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Home/ Carrier/ 18x20x1

Carrier 18x20x1 Filter

151 Carrier cabinet models use this filter size

Filter Size (Nominal)18x20x1
Actual Dimensions17.5 x 19.5 x 0.75
MERV RatingMERV 13
Filter TypeHEPA
Compatible Models151 Carrier units

Buy Carrier 18x20x1 Replacement Filters

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Compatible Carrier Cabinet Models (151)

All models below use the 18x20x1 filter size. Find your model number on the label inside your filter cabinet door.

Cabinet Model #MERVFilter TypeUnit Type
CA352A72MERV 13HEPAAir Handler
CA581B22MERV 13HEPAAir Handler
CA856A30MERV 13PleatedPackaged Unit
CA239A22MERV 8PleatedPackaged Unit
CA961Z37MERV 11FiberglassAir Handler
CA841C16MERV 8PleatedPackaged Unit
CA352A37MERV 8FiberglassFurnace
CA813B43MERV 8PleatedPackaged Unit
CA396C69MERV 13FiberglassPackaged Unit
CA678X52MERV 8HEPAHeat Pump
CA186X26MERV 13FiberglassAir Handler
CA394C57MERV 8PleatedFurnace
CA361A33MERV 13FiberglassAir Handler
CA512A98MERV 13HEPAFurnace
CA768X17MERV 8HEPAAir Handler
CA120X64MERV 13HEPAHeat Pump
CA818Z68MERV 8FiberglassHeat Pump
CA233B66MERV 11PleatedPackaged Unit
CA663Z25MERV 8PleatedHeat Pump
CA983Z80MERV 13PleatedFurnace
CA918C63MERV 11FiberglassFurnace
CA432A19MERV 11HEPAHeat Pump
CA713A16MERV 11FiberglassFurnace
CA943B51MERV 11PleatedHeat Pump
CA977Z89MERV 8PleatedAir Handler
CA388A12MERV 13HEPAHeat Pump
CA645Z96MERV 13HEPAFurnace
CA521X44MERV 8FiberglassAir Handler
CA556A10MERV 11FiberglassFurnace
CA251X47MERV 8HEPAFurnace
CA235A43MERV 13HEPAPackaged Unit
CA268B77MERV 8HEPAPackaged Unit
CA638A34MERV 11PleatedPackaged Unit
CA609Z21MERV 8FiberglassFurnace
CA378B13MERV 13HEPAPackaged Unit
CA793X44MERV 11HEPAAir Handler
CA884A92MERV 8HEPAAir Handler
CA929Z70MERV 8PleatedPackaged Unit
CA873X78MERV 8HEPAPackaged Unit
CA115Z90MERV 13FiberglassHeat Pump
CA825B85MERV 11FiberglassAir Handler
CA378Z37MERV 13PleatedAir Handler
CA777B38MERV 13PleatedHeat Pump
CA659Z17MERV 8HEPAPackaged Unit
CA264Z39MERV 11FiberglassAir Handler
CA339Z59MERV 8FiberglassAir Handler
CA548C76MERV 13PleatedAir Handler
CA266Z49MERV 11PleatedAir Handler
CA642Z26MERV 13HEPAHeat Pump
CA477Z17MERV 13FiberglassFurnace
CA557C96MERV 13HEPAAir Handler
CA902X69MERV 13PleatedHeat Pump
CA751X39MERV 11FiberglassHeat Pump
CA193X60MERV 13FiberglassPackaged Unit
CA666Z35MERV 8HEPAHeat Pump
CA665X51MERV 8PleatedFurnace
CA655B59MERV 11FiberglassHeat Pump
CA367Z98MERV 8PleatedPackaged Unit
CA841B23MERV 13FiberglassHeat Pump
CA340A11MERV 13HEPAHeat Pump
CA293Z92MERV 8HEPAHeat Pump
CA566B29MERV 13PleatedHeat Pump
CA812B18MERV 8HEPAPackaged Unit
CA610B98MERV 8FiberglassHeat Pump
CA789A51MERV 13HEPAAir Handler
CA123B34MERV 13HEPAAir Handler
CA478B15MERV 13PleatedPackaged Unit
CA357C79MERV 8HEPAAir Handler
CA795Z66MERV 13PleatedHeat Pump
CA527B30MERV 8FiberglassHeat Pump
CA481X76MERV 8PleatedFurnace
