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frontpage Posted by 00dahc • Jan 15, 2025
frontpage Posted by 00dahc • Jan 15, 2025

Costco Members: 2-Pack 3M Ultra Allergen Reduction 4" Deep Pleat HVAC Filters

+ Free Shipping

$30

$40

25% off
Costco Wholesale
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Costco Wholesale has for their Members: 2-Pack 3M Ultra Allergen Reduction 4" Deep Pleat HVAC Filters (Select Sizes) on sale for $29.99. Shipping is free.

Thanks to Community Member 00dahc for sharing this deal.

Available Sizes:
  • 20 x 25 x 4
  • 16 x 25 x 4
  • 16 x 20 x 4
  • 20 x 20 x 4

Editor's Notes

Written by SaltyOne | Staff
  • Rated 4.7 out of 5 stars from customer reviews.
  • $10 manufacturer's savings is valid 1/1/25 through 1/31/25. While supplies last. Limit 5 per member.

Original Post

Written by 00dahc
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for their Members: 2-Pack 3M Ultra Allergen Reduction 4" Deep Pleat HVAC Filters (Select Sizes) on sale for $29.99. Shipping is free.

Thanks to Community Member 00dahc for sharing this deal.

Available Sizes:
  • 20 x 25 x 4
  • 16 x 25 x 4
  • 16 x 20 x 4
  • 20 x 20 x 4

Editor's Notes

Written by SaltyOne | Staff
  • Rated 4.7 out of 5 stars from customer reviews.
  • $10 manufacturer's savings is valid 1/1/25 through 1/31/25. While supplies last. Limit 5 per member.

Original Post

Written by 00dahc

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Top Comments

For the love of god people, stop blindly parroting that Higher MERV = Higher pressure or work for your HVAC blower motor / system.

That is an uninformed rule of thumb that in many times couldn't be further from the truth.

The biggest factor in static pressure or pressure drop for a filter is the surface area of the filter. Generally, more pleats = higher surface area, but filter depth and design is also part of the equation.

Don't believe me? Here is a link to a very in depth study proving this. Among 3M filter lineup, the filtrete 1900 MERV 13 performs the best, while the filtrete 600 MERV 7 has the highest pressure (tied with filtrete 2400 MERV 14).

They also tested a variety of filter manufactures across MERV ratings in 1" and 2" depth and confirmed there generally is no correlation between MERV ratings and pressure. The MERV 13 Rated filters actually provided the best performance, and generally the filter depth or number of pleats has been found to be highly correlated to HVAC pressure (thicker / more pleats = better).

With that said, there are also many exceptions to that rule and deviations not only between manufacturers but also between product offerings if the same manufacturer. However, what they did find is that the filters performed within the pressure drop ratings provided by the manufacturer for that filter.

Long story short, the most important thing is to find the rating of your HVAC system for Pressure drop vs CFM / airflow and ensure you are getting a filter that meets the design loads. Feel free to put in a HEPA filter as long as it meets your requirements.
https://efiling.energy.ca.gov/Get...ntId=27687
What most people don't realize is that the purpose of the furnace filter is to keep the HVAC system clean from dust and other debris. It's not the job of the furnace filter to help with your allergies and the restrictive filters such as the one posted here are too tough on most of the household HVAC systems and could lead to premature component failures. If you're sensitive to airborne particles, use an appropriate air purifier.
And yet here I am buying this for the exact purpose of purifying my air in a corsi-rosenthal box.

47 Comments

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Jan 17, 2025
108 Posts
Joined Oct 2021
Jan 17, 2025
buekiebob
Jan 17, 2025
108 Posts
Quote from JollyBorder2428 :
For the love of god people, stop blindly parroting that Higher MERV = Higher pressure or work for your HVAC blower motor / system.

That is an uninformed rule of thumb that in many times couldn't be further from the truth.

The biggest factor in static pressure or pressure drop for a filter is the surface area of the filter. Generally, more pleats = higher surface area, but filter depth and design is also part of the equation.

Don't believe me? Here is a link to a very in depth study proving this. Among 3M filter lineup, the filtrete 1900 MERV 13 performs the best, while the filtrete 600 MERV 7 has the highest pressure (tied with filtrete 2400 MERV 14).

