Electric, gas or propane
Electric, gas and propane water heater models each present advantages and disadvantages.
Electric Water Heater
Gas-Powered Water Heater
Installation can be slightly more difficult if the original tank was an electric model, as new gas fuel lines and venting to the outside are needed.
Another great benefit is that the gas-powered hot water tank will continue to work during power outages. When selecting this model and installing it yourself, make sure to purchase a sealed combustion or power venting model to increase safety.