Calci-Free Tankless Water Heater Flush Kit

Calci-Free Tankless Water Heater Flush


Economical cleaner that restores circulation and pressure in commercial & residential tankless water heaters.

  • Restores Circulation in Minutes
  • More Effective Than Vinegar
  • Easy to Use With No Strong Odor
  • Cleans Heat Exchanger Fast

Rectorseal Product # 68708

Calci-Free Tankless Water Heater Flush Kit


A complete cleaning system to clean and restore efficiency to tankless water heaters. All the equipment necessary to pump and circulate the Calci-Free flushing solution through tankless water heaters to eliminate lime scale and other contaminants which can build up on the walls of heat exchanger tubes over time and block the flow of water. 

Kit Contains:

  • (1) Heavy Duty utility pump (submersible) with 3/4" GHT connection
  • (1) 7' Feeder hose w/ swivel fittings
  • (1) 7' Discharge hose
  • (1) Elevated pump strainer
  • (1) 1.2 lbs of Calci-Free

Rectorseal Part # 67811 

Product Overview (PDF)

Approved for use with Navien Tankless Water Heaters.