Save With Quantity Discounts On Replacement Water Filters and Reverse Osmosis Membranes

Harmsco Water Filters

Harmsco Replacement Water Filter Cartridges

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  1. Harmsco 801 HIF 0.35 sub micron Replacement Sediment Filter

    Regular Price: $12.99

    Special Price $7.99

    As low as: $5.99
    Harmsco 801 0.35 micron HIF Replacement Sediment highly efficient filter cartridges made of pleated Polyester-PlusTM filter media for low pressure drop, high flow capability, increased contaminant removal, long filter runs, reusability and the lowest cost per gallon filtered. • Pleated design with up to 50% more surface area than competitive filters resulting in superior performance & increased contaminant removal • Longer filtration runs for fewer change-outs and less maintenance • Low pressure drop • Thermally bonded for longer usable life • FDA approved materials - NSF 61 certified • Engineered media for superior performance. Learn More
  2. Harmsco ® HB-20-1-W 20 Inch Big Blue Sediment Water Filter

    Regular Price: $49.99

    Special Price $34.99

    As low as: $29.99
    Harmsco ® HB-20-1-W 20 Inch Big Blue Water Filter - 20" Long by 4 1/2" diameter - 1 Micron Big Blue - 4 per case, sold individually. Made with a proprietary blend of Polyester-PlusTM filter media. Cleanable and reusable in most applications; individually shrink wrapped. Flow rates Up to 130 GPM (113 LPM) Order a case and save even more. Learn More
  3. Harmsco ® H-7477 Replacement Water Filter Cartridge

    Regular Price: $99.99

    Special Price $58.99

    As low as: $54.99
    Harmsco ® H-7477 Replacement Water Filter Cartridge - Hayward 75 sq.ft. Sta-Rite PRC 75 compatible. Replaces CX570-RE / C-7477 / PA75-SV. Learn More
  4. Harmsco ® HB-10-50W-AM Big Blue Antimicrobial Water Filter

    Regular Price: $35.99

    Special Price $23.99

    As low as: $21.99
    Harmsco ® HB-10-50W-AM Big Blue Antimicrobial Water Filter. Antimicrobial Replacement Water Filter Cartridge - Step up to The Premium Quality Of Antimicrobial Construction. Cleanable and reusable in most applications; individually shrink wrapped. Flow rates Up to 15 GPM (56 LPM). Order a case and save even more. Learn More
  5. Harmsco 801-20HT 20 Micron 9.75" Inch HIF High Temp Water Filter
    $9.99
    Harmsco 801-20HT 20 Micron 9.75" Inch HIF High-Temp Water Filter Learn More
  6. Harmsco 921-5 WaterBetter Replacement Sediment 5 Micron 19 1/2 Inch Water Filter

    Regular Price: $19.99

    Special Price $12.99

    As low as: $11.99
    Harmsco 921-5 Replacement WaterBetter Sediment 5 Micron 19 1/2 Inch Water Filter. White end caps. Learn More
  7. Harmsco ® H-8417-AM Antimicrobial Replacement Water Filter Cartridge

    Regular Price: $169.99

    Special Price $139.99

    As low as: $124.99
    Harmsco ® H-8417-AM Antimicrobial Replacement Water Filter Cartridge - Replaces HA175TC-3, C-8417 & PA175. Hayward 175 sq.ft. CX1750-RE. 28 height X 9 diameter. Step up to Premium Antimicrobial Construction. Learn More
  8. Harmsco ® ST/105 Water Filter

    Regular Price: $139.99

    Special Price $89.99

    As low as: $79.99
    Harmsco ® ST/105 Water Filter - Fits Bestfilter BF-105. Filbur cross reference # FC 6110. 19 1/2" height. Learn More
  9. Harmsco-H-4335 (Harmsco H-4335 Replacement Water Filter Cartridge)
    $26.99
    Harmsco H-4335 Replacement Water Filter Cartridge Learn More
  10. Harmsco ® HB-10-20W Big Blue Sediment Water Filter

