GUC ProLine Ultra Low NOx Gallon Gas Water Heater.GCR ProLine Gallon Gas Water Heater.How much should water heater installation cost? How much should it cost to have a standard tank gas water heater installed? In , I paid $ to have one .HomeAdvisor’s Tankless Water Heater Cost Guide lists pricesociated with installing or replacing a tankless water heater including labor and materials, as reported .
Average cost with installation Tank $. gallon tank Tankless $, . For the unit alone, an electric tankless water heater costs from $ to $, and a gas tankless water heater costs $, to $,. However, because of the prolonged and complicated installation process, expect to add several hundred to a couple thousand dollars more in installation costs..Typical cost here in the Philly area for a gallon gas water heater installation is between $ . Don t forget that they also take away the .