Skip to Main Content
home
Items (0)
|
My Account / Hi Guest
0
Items
New Air Filter
FAQS
My Account
Contact Us
Blog
Home
Air Sponge Refills
MicroSponge Refills (4 Pack) One years supply
Zoom in on Image(s)
Each package contains: (4) a one year supply of refills.
Play Video
Thumbnail
Thumbnail
Thumbnail
Add to Wish List
Email a friend
MicroSponge Refills (4 Pack) One years supply
5/5 rating
39
Review(s)
39
5
5/5 rating
1
5
Write a Review
Your Price:
$94.99
Retail Price
Retail Price:
$141.99
Your Savings:
$47.00
(33%)
MicroSponge Refills (4 Pack) One years supply
Questions about this item? Ask here.
Part Number:
ASFR4
Availability:
Custom Sized - Ships in 24 hours
Choose Options
Filter width
*
Filter width
8 [+$-5.00]
9 [+$-5.00]
10 [+$-5.00]
11 [+$-5.00]
12 [+$-5.00]
13
14
15
16
17
18
19
20
21
22
23
24
Width fractional
Width fractional
0
1/8
1/4
3/8
1/2
5/8
3/4
7/8
Filter length
*
Filter length
8 [+$-5.00]
9 [+$-5.00]
10 [+$-5.00]
11 [+$-5.00]
12 [+$-5.00]
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30 [+$10.00]
31 [+$10.00]
32 [+$10.00]
33 [+$10.00]
34 [+$10.00]
35 [+$10.00]
36 [+$10.00]
37 [+$15.00]
38 [+$15.00]
39 [+$15.00]
40 [+$15.00]
41 [+$15.00]
42 [+$15.00]
43 [+$15.00]
44 [+$15.00]
45 [+$20.00]
46 [+$20.00]
Length fractional
Length fractional
0
1/8
1/4
3/8
1/2
5/8
3/4
7/8
VOC - ODOR FILTER (optional)
VOC - ODOR FILTER (optional)
None
Activated Carbon (2) [+$29.95]
Zeolite (2) [+$29.95]
(1) Activated Carbon & (1) Zeolite [+$29.95]
Reminders
Free email reminders
I'm already signed up
No Thanks
Put me on the Waiting List
Quantity
+
-
Add to Cart
Submit
product tabs
Description
Product Features
Customer Reviews
Questions and Answers
It’s special blend of polymers create a high, stable active charge on every fiber of the air filter. This charge causes pollutants to stick to it like a magnet to steel. The charged fibers do not need to be as tightly woven as in ordinary filters, this means they will not restrict airflow. Microsponge has the highest efficiency and the lowest pressure drop of any charged media in the world.
Specifications:
MERV: 14
Arrestance : 97% @ .50" w.g.
Airflow: .17" w.g. @ 300 fpm
Thickness: 3/4"
Replace every: 90 days
Effective Against:
Lint, Dust & Debris
Pollen & Mold Spores
Pet Dander
Auto Emissions & Smoke
Bacteria & Tobacco Smoke
How to Videos
Hinge Frame Replacment
Snap Frame Replacment
HealthSmart Filter Refills:
Learn about the Air Sponge Filters
Healthier Air:
Provides maximum protection against airborne contamination
Includes:
(4) replacement pads
Saves Money:
Clean systems use less electricity, and breakdown less often
Rating Snapshot
Select a row below to filter reviews.
5 Stars
37
4 Stars
1
3 Stars
0
2 Stars
0
1 Stars
1
4 Stars
Clear Filter
?
Average Customer Ratings
4.9
View All Reviews
-
Reset
5/5 rating
Love these filters
I am so happy that one of the staff members at Filter Factory suggested these pleated filters...they are doing a great job..thanks
Did you find this helpful?
3 of 5
Found Helpful
Reviewed by:
maggie
from Weston, Florida on 6/10/2015
5
5
5/5 rating
Air Sponge Filter
These filters work great! What else can one say?
Did you find this helpful?
2 of 5
Found Helpful
Reviewed by:
Thomas Redman, Sr.
from Boca Raton, FL on 8/30/2015
5
5
5/5 rating
Review of Filters
We have purchased filters for our cold air return ducts for 15 years due to allergies in our family. We have regularly replaced them every 3 months and each time have been amazed by the amount of particles trapped by each filter. My wife agrees that without these filters she would be much worse. They seem to work effectively and are simple to install and change. We would prefer them to be less expensive, but that is the only less than positive statement one can make.
