The specific question is whether or not there is an energy saving or not using a timer or simply disconnecting the water heater.
This will depend on several factors, but the main thermal insulation (polyurethane foam or glass wool) and that this will occur depending on temperature losses through the walls of the greater or lesser degree.
addition the higher the storage temperature, the greater the loss of energy.
ideal temperature thermostat should be set at 50 degrees.
Most users will leave in 60 º or 70 º and more also but as the water is too hot open the cold water, resulting in loss of this energy.
Another important feature is the use of water in the home, if you go to the bathroom and wash their hands with hot water, there worth saving.
connecting the water heater 2 hours before using it enough and then off again, it is important to assess a daily routine and install a timer (timer) permitting the same connection automatically thus achieving energy savings of up to 27% in water heaters for glass wool insulation, depending on the scheduled routine.
Source: GCIA. Sector Analysis Rate - UTE
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