They also tested a variety of filter manufactures across MERV ratings in 1" and 2" depth and confirmed there generally is no correlation between MERV ratings and pressure. The MERV 13 Rated filters actually provided the best performance, and generally the filter depth or number of pleats has been found to be highly correlated to HVAC pressure (thicker / more pleats = better).

With that said, there are also many exceptions to that rule and deviations not only between manufacturers but also between product offerings if the same manufacturer. However, what they did find is that the filters performed within the pressure drop ratings provided by the manufacturer for that filter.

Long story short, the most important thing is to find the rating of your HVAC system for Pressure drop vs CFM / airflow and ensure you are getting a filter that meets the design loads. Feel free to put in a HEPA filter as long as it meets your requirements.
https://efiling.energy.ca.gov/Get...ntId=27687 [ca.gov]
You are absolutely correct. We have been using these Filtrete 1550 filters (MERV 12 rated) for many years... at the recommendation of the local HVAC company that installed our system 18 years ago. They also recommend switching them out every six months, which we've also done. These filters have performed as expected and we've encountered zero issues with any of our HVAC components. And honestly...if they created enough air flow restriction to damage HVAC components, they would not be sold by so many stores like Costco, Lowes, etc or recommeded by HVAC companies.
Jan 17, 2025
44 Posts
Joined May 2018
Jan 17, 2025
MattW6366
Jan 17, 2025
44 Posts
For any looking, they also offer the slim version. https://www.costco.com/3m-filtret...78004.html
My HVAC is made for 3.75" wide, not easy to find in a store. 20x25x4 is already out of stock, but 16x25 is still available.
Reference dimensions

16in. x 25in. x 4in.: 15.8 in. W × 24.5 in. L x 3.75 in. H/D
Weight: 1.93lb.

20in. x 25in. x 4in.: 19.8 in. W × 24.5 in. W × 3.75 in. H/D
Jan 17, 2025
1,267 Posts
Joined Jun 2010
Jan 17, 2025
q2n
Jan 17, 2025
1,267 Posts
Good price on these, and good filters. But the retail package doubles the price from institutional, which is 'naked'. The latter are the same filters (read markings on sides), but half the price bulk packaged (have bought on sale from Ace). So it's possible to cut your filter costs in half, just get used to buying and handling bare, store in plastic bag(s) or covered until needed.

Controversy over airflow resistance, and the related peace-of-mind issue, can be avoided by doubling the filter area (going to 2x smaller filters is an option). For any with the room and handy with snips and flangers (or willing to try), it's not a hard a job. But still have to remember to change the filters lol.
Jan 18, 2025
17 Posts
Joined May 2017
Jan 18, 2025
NoloProblemo
Jan 18, 2025
17 Posts
I have a Lennox heat pump, and am using Lennox 19L14 Merv 13 filters that are $48 a pop. How does this compare?
Jan 18, 2025
1 Posts
Joined Oct 2024
Jan 18, 2025
MilkTeaNoBoba
Jan 18, 2025
1 Posts
Howdy. I was able to buy 4 HDX Purples for $9.99 each at Home Depot ( rang it up on self checkout ). Only drawback is you have to buy 4. This helped us recycle our air all last week during the LA wild fires.

https://www.homedepot.com/p/HDX-1.../315964941
Jan 18, 2025
7,426 Posts
Joined Oct 2008
Jan 18, 2025
RumbleTheBison
Jan 18, 2025
7,426 Posts
Quote from dalehagedorn :
I just had a tenant call me on one of my rentals and he said the furnace was making alot of high pitched noises and thought a bearing or fan motor was going out. I sent hvac guy out and he said that it was an expensive merv 13 filter that hadn't been changed for awhile and it was restricting the air flow. Put new merv 10 filter in and the sound went away
Quote :
that hadn't been changed for awhile
That's the culprit as they should be doing it at least 2x year, if not 4x (if there's pets)
Pro
Jan 18, 2025
284 Posts
Joined Jan 2017
Jan 18, 2025
JWL418
Pro
Jan 18, 2025
284 Posts
From Consumer Reports review of this filter:
CR's take: Another good performer, the 4-inch-thick Filtrete Healthy Living Ultra Allergen 4 MPR1550 capably removes dust, pollen, and smoke with the HVAC system running on both its highest and lowest fan speeds, earning very good ratings. This filter provides nearly unrestricted airflow. Filtrete recommends that you replace this filter once a year, and at $29 per filter, that makes it one of the more economical filters in our tests.

