Home heating systems need maintenance, repairs and upgrades periodically. This is less challenging than a bathroom or kitchen upgrade, but in many cases, these types of jobs often require a specialist.
Most repairs to a gas water heater are made at the burner control. If your heater leaks, the tank is rusted through and the entire unit must be replaced. Call a HVAC specialist to replace a gas water heater.
Below is a quick troubleshooting guide to gas water heater problems:
If the unit suddenly stops heating water, try relighting the pilot. If it does not stay lit, the thermocouple probably needs to be replaced. If that does not solve the problem, you may need to clean the burner.
If the flame is mostly yellow rather than mostly blue, clean the burner.
If water isn't heating sufficiently even though the thermostat is turned up and the flames are blue, drain the tank and refill it.
If you have hard water, unscrew and remove the anode rod once a year. Look for a 1-inch nut in the top of the heater. Loosen the nut; the anode rod will be attached. If it's encrusted with minerals, replace it to get more efficient operation.
For any of the above tasks, if you are uncomfortable, contact Central Plumbing and Heating.
A temperature- and pressure-relief (TPR) valve is a safety device that provides an outlet for water in case the unit overheats. To test that it's working, pull up on the little lever; water should flow out. If not, or if water drips from the valve, the TPR valve needs to be replaced. Contact Central Plumbing and Heating.