.22 lower (29% savings) than the next best available price for a 6-pack of similar filters from a reputable merchant with prices starting from $34.99
  • About this product:
    • It's recommended to change your filters every 90 days to maintain optimal filtrationMade in the U.S.A
    • Rated 4.6/5 (347 total ratings)
  • About this store:

Original Post

Written by f12_26 | Staff

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Deal Score
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Top Comments

RonPaulFan
1.8KComments
481Reputation
Depends on the specific filter. 3M add more pleats which means more filter area.

The MERV 13 in the 3M brand has a lower pressure drop (air flow resistance) than their MERV 5, 7, 11, and 12.

3M MERV 5 - 0.23 pressure drop
3M MERV 7 - 0.24 pressure drop
3M MERV 11 - 0.23 pressure drop
3M MERV 12 - 0.22 pressure drop
3M MERV 13 - 0.19 pressure drop

https://www.iallergy.com/pages/co...te-filters
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cpc13
334Comments
82Reputation
It really depends on the HVAC system and what it's designed for. Lower end and older ones are typically not built to handle the higher MERV filters. Newer and better ones are built to handle it without issue, though. For example, my HVAC air handler has a sticker on it that specifically says:
Go to Comment
Evan55
6.2KComments
1.1KReputation
What a terrible thing that the slickdeals community informs and educates fellow slickdealers
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Aug 2, 2021 3:54 PM
273 Comments
Joined Jul 2007
tanookiumAug 2, 2021 3:54 PM
273 Comments

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It's common sense if there is the same amount of pleats then the higher merv would restrict airflow, but most higher merv filters have more pleats thus more surface area which allows more air flow evening out the loss of air flow.
1
Aug 2, 2021 4:04 PM
334 Comments
Joined Jul 2018
cpc13Aug 2, 2021 4:04 PM
334 Comments

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Quote from maxentropy View quoted comment :
Makes sense that higher MERV# chokes the AC but also keeps out small particles from recirculating-- that said what's the recommended "right" amount of balance of cleaning the return air vs not stressing the central air?

I've been using MERV 11 for 25+ years on the same AC. Curious what the experts say.
It really depends on the HVAC system and what it's designed for. Lower end and older ones are typically not built to handle the higher MERV filters. Newer and better ones are built to handle it without issue, though. For example, my HVAC air handler has a sticker on it that specifically says:
Quote :
F100F 2025
Size: 20" x 25"
Replacement Filter:
FC100A1037
Recommended Filter:
MERV 11
4
Aug 2, 2021 4:07 PM
334 Comments
Joined Jul 2018
cpc13Aug 2, 2021 4:07 PM
334 Comments

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Quote from tanookium View quoted comment :
It's common sense if there is the same amount of pleats then the higher merv would restrict airflow, but most higher merv filters have more pleats thus more surface area which allows more air flow evening out the loss of air flow.
Higher MERV filters don't just add more pleats, they're often thicker and they definitely do increase the air flow resistance. There's nothing wrong with going higher MERV as long as it's within reason and within the specs for the HVAC unit. Going too high for the HVAC will put additional stress on it, though.
2
1
Aug 2, 2021 4:09 PM
273 Comments
Joined Jul 2007
tanookiumAug 2, 2021 4:09 PM
273 Comments
Quote from cpc13 View quoted comment :
Higher MERV filters don't just add more pleats, they're often thicker and they definitely do increase the air flow resistance. There's nothing wrong with going higher MERV as long as it's within reason and within the specs for the HVAC unit. Going too high for the HVAC will put additional stress on it, though.
I agree, but I'm saying the higher surface area reduces the air flow resistance somewhat.
Aug 2, 2021 4:10 PM
334 Comments
Joined Jul 2018
cpc13Aug 2, 2021 4:10 PM
334 Comments

