What Causes a Hot Water Tank to Explode

When it comes to having to do servicing on ones water heater, it is a fairly minimal maintenance appliance. Nevertheless, one significant element of it has to be checked out regularly. Water Heater Repair Roswell wants to pass on this safety material about ones water heater today.

Too much temperature when joined with tank corrosion inside of the storage tank could cause an explosion. If the water temperature is under 212 degrees Fahrenheit, one is going to be safe from an explosion, though there is a threat of scalding at that temperature. But, if the water temperature is above 212 degrees, water transforms into steam, which will then enlarge to 1,700 times the space it occupies as water. This is when an explosion can occur.

Warning Indicators of a Water Heater Explosion
The leading sign is if one goes to get hot water from a faucet and only steam comes out. Promptly turn off electric power if one possesses 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 assess the predicament.

Minimizing Potential Water Heater Dangers
The primary routine maintenance endeavor having a water heater is to check the pressure relief valve, also referred to as the T&P valve, on a usual basis. This valve helps manage the pressure accumulation inside of the water storage tank to protect against a dangerous increase in temperature and overpressure.

Be careful, the water release coming from a T&P valve may be really hot. If you do not feel safe testing the valve let us know. Also, doing any type of fixes to the valve should really be undertaken by a experienced plumbing repair business.

How to Test the T&P Valve

Clear the space near the overflow pipe and floor drain.
Raise the test handle for around 5 seconds or until the water runs clear.
Release the handle.
If the T&P valve keeps on running with water, raise the handle up and down rapidly to have it reseat itself. One might have to do this a few times. IF it has not been tested for a while, it might be difficult to raise it at first. Don’t use too much force, although might need to utilize just a little.
If the T&P valve continues to have water coming out, it needs to be replaced.

Additional things to look for are rust on the stem of the valve. If there is any water leaking out of the valve stem or out of the drain valve.

Water Heater Maintenance Infographic


Roswell 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