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)
  • $226.40
  • 6 Filters
  • ($37.73 / filters)
MERV 8
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3 Months $150.93
Best Value!

$226.40
6 Filters

($37.73 / filter)
23x43x2 MERV11 SpiroPure O
MERV 11 Geothermal Filters (6 Pack)
  • $244.40
  • 6 Filters
  • ($40.73 / filters)
MERV 11
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3 Months $162.93

$244.40
6 Filters

($40.73 / filter)
23x43x2 MERV13 SpiroPure O
MERV 13 Geothermal Filters (6 Pack)
  • $266.26
  • 6 Filters
  • ($44.38 / filters)
MERV 13
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3 Months $177.51

$266.26
6 Filters

($44.38 / 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.