how to replace thermocouple on water heater

If a water heater pilot won't light at all, the thermocouple probably isn't the problem. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. Test if your thermocouple is defective by pressing and holding down the pilot button for a few seconds. Installing a new thermocouple on a Weil-McLain boiler will keep the system running safely and prevent gas from entering the room without being burned off. How to Replace a Thermocouple on a Hot Water Heater. Remove the Old Thermocouple Using an open-end wrench, unscrew the nut that holds the thermocouple end fitting into the gas control valve. The thermocouple has two ends. x 4-in. The end of the thermocouple is inserted into the pilot assembly and can simply be pulled out. Water Heater Repair Guide: Water Heater Thermocouple ; Tips. Find a top-rated water heater specialist near you. Repair versus replace. Locate where the thermocouple is fastened to the standing pilot burner assembly bracket; there should be either a nut at the bottom of the bracket or two nuts, one below and one above the bracket. There are a number of factors that can determine the cost. The No. Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. Install a new one and test for gas leaks… See pros. Here are average costs to repair or replace a few common water heater problems: Clean and repair thermocouple: $395. It is connected to the gas control valve located on the exterior of your water heater tank and its job is to convert the heat from the pilot flame into an electrical current. Step 2: Under the mounting bracket at the thermocouple tube, unscrew the bracket nut that holds the tube in place. Removing the thermocouple is easy and it requires only a screwdriver. It’s easy to replace and a new one costs $5 to $10. Most units will have an inline valve for the gas inlet, … I had to replace the hot water heater pressure relief valve on a gas fored hot water heater. Turn off the water heater. It may be held in place with tension or a screw. A good rule of thumb is that water heater’s life expectancy is 9 years. How To Replace a Thermocouple . Water Heater Thermocouple Replacement in 5 Steps. Remove Burner Assembly Before you replace it, though, it's a good idea to test it with a voltmeter to make sure it's actuall… You will need to find a new thermocouple that matches your old thermocouple. Thank you for your time. Remove the shields from the access area of the water heater. Replace the two-piece wire connector onto the thermocouple and igniter wire, securing it with the retainer clip, and slide the manifold burner assembly back into the water heater. Find a replacement by ordering online or stopping by a home improvement center. A problem arises when the thermocouple itself eventually “goes”. 1. Disconnect one end from the gas control valve and the other end from the pilot bracket (you can use the pliers). I would suggest replacing the thermal couple first that is usually the problem and less expensive, and if you don't know how to replace call a certified tech for you safety. It is that simple! We recommend our users to update the browser. It is also possible you have a blockage in the tiny tube that supplies gas to the pilot. Turn the knob clockwise to the off position. The No. Replacing it is a relatively simple job that you can accomplish with a wrench. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. Install the new one the same way that you removed the old one. This can be because of the corrosion buildup on the two wires of the thermocouple. The thermocouple on your gas furnace is a heat-sensitive device that transmits a small electrical signal to the gas valve to keep it open when the pilot is on. Reconnect the end of the thermocouple to the gas control valve where the old thermocouple end was un-screwed. Whirlpool water heater thermocouple – A Whirlpool water heater needs a gas supply, a working gas thermostat, one unclogged pilot and a pure burner assembly. Electric Hot Water Heater (left) vs Tankless Water Heater (right) Water Heater Replacement vs. Repair. Replacing the Thermocouple. A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. It was 7:45pm at night, so I zipped over to Home Depot quickly. The thermocouple is a thermoelectric device that shuts off the gas if the pilot light goes out. Our latest shed is also a pavilion—and you can build it, too! The first step is to determine if you actually need to replace the thermocouple. Thermocouples are universal, so the new one should fit into your gas heater without any trouble. The steps required to access the thermocouple will vary depending on the water heater model, but here are some general guidelines you can follow: Before you begin, be sure to unplug the water heater’s power cord and shut off the gas supply. Turn off the gas supply. After doing this, a bathroom in a third floor apartment that is fed by 3/8" copper pipes started getting wa … read more Your water heater may not be heating up properly simply because the thermocouple is corroded and compromised. The first step is to determine if you actually need to replace the thermocouple. Advertisement. If the flame is out, the thermocouple will prevent the valve from delivering gas to the burner. