Yes, you should turn your water heater to "vacation mode" (or its lowest setting) if you are leaving home for more than a few days. This lowers the temperature to around 50∘ F to 55∘ F, saving energy and preventing the pipes from freezing without the risks of shutting it off completely.
Vacation mode is an energy-saving setting that lowers your water heater's temperature to a minimum level (usually around 50∘F50 raised to the composed with power F50∘F to 60∘F60 raised to the composed with power F60∘F) while you are away. It prevents the tank from constantly reheating unused water and stops pipes from freezing in cold climates, lowering standby energy loss.
If you have an electric water heater, it is recommended that you shut off the power and the cold water supply to the water heater if you are going away for any length of time. You will save electricity and limit any damage in case the tank leaks. Upon your return, do a visual inspection of the water heater.
Shut Off The Water Heater
If you have a gas water heater, you can turn the heater off at the source and shut off the gas valve. If you have an electric heater, it can be turned off at the breaker. Once off, you can open the valve or spigot on the water heater to drain the water into a pail or bucket.
Simply turn off the water supply to your home. It is easy to do and only takes a few minutes. Just locate the main shutoff in your home. If you are having trouble finding it, you can ask a professional plumber to help you locate it.
To keep your pipes from freezing, run a slow trickle of cold water. The temperature of the water itself isn't as important as the movement; running water inhibits ice crystal formation. You should start running your faucets at a steady drip when exterior temperatures drop to 𝟐𝟎∘𝐅 or below.
Yes, it is perfectly safe to turn off your hot water heater for a week. However, to prevent bacterial growth like Legionella and avoid damaging the system, do not drain the tank.
If all of your water is turned off, the main pipe may be frozen. The water heaters will not drain if they are at ground level and there is no water flowing, so there's no need to worry about that. You might be able to locate the frozen pipe by checking outside.
To compensate for heat loss, you may need to slightly increase the water heater's thermostat setting during winter. The recommended temperature is between 120–140°F for most households.
When preparing for a vacation, focus on four key areas: water, temperature, electronics, and small appliances. Shutting off the main water valve, adjusting your thermostat, and unplugging energy-sucking electronics will prevent costly disasters and reduce your energy bill while you are away.
Shutting off the water supply does not immediately affect the water heater, but you must turn off the water heater's power source (breaker or gas valve). If the tank empties and continues to heat, the elements will burn out, potentially causing a fire or damaging the unit.
Most water heaters have a setting on their temperature dial labeled “VACATION” or, if that setting is not available, choose “PILOT.” This drops your water heater's temperature and reduces your energy consumption. Change your setting if you'll be gone for three or more days.
So, the heater might not break right away. But this isn't always safe. If the tank runs dry and the heater keeps running, it can still overheat or break. That's why manufacturers recommend turning off heaters when the water is off.
No, you should not drain your water heater for a standard vacation. Draining and refilling the tank is a major hassle and carries risks—like accidentally dry-firing electric elements. Instead, for optimal safety and efficiency, leave the tank full and turn it to its "Vacation" setting (or 120∘𝐹).
A 10-minute shower typically uses 20 to 25 gallons of hot water. Because showers are usually mixed with cold and hot water to reach a comfortable temperature, the actual volume of hot water drawn from your heater will usually be slightly less, while a low-flow showerhead can reduce this amount by up to 50%.
Electric Water Heater
Next, inspect the thermostat. Many electric heaters have a small panel with dials hidden behind covers. Set the temperature to a safe level, usually around 120°F. Once that's done, head to your electrical panel and locate the breaker labeled “water heater.” Switch it to the ON position.
In winter, you should set your water heater between 120°F and 130°F (49°C to 54°C). This range strikes the perfect balance between keeping your hot water warm enough to offset the cold incoming groundwater and keeping your energy bills and scalding risks in check.
Yes. Cold temperatures can cause the metal on your water heater to expand and contract, potentially causing damage, and eventually leaks. This could happen more often if you have an older water heater or if the unit is placed in an unheated area of the home.
Q: Can a water heater freeze in a cold garage? A: It's possible, especially in very cold climates. To prevent freezing, ensure proper insulation on pipes, choose a model rated for cold environments, and consider installing a unit with built-in freeze protection.
When a cold snap hovers around or below 32 degrees Fahrenheit for a couple days in a row it's time to let at least one faucet drip. Pay close attention to water pipes that are in attics, garages, basements or crawl spaces because temperatures in these unheated interior spaces usually mimic outdoor temperatures.
Insulate everything: Wrap tanks, pipes, and fittings with closed-cell foam or fiberglass. Add controlled heat: Use a tank heater or blanket where electricity is available. Keep water moving: Circulation prevents ice formation and protects pressure lines.
2. Do I need to turn off my water heater when I leave? Yes. Either drain it or set it to “vacation mode” to prevent issues while you're gone.
It takes time for your home to warm up and cool down. If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it.
Yes, you can absolutely take a shower, but the water temperature will depend on how recently the heater was turned off.