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6 Common Reasons Your Gas Water Heater May Not Be Working

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The water heater is one of the most essential appliances in any home. The water heater heats the water in the home. If it is not working properly, you might be unable to wash dishes, shower, or do laundry until the problem is fixed.

Gas water heaters work by heating water with natural gas. The thermostat setting can affect the temperature of the tank. This can cause the water to quickly boil, making it difficult to diagnose any issues with the heater. These are some of the most common reasons why a gas water heater might not work.


Water heaters aren’t appliances that are safe to use. These heaters contain boiling water under pressure. This can cause burns to nearby people. 1 Also, they are fueled by flammable natural gases. Leakages in gas valves and pipes should be addressed immediately. Water heater repairs should only be attempted by professionals due to the high risk of water heaters and the complexity of these appliances. To avoid safety issues and future problems, even experienced DIYers should not attempt to repair water heaters.

The Problem: Water Temperature Issues

You may have to adjust the thermostat of your water heater if the water temperature is too high or low. The thermostat might not be the problem. Regular flushing of gas water heaters is necessary to remove any sediment buildup. These mineral deposits can settle in the tank and gradually clog the element at its base, creating an insulation layer between the water and heating element.

If the dip tube of your water heater is broken or damaged, you could also experience problems with water temperature. This is the part of the water heater that directs cold water from the tank to the bottom. However, a damaged dip tube could allow cold water to escape to the top of tank. The hot water will then mix with it and lower the water temperature.

Temperature of water can be affected by the pilot light and gas lines. Make sure the pilot light is on and the gas line valve has been opened. The water heater will not have fuel or heat water if it isn’t open. You can try relighting your pilot light but if that fails, call a professional to evaluate the situation and possibly clean or replace the thermocouple.

The issue: Discolored, rusty or dirty water

Hot water from the heater can be a sign of trouble. The presence of rusty water from the heater is an indicator that there are potential problems.

Scale buildup from heavy minerals like calcium and magnesium can cause water to become discolored and dirty. If this is a problem that occurs frequently, it can be fixed by flushing out the water heater.

The issue: Foul Water Odors

You should not be only concerned about the appearance of the water. A strong odor from the water is a sign that the gas hot water not working in nz. If you notice a strong sewage smell coming from the water heater, then it is likely that there is a problem with the tank.

Water may also smell like sulfur. The pilot light may have a slight sulfuric smell and should be re-lit. However, a strong smell could indicate a gas line problem. Turn off the gas water heater if this happens. Make sure to ventilate the area as best you can before calling a plumber or the gas utility company. You should leave the area until the leak is fixed.

The issue: Leaking Tank

Internal condensation is the reason the water heater makes sizzling noises. This is an indication that there may be a leak. Leakage in the water heater is not easy to repair. It all depends on the location of the leak. The most common cause of leaks at the top is a loose or defective valve. If this happens, plumbers with plumbing experience will be able to tighten the valve using a set of channel lock, replace the valve or repair the connection between valve and tank.

It is important to remember that if the water is coming from the bottom of your tank, this could indicate that your tank has corroded and should be replaced. To inspect the leakage and determine the best way to fix or replace your water heater, contact a professional plumber.

Pilot Light Trouble is the Issue

A pilot light is used to ignite a gas water heater. The pilot light lightens the burner when the water temperature drops below the set thermostat level. This heats the element at the bottom of the tank which then heats the water inside the tank. This also means that the water heater will not work properly if the pilot light is damaged.

If the pilot light stops working or it is not lighting, or if it goes out frequently, then the tube or orifice of the pilot light can get clogged up or worn down. The problem could also be caused by a loose or defective thermocouple, gas in the gas line, and a defective gas valve. To resolve the problem, contact a professional plumber or water heater technician.

Faulty Valves: The Issue

Nearly every appliance that uses water will have at minimum one valve. Water heaters are no exception. They usually have a temperature relief and pressure relief valve as well as a tank drain at the bottom of the appliance. At the top of the tank, you will find an outlet and inlet valve for the water heater. These valves are susceptible to leakage so make sure to inspect them frequently and then take the necessary steps to fix them. If you have the necessary skills to repair or replace the water heater’s valves, it is possible to do so yourself. However, if you don’t feel confident, a professional plumber can help.

If the pressure inside the tank is too high, the pressure relief valve opens to release steam and water. This valve is designed to prevent the tank from burping or blowing off a valve. If the valve starts hissing or spraying water it is an indication that something is wrong. Turn off the water heater immediately. Then, contact a plumber for repairs and inspection.



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