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23x43x2 Geothermal Air Filters

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Products   MERV Rating Filter Life Annual Cost Value Pack
23x43x2 MERV8 SpiroPure O
MERV 8 Geothermal Filters (6 Pack)
  • $148.99
  • 6 Filters
  • ($24.83/filter)
MERV 8
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3 Months $99.33/yr
Best Value!

$148.99
6 Filters

($24.83/filter)
23x43x2 MERV11 SpiroPure O
MERV 11 Geothermal Filters (6 Pack)
  • $176.99
  • 6 Filters
  • ($29.50/filter)
MERV 11
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3 Months $117.99/yr

$176.99
6 Filters

($29.50/filter)
23x43x2 MERV13 SpiroPure O
MERV 13 Geothermal Filters (6 Pack)
  • $189.99
  • 6 Filters
  • ($31.67/filter)
MERV 13
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3 Months $126.66/yr

$189.99
6 Filters

($31.67/filter)
MERV Rating - Contaminant Removal Guide
MERV Rating   8 11 12 13
Lint & Dust  
Dust Mile Debris  
Pollen  
Mold Spores  
Pet Dander  
Auto Emissions  
Smoke  
Tobacco  
Bacteria  
Note: equals efficient removal of contaminant by filter.