Truly, climate and altitude both influence flow rate or water temperature, particularly for propane and natural gas models. As soon as it arrives 4000 ft, a natural gas water heater starts to lose its productivity and effectiveness at the pace of 4 percent per 1000 ft. Also, the rate of flow drops 2 to 3 GPM for a huge rate of flow kinds.  Whereas for the electric tankless water heater, their working productivity isn't influenced by it. Truly, climate and altitude both influence flow rate or water temperature, particularly for propane and natural gas models. As soon as it arrives 4000 ft, a natural gas water heater starts to lose its productivity and effectiveness at the pace of 4 percent per 1000 ft. Also, the rate of flow drops 2 to 3 GPM for a huge rate of flow kinds.