Gas Control Valve – $300 to $500 It’s important to get this replaced, as expensive as the cost to replace may be—without it, the unit won’t be safe to operate since gas flow isn’t properly controlled.
Thereof, How do I know if my gas valve is bad?
– Turn off the gas supply valve to your appliance to test whether your valve is capable of shutting down properly. …
– Open the manual gas switch if the gas valve fails to operate and look to see if gas is flowing to the main burner or pilot.
Also to know is, What causes gas valve failure? When They Fail There are several reasons this valve may stop working properly. The valve itself may have simply worn out or may be damaged due to basement seepage or submersion. Alternately, one of the electronic gas ignition components or a glitch in the safety circuit may be to blame.
Subsequently, question is, Are water heater thermostats interchangeable? No, all water heater thermostats are not universal. There are some variances in thermostats between single element water heaters and dual element water heaters. Also, in dual element water heaters, there is a difference in the upper and lower thermostats. … Common residential dual element water heaters are 240 volts.
Also, What does gas control valve failure mean?
Water heater problems that may be caused by the gas control valve include a faulty hot water heater thermostat, faulty gas valve, pilot light that won’t light, and tripped heat limiter. Here’s what you need to know about replacing your water heater’s gas control valve.
How do you reset the gas valve on a water heater?
Why does a hot water heater have two thermostats?
A dual-element water heater uses two heating elements controlled by two separate thermostats. … When it reaches a specified temperature, it shuts off, and the lower heating element takes over, heating the rest of the water. This is an efficient, money-saving feature, as the water is heated in a consistent manner.
How much does it cost to replace a gas valve?
Gas Valve or Smart Valve If your gas valve needs to have a liquid propane valve added during installation, the price will also be higher by about $50. Universal gas valves are cheaper than brand name valves. With all this in mind, the price for a replacement job on a gas valve ranges from $195 to $870.
How do you test a gas valve?
– Turn off the furnace at the wall control. …
– Take out the bolts in the service panel on the side of the furnace using a nut driver. …
– Pull the wires off the gas valve terminals. …
– Turn the test control on the multimeter to “mV,” which stands for millivolt.
Where is the gas valve on a water heater?
All gas appliances have a separate shut-off valve, and it’s usually found within a few feet of the appliance. To find the gas shut-off valve on your water heater, simply look for a single handle, which is usually located at the bottom of the unit. To turn off the gas, turn this valve clockwise.
Do you have to drain a water heater to change the gas valve?
Removing and replacing a gas valve requires you to completely drain the water heater, turn off the gas control valve, turn off the gas and water supply.
How do you remove a gas valve from a water heater?
How does a dual thermostat water heater work?
The basic operation of a two thermostat system (upper and lower) on an electric water heater of 240 volt supply is as follows: … The lower thermostat switch will close and heat up the bottom portion of the tank until the water is heated to the setting of that thermostat. At this point the tank will be full of hot water.
How do you replace a water heater control valve?
How much does it cost to replace a gas control valve?
Gas Control Valve – $300 to $500 It’s important to get this replaced, as expensive as the cost to replace may be—without it, the unit won’t be safe to operate since gas flow isn’t properly controlled.
Are gas control valves Universal?
Do they make a universal water heater gas valve? No such thing … because the flow of gas to pilot and burner much match the BTU output of heater… Honeywell electronic gas controls receive power from thermopile that supplies electric current to a circuit board (see images).
How does a water heater gas control valve work?
The gas control valve allows the pilot to be ignited, and the lit pilot heats the thermocouple. Once the water heater thermocouple is heated, it sends a signal to the gas control valve which allows the burner to operate, heating the water in the tank.
Don’t forget to share this post 
References and Further Readings :
