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OFTWH-RES

OneFlow Residential Anti-Scale Systems for Tankless Water Heaters

Sales Channel: Multi-Channel

  • Maximum flow rate: 6 gpm
  • Chemical-free, salt-free scale prevention and protection system that improves efficiency of all water heating devices and downstream plumbing components
  • Environmentally-friendly technology requires no electricity and generates no wastewater
  • Simple shutoff and filter change with inlet ball valve and filter wrench – filter cartridge only needs to be changed every two years

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific OFTWH-RES

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA