We always assume when going on vacation it’s more cost-effective to turn water heaters off but this is not always the case in the long run. Dependant of age, efficiency and how long it will be shut off for are all factors that must be considered. An older water heater is likely to go wrong if turned off for a long period of time. The change in temperature from hot to cold can lead to leaks or component failure.
A relatively new water heater is unlikely to go wrong if turned off for a week or two however, some models do have a vacation mode. This turns the temperature down and just keeps it ticking over.
The only disadvantage of this is that hot water in the tank whilst above 108F kills any bacteria that may be lying around in the tank. As soon as the water is cooled the bacteria will multiply at an alarming rate. Warm water is the ideal environment for bacteria such as legionella to breed. The most important thing to remember that if the water heater is turned off or down, it must not be used until the water has heated back up to a high temperature for several hours. Hot water needs to be run through the pipes to flush any harmful bacteria away.
There are a few simple things that can save money throughout the year when using a water heater includes; adding an insulation jacket if your water heater is older and insulating any exposed pipework with inexpensive foam lagging. This will actually make a larger saving through the year than turning your water heater off when going on holiday.
Please contact Ability for a free no-obligation quotation if you would like a water heater installed by telephone on 01892 514495 for alternatively by email email@example.com