This 16V 22 hot water heater features zero cold water startup. Generally, for water heaters without the function when the user turns on the faucet, cold water in the pipe coming out for a short while before hot water follows. 16V22 water heater is capable to maintain hot water running in the system once the function activated. This enables hot water is immediately available whenever the user turns on the tap. 16V22 is available in 13L and 16L capacity.