CA490B41MERV 13PleatedFurnace
CA943C68MERV 13HEPAPackaged Unit
CA836B77MERV 8FiberglassAir Handler
CA562A61MERV 13PleatedHeat Pump
CA825X73MERV 8HEPAHeat Pump
CA899A69MERV 11PleatedFurnace
CA556Z73MERV 8FiberglassPackaged Unit
CA298B22MERV 8FiberglassHeat Pump
CA196X16MERV 11PleatedHeat Pump
CA474C53MERV 13HEPAAir Handler
CA826A28MERV 8PleatedHeat Pump
CA609A65MERV 13FiberglassFurnace
CA810X40MERV 13HEPAFurnace
CA123B47MERV 11HEPAHeat Pump
CA472X23MERV 11PleatedFurnace
CA228X51MERV 8HEPAAir Handler
CA435X35MERV 11PleatedPackaged Unit
CA534X37MERV 13HEPAHeat Pump
CA479Z96MERV 11FiberglassFurnace
CA928B91MERV 11FiberglassFurnace
CA640Z58MERV 8FiberglassAir Handler
CA743Z40MERV 8PleatedPackaged Unit
CA848Z40MERV 13FiberglassFurnace
CA783C87MERV 8FiberglassPackaged Unit
CA136C43MERV 13HEPAFurnace
CA454B28MERV 11PleatedAir Handler
CA239Z61MERV 13PleatedPackaged Unit
CA170B43MERV 8PleatedFurnace
CA947X59MERV 11FiberglassPackaged Unit
CA116B55MERV 11FiberglassHeat Pump
CA101X59MERV 13HEPAAir Handler
CA726A82MERV 8HEPAPackaged Unit
CA932A44MERV 13FiberglassAir Handler
CA370Z11MERV 8HEPAFurnace
CA339C14MERV 8HEPAHeat Pump
CA971Z65MERV 11FiberglassHeat Pump
CA446B97MERV 11FiberglassAir Handler
CA315B29MERV 11PleatedHeat Pump
CA288Z52MERV 11HEPAPackaged Unit
CA534C18MERV 8HEPAAir Handler
CA267Z31MERV 13HEPAPackaged Unit
CA741A15MERV 8FiberglassHeat Pump
CA784C19MERV 13FiberglassPackaged Unit
CA196B64MERV 8FiberglassPackaged Unit
CA761B48MERV 13PleatedHeat Pump
CA967B76MERV 8HEPAPackaged Unit
CA927X22MERV 11FiberglassAir Handler
CA644C12MERV 11HEPAAir Handler
CA139A91MERV 11HEPAPackaged Unit
CA104C69MERV 11HEPAFurnace
CA832A55MERV 11PleatedPackaged Unit
CA676Z31MERV 11FiberglassAir Handler
CA714X57MERV 8FiberglassHeat Pump
CA316B79MERV 11FiberglassFurnace
CA982C55MERV 11PleatedPackaged Unit
CA337A20MERV 13HEPAPackaged Unit
CA374C93MERV 13HEPAHeat Pump
CA414A67MERV 8HEPAAir Handler
CA273A92MERV 11FiberglassHeat Pump
CA706B67MERV 11PleatedFurnace
CA141Z61MERV 8FiberglassAir Handler
CA776Z79MERV 8PleatedPackaged Unit
CA575B55MERV 13PleatedAir Handler
CA891B43MERV 11PleatedHeat Pump
CA427X26MERV 11PleatedFurnace
CA212A77MERV 11PleatedPackaged Unit
CA117A92MERV 13HEPAFurnace
CA592Z89MERV 11FiberglassHeat Pump
CA571X12MERV 13PleatedFurnace
CA145X47MERV 8PleatedFurnace
CA698B14MERV 13HEPAHeat Pump
CA653B79MERV 13HEPAAir Handler
CA808C64MERV 13PleatedHeat Pump
CA304Z26MERV 13HEPAPackaged Unit
CA739Z15MERV 13FiberglassAir Handler
CA878X61MERV 8FiberglassHeat Pump
CA729A67MERV 8PleatedHeat Pump
CA211Z57MERV 8PleatedPackaged Unit
CA451A82MERV 13HEPAHeat Pump
CA887A13MERV 8PleatedHeat Pump

How to Confirm Your Filter Size

The nominal size (18x20x1) is the labeled size. The actual measured dimension is 17.5 x 19.5 x 0.75. Always check the label on your existing filter or measure the slot before ordering replacements.

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