The Factors of a Water Heater Tank Explosion

When it comes to needing to do servicing on ones water heater, it is a fairly minimal maintenance device. Even so, one essential aspect of it should be examined routinely. Hot Water Heater Repair Boca Raton FL wishes to pass along this safety information regarding ones water heater today. Too much temperature when combined with tank deterioration inside the storage tank could cause an explosion. When the water temperature is less than 212 degrees Fahrenheit, one shall be protected from an explosion, though there is a threat of scalding at that temperature. However, if the water temperature is over 212 degrees, water changes into steam, which will expand to 1,700 times the space it takes up as water. This is when an explosion can also occur.

Warning Indications of a Water Heater Explosion

The leading sign is if one goes to get hot water from a faucet and only steam comes out. Immediately turn off power if one owns an electric water heater. If one owns a gas hot water heater, turn off the gas valve going to the water heater. Next, give us a call to come evaluate the scenario.

Minimizing Potential Water Heater Dangers

The most essential upkeep job having a water heater is to check the pressure relief valve, also called the T&P valve, on a standard schedule. This valve helps control the pressure buildup inside the water storage tank to protect against a dangerous increase in temperature and overpressure.


Take note, the water discharge with a T&P valve can be really hot. If you do not feel at ease testing the valve contact us. Also, executing any sort of repairs to the valve should really be executed by a qualified plumbing repair company.

How to Test the T&P Valve

Remove anything from around the area close to the overflow pipe and floor drain. Raise the test handle for approximately 5 seconds or until the water runs clean. Release the handle. If the T&P valve keeps on running with water, lift up the handle up and down rapidly to have it reseat itself. One might have to do so a couple of times. IF it has not been tested for a while, it might be difficult to raise it at first. Don’t use a lot of force, but might need to make use of just a little. If the T&P valve remains leaking, it needs to be replaced. Additional items to watch out for are rust on the stem of the valve. If there is any water seeping out of the valve stem or from the drain valve. Seeking far more ideas? Take a look at our additional articles here:

Water Heater Maintenance Infographic

Boca Raton FL Water Heater Maintenance

Related T&P Valve Testing Videos

Mythbusters did a test of the potential dangers of hot water heater explosions here:

Water Heater T&P Valve Repair Boca Raton FL

What the Experts Say

  • The discharge from a T&P valve can be very hot. It is very important that all T&P valves be installed properly with a discharge line piped downward to an adequate drain to avoid property damage and to minimize possible human contact.
    Read more…

Watts Water Technologies

If the temperature in your heater remains high after you turn down the thermostat, the thermostat may be faulty. Consult a professional for repair. Read more…

Home Guides

Pressure relief valves sometime develop a drip when opened for the first time in years. Try opening and closing it a few times to see if it will seat itself. If you have a large leak or the drip doesn’t stop on its own in a day or two, the valve will need to be replaced.  Read more…

Today's Homeowner

Check out some of our other water heater tips in our blog