The Causes of a Water Heater Tank Explosion

When it comes to having to do servicing on ones water heater, it is a rather minimal maintenance home appliance. Even so, one necessary aspect of it needs to be examined routinely. Water Heater Repair Carlsbad wants to pass on this safety material concerning ones water heater today.

Abnormal temperature if combined with tank deterioration within the storage tank might cause an explosion. If the water temperature is below 212 degrees Fahrenheit, one shall be safe from an explosion, though there is a risk of scalding at that temperature. However, if the water temperature is over 212 degrees, water changes into steam, which will then enlarge to 1,700 times the space it occupies as water. This is the time an explosion can also occur.

Cautionary 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 shut off power if one has an electric water heater. If one has a gas hot water heater, shut off the gas valve going to the water heater. Then, give us a call to come evaluate the problem.

Minimizing Potential Water Heater Dangers
The most important routine maintenance job having a water heater is to test the pressure relief valve, also known as the T&P valve, on a regular schedule. This valve helps regulate the pressure buildup on the interior of the water storage tank to avoid a serious rise in temperature and overpressure.

Be careful, the water release coming from a T&P valve might be rather hot. If you do not feel at ease evaluating the valve contact us. Additionally, undertaking any kind of repairs to the valve really should be done by a expert plumbing repair business.

How to Test the T&P Valve

Remove anything from around the place around the overflow pipe and floor drain.
Lift up the test handle for about 5 seconds or until the water runs clear.
Release the handle.
If the T&P valve continues to run with water, lift up the handle up and down quickly to have it reseat itself. One may have to do so a handful of times. IF it has not been tested for a while, it might be difficult to raise it at first. Don’t use excessive force, however could need to use a little.
If the T&P valve continues to leak, it needs to be changed.

Additional points to watch out for are deterioration on the stem of the valve. If there is any water seeping out of the valve stem or out of the drain valve.

Water Heater Maintenance Infographic


Carlsbad 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 Katy TX

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