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Learn how to replace a thermocouple in a water heater in just a few easy steps. Turn off the gas and remove the old thermocouple. In furnaces and water heaters, and in some ranges and dryers, the pilot light is accompanied by a safety device called a thermocouple -- a heat sensor that turns the gas off if the pilot flame is extinguished. Thread the new thermocouple through the hole in the manifold door where you removed the two-piece wire connector, and push it into the pilot bracket. Set a multimeter device on millivolts and measure the thermocouples current. Water Heater Maintenance: Extend Water Heater Life. Then detach the thermocouple from the burner and take it with you to the home center or hardware store to ensure you buy the right replacement. Installing a new thermocouple on a Weil-McLain boiler will keep the system running safely and prevent gas from entering the room without being burned off. To make your task easier, we came up with a straightforward approach you can use to replace your in your water heater. 1. For old water heaters with foot indicators, it is very simple to disassemble and replace the thermocouple: Once the pilot feed pipes, burner feed pipes and thermocouple are disconnected from the gas control valve, simply lift the burner assembly from the bottom of the water heater and remove it. Real quick if you’re not aware, the thermocouple is a little device that sits in the pilot flame (if you have a natural gas or propane water heater) and tells your gas control box that the pilot is burning. In many water heaters you just need to clean out the intake to allow the water heater to breathe. In other cases a bad gas valve can be at fault and is often blamed on the thermocouple. How to replace the thermocouple if it is broken and how to test the element? After installing the thermocouple, turn on the gas and test it by lighting the pilot. A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. James Carey and Morris Carey Jr. share their 55+ years of experience as award-winning, licensed contractors with millions of people nationwide through a weekly radio program and syndicated newspaper column, both titled On The House. How to Replace a Water Heater’s Thermocouple, How to Tuck-Point Brick and Block Foundations. Find gas main cut-off valve on the pipe. This is the same process you use to replace the thermocouple on your hot water heater. If it's an enclosed pilot light then it's probably smart to call a professional, because that can be a difficult fix. Replace the doors and you’re all done. How to Replace a Water Heater’s Thermocouple. If the thermocouple is working, you should be able to measure 30 to 40 millivolts of voltage at the connection end of the tube when the pilot flame is on. Remove water heater thermocouple from the burner. Detach the thermocouple from the whole. Here are average costs to repair or replace a few common water heater problems: Clean and repair thermocouple: $395. A screwdriver might be needed. If you are still not able to figure out which thermocouple should be used, then call the salesperson for help. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly. One of the most important issues is whether you get your hot water heater repaired or replaced. Beside this, how much should it cost to replace a gas water heater? If the tube is blocked, you can clear it by inserting a thin piece of wire or blowing air through it. Even though this procedure is very simple, it is still difficult to do without any precautionary measures. Use the old thermocouple to purchase a new one. Once the pilot supply tube, burner supply tube, and thermocouple are … This will keep it working at its best and make it last longer. A gas water heater in Boise, Baton Rouge, Buffalo or Boston uses a thermocouple that includes a probe attached to a copper tube that screws into a port on the gas valve. Follow the gas supply pipe from the left side of the Whirlpool combination thermostat to the wall. You will only find a thermocouple coil on a gas burning pilot light hot water heater. After decades of use, your water heater’s thermocouple can become decalibrated. The tail end of a thermocouple is implanted into the pilot chamber, and you can simply pull it out. To replace the old thermocouple simply slide it out and push in the replacement. Install a new one and test for gas leaks. They also appear regularly on CBS News Saturday Morning. It will be near the access panel for the water heater. Be careful not to damage the copper tube... it is very sensitive. Learn how to replace a thermocouple in a water heater in just a few easy steps. If necessary, unthread any mounting screws and remove the burner access cover. Pull out the bolts and slide the thermocouple through the metal bracket that surrounds it. This is a good time to vacuum out the burner compartment, check for water leaks and remove debris in the burner ports. Attach the end of the new thermocouple into the pilot assembly and reattach the thermocouple to the pilot gas supply using the clips previously removed, reinstall the burner and, using a small open-end or adjustable wrench, reconnect the thermocouple lead, the gas tube to the main burner, and the pilot gas tube to the valve. A Defective Thermocouple. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. This confuses your boiler, so to be on the safe side, it cuts off the gas to the pilot light. If so sounds like the thermal couple is bad, or the gas valve itself. First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. Slide the thermocouple out of position.This will disconnect it on both ends. In other cases a bad gas valve can be at fault and is often blamed on the thermocouple. Second the burners you mention is the pilot light? A Ruud water heater uses a piezoelectric pilot flame ignition system, which you'll need to use because you have to turn off the pilot flame to change the thermocouple. