Tankless water heaters will save you money, and here's why. Tankless water heaters will have up to 40% in energy savings, endless hot water (YES, ENDLESS!), space savings and a 20+ yrs life span. And it also produces less CO2 and NOx than gas or electric tank type water heaters.
Tankless water heaters sense the flow of water when you turn on your faucet then the unit will begin to heat the water until you turn the faucet off. This will happen only when you turn the faucet on unlike tank type heaters that will continue to reheat the water even if you have been gone for three days. The unit will also capture 84% of the heat energy as opposed to a tank type which around 60% new.
These units also carry longer warranties and all parts can be replaced. Tank type heaters can break and leak all over with no replacemnet options.
Today an estimate for a standard 50 gallon tank type heater installed at $725.00 vs. a tankless installed at $2,300. But you may replace 2-3 tank type heaters in the same amount of time 1 tankless. And on top of that alone you will be saving energy costs and cold showers.
We have installed hundreds of tankless units and have not once had a complaint. These really are the way of the future.