18x32x2 Geothermal Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
18x32x2 MERV8 SpiroPure O
MERV 8 Geothermal Filters (6 Pack)
  • $123.99
  • 6 Filters
  • ($20.67/filter)
MERV 8
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3 Months $82.66/yr
Best Value!

$123.99
6 Filters

($20.67/filter)
18x32x2 MERV11 SpiroPure O
MERV 11 Geothermal Filters (6 Pack)
  • $148.99
  • 6 Filters
  • ($24.83/filter)
MERV 11
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3 Months $99.33/yr

$148.99
6 Filters

($24.83/filter)
18x32x2 MERV13 SpiroPure O
MERV 13 Geothermal Filters (6 Pack)
  • $158.99
  • 6 Filters
  • ($26.50/filter)
MERV 13
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3 Months $105.99/yr

$158.99
6 Filters

($26.50/filter)
MERV Rating - Contaminant Removal Guide
MERV Rating   8 11 12 13
Lint & Dust  
Dust Mite Debris  
Pollen  
Mold Spores  
Pet Dander  
Auto Emissions  
Smoke  
Tobacco  
Bacteria  
Note: equals efficient removal of contaminant by filter.