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Whole House Water Filter - Model OB1
Model OB1 is OMNI's basic whole house water filter for professional installers. The filter comes with the filter housing and a pressure release valve. The filter cartridge and installation hardware are sold separately. 

The OB1 now comes with mounting bracket and wrench.

With it's 3/4" NPT threaded openings, the OB1 whole house water filter can be installed on standard plumbing pipe.  

If you are a do-it-yourself-er, we recommend you install Model U25 as your whole house system.  It comes complete with a filter cartridge and installation fittings.

Need Help? Please call our customer service number: (855) 855-1976 for assistance.
Replacement filter cartridges: TO1  or    RS1  or  RS2  or  RS3  or  RS5 or RS7  or RS12  or RS14 (choose 1)

OB1 Filter System

The OB1 now comes with mounting bracket and tank wrench. The filter cartridge and installation hardware are sold separately. 

Our Price

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  TO1 $7.93 

  RS1 $3.97

  RS2 $4.88

  RS3 $3.99

  RS5 $4.48

  RS7 $3.31

  RS12 $3.12

  RS14 $2.80


  K4 O-ring + $3.95

Qty: Add OK40 Oring + $3.95


  OW30 Wrench + $7.99



Installation Information

Also called OB1 and OB 1 whole house filter

Length: 11 1/2 inches 
Width: 5 1/4 inches

Installation information

Tank Wrench and O-Rings


GAC1 Cartridge Information and Data - Get More Data or Purchase Other Cartridges Separately Here 

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We are not associated with Envirotech Products Incorporated of Mulvane Kansas          02242014