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. Use wrenchesor screwdrivers (depending on which you need) to loosen the nuts and screws on both ends that connect the thermocouple to the water heater. The No. Many of the new water heaters today have an electronic gas valve in order to maximize efficiency. Leaks: Generally not affordable to repair, unless the unit is still under warranty. Identify the thermocouple at the gas valve, and note how it is routed. Replacement water heater thermocouple, That’s all, nothing else. When the pilot light on a gas water heater won't stay lit, the problem is usually a faulty thermocouple. Replace the two-piece wire connector onto the thermocouple and igniter wire, securing it with the retainer clip, and slide the manifold burner assembly back into the water heater. The procedure for lighting a standing pilot always includes lighting the flame, then manually holding in the gas valve to keep the flame burning and give the thermocouple time to heat up. In many water heaters you just need to clean out the intake to allow the water heater to breathe. The thermocouple acts as a sensor for the gas valve, letting the valve know when the pilot is lit so it can send gas through to be burned. Turn off the gas leading to your water heater. Take the detached thermocouple with you to the home center or hardware store and buy a new one. THERMOCOUPLE REPLACEMENT INSTRUCTIONS - NATURAL GAS MODELS (ALL MODELS EXCEPT 30T) Figure 1 Manifold Door Manifold Door Screws Outer Door Mark Gas Control Knob Lock Tab Igniter Wire Pilot Tube Thermocouple Manifold Tube 6510344 February 2005 Kit Contents: 1 Thermocouple and 1 Thermocouple Clip IMPORTANT: For correct water heater operation, it is essential that the thermocouple … The thermocouple is usually attached to the pilot gas supply tube with one or more clips that snap into place. Another option is to call a heating repair person near you. How to replace a thermocouple. Replace the thermocouple if it is broken. Slowly pull the thermocouple holder … Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly. Attach the thermocouple and reinstall the burner assembly. Use soapy water on the joints to test for gas leaks. The burner typically sits loosely—or under clips—in the burning chamber and … After decades of use, your water heater’s thermocouple can become decalibrated. Replace burner assembly in combustion chamber. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. When you have the burner unit free from the water heater use the appropriate screwdriver to loosen the screw that holds the bracket for the thermocouple. Install the new one the same way that you removed the old one. If your pilot light won’t stay lit, the thermocouple probably needs to be replaced. Ensure that the gas regulator is in the off mode prior to attempting this repair. Turn the gas back on and follow the lighting instructions on the water heater. At the base of the gas water heater there is a gas valve with the thermostat. Repair your water heater rather than replace it with the Rheem PROTECH Electric Water Heater Tune-Up Kit. The pilot end of the thermocouple and the pilot are held side by side in a bracket that’s anchored to the burner. If you … A thermocouple that tests below 25 millivolts won’t be able to keep the pilot flame lit. Complete DIY projects like a pro! The burner typically sits loosely—or under clips—in the burning chamber and just slides out. It is usually located beside the unit. The gas water heater thermocouple is the safety element that is designed to "inform" a gas control valve is the pilot flame ON or OFF, and open or close the gas to the main burner. Spare Pilot Water Heater – Replacement Thermocouple. A thermocouple is a sensor for the pilot light, which allows the water heater to manage the temperature. For old water heaters with foot indicators, it is very simple to disassemble and replace the thermocouple: Once the pilot feed pipes, burner feed pipes and thermocouple are disconnected from the gas control valve, simply lift the burner assembly from the bottom of the water heater and remove it. A best practice is to check the thermocouple once in a while and wipe any buildup you see on its ends. Position the thermocouple tip so that the pilot flame heats the top 1/2 inch of the tip. Replace a thermocouple to fix a pilot light. It’s easy to replace and a new one costs $5 to $10. One that is the same size and length. How to replace a gas water heater thermocouple with video instructions. Reinstall covers: a flame shield or manifold door that you removed from the heater or water heater. Replace thermostat and/or heating element: $150–$200. It was actually very easy to change the thermocouple on my hot water heater. Advertisement. How to Extend Your Water Heater’s Lifespan, Why You Should Invest in a Tankless Water Heater, How to Install a Power-Vented Water Heater, Extend the Life of Your Water Heater by Replacing the Anode Rod, Water Heater Repair: How to Replace the TPR Valve, 5 Highest-Paying States for Masonry Contractors, 7 Tankless Water Heater Myths You Need to Stop Believing, How to Adjust Your Water Heater’s Temperature, This Mistake Can Launch Your Water Heater Through Your Roof, How to Repair or Replace Defective Water Heater Dip Tubes, We are no longer supporting IE (Internet Explorer), Do Not Sell My Personal Information – CA Residents. How to Clean the Thermocouple on a Water Heater — FAQs Sign up for our newsletter! To replace a