6699 Tankless Water Heater Flushing Kit Includes 1/6HP Submersible Sump Pump with Two Adapters & 3 Gallons Pail with Bucket Lid Opener & Two 1/2” Dia X 6' PVC Hoses with Washers - Amazon.com
Kelaro Tankless Water Heater Descaler Flushing Kit with Rectorseal Calci-Free 644730791090 | eBay
Rinnai RUC80 - 5.0 GPM at 60° F Rise - 0.92 UEF - Propane Tankless Water Heater - Direct Vent | Rinnai RUC80IP