Packing for a trip is a good time to think about the appliances you’re leaving behind, and your water heater is one worth a few minutes of attention. A little prep before you go can lower your energy use and lower the odds of returning home to a wet basement.
Should You Turn the Water Heater Down or Off?
For most Capital Region homeowners, the smartest move is to turn the temperature down rather than shut the unit off entirely. Many gas and electric tanks have a “vacation” or “VAC” setting on the thermostat dial that keeps the unit idling without heating a full tank you won’t be using.
- Short trips (a few days): Use the vacation setting or simply turn the dial down. There’s little benefit to a full shutdown.
- Longer trips (a week or more): The vacation setting saves more energy over time, since the heater isn’t reheating water nobody is touching.
- Winter trips: Be careful about going too low or shutting off heat sources in your home, since cold pipes can freeze and burst. Keep your house comfortably warm even when you’re away.
Why Not Just Shut It Off Completely?
You can turn a water heater off for a long trip, but there are trade-offs. For gas units, that may mean relighting a pilot or restarting the unit when you get home, and a fully cold tank takes time to reheat. The bigger reason we caution against a full shutdown in winter is freeze risk: water sitting in a cold tank and the lines feeding it can be vulnerable if your home loses heat. For most vacations, turning the temperature down strikes the right balance between saving energy and keeping things simple.
Consider Shutting Off the Water Supply
One of the best things you can do before any longer trip is shut off the main water supply to your home, or at least the cold-water shutoff valve that feeds the water heater. This is about leak protection. A worn supply line, a failing tank, or a stuck valve can let water run for days while you’re gone, and that adds up to serious damage fast.
- Locate your main shutoff valve before you leave so you’re not hunting for it while rushing out the door.
- If you shut off the main, the water already in the tank stays put, but no new water can flow if something fails.
- If you’re unsure where your shutoffs are or whether they still turn smoothly, it’s worth having them checked.
Quick Pre-Vacation Water Heater Checklist
Run through these before you head out:
- Set the thermostat to the vacation setting or turn the temperature down.
- Look around the base of the tank for any signs of rust, moisture, or pooling water.
- Make sure nothing flammable is stored near a gas unit.
- Shut off the water supply for longer trips, and keep your home heated in winter.
- If your tank is more than 10 to 12 years old and already showing its age, get it looked at before you leave rather than after.
Coming Home: What to Check First
When you get back, turn the temperature back up and give the tank time to recover before expecting a hot shower. If you shut off the water main, turn it back on slowly and run a faucet to clear any air. Take a quick look at the floor around the unit, and if you notice any new moisture, discoloration, or odd noises, don’t ignore it.
Empire State Plumbing is a family-run team serving the Capital Region since 2006, and we’re happy to check your water heater before a trip or help if something’s wrong when you get home. Call us at (518) 482-4205 or book online for same-day help, Monday through Friday.