Start with what is already there
A gas unit needs a suitable fuel supply and, depending on the model, venting. Electric models need a circuit sized for the equipment. A conversion can require changes beyond swapping the tank.
Compare capacity and operating cost
Check the first-hour rating for storage heaters and flow at temperature rise for tankless. Compare efficiency and local utility rates. Heat pump electric models operate differently from standard electric resistance tanks and have additional site requirements.
Ask what each quote includes
Have the installer explain the equipment, connections, any changes to the site, and warranty terms. If the heater is failing, call with the existing fuel type so you can discuss options that fit the timeline.
