Item 1 of 2
Item 1 of 2
expired00dahc posted Jan 15, 2025 10:52 PM
Heads up, this deal has expired. Want to create a deal alert for this item?
+ Free Shippingat Costco Wholesale
Deal Details
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:
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.
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:
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.
Community Voting
Deal Score
+54
Good Deal
Bad Deal
Found by VaIentino
Forum Thread
64% off
Found by pennysave
Forum Thread
60% off
Found by DesertGardener
Forum Thread
40% off
Found by Rokket
Forum Thread
47% off
Found by phoinix
Forum Thread
50% off
Found by phoinix
Forum Thread
46% off
Top Comments
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.
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!
46 Comments
Sign up for a Slickdeals account to remove this ad.
Our community has rated this post as helpful. If you agree, why not thank NaPra
Our community has rated this post as helpful. If you agree, why not thank LJCRST
Our community has rated this post as helpful. If you agree, why not thank SammyWinchester
Sign up for a Slickdeals account to remove this ad.
Our community has rated this post as helpful. If you agree, why not thank shjaythi
Sign up for a Slickdeals account to remove this ad.
Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!