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  1. Geothermal Filters
  2. 18” x 24" x 1”

  3. 18x24x1 Air Filter

ClimateMaster 18x24x1 Geothermal Filter Compatible Replacement

Made in USA

  • SP-18x24x1-P11M6

  • 5 stars
  • (8)
List Price $95.98

Our Price: $47.99

Save: $47.99!
FREE
Shipping
Made to order (Ships in 1 business day)
Replace every 3 months
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  • Product Overview
  • Reviews
This item is made to order, non-returnable, and ships within 1 business day. Please check the actual dimensions listed below prior to ordering.
MERV 11 18x24x1 Furnace Filter Overview
  • MERV 11 rated per ASHRAE test standard 52.2
  • Actual dimensions of the filter are 17.5" x 23.5" x 0.75"
Compatible Geothermal Heat Pumps / Heating & Cooling Systems
OEM Brand OEM Series OEM Model OEM Filter Part Number OEM MERV Value
GeoComfort Compass Series Horizontal GS030 M1118241-6 11
Compass Series Horizontal GS036 M1118241-6 11
Compass Series Horizontal GT036 M1118241-6 11
Compass Series Horizontal H030 M1118241-6 11
Compass Series Horizontal H036 M1118241-6 11
Compass Series Horizontal H038 M1118241-6 11
Bryant / Carrier / ClimateMaster Tranquility 22 Digital (TZ) TZH024 M818241 8
Tranquility 22 Digital (TZ) TZH030 M818241 8
1 out of 1 people found this review helpful.
5.0 Stars

Great price

By Man from Tampa, FL on 8/4/2020 9:00:36AM

Best price for the size we needed!

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1 out of 1 people found this review helpful.
5.0 Stars

FILTERS - 3 SIZES

By Man in 50s from Clearwater, FL on 7/12/2020 12:23:21PM

ORDERED 3 SIZES OF FILTERS. ARRIVED WITHING 3 DAYS. ALL PERFECT FIT. SAVED THE LINK TO USE THIS COMPANY AGAIN.

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0 out of 0 people found this review helpful.
5.0 Stars

Quality product

By Man in 60s and over from West Palm Beach, FL on 10/23/2020 9:33:08AM

Custom order - arrived as promised. Repeat customer. Very satisfied.

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0 out of 0 people found this review helpful.
5.0 Stars

GREAT Filters

By Anonymous from palm beach gardens, FL on 9/21/2023 6:22:27AM

I only wish I had found All Filters sooner. I change my air conditioning filters monthly and have ordered from All Filters twice now. The quality of the filters, shipping, and price are all excellent. I imagine the customer service is great - but I have not had any reason to reach out to them. Thank you.

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0 out of 0 people found this review helpful.
4.5 Stars

Great product

By Male in 60s and over from Brandon , MS on 9/20/2023 10:44:46AM

Arrived as promised, easy to use. I will buy these filters again!

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0 out of 0 people found this review helpful.
4.5 Stars

Satisfied

By Man in 60s and over from Louisville, KY on 3/17/2021 7:51:04AM

Informative website, good price for custom size, and on-time delivery.

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0 out of 0 people found this review helpful.
4.0 Stars

Satisfied customer

By Male in 60s and over from Petal, MS on 10/4/2024 10:03:17PM

My first order was destroyed in shipping. When I received it it had been crushed beyond use. I contacted Allfilters and they reshipped another order to replace the first. I emailed pictures to them to prove damage and the situation was handled very well. The filters weren’t the quality I expected however the price was good and they will work.

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1 out of 1 people found this review helpful.
3.5 Stars

Highly Recommended

By Anonymous on 10/12/2019 9:45:44AM

great svc and great product and pricing!!

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