Waking up to a cold shower feels like an emergency, and it usually is not. Most of the no-hot-water calls we get from Woodbridge come down to a short list of causes you can check yourself in a few minutes. Here is how to work through them safely, whether you have an electric or a gas water heater.

Start with one question: no hot water at all, or not enough?

If you have no hot water at all, something has stopped the heater cold: a tripped breaker, a pilot that went out, or a failed part. If you have some hot water but it turns cold fast, the heater is running but losing capacity, usually sediment, a broken dip tube, a low thermostat, or a tank that is simply too old or too small for the household. That difference tells you where to look.

If you have an electric water heater

Check the breaker first. Electric heaters draw a lot and can trip their breaker; find it in your panel, and if it is off or sitting halfway, flip it fully off and back on. Next, press the reset button: behind a small access panel on the tank is a red high-temperature reset. If it has popped, push it in. If it trips again right away, stop there and call, that points to a failing element or thermostat. Finally, check the thermostat setting in case someone turned it down; 120 degrees is the safe, efficient number. One safety note: do not pull the element or wiring covers unless you know what you are doing and the power is off, since these run on 240 volts.

If you have a gas water heater

Look through the little window near the base for the pilot flame. If it is out, relight it following the exact steps printed on the label. If it lights but will not stay lit, the thermocouple is usually the culprit, a common and inexpensive fix. Confirm the gas valve to the heater is on and that your other gas appliances are working. And the important one: if you ever smell gas, a rotten-egg odor, do not touch any switch or the heater. Leave the house and call your gas utility from outside.

Lukewarm water, or hot water that runs out fast

This is the heater working but underperforming. The most common reason is sediment. Our moderately hard water leaves mineral sediment in the bottom of the tank, and that layer insulates the burner or element from the water, stealing capacity. A flush often brings it back, and it is worth doing yearly anyway. Other causes are a broken dip tube dumping cold water at the top, a thermostat set too low, or an aging tank that has quietly lost efficiency.

Rusty or smelly hot water

If your hot water looks rusty but the cold runs clear, the tank may be corroding from the inside or the anode rod may be spent. On an older heater that is worth a professional look before it starts leaking.

When to call us

Call when the pilot will not stay lit, the breaker keeps tripping, there is water pooling around the base of the tank, the hot water is rusty or smells of sulfur, or the heater is past ten to twelve years old and clearly struggling. We can tell you quickly whether it is a simple repair or whether you are better off weighing your options; our guide to repairing versus replacing a water heater walks through that call, and if it is time, here is what a new install involves. We are here during regular business hours for Woodbridge, Dale City, Lake Ridge, and the surrounding area. Schedule service →