DPHC - Water Heater System Hard Water Scale RemoverInstallation Guide Nuvo H2O DPHC Water Heater System Hard Water Scale Remover The NuvoH2O Water Heater System not only prevents hard water build up but it reduces and removes existing scale, helping to restore your water heater to near new efficiencies. The NuvoH2O Water Heater System not only saves on the operating costs of your water heater but can reduce maintenance costs and extend the life of this critical appliance. Get yours today! It was