Water on the garage floor. No hot water at 6 a.m. A hissing sound you don't like. Here's what to do in the first 15 minutes, and how to tell a real emergency from one that can wait until morning.
TL;DR: If you need emergency water heater repair in Greenville, start by making it safe. Smell gas? Get out and call 911 or Piedmont Natural Gas from outside. Otherwise: shut off the power or gas, close the cold water valve on top of the tank, open a hot faucet, and contain the water. Then call a plumber. A leaking tank can't be repaired, but most other failures can, and a few can safely wait until morning.
Your water heater picked a terrible time to quit. Maybe you walked into the garage and stepped in a puddle. Maybe the shower ran cold before work. Maybe the tank is making a noise you've never heard before and you're not sure whether to be worried.
Take a breath. Most water heater emergencies are manageable if you do a few things in the right order. We're Derek and Jean, and we've walked a lot of Greenville homeowners through this over the phone. Here's the same advice we give them.
Not every water heater problem means drop everything. Sorting yours into the right bucket tells you how fast you need to move.
If you're in the first or second bucket, here's what to do. Most homeowners can get through all of this in about 15 minutes.
Electric water heater: Go to your breaker panel and find the breaker labeled "water heater." It's usually a double breaker (two switches tied together). Flip it to off. If nothing is labeled and the floor around the panel is dry, you can turn off the main breaker.
Gas water heater: Find the control knob on the front of the gas valve near the bottom of the tank and turn it to "Off." For extra peace of mind, close the gas shutoff valve on the line feeding the heater. The valve is closed when the handle sits crosswise to the pipe.
This is the step people skip, and it matters. An electric water heater that keeps running while the tank drains can burn out its heating elements. A gas unit has no business firing while you're dealing with a leak.
Look at the top of the water heater. You'll see two pipes. The cold water inlet has a shutoff valve on it, usually a lever or a round handle. Turn it off (lever crosswise, or the handle clockwise until it stops).
This stops new water from refilling the tank, which is what keeps a leak going. The rest of your house still has cold water.
If that valve won't budge, or it's the thing that's leaking, shut off the main water valve to the house instead. In most Upstate homes it's in the crawlspace, the garage, or near where the water line enters the house.
Open the hot side of a sink faucet somewhere in the house and leave it open. This relieves pressure in the tank and lines and lets air in, which helps if you need to drain.
Towels, a shop vac, a mop bucket. Move boxes, rugs, and anything stored near the heater. If the heater sits in a drain pan, check that the pan's drain line isn't clogged.
If the leak is coming from the tank body, draining it limits how much water ends up on your floor. Connect a garden hose to the drain valve near the bottom of the tank and run the other end outside or to a floor drain. Then open the valve.
One caution: the water in the tank can be hot enough to burn. If the unit was running recently, give it a couple of hours to cool before draining, or keep hands and feet clear of the hose end. If the drain valve is old plastic and won't open easily, leave it alone and let us handle it.
Snap pictures of the heater, the label, the leak, and any water damage. If you end up filing an insurance claim, photos taken before cleanup help. We can also provide invoices and a written description of what failed for your claim.
Call us at (864) 313-1289. Tell us what you're seeing and we'll help you figure out how urgent it is and get you the soonest available time. We handle emergency plumbing during normal business hours.
If this happens after hours, the steps above are exactly what makes it safe to wait. With the power or gas off and the water shut off, a leaking water heater is just a mess, not a growing one. Call us first thing, or book online tonight and we'll reach out.
We start by figuring out what actually failed. That matters, because a lot of "emergencies" turn out to be a $150 to $350 part, not a new water heater.
If it's a repair, we'll quote it upfront and fix it. If the tank is leaking or the unit is past saving, we'll show you why and give you replacement options and pricing before any work starts. A standard 40 to 50 gallon tank water heater runs roughly $800 to $2,500 installed in the Greenville area, depending on the unit and what the install requires.
The question we hear most is "How fast can you get a new one in?" For a standard tank swap, it's often quick. We'll give you a straight answer on timing when you call, based on what you have and what's in stock. If you're curious about going tankless, that's a conversation worth having, but it usually needs more planning than an emergency allows. Here's our breakdown of tankless vs. tank water heaters if you want to think it over.
And if your unit is on the edge, our guide on whether to repair or replace your water heater walks through the math we use.
Most water heater emergencies give warning signs first. Rust in the hot water, a damp spot under the tank, popping noises, hot water that runs out faster than it used to. If your unit is past 10 years old and showing any of these, a planned replacement costs less and stresses you out less than an emergency one. Here are the signs your water heater needs replacing.
Two other easy wins: flush the tank on a regular schedule, and learn where your cold water shutoff and breaker are now, before you need them.
Q: Is a leaking water heater an emergency? A: It depends where the water is coming from. A leak from the tank body means the tank has failed and should be replaced soon, since it will get worse. A leak from a fitting or valve is often repairable. Either way, shut off the power or gas and the cold water supply right away to limit damage.
Q: Should I turn off my water heater if it's leaking? A: Yes. Turn off the breaker for an electric unit, or turn the gas control knob to off for a gas unit. Then close the cold water valve on top of the tank. That stops the tank from refilling and keeps the heater from running while it drains.
Q: Can I still use water in my house if the water heater is leaking? A: Usually, yes. Once you close the shutoff valve on the water heater's cold supply line, the rest of the house keeps cold water. You'll only lose all water if you had to shut off the main.
Q: What if my water heater breaks after hours? A: Make it safe: power or gas off, cold supply off, a hot faucet open, and the water contained. At that point it can wait until morning. Call us first thing at (864) 313-1289 or book online and we'll reach out. If you smell gas, leave the house and call 911 or Piedmont Natural Gas at 800-752-7504 from outside.
Q: How much does emergency water heater repair cost in Greenville? A: Common repairs like a thermostat, heating element, thermocouple, or relief valve usually run $100 to $350 installed. A full replacement for a standard tank is roughly $800 to $2,500 installed. We quote everything upfront before work begins.
Q: Does homeowners insurance cover a leaking water heater? A: Many policies cover sudden water damage to your home but not the water heater itself when it fails from age or wear. Check your policy and take photos before cleanup. We can provide documentation of what failed to support your claim.
Plumbing Heroes is owner-operated and based in Taylors. We serve homeowners across Greenville, Greer, Taylors, Simpsonville, Mauldin, and Travelers Rest. When your water heater fails, you'll get an honest diagnosis, both the repair and replacement numbers when they apply, and no pressure either way. If a $200 part gets you back in hot water, that's what we'll recommend.
Call (864) 313-1289 or schedule water heater service online. Learn more about our water heater repair and replacement services.
Whether you’re dealing with an urgent plumbing issue or planning improvements for your home, our team is ready to help. Upstate homeowners trust Plumbing Heroes for dependable service, clear communication, and work that stands the test of time.
