Instant hot water heaters are nice, too. But I have only seen that they run on gas. We don't have that in this area. And I wouldn't want gas in my home anyway. Too dangerous. They usually run at about $1600.00 plus around $500.00+ for installation. My hot water heater costs about $400.00 per year, so it would take five years+ to get a return on my money. Plus the cost of repair (which is usually my luck) for one of those babies when it goes on the blink. Not practical for me until they make one that runs on electric.