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OFTWH

OneFlow Anti-Scale System For Tankless Water Heaters for up to 10 gpm (38 lpm)

Sales Channel: Multi-Channel

  • Maximum flow rate: 10 gpm
  • Environmentally-friendly technology requires no electricity and generates no wastewater
  • Chemical-free, salt-free scale prevention and protection system that improves efficiency of all water heating devices and downstream plumbing components
  • 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

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