Did you find this helpful?
2 of 4
Found Helpful
Reviewed by:
Peter K. Underwood
from Virginia on 8/3/2015
5
5
5/5 rating
Foam Filters
I have been using these filters for over 5 years now, and I can only say that there are no better filters on the market than these filters!!! Every time I have my unit checked the tech wants to know where I get my filters, as he says he has never seen any better filters than the ones I have, and that I should never stop using them, as I will keep my unit a lot longer using these filters!!!
Did you find this helpful?
2 of 4
Found Helpful
Reviewed by:
(Verified Buyer)
Steven Dunniway
from Anderson, Ca on 6/5/2015
5
5
5/5 rating
MicroSponge Air Filters
I have been using the MicroSponge filters and custom made filter holder in my apartment return air grill for years. Works fantastic. I would highly recommend Filter Factory products.
Did you find this helpful?
1 of 2
Found Helpful
Reviewed by:
Craig Russell
from Maryland on 8/18/2021
5
5
5/5 rating
Indispensable
I’ve been using this product since about 2017, and I can rely on easy breathing at home. During the pandemic, I was able to reduce my allergy meds dramatically, taking a decongestant once every nine days, for example. I am also able to dust less frequently, and dust is very high in my area for much of the year. This is an indispensable part of my home and health maintenance routine.
Did you find this helpful?
1 of 2
Found Helpful
Reviewed by:
Judy A. Smith
from Lake Worth on 8/14/2021
5
5
5/5 rating
Bio Pleat Filters.
I have been using these Merv 14 Filters for years. The most impressive thing is the Air flow. The Filter Fast Merv 13, seems to slow down the flow. Not these babies. If you have allergies , use this.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
(Verified Buyer)
Victor Lockwood
from Las Vegas, NV on 7/26/2019
5
5
5/5 rating
A/C Filter
What I like most is the quality of the filters and the fast service is great.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Thomas Redman
from Boca Raton on 9/30/2018
5
5
5/5 rating
MicroSponge Filter
I've been using MicroSponge refills since 2001 in the same aluminum filter frame! I replace my filter every three months and it does an excellent job keeping my home air quality outstanding. Buying refills once a year from the convenience of home could not be easier.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Len Carmichael
from Prospect Heights, IL on 6/16/2018
5
5
5/5 rating
Air Sponge Review
We have been using Air Sponge Filters for many years, they are excellent in attracting and keeping the air in our home, our ducts and our hvac unit as clean as possible! worth every penny!
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Lynn Rhinehart
from Cape Coral FL on 3/16/2018
5
5
5/5 rating
review
Just received my third re-order and I could hardly wait because I procrastinated and there was dust everywhere. Now I can breathe. Custom frame with perfect fit and very efficient filters. Quick response to my order and equally fast delivery, even though most of Florida was under water. I hope that you did not suffer damage or loss and that more people learn about your great products.. There are no off-the-shelf filters available and our apartment custodians replace everyone else's filters with misfits that allow dusty air to bypass the change-every-month filters.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Victor Romulus Tulbure
from Rocklin, California on 9/19/2017
5
5
5/5 rating
Mr
My wife and I have medical issues that make it a necessity to find and use the highest quality air filtering systems available for both of our A/C units. Air Sponge fits our needs perfectly. The quality is excellent and consistent with every delivery. We have used the Micro Sponge for many years are very pleased with the product. We highly recommend this product to anyone concerned with the quality of air they breath.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Bob Raimondo
from Florida on 8/29/2016
5
5
5/5 rating
Retired
The MicroSponge filters are very efficient. The Filter Factory's reminder system and mail service makes keeping clean filters installed easy. The company that does routine maintenance on our heat/AC system is impressed with MicroSponge and told us he'd ordered some for his home.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Carol
from Palm Coast FL on 7/15/2016
5
5
5/5 rating
Great Filters
Online ordering is simple and I received my filters in 3 days. The filter collects a lot of dust and I imagine the tiniest particles. I have been very happy with the filters over the years.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Steve
from Connecticut on 7/9/2015
5
5
5/5 rating
Great filter and good customer service
I just got and installed my refill of the micro sponge filter. I found FilterFactory online a couple years ago when I first needed replacement filters. Both the first and the second orders were handled expeditiously and politely. They definitely reduce odors and dust, and I recommend them!
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
David Davenport
from Tarrytown on 6/1/2015
5
5
5/5 rating
MicroSponge Filters
I have used microsponge Filter for the past 4-years, with extremely good results. My wife also declares there is a noticeably reduction of dust on furniture and entire house. She is a clean freak so I take her judgment serious. Therefor I keep a years (4) supply.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Kenneth brewer
from Tennessee on 5/19/2015
5
5
5/5 rating
Allergies and Health Issues in Our Home
Don't hesitate. We have been buying these custom fit filters for over 14 years! We have numerous allergies and serious health issues in our home. Also elderly family,with chronic breathing issues, who visit. Also, I dislike dusting with a passion. These filters dramatically reduce the need to dust often. You won't regret ordering these for yourself and your family.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Susan
from Coral Springs on 11/3/2014
5
5
5/5 rating
Excellence in design and function
As an orthopedic surgeon with a wife who is severely both asthmatic and hypersensitive to most airborne odors, physical and chemical airborne contaminants and who had progressive COPD, I am understandably very concerned about the quality of the air filtration of our HVAC system. I have been using the Filter Factory microsponge filter system for some time now. I recently switched from the hinged frame to the magnetic snap frame to hold our microsponge filters in our HVAC system and find the snap frame easier for me to use. We have found no filtration system that can begin to compare to the microsponge system along with the Zeolite pad to remove VOC's. And with an odd sized filter frame requirement there was no other available filter system that could compare. Other companies may say they make custom sized filters But my personal experience is that these are lesser quality pleated filters in weak cardboard frames with two or more filters taped together with masking tape and which often collapse when subjected to the suction of the furnace blower. The Filter Factory custom aluminum frame forms an airtight seal with its rubber gasket and the filters work better than any of the many products on the market that we tried in years past to reduce dust along with physical and chemical contaminants in our home. Best investment you can make if you want clean air in your home for yourself and your family. I consider the cost a bargain for what we get.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Joel Schiffman
from Bethany Beach, DE and Cathedral City, CA on 12/2/2013
5
5
5/5 rating
Excellent product
I have been ordering the Air Sponge filters for some time now and never have I been disappointed in the product. It is of excellent quality and performs the job it was designed to do without fail. I depend on these filters to really clean the air because I have allergies. I don't think anything gets through these filters. They are truly like sponges that catch everything in the air in your home.
Did you find this helpful?
1 of 3
Found Helpful
Reviewed by:
Chuck Frazer
from Fort Lauderdale, FL on 4/23/2013
5
5
5/5 rating
MicroSponge Filters
My year's supply arrived. This will start us on the second year with the product. I have been very happy with the performance of these filters during the first year they have been used and look forward to the second year.
Did you find this helpful?
0 of 1
Found Helpful
Reviewed by:
Jack
from Vestal NY on 10/17/2021
5
5
5/5 rating
misleading
I received my Micro Sponge 4x pack today. your website states that there is 4 refills to a pack. so when I purchased this item that says 4 pack, one years supply. I was surprised to only find 4 refills in total and not 4packs of 4 micro-sponges filters for one years supply totaling 16 micro-sponges filters . as air-conditioning manufactures recommend you change your filter monthly 4 filters is not sufficient. So I seem to be short of 3 Packs? thank you for forwarding me the other 3 packs.
Did you find this helpful?
0 of 4
Found Helpful
Reviewed by:
bo
from miami on 8/28/2017
1
1
5/5 rating
Home Owner
Have been using the MicroSponge refill for 4 or 5 years. They are great and do a super job.
Did you find this helpful?
0 of 2
Found Helpful
Reviewed by:
George H. Hohmann
from Davie, FL on 1/20/2017
5
5
5/5 rating
None
Great product,
Did you find this helpful?
0 of 2
Found Helpful
Reviewed by:
Chris
from Chicago on 12/23/2016
5
5
5/5 rating
Self
Great filters, custom made to fit my application.
Did you find this helpful?
0 of 2
Found Helpful
Reviewed by:
Tim Connor
from Boca Raton on 10/13/2016
5
5
5/5 rating
Good Filter
Good product if you have allergies or other respiratory issues. Be sure the filter isnt too taxing on your air conditioning system.
Did you find this helpful?
