Collection: 18x18x1 Furnace Filters
Breathe easier with premium 18x18x1 furnace filters. Our selection includes MERV 8, 11, and 13 ratings to capture everything from dust to allergens. These high-quality filters improve air quality while protecting your HVAC system from harmful particles. Perfect for both standard and geothermal systems, our filters deliver exceptional performance for cleaner home air.
- 18x18x1 Merv 8 Pleated AC Furnace Filter - Case of 6
- Regular price
- $ 47.99
- Sale price
- $ 47.99
- Regular price
-
$ 79.95
Sold out - 18x18x1 Merv 11 Pleated AC Furnace Filter - Case of 6
- Regular price
- $ 59.95
- Sale price
- $ 59.95
- Regular price
-
$ 79.95
Sold out - 18x18x1 Merv 13 Allergy Elite Pleated AC Furnace Filter - Case of 6
- Regular price
- $ 69.95
- Sale price
- $ 69.95
- Regular price
-
$ 79.95
Sold out - 18x18x1 Merv 8 Pleated Geothermal Furnace Filter - Case of 6(1)
- Regular price
- $ 47.99
- Sale price
- $ 47.99
- Regular price
-
$ 79.95
Sold out - 18x18x1 Merv 13 Allergy Elite Pleated Geothermal Furnace Filter - Case of 6
- Regular price
- $ 69.95
- Sale price
- $ 69.95
- Regular price
-
$ 79.95
Sold out - 18x18x1 Merv 11 Pleated Geothermal AC Furnace Filter - Case of 6
- Regular price
- $ 59.95
- Sale price
- $ 59.95
- Regular price
-
$ 79.95
Sold out