    Regular Price: $29.99

    Special Price $18.99

    As low as: $16.49
    Harmsco ® HB-10-20W Big Blue Water Filter - 9 3/4" Long by 4 1/2" diameter - 20 Micron Big Blue - 8 per case, sold individually. Made with a proprietary blend of Polyester-PlusTM filter media. Cleanable and reusable in most applications; individually Learn More
  11. Harmsco ® H-6430 Replacement Water Filter Cartridge

    Regular Price: $36.99

    Special Price $24.99

    As low as: $22.99
    Harmsco ® H-6430 Replacement Spa Water Filter Cartridge - Replaces WA30TC-3, C-6430 & PWK30. Watkins 30 sq.ft. Fits all models starting from 1991. 10 1/2" height X 6" diameter. Learn More
  12. Harmsco ® HB-10-20W-AM Big Blue Antimicrobial Water Filter

    Regular Price: $35.99

    Special Price $23.99

    As low as: $21.49
    Harmsco ® HB-10-20W-AM Big Blue Antimicrobial Water Filter. Antimicrobial Replacement Water Filter Cartridge - Step up to The Premium Quality Of Antimicrobial Construction. Cleanable and reusable in most applications; individually shrink wrapped. Flow rates Up to 15 GPM (56 LPM). Order a case and save even more. Learn More
  13. Harm_801-100 (Harmsco 801-100 100 Micron 9.75" Inch HIF Water Filter)
    $7.99
    Harmsco 801-100 100 Micron 9.75" Inch HIF Water Filter Learn More
  14. Harmsco ® WB-5-W WaterBetter Replacement Sediment 5 Micron Water Filter

    Regular Price: $12.99

    Special Price $7.99

    As low as: $6.29
    Harmsco ® WB-5-W WaterBetter Water Filter - Replacement Sediment 5 Micron - 9 3/4" L x 2 3/4" D - Polyester - Pressure drop with Harmsco cartridges is exceptionally low due to our pleated design and increased filter area. 24 per case, sold individually. Order a case and save even more. Learn More
  15. Harmsco ® H-8409-AM Antimicrobial Replacement Water Filter Cartridge

    Regular Price: $129.99

    Special Price $84.99

    As low as: $79.99
    Harmsco ® H-8409-AM Antimicrobial Replacement Water Filter Cartridge - Step up to Premium Quality Of Antimicrobial Construction. Replaces HA90TC-3, C-8409 & PA90. Hayward CX900 RE. 90 sq.ft. 17 5/16" height X 8 7/8" diameter. Learn More
  16. Harmsco ® OTC/6-4 Replacement Water Filter

    Regular Price: $8.99

    Special Price $6.99

    As low as: $6.24
    Harmsco ® OTC/6-4 Water Filter - Harmsco Bestfilter Cluster water filter cartridges. Tropi-Clean. 20 microns nominal. 6 sq.ft. nominal 9 3/4 height x 2 3/4 diameter. PT. NO. OTC/6-4 Learn More
  17. Harm_931-5 (Harmsco 931-5 WaterBetter Replacement Sediment 5 Micron 29 1/4 Inch W...
    $19.99
    Harmsco 931-5 WaterBetter Replacement Sediment 5 Micron 29 1/4 Inch Water Filter. Learn More
  18. Harmsco ® H-4950 Replacement Water Filter Cartridge

    Regular Price: $38.99

    Special Price $26.99

    As low as: $23.99
    Harmsco ® H-4950 Replacement Water Filter Cartridge - Unicel cross reference # C-4950. RA50TC-3 & PRB50-IN. Rainbow 50 sq.ft. 13 3/8 inches height x 4 15/16 inches diameter. Learn More
  19. Harmsco ® H-9650 Replacement Water Filter Cartridge

