Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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Big Blue Water Filters Housings

Big Blue & Big Clear Water Filter Housings

POE (point of entry) Whole House Water Filter Housings And POE Systems

10" x 4 1/2" and 20" x 4 1/2" Replacement Filter Cartridges Used in Big Blue Filter Housings

  1. OMNIFILTER BF7a Whole House Big Blue Water Filter System
    OMNIFILTER BF7a Whole House Big Blue Water Filter System

    The OmniFilter BF7a Whole House Water Filter System reduces dirt, sand, sediment and rust particles from your water and comes complete with an RS6 Rust and Sediment Filter and filter wrench. It will also accept OmniFilter's T08, R06, RS15, RS18 and RS16 filters. Uses Big Blue Heavy Duty Replacement Water Filter Cartridges.

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    $79.99 Special Price $59.95 As low as $54.99
  2. Pentek ® 150237 Big Blue 10 Inch Water Filter Housing
    Pentek ® 150237 Big Blue 10 Inch Water Filter Housing
    Pentek ® 150237 Big Blue 10" Water Filter Housing. Integral pressure relief button for easier filter changing. 1" Female NPT inlet / oulet ports. HFFP /pr. Learn More
    $69.99 Special Price $49.99 As low as $43.99
  3. Pentek ® 166219 Big Clear 10 Inch Water Filter Housing
    Pentek ® 166219 Big Clear 10 Inch Water Filter Housing
    Pentek ® #166219 Big Clear 10" Water Filter Housing. 1" FNPT threaded ports. Built in pressure relief valve for easier filter changing. Learn More
    $139.99 Special Price $114.99 As low as $103.99
  4. Pentek ® 150233 Big Blue 20 Inch Water Filter Housing- 1000
    Pentek ® 150233 Big Blue 20 Inch Water Filter Housing
    Pentek ® 150233 20" Big Blue Water Filter Housing. Integral pressure relief button for easier filter changing. 1" Female FNPT inlet / oulet ports. HFFP /pr. Learn More
    $89.99 Special Price $74.99 As low as $68.99
  5. Pentek Filter BBFS-22 Big Blue Water Filter System Pentek ® #160166
    Pentek Filter BBFS-22 Big Blue Water Filter System Pentek ® #160166
    Pentek Filter BBFS-22 Big Blue Water Filter System Pentek ® #160166. Ametek / US Filter, Pentek #160166. BBFS-22 Big Blue 20" Dual Water Filter System. Comes Mounted On Hanging Bracket. Built in pressure relief valve for easier filter changing. 1" FNPT ports. Overall dimensions: H-30", W-15 1/4", D-9". Filters Optional And Additional. Learn More
    $259.99 Special Price $189.99 As low as $169.99
  6. Pentek BBFS-222 Big Blue Whole House Water Filter System #160168
    Pentek BBFS-222 Big Blue Whole House Water Filter System #160168
    Pentek BBFS-222 Big Blue Whole House Water Filter System #160168. Compatible with Ametek, US Filter and other standard size Big Blue whole house water filter systems. 1" FNPT Ports. Learn More
    $399.99 Special Price $299.99 As low as $249.99
  7. Pentek # 151122 Replacement O-Ring For Big Blue Water Filter Housing - O ring
    Pentek # 151122 O-Ring For Big Blue Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek # 151122 O-Ring For Big Blue Water Filter Housing Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. O-Ring For Big Blue Water Filter Housing. Buna-N FDA Grade. (Big Blue Housings Use A 5 3/4" diameter "O" Ring) Ametek # 151122 Same as Culligan OR-100 for HD-950 Learn More
    $13.99 Special Price $9.99 As low as $6.99
  8. Molykote-From DOw Corning- 111 Compound-6 Gram O-ring Silicone Lubricant & Sealant-Dow-111-5-gram-1000
    Dow Corning (Molykote) ® 111 6 gram O-ring Silicone Lubricant and Sealant - Be sure to lube your O-rings to help prevent leaks.
    Dow Corning/Molykote ® 111 6 gram O-ring Silicone Lubricant and Sealant - 6 gram pillow pack. (like a ketchup packet) Great O-ring sealant and lubricant. FDA and NSF approved. (Do Not Use Petroleum Jelly As It May Break Down O-rings Or Housings) This is the same premium grade silicone sealant and lubricant used in underwater photography cameras, scuba gear and other underwater applications that simply can't afford leaks. Why not use the best for your reverse osmosis or drinking water filtration system?

    Dow 111 Silicone MSDS Safety Sheet

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    $5.99 Special Price $3.99 As low as $1.79
  9. Pentek SW-3 # 150296 SW3 Big Blue Water Filter Housing Sump Spanner Wrench
    Pentek SW-3 # 150296 SW3 Big Blue Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek SW-3 # 150296 SW3 Big Blue Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. SW-3 Big Blue 5 7/8" Water Filter Housing Wrench. (Big Blue Filter Housings Use A 5 3/4" Diameter "O"Ring) Ametek # 150296 Only for use in loosening filter housings, never to tighten. Overtightening may cause damage to the O-rings and make re-opening VERY difficult. Hand tighten only. For really stubborn filter housings our technicians will use two wrenches together for maximum power where one wrench might break or not do the job. Our techs know the tricks. Learn More
    $12.99 Special Price $8.99 As low as $5.99
  10. PENTEK- Big Blue SW4 Water Filter Housing Sump Spanner Wrench -1000
    Pentek SW-4, SW4 Big Blue Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands
    Pentek SW-4, SW4 Big Blue Water Filter Housing Spanner Wrench Compatible With Culligan / Ametek / US Filter / Plymouth / Kleen Plus / American Plumber / Bruner & Many Other Brands. SW-4 Big Blue Water Filter Housing Wrench - For 20" Big Blue 5 7/8" Filter Housing Wrench. (Big Blue Filter Housings Use A 5 3/4" Diameter "O"Ring) Only for use in loosening filter housings, never to tighten. Overtightening may cause damage to the O-rings and make re-opening VERY difficult. Hand tighten only. For really stubborn filter housings our technicians will use two wrenches together for maximum power where one wrench might break or not do the job. Our techs know the tricks. Learn More
    $12.99 Special Price $8.99 As low as $5.99
  11. Pentek 151039 Pressure Relief Valve Button Kit
    Pentek 151039 Pressure Relief Valve Button Kit
    Pentek 151039 Pressure Relief Valve is a Replacement Pressure Relief Button Kit that works with whole house housings with pressure release buttons. Learn More
    $8.99 Special Price $4.99

*Big Blue ® is the registered trademark of Pentair, the manufacturer of Big Blue ® brand water treatment equipment. The replacement filters and ro membranes listed above may not be manufactured or endorsed by Pentair. Rather, these filters and reverse osmosis membranes may be manufactured by other companies. While these filters and membranes are compatible for use in Big Blue Water Filter Housings, we make no representation as to whether using these filters and membranes is consistent with the warranty applicable to Big Blue Water Filter Housing ® equipment.