I have an electric titan tankless water heater its 1yr old. last night all of a sudden it quite producing hot water. no fuse appears to have blown and standby light is on but no hot water just ice cold. please help i know nothing about the new tankless heaters.

All electric house. I am considering adding on demand water heaters in two places. They cost at least twice as much as a tank type.

Does an on demand burn the heater elements if the water is turned off? My tank type does burn out the heater elements if the water level drops below the elements in the tank.

Also, is the on demand water heater repairable or would a person have to buy a new one in case of failure?

I am a home improvement contractor and I was told be a customer that there is an electric tankless water heater with a propane back up. I have never heard of such, nor can I find one online. If you know of one would you please paste a link for me.

I took out a propane water heater and I have a gas water heater. I need to convert the new gas water heater to the existing propane.

are electric tankless water heaters any better than a normal electric water heater and are they any cheaper on hydro?

I am looking into pruchasing a tankless water heater but do not want to pay more to operate it than the tank i have now. I know my tank runs on 1000 btu's and most tankless heaters run at about 10 thousand. Is it worth it to switch over?