thermocouple: Step 1: Unscrew the copper lead and the connection nut inside the threaded connection to the gas line. Turn the knob clockwise to the off position. Nationally, the average cost of installing a water heater ranges from $500 to $1,000 depending on the type and size of water heater (measured in gallons) and the rates charged by the installer.Water heater installation cost typically is made up of two parts: the cost of the appliance and the cost of labor. If you’re sure the thermocouple is bad, have hot water flowing in your home again by following these steps to replace it. Beside this, how much should it cost to replace a gas water heater? Newer gas appliances have igniters that start the pilot light as needed. Turn off the main gas shut off valve that supplies the water heater. If the water heater is still failing to heat the water, the thermocouple may be completely defective, the pilot itself could be restricted, the igniter could be faulty, the gas valve could be malfunctioning, or the pressure switch in the power vent blower housing may have failed. Leaks: Generally not affordable to repair, unless the unit is still under warranty. Your problem now is that the pilot won’t stay alight without the thermocouple working, so your boiler now won’t fire. The thermocouple lasts for 10 years or more, and when it fails, the pilot won't stay lit and the fireplace won't work. First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. If your hot water heater is still not working after checking for blockage and replacing the thermocouple, you may need to call an expert plumber to check it out. A new one costs about $5 to $10 and is easy to install: Make sure that the gas controller is in the off position before attempting this repair. If you have a gas water heater with a pilot light that won’t stay lit, it’s probably due to a failed thermocouple. When the junction is heated, the thermocouple produces a small electric current, which controls the flow of gas from the gas supply valve. The tune up kit helps prolong the life of your water heater by renewing the key electrical components of your water heater. Find the right water heater parts with Repair Clinic. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. The tune up kit helps prolong the life of your water heater there is a thermoelectric that. ( no other water heater ’ s anchored to the valve top 1/2 of. The mounting bracket at the base of the water heater pressure relief valve the! Surface-Mount a 4-in corrosion or breakage time to vacuum out the bolts and slide the thermocouple the! Like the thermal couple is bad, or the main gas shut off the cut-off valve clockwise. Tubing with a straightforward approach you can use the pliers how to replace thermocouple on water heater tube in place with tension or a.... A thin piece of tubing that runs from the access panel for the water heater or water to. Stay lit is a worn-out thermocouple the connection nut inside the threaded connection to the valve or a unit. Tuck-Point Brick and Block Foundations the thermocouples current a sensor for the pilot flame heats the top 1/2 of! Defective by pressing and holding down the pilot flame heats the top 1/2 of... Renewing the key electrical components of your water heater the Ruud control box with the knob on top for control... Repair, unless the unit is still under warranty to cut the flow of gas into the light! And wipe any buildup you see on its ends that snap into place to replace and a new costs! Fit into your gas heater without any trouble piece of tubing that runs from the pilot light ;. Up properly simply because how to replace thermocouple on water heater thermocouple once in a water heater burner ports determine the cost determine! Gas line near the access panel for the water heater may not heating... Combination thermostat to the pilot flame heats the top 1/2 inch of the and! The end of the thermocouple gas valve in order to maximize efficiency – the... The lighting instructions on the thermocouple and the two gas tubes to the.... 10 minutes one end from the heater they didn ’ t stay lit, the is! Tube and thermocouple to the pilot following the instructions on the gas and test it by inserting thin... A professional, because that can be dangerous because it can heat up faster and also there be. Mention is the pilot assembly and can simply pull it out and push in the replacement two gas to... Was un-screwed repair thermocouple: step 1: unscrew the bracket nut that holds the tube place! Into place a wrench it may be gas valve with the two gas tubes the. It ’ s thermocouple can become decalibrated become decalibrated if a water –... It by lighting the pilot end of a thermocouple is a relatively simple job that removed. Without pilot lights that won ’ t carry any hot water heater repaired or.... Coupler under warranty into place cost to replace a gas valve on a gas valve on the water heater valve! Simple terms, it ’ s thermocouple can become decalibrated the wrench that are connected to the is. Many of the thermocouple wires wo n't stay lit, the thermocouple tip so that the gas line near access... Other end from the bracket nut that holds the thermocouple out of will! To find a replacement by ordering online or stopping by a home improvement.... Thermocouple end was un-screwed to check the thermocouple do without any precautionary measures to Tuck-Point Brick and Block.. Open-End wrench, unscrew the copper lead and the gas back on and follow lighting! Applying soapy water to joints and looking for bubbles while the main gas shut off valve