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3M Filtrete Allergen Reduction 1200 MPR HVAC Furnace Air Filter (12x30x1) Expired

$19.65
$46.37
+37 Deal Score
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Walmart has 4-Pack 3M Filtrete Allergen Reduction 1200 MPR HVAC Furnace Air Filter (12x30x1, 1142DC-4) on sale for $19.65. Shipping is free with Walmart+ (free 15-day trial available) or on $35+ orders.

Thanks to community member jugiwax for finding this deal.

About this product:
  • MERV 11 Rating
  • 3-month pleated 1" home air filters for your furnace, air conditioner or HVAC system.
  • Attracts and captures particles such as lint, pollen, dust, pet dander, smoke and smog
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Edited July 24, 2021 at 05:54 PM by
https://www.walmart.com/ip/Filtre...ected=true

QA Note: The only apparent size left for under $20 is the 12x30x1 size.
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High merv filters in your AC are garbage. Your AC isn't an air purifier. You're restricting your airflow and trashing your AC in the process.
·
very limited and unusual sizes:

10x20x1
12x20x1
12x30x1
14x14x1
14x18x1
25x25x1
·
Modern blowers are designed to handle higher Merv filters. With deeper/multiple pleated filters, the restriction is minimal and no problem.

Check your HVAC system, it should state what type of filters it's designed to handle.
·

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Joined Jan 2005
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> bubble2 7,002 Posts
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energyx
07-25-2021 at 10:29 AM.
07-25-2021 at 10:29 AM.
Quote from rollins88 :
High merv filters in your AC are garbage. Your AC isn't an air purifier. You're restricting your airflow and trashing your AC in the process.

Yep. MERV 7 or 8 max. I don't get why people think their air handler should be filtering pollen. It's there to keep the blower and evaporator clean and that's about it.
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sd_junky
07-25-2021 at 10:39 AM.
07-25-2021 at 10:39 AM.
Merv 8 should be suffice for most homes. Replace every 2 months. Unless you run the AC for 75% of the time for that month. Unless you are 💯 germaphobic go with a higher Merv but that will make your furnace run harder.
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fourml8r
07-25-2021 at 10:55 AM.
07-25-2021 at 10:55 AM.
Quote from rollins88 :
High merv filters in your AC are garbage. Your AC isn't an air purifier. You're restricting your airflow and trashing your AC in the process.
this is not correct. higher rated filters have a lot more surface area (From the extra pleats) which makes up for the filtering capacity. attached is actual data showing the difference is less than 5% airflow.
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Joined Jul 2016
L3: Novice
> bubble2 234 Posts
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Deals_For_Me
07-25-2021 at 11:03 AM.
07-25-2021 at 11:03 AM.
Sam's has other sizes for $5 off a pack of 4. Best price I have seen in sizes other than post here
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Joined Nov 2013
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> bubble2 1,688 Posts
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JONLIVE
07-25-2021 at 11:22 AM.
07-25-2021 at 11:22 AM.
Quote from rollins88 :
High merv filters in your AC are garbage. Your AC isn't an air purifier. You're restricting your airflow and trashing your AC in the process.

Which one u recommend??
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LiquidIce
07-25-2021 at 11:29 AM.
07-25-2021 at 11:29 AM.
There was a study done by the state of California and they found thicker filters don't necessarily filter better or provide significantly less resistance, but they found the latest high flow MPR 1900 filters from filtrete provided some of the least resistance even after running it for awhile and it came down to the number of pleats. I'm not an expert here, but it countered the thought that lower MPR is always better for resistance and thicker filters always have less resistance.

Link for reference: https://efiling.energy.ca.gov/Get...ntId=27716
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Last edited by LiquidIce July 25, 2021 at 11:40 AM.
Joined Sep 2011
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> bubble2 1,940 Posts
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santy83
07-25-2021 at 11:43 AM.
07-25-2021 at 11:43 AM.
Does the thickness matter? Looking for cheaper alternative for this -

https://www.amazon.com/Honeywell-...327&sr=8-5
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Joined Nov 2013
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Rand4
07-25-2021 at 11:46 AM.
07-25-2021 at 11:46 AM.
Quote from GreenPanther4395 :
Modern blowers are designed to handle higher Merv filters. With deeper/multiple pleated filters, the restriction is minimal and no problem.

Check your HVAC system, it should state what type of filters it's designed to handle.
it depends sometimes they retrofit a modern furnace into a janky setup.. and dont go the extra mile. pretty sure I'd freeze up the coils if I used merv 13 in my 16x25x1 setup.

For an extra 10min of work they could have made it accept the 4" wide ones..
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Bob64
07-25-2021 at 12:03 PM.
07-25-2021 at 12:03 PM.
Quote from fourml8r :
this is not correct. higher rated filters have a lot more surface area (From the extra pleats) which makes up for the filtering capacity. attached is actual data showing the difference is less than 5% airflow.

Depends on the brand. Some brands don't have the extra pleats. Check out projectfarm's video on this: https://www.youtube.com/watch?v=RkjRKIRva58
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HIDDENbritdude07-25-2021 at 12:06 PM.

This comment has been rated as unhelpful by Slickdeals users

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HIDDENFishX07-25-2021 at 12:13 PM.
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markymarkxy
07-25-2021 at 12:22 PM.
07-25-2021 at 12:22 PM.
Quote from rollins88 :
High merv filters in your AC are garbage. Your AC isn't an air purifier. You're restricting your airflow and trashing your AC in the process.

I always use the cheapest filters possible but my hvac guy said to use high merv filters because the cheap ones won't catch all the particles and the particles that get through will have an impact on the motor?
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fourml8r
07-25-2021 at 12:39 PM.
07-25-2021 at 12:39 PM.
Quote from Bob64 :
Depends on the brand. Some brands don't have the extra pleats. Check out projectfarm's video on this: https://www.youtube.com/watch?v=RkjRKIRva58

The vast majority of high filtration units are pleated.
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LiquidIce
07-25-2021 at 12:39 PM.
07-25-2021 at 12:39 PM.
Quote from britdude :
spam alert !!!
Why is it spam?

Has that link been debunked somewhere? I figured it was done by the state of California, so it would be independently tested and reputable.

Other people are saying the same that filters with a higher number of pleats help to reduce the airflow restriction despite better filtration.
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Last edited by LiquidIce July 25, 2021 at 12:43 PM.

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BostonBatman
07-25-2021 at 12:52 PM.
07-25-2021 at 12:52 PM.
20x20x1 filtrete 1900 are 14.69/ea when you buy4 or more at lowes.
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