0 of 2
Found Helpful
Reviewed by:
meg
from Tampa on 9/23/2014
5
5
Load More
Q:
is there top or bottom to the microsponge?
Asked by:
Gerald Nichols
- 1/2/2015
A:
Yes, the top of the Microsponge is the fuzzy side that is also the side the air will pass through first. The back in the side where the wire is, and this should face up against the mesh of the frame.
Was this answer helpful?
3 of 5
Customer(s) found this Answer helpful.
Answer provided by:
elissa1 (3/4/2016)
Submit an answer
1
Q:
(1)How do I re-order what I had previously?
Asked by:
Manuel Serra
- 1/12/2015
A:
The best way to order what you have ordered in the past is to log into your existing account. This will allow you to see past orders and repeat them. If you have any issue with logging into your account you are welcome to contact us at any time.
Was this answer helpful?
0 of 3
Customer(s) found this Answer helpful.
Answer provided by:
elissa1 (3/4/2016)
Submit an answer
1
Q:
Can I use these in the original (not hinged or Snap) frame?
Asked by:
Santiago Fuentes
- 4/2/2017
No Answers have been submitted yet.
Submit an answer
0
Q:
I need Biosponge refills for Health smart filters 23 x 47.1 do you have this size and how much would they be?
Asked by:
Lillian
- 7/3/2018
No Answers have been submitted yet.
Submit an answer
0
Q:
Need a new frame for my filters, how do I order?
Asked by:
Steven C Dunniway
- 2/2/2022
A:
On the top left hand side of the site is a button that says "New Air Filter". This is where you can order a new frame.
Was this answer helpful?
0 of 0
Customer(s) found this Answer helpful.
Answer provided by:
elissa1 (2/2/2022)
Submit an answer
1
Questions about this item? Ask here.
3
Clean Air Credits
94.99 Clean Air Credits will be rewarded to you when you buy this item.
Related Items
Replacement Leak-Guard Seal - Rubber - (6) Foot roll
$2.00
In Stock
(0)
Add to Wish List
Buy
AIRTEVA Air Conditioner Filter - with MicroSponge - Custom Size
$74.95
Custom Sized - Ships in 24 hours
(28)
Add to Wish List
Select Options
BioPleat Refills (4 Pack) | Furnace - AC Filter Refills One years supply
$74.99
Custom Sized - Ships in 24 hours
(16)
Add to Wish List
Select Options
Biosponge Refills (6 Pack) | For AIRTEVA & HealthSmart Furnace - AC Filters
$62.99
Custom Sized - Ships in 24 hours
(98)
Add to Wish List
Select Options
Biosponge Plus Refills (6 Pack) | For AIRTEVA & HealthSmart Furnace - AC Filters
$72.99
Custom Sized - Ships in 24 hours
(144)
Add to Wish List
Select Options
Accessories
Austin Air Baby's Breath Air Purifier
$434.99
Out of Stock
(0)
Add to Wish List
Austin Air Healthmate Jr. Air Purifier
$414.99
AUSTIN AIR NOT MANUFACTURING ANYMORE
(0)
Add to Wish List
Austin Air Healthmate Air Purifier
$714.99
In Stock
(0)
Add to Wish List
Select Options
Activated Carbon Air Filters (2 Pack)
$29.95
Custom Sized - Ships in 24 hours
(7)
Add to Wish List
Select Options
Zeolite Air Filters (2 Pack)
$30.65
Custom Sized - Ships in 24 hours
(0)
Add to Wish List
Select Options
PurCool 200 tablet jar condensate drain pan treatment
$42.95
Order by 5:00 pm EST for SAME DAY SHIPPING!
(1)
Add to Wish List
Buy
PurCool 1-3 Ton Strip Keeps A/C condensate drain pans clean and free flowing
$11.00
Order by 5:00 pm EST for SAME DAY SHIPPING!
(0)
Add to Wish List
Buy
ClenAir Odor Neutralizer, Gel Tubs 1 Pound
$14.25
Order by 5:00 pm EST for SAME DAY SHIPPING!
(1)
Add to Wish List
Buy
Recently Viewed Items
Turn History Off
[history_item_name]
[ITEMPRICE]
[ITEMPRICE]
Original price
[ITEMSALEPRICE]
Sale
Clear
×
My Account
TOP
Menu Links
Categories
×
Store Search
[ITEMPRICE]
