We discussed installing a new boiling water heater, and I thought we should go larger, but my hubby was adamant about keeping the same size we had now, and maybe even going a little smaller, and I hated that when I was taking a shower, I would often run out of hot water.
I told him that was the reason I wanted a larger water heater, later that week, he brought home a bunch of paperwork plus gave it to me, and he told me to read through the paperwork and tell me what I wanted to do when I was done.
I had paperwork on energy efficient electric hot water heaters. I had paperwork on gas water furnaces and water furnaces that were connected to the gas furnace! At the bottom of the pile, I found studying material about a tankless water heater. There was no limit to how much hot water you can get from your tankless water heater. We can get small units that would go on to every faucet, which was known as hot water on demand, and within seconds of turning on the faucet, you would have hot water. The tankless hot water furnace was a little more extravagant than these units, but they all worked under the same premise. They were connected directly to your hot water lines, plus when hot water was called for within 2 to 3 seconds, it was coming from your faucet. There is no wasted energy trying to heat a large tank of hot water, because it was heating the water as needed. I wanted a large water furnace then, but now I want a tankless water heater.