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Quote from HuxleyBarada View quoted comment :
Older system what MERV would be recommended?
Most common recommendation I've seen is around MERV 8. It provides some increased filtration over the "basic" cheap filters, while still being moderate enough that it won't tax most HVAC units. If you have a higher end system, it can likely support a little higher. You can always try searching for details on the unit itself, or googling for it. Mine (newer) has a sticker saying "Recommended Filter: MERV 11", for example.
1
Aug 2, 2021 4:13 PM
12.6K Comments
Joined Jan 2009
teaberryAug 2, 2021 4:13 PM
12.6K Comments
Calm down, MERV 8 is about a medium range for filters and pretty universal decent quality on filtration while not hurting most HVAC systems. You start going double-digit MERV, you better know what you're doing or have a hospital-level HVAC. Or you go to the fiber glass (MERV 4?) and it's not doing jack Smilie
Quote from jon_laura5 View quoted comment :
Oh No...here comes the AC know-it-alls explaining the good, the bad, and the ugly of MERV's, overworking your air handler, etc... Every home air filter thread on SD gets infected with them...
In for 12x24x1 . I wonder if this is the same ones from Woot sale a few weeks ago and they also didn't have 20x30x1 in the sale (or sold out). I got my 20x20x1 safely but the 12x24x1 was beat up beyond salvageable so I sent them back. Hoping better luck with this batch, and hoping for a sale on 20x30x1 since I need two of those for each change.
Last edited by teaberry August 2, 2021 at 09:24 AM.
1
Aug 2, 2021 4:21 PM
1.2K Comments
Joined Apr 2008
iguanaAug 2, 2021 4:21 PM
1.2K Comments
AC guys said Merv 7...this is Merv 8 ... whats one merv between friends? ... maybe ill keep a Merv 7 handy for when they visit
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Aug 2, 2021 4:36 PM
1.8K Comments
Joined Nov 2009
RonPaulFanAug 2, 2021 4:36 PM
1.8K Comments

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Quote from ph1aak View quoted comment :
This is accurate. The higher the MERV, the harder your system has to work to pull the air through it
Depends on the specific filter. 3M add more pleats which means more filter area.

The MERV 13 in the 3M brand has a lower pressure drop (air flow resistance) than their MERV 5, 7, 11, and 12.

3M MERV 5 - 0.23 pressure drop
3M MERV 7 - 0.24 pressure drop
3M MERV 11 - 0.23 pressure drop
3M MERV 12 - 0.22 pressure drop
3M MERV 13 - 0.19 pressure drop

https://www.iallergy.com/pages/co...te-filters
6
Aug 2, 2021 4:40 PM
357 Comments
Joined Mar 2010
mxwjsAug 2, 2021 4:40 PM
357 Comments

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"Additional stress". In what sense? A MERV x is comparable to a y month old normal filter?

What kind of numbers are we talking here? How many watts? How much life reduction? How much additional maintenance?

This is what I'll tell you, last time I used cheap fiberglass filters, my whole house smelled like glue and I had to dust twice as much.

I like to defer to experts, but sometimes I feel like experts are just repeating what they hear or see in their own repair experience.

Two examples: 1. Water installation experts saying magnetic do not change how water leaves behind scale. Not true. Magnetic fields can help to keep calcium from sticking to metal.

2. Vacuum repair saying dyson break all the time when that is the only vacuum worth repairing.

A lot of time, repair people are seeing and remembering the worst case or biased cases. Who is likely yo get a repair? And how does thier lifestyle change what you see? And is it really the biggest deal. Am I better off straining HVAC than dusting twice a weeks and taking allergy medicine every day?
1
3
Aug 2, 2021 4:47 PM
193 Comments
Joined Feb 2014
larryo73Aug 2, 2021 4:47 PM
193 Comments
Quote from RonPaulFan View quoted comment :
Depends on the specific filter. 3M add more pleats which means more filter area.

The MERV 13 in the 3M brand has a lower pressure drop (air flow resistance) than their MERV 5, 7, 11, and 12.