    Regular Price: $69.99

    Special Price $48.99

    As low as: $44.99
    Harmsco ® H-9650 Replacement Water Filter Cartridge - Replaces JCFT50TC-4, C-9650 & PJ50. Jacuzzi 50 sq.ft. CFR50 & CFT50. 9 13/16 height X 9 7/8 diameter. Learn More
  20. Harmsco 801-1 1 Micron 9.75" Inch HIF Water Filter
    $9.99
    Harmsco 801-1 1 Micron 9.75" Inch HIF Water Filter Learn More
  21. Harmsco HC/90-50 50 Micron Hurricane 90 Filter Cartridge
    $84.99
    Harmsco HC/90-50 50 Micron Hurricane 90 Filter Cartridge Learn More
  22. Harmsco ® WB-1-W WaterBetter Replacement Sediment 1 Micron Water Filter

    Regular Price: $12.99

    Special Price $7.99

    As low as: $5.99
    Harmsco ® WB-1-W WaterBetter Water Filter - Replacement Sediment 1 Micron - 9 3/4" L x 2 3/4" D - Polyester - Pressure drop with Harmsco cartridges is exceptionally low due to our pleated design and increased filter area. 24 per case, sold individually. Order a case and save even more. Learn More
  23. Harmsco ® H-7656 Replacement Water Filter Cartridge

    Regular Price: $79.99

    Special Price $46.99

    As low as: $43.99
    Harmsco ® H-7656 Replacement Water Filter Cartridge - Replaces HA50TC-3, C-7656 & PA50. Hayward CX500-RE, 50 sq.ft. 19 3/4 height X 6 4/8 diameter. Learn More
  24. Harmsco HC 170 WaterBetter Series - 1, 5 and 20 Micron Hurricane Filter Cartridges

    Regular Price: $199.99

    Special Price $159.99

    As low as: $142.99
    Harmsco HC 170 WaterBetter Series - 1, 5 and 20 Micron Hurricane Filter Cartridges. Pleated Sediment Cartridges are rated for temperatures to 140°F (60°C).* Polyester-Plus™ filter media is cleanable and cartridges are reusable in most applications and micron ratings. Cartridges can be used in liquids with a pH of 3 to 11. Cartridge dimensions: 30-3/4” x 7-3/4” (OD) x 3” (FPT). Packaged one per carton. Hurricane® cartridges are capable of 50 psi ÄP. Learn More
  25. Harmsco 801-50 50 Micron 9.75" Inch HIF Water Filter
    $7.99
    Harmsco 801-50 50 Micron 9.75" Inch HIF Water Filter Learn More
  26. Harmsco ® H-4326-AM Antimicrobial Replacement Water Filter Cartridge

    Regular Price: $37.99

    Special Price $26.99

    As low as: $23.99
    Harmsco ® H-4326-AM Antimicrobial Replacement Water Filter Cartridge Learn More
  27. Harmsco ® H-9403-AM Antimicrobial Replacement Water Filter Cartridge

    Regular Price: $159.99

    Special Price $119.99

    As low as: $108.75
    Harmsco ® H-9403-AM Antimicrobial Replacement Water Filter Cartridge - Step up to Premium Quality Antimicrobial Construction. Replaces PWW150 & C-9403. REC Warehouse Waterway 150 sq.ft. 25 height x 10 diameter. Learn More
  28. Harmsco ® TC-155 Water Filter

    Regular Price: $149.99

    Special Price $119.99

    As low as: $109.99
    Harmsco ® TC-155 Water Filter - Better Filter Cross Reference #BF155. Filbur cross reference # FC 6115. 29 1/16 height X 8" diameter. #0303 Learn More
  29. Harmsco HC-90-20 Harmsco HC/90-20 20 Micron Hurricane 90 Filter Cartridge
    $84.99
    Harmsco HC/90-20 20 Micron Hurricane 90 Filter Cartridge Learn More
  30. Harmsco ® HB-20-20-W 20 Inch Big Blue Sediment Water Filter

    Regular Price: $43.99

    Special Price $31.99

    As low as: $28.99
    Harmsco ® HB-20-20-W 20 Inch Big Blue Water Filter - 20" Long by 4 1/2" diameter - 20 Micron Big Blue - 4 per case, sold individually. Made with a proprietary blend of Polyester-PlusTM filter media. Cleanable and reusable in most applications; individually shrink wrapped. Flow rates Up to 130 GPM (113 LPM) Order a case and save even more. Learn More

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