A whole house tank less water heater is beneficial to the environment and the lucky family who lives in a home with one installed. The water is constantly at the desired temperature, which can be set by the turning of a dial. The flow of the hot water will be maintained automatically to allow the temperature to remain consistently set. Instant hot water heaters will always have heated water available immediately when any hot water faucet in the house is turned on. No more waiting seconds or sometimes minutes for the hot water to reach the faucet, any minutes saved during a stressful day are more time to enjoy doing the things we enjoy. For new mother's the time saving ability to heat a babies bottle quickly is just one of the many beneficial uses of having hot water ready at an instant.