3M MERV 5 - 0.23 pressure drop
3M MERV 7 - 0.24 pressure drop
3M MERV 11 - 0.23 pressure drop
3M MERV 12 - 0.22 pressure drop
3M MERV 13 - 0.19 pressure drop

https://www.iallergy.com/pages/co...te-filters
This is interesting. So they've achieved increased filtration with less resistance. Thank you for this. I personally need to read up more thoroughly when choosing my next filter.
Aug 2, 2021 4:50 PM
2.3K Comments
Joined Jul 2019
ShushiiTAug 2, 2021 4:50 PM
2.3K Comments
I just buy coffee filters and place them on a square
3
1
Aug 2, 2021 4:53 PM
193 Comments
Joined Feb 2014
larryo73Aug 2, 2021 4:53 PM
193 Comments
Quote from mxwjs View quoted comment :
"Additional stress". In what sense? A MERV x is comparable to a y month old normal filter?

What kind of numbers are we talking here? How many watts? How much life reduction? How much additional maintenance?

This is what I'll tell you, last time I used cheap fiberglass filters, my whole house smelled like glue and I had to dust twice as much.

I like to defer to experts, but sometimes I feel like experts are just repeating what they hear or see in their own repair experience.

Two examples: 1. Water installation experts saying magnetic do not change how water leaves behind scale. Not true. Magnetic fields can help to keep calcium from sticking to metal.

2. Vacuum repair saying dyson break all the time when that is the only vacuum worth repairing.

A lot of time, repair people are seeing and remembering the worst case or biased cases. Who is likely yo get a repair? And how does thier lifestyle change what you see? And is it really the biggest deal. Am I better off straining HVAC than dusting twice a weeks and taking allergy medicine every day?
Also interesting... I'd also prefer less dust and cleaner air myself. Maybe I will opt for a better filter and check it more frequently, as opposed to changing it at set intervals or when Nest thermostat recommends changing. Thanks all for the knowledge "and" common sense that I overlooked. This (to me at least), is one of those things that health and lifestyle outweigh the extra cost, so long as it isn't ridiculously extra.
Aug 2, 2021 5:07 PM
5.3K Comments
Joined Nov 2003
gergevAug 2, 2021 5:07 PM
5.3K Comments
Quote from RealDealSlayer View quoted comment :
Amazon brand = garbage
seems like these have only been sold for about 6 months
You do know that Amazon doesn't mfg these, right? They appear similar to Aerostar
http://aerostarairfilters.com/about-us/
Aug 2, 2021 5:56 PM
259 Comments
Joined Aug 2014
jan474Aug 2, 2021 5:56 PM
259 Comments
Quote from RonPaulFan View quoted comment :
Depends on the specific filter. 3M add more pleats which means more filter area.

The MERV 13 in the 3M brand has a lower pressure drop (air flow resistance) than their MERV 5, 7, 11, and 12.

3M MERV 5 - 0.23 pressure drop
3M MERV 7 - 0.24 pressure drop
3M MERV 11 - 0.23 pressure drop
3M MERV 12 - 0.22 pressure drop
3M MERV 13 - 0.19 pressure drop

https://www.iallergy.com/pages/co...te-filters
Wow! Only quarter of percent of pressure drop, it's really nothing for your AC.

And most of esteem audience here had me convinced better filters are bad..
Last edited by jan474 August 2, 2021 at 11:07 AM.
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Aug 2, 2021 6:22 PM
48 Comments
Joined Jan 2021
Woodbutcher123Aug 2, 2021 6:22 PM
48 Comments
I've been buying these for a while and they are Merv 8 and they are usually around 30 bucks for a six pack But right now they're 39. AIRx DUST 16x25x1 MERV 8 Pleated Air Filter - Made in the USA - Box of 6 https://www.amazon.com/dp/B01B5BC...UTF8&psc=1
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