Installing a tankless gas water heater is a very worthwhile investment and one that will pay for itself in a very short period of time. Most models last a minimum of ten years so you won't have to make the investment again for quite some time. The main ways tankless gas water heaters save you money is on your heating bill. This is because the water is only heated as you need it rather than continuously. Since there is no tank to worry about, you won't every have to deal with the expense of household items being ruined due...