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Currency - All prices are in AUD

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Get premium quality 18x24x4 furnace filters made by CAMFIL. Compare Camfil filters:
MERV 8 8 11 13
LIFESPAN 4 months 6 months 5 months 5 months
COST PER FILTER $18.67 $26.83 $24.67 $31.17
$161 $148 $187
 OVERVIEW  economical  best overall
 remove allergens
at low cost
 superior dust and
allergen removal
The higher the MERV rating on a filter, the fewer dust particles and other contaminants can pass through it. 
  • 18x24x4 Furnace Filter

    18x24x4 Furnace Filter Camfil AP-3. (6-pack) US$97.30 US$84.48

    MERV 8 yields high indoor air quality with an exceptional filter that rivals the brand name competition. GREAT VALUE: You pay only $18.67 each! Pay less, get more. Most affordable product of this size! HIGHLIGHTS MERV 8...

  • 18x24x4 Furnace Filter Merv 8

    18x24x4 Furnace Filter Camfil 30/30. (6-pack) US$139.55 US$121.44

    MERV 8: Best selling -- 5 Star Rated with Innovative Technology. Ultimate filter for Canadian homeowners. Offers the best value for price, lifespan, and air quality with brand name reliability. Pay only $26.83 per filter!...

  • 18x24x4 furnace filter merv 11

    18x24x4 Furnace Filter Camfil AP-11. (6-pack) US$128.23 US$111.64

    MERV 11: High Efficiency -- State of the art filtration capabilities remove allergens, the perfect choice for Canadian homeowners to elevate air quality. Brand name reliability at a low cost: pay only $24.67 per furnace...

  • 18x24x4 Air Filter Merv 13

    18x24x4 Furnace Filter Camfil AP-13. (6-pack) US$162.17 US$141.05

    MERV 13: Highest Efficiency filtration. The BEST Canadian homeowners can buy! Better performance, superior results for a cleaner, safer home. And at just $31.17 per filter, you’re paying for superior dust and allergen...