CR's Buying Guide: https://www.consumerreports.org/a...ing-guide/

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Jan 19, 2025
1,102 Posts
Joined Dec 2005
Jan 19, 2025
seoultrain
Jan 19, 2025
1,102 Posts
Quote from NaPra :
What most people don't realize is that the purpose of the furnace filter is to keep the HVAC system clean from dust and other debris. It's not the job of the furnace filter to help with your allergies and the restrictive filters such as the one posted here are too tough on most of the household HVAC systems and could lead to premature component failures. If you're sensitive to airborne particles, use an appropriate air purifier.

4" depth filters should have enough surface area to be fine. Your system may vary, measure differential pressures to be sure.
Jan 20, 2025
67 Posts
Joined Sep 2016
Jan 20, 2025
SammyWinchester
Jan 20, 2025
67 Posts
Quote from VMasked :
Does that spray fiberglass everywhere?

As far as I can tell, from my personal experiences, no fiberglass or whatsoever. 4" makes a perfect box and can last (needs replacing) upto two years, or even longer if we run the fan less than 8 hours a day.
Jan 20, 2025
7,426 Posts
Joined Oct 2008
Jan 20, 2025
RumbleTheBison
Jan 20, 2025
7,426 Posts
Quote from JWL418 :
From Consumer Reports review of this filter:
CR's take: Another good performer, the 4-inch-thick Filtrete Healthy Living Ultra Allergen 4 MPR1550 capably removes dust, pollen, and smoke with the HVAC system running on both its highest and lowest fan speeds, earning very good ratings. This filter provides nearly unrestricted airflow. Filtrete recommends that you replace this filter once a year, and at $29 per filter, that makes it one of the more economical filters in our tests.

CR's Buying Guide: https://www.consumerreports.org/a...ing-guide/
I've bought this for the past year-ish and I do quarterly replacements as mine ends up looking just pure nasty after about 3 months. Just like a car filter, I could probably go the 12k miles on the type I buy that's rating for such while the next person who lives elsewhere in America may have to replace theirs every oil change.
Jan 22, 2025
380 Posts
Joined Apr 2019
Jan 22, 2025
Ajax77
Jan 22, 2025
380 Posts
Quote from JollyBorder2428 :
For the love of god people, stop blindly parroting that Higher MERV = Higher pressure or work for your HVAC blower motor / system.

That is an uninformed rule of thumb that in many times couldn't be further from the truth.

The biggest factor in static pressure or pressure drop for a filter is the surface area of the filter. Generally, more pleats = higher surface area, but filter depth and design is also part of the equation.

Don't believe me? Here is a link to a very in depth study proving this. Among 3M filter lineup, the filtrete 1900 MERV 13 performs the best, while the filtrete 600 MERV 7 has the highest pressure (tied with filtrete 2400 MERV 14).

They also tested a variety of filter manufactures across MERV ratings in 1" and 2" depth and confirmed there generally is no correlation between MERV ratings and pressure. The MERV 13 Rated filters actually provided the best performance, and generally the filter depth or number of pleats has been found to be highly correlated to HVAC pressure (thicker / more pleats = better).

With that said, there are also many exceptions to that rule and deviations not only between manufacturers but also between product offerings if the same manufacturer. However, what they did find is that the filters performed within the pressure drop ratings provided by the manufacturer for that filter.

Long story short, the most important thing is to find the rating of your HVAC system for Pressure drop vs CFM / airflow and ensure you are getting a filter that meets the design loads. Feel free to put in a HEPA filter as long as it meets your requirements.
https://efiling.energy.ca.gov/Get...ntId=27687

Now the main question here would be... how does.it compare to the filter on this post. Does anyone have any data on the number of pleats vs. say, the 1900 version?

edited some wrong stuff out.
Last edited by Ajax77 January 21, 2025 at 07:28 PM.