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Collection: Geothermal Air Filters

Discover premium geothermal air filters designed for optimal performance in your heating and cooling system. Our specialized filters ensure clean air circulation while maximizing energy efficiency. Available in multiple sizes including 18x18, 25x25, and 30x30 dimensions with MERV ratings from 8-13 for superior filtration.

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2 Inch (8 products)
12x20x2 (3 products)
18x18x1 (3 products)
18x18x2 (1 product)
18x20x2 (1 product)
18x24x2 (1 product)
20x20x2 (1 product)
20x24x2 (1 product)
25x25x1 (3 products)
30x30x1 (3 products)
Furnace Filters (17 products)
Geothermal (17 products)
MERV 8 (8 products)
MERV 11 (5 products)
MERV 13 (4 products)

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25x25x1 (3 products)
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30x30x1 Merv 8 Pleated Geothermal Furnace Filter - Case of 6

Sale

30x30x1 Merv 8 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 109.99 USD

Regular price ~~$ 189.95 USD~~ Sale price $ 109.99 USD
Unit price per

Sale
25x25x1 MERV 13 Allergy Elite Pleated Geothermal Furnace Filter - Case of 6

Sale

25x25x1 MERV 13 Allergy Elite Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 79.95 USD

Regular price ~~$ 109.95 USD~~ Sale price $ 79.95 USD
Unit price per

Sale
30x30x1 MERV 13 Allergy Elite Pleated Geothermal Furnace Filter - Case of 6

Sale

30x30x1 MERV 13 Allergy Elite Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 139.95 USD

Regular price ~~$ 189.95 USD~~ Sale price $ 139.95 USD
Unit price per

Sale
Atomic 20x24x2 MERV 8 Pleated Geothermal Furnace Filter - 6 Pack

Sale

Atomic 20x24x2 MERV 8 Pleated Geothermal Furnace Filter - 6 Pack

Vendor:
Atomic Filters

Regular price $ 54.44 USD

Regular price ~~$ 99.95 USD~~ Sale price $ 54.44 USD
Unit price per

Sale
Atomic 18x18x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Sale

Atomic 18x18x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 54.44 USD

Regular price ~~$ 99.95 USD~~ Sale price $ 54.44 USD
Unit price per

Sale
18x18x1 Merv 8 Pleated Geothermal Furnace Filter - Case of 6

Sale

18x18x1 Merv 8 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

1 total reviews

Regular price $ 47.99 USD

Regular price ~~$ 79.95 USD~~ Sale price $ 47.99 USD
Unit price per

Sale
Atomic 18x20x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Sale

Atomic 18x20x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

1 total reviews

Regular price $ 65.44 USD

Regular price ~~$ 99.95 USD~~ Sale price $ 65.44 USD
Unit price per

Sale
30x30x1 MERV 11 Pleated Geothermal Furnace Filter - Case of 6

Sale

30x30x1 MERV 11 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 124.99 USD

Regular price ~~$ 199.95 USD~~ Sale price $ 124.99 USD
Unit price per

Sale
Atomic 12x20x2 MERV 13 Pleated Geothermal Furnace Filter - Case of 6

Sale

Atomic 12x20x2 MERV 13 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 89.95 USD

Regular price ~~$ 105.95 USD~~ Sale price $ 89.95 USD
Unit price per

Sale
Atomic 12x20x2 MERV 11 Pleated Geothermal Furnace Filter - Case of 6

Sale

Atomic 12x20x2 MERV 11 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 81.95 USD

Regular price ~~$ 105.95 USD~~ Sale price $ 81.95 USD
Unit price per

Sale
Atomic 20x20x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Sale

Atomic 20x20x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 54.44 USD

Regular price ~~$ 99.95 USD~~ Sale price $ 54.44 USD
Unit price per

Sale
18x24x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Sale

18x24x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 54.44 USD

Regular price ~~$ 99.95 USD~~ Sale price $ 54.44 USD
Unit price per

Sale
Atomic 12x20x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Sale

Atomic 12x20x2 MERV 8 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 79.95 USD

Regular price ~~$ 99.95 USD~~ Sale price $ 79.95 USD
Unit price per

Sale
18x18x1 Merv 13 Allergy Elite Pleated Geothermal Furnace Filter - Case of 6

Sale

18x18x1 Merv 13 Allergy Elite Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 69.95 USD

Regular price ~~$ 79.95 USD~~ Sale price $ 69.95 USD
Unit price per

Sale
18x18x1 Merv 11 Pleated Geothermal AC Furnace Filter - Case of 6

Sale

18x18x1 Merv 11 Pleated Geothermal AC Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 59.95 USD

Regular price ~~$ 79.95 USD~~ Sale price $ 59.95 USD
Unit price per

Sale
25x25x1 MERV 11 Pleated Geothermal Furnace Filter - Case of 6

Sale

25x25x1 MERV 11 Pleated Geothermal Furnace Filter - Case of 6

Vendor:
Atomic Filters

Regular price $ 64.95 USD

Regular price ~~$ 109.95 USD~~ Sale price $ 64.95 USD
Unit price per

Sale

1
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