The EF or the energy factor of a water heater denotes the efficiency of the water heater in concern. This is measured by looking at both energies; one that is used to heat water for daily consumption and the overall energy consumption of your water heater. You can use this value to gauge your water heater’s efficiency. This value of energy factor or EF also allows you to gauge the efficiencies of water heaters when you go out for buying. The gas water heaters that have a bigger value for energy factor will have a much lower running cost relative to the other competitors that have a low value of EF. A larger value of EF also shows that the water heater is more efficient. Even though these high EF valued water heaters may be expensive to set up in the start but they will save your pocket for coming years.
