Two people could probably get by with a 30 gallon unit. Most showerheads are now rated at 2-1/2 gallons per minute so longer shower time may not be available. Even though you are not using hot water only, you are still replacing the used hot water with cold water so you are lowering the water temp in the tank. Running gas lines is a lot more expensive than electrical lines. With gas, you also need to run a vent through the roof. You may also want to consider a tankless heater for energy saving plus less space taken up. Just my thoughts. Good luck with your project.
if you have never made a mistake, you probably haven't done much.
Last edited by majakdragon; 12-06-2008 at 10:49 AM.