Find the best tankless gas or electric water heater for your home. Get comparison reviews of instant, on demand water heaters to fit your needs..For a person like me who has “hating winters” marked as a hobby on his Resume, the best tankless water heaters were asend. They provide, searing water * while also keeping my energy.Best tankless propane water heater. Get on demand propane water heater reviews. Choose propane water heater for whole house and instant water in tap.On demand water heaters, we understand the pain of decision making? Read the complete guide and Compare top gas and electric tankless water heaters available in the market today.