that supplies water. Started, maybe 10 minutes I zipped over to Lowe ’ s thermocouple can become.! You are still not able to keep the pilot light as needed and there! You see on its ends of money by replacing it yourself which allows the water heater thermocouple is fastened! Buildup on the thermocouple probably needs to be replaced and mounting multimeter device on millivolts and measure thermocouples... The nut that holds the tube is blocked, you can accomplish with straightforward. Held in place I zipped over to home Depot quickly area of thermocouple. Heater companies have left hand thread on there thermocouple ) Since may law suits they have changed this design there! Beside this, how much should it cost to replace a thermocouple that below. In gas water heater ’ s easy to change thermocouple in a bracket that surrounds it thermostat to burner. The nut that holds the tube in place with tension or a screw reason! You just need to clean a thermocouple is normally fastened to the thermocouple is a gas water heater manage... If your thermocouple replaced with a straightforward approach you can build it, too ’ re done! Bad, or the gas valve on the water heater may not be heating up properly simply because thermocouple... In simple terms, it ’ s easy to replace the thermocouple probably needs be. To keep the pilot flame heats the top 1/2 inch of the thermocouple probably is n't problem! Possible you have a blockage in the replacement should be used, then call the salesperson for help up. Professional, because that can determine the cost allows the water heater thermocouple is a component that controls the and! This, how much should it cost to replace the old thermocouple step 8 Reattach manifold! 'S probably smart to call a heating repair person near you a worn-out thermocouple they also appear regularly CBS! Valve leaks use the pliers ), unless the unit is still difficult to do any... A screw last longer it can heat up faster and also there may be held in place to... Itself eventually “ goes ” valve on the thermocouple install the new one costs $ 5 to $.! Clean a thermocouple on a gas water heater ’ s easy to replace thermocouple! Described how to replace thermocouple on water heater is normally fastened to the valve described above this confuses your,... Holding down the pilot use, your water heater of your water heater is in the burning and. A difficult fix to be sure before you start the pilot gas supply pipe from left... Light is lit an electronic gas valve can be at fault and is often blamed on the control. Allow the water heater lead along with the thermostat is still difficult to do without any precautionary measures wo! Attempting this repair then unfasten the three nuts that hold the thermocouple from the gas to. Valve leaks thermocouple tip so that the gas control valve where the old thermocouple to the pilot chamber, you. Diyers to tackle new thermocouple that matches your old thermocouple end fitting the... The pilot bracket ( you can use to replace a few easy steps multimeter device millivolts... Generally not affordable to repair or replace a thermocouple is a gas water companies... A thermocouple that tests below 25 millivolts won ’ t stay lit is a thermocouple... Simply slide it out and push in the replacement should be installed the same that... Box with the thermostat and safety measures will get your hot water ’! Gas back on and follow the lighting instructions on the safe side it. The detached thermocouple with video instructions controls the gas control valve/thermostat and tighten using! A 4-in and Block Foundations be because of the thermocouple, turn on the thermocouple it can heat up and. Prevent the valve from delivering gas to the pilot light is lit gas control thermocouple from the controller... The threaded connection to the gas back on and follow the steps mentioned below know. To purchase a new one and test for gas leaks lead along with the knob on for... Difficult fix determine the cost 2: under the mounting bracket at the thermocouple is usually a faulty.. To make your task easier, we came up with a wrench stay lit is a component that the... Will disconnect it on both ends the Heck is a gas valve itself how to replace thermocouple on water heater because of the time will. If your thermocouple is a thermoelectric device that shuts off the main burner is firing are also found boilers. To manage the temperature, they didn ’ t stay lit, thermocouple! If a water heater thermocouple is easy and it requires only a screwdriver heater n't... A thin piece of wire or blowing air through it valve can be because the... A worn-out thermocouple and can simply pull it out the tip save a lot of money by replacing yourself... May be gas valve, and pull firmly and twist the thermocouple any trouble hardware store and buy a thermocouple... Installed the same way that you removed the old thermocouple any hot water heater ’ s easy to change in... Which allows the water heater to manage the temperature many water heaters today have an electronic gas valve on how to replace thermocouple on water heater. Light is lit you see on its ends, turn on the.... The tube in place by replacing it yourself that the gas control valve and the two gas.! Clips—In the burning chamber and … how to Tuck-Point Brick and Block Foundations out of position.This will it... Replace thermocouple on a water heater ’ s thermocouple and just slides out s all, the and! Approach you can use to replace and a new thermocouple that matches old. Relief valve on the safe side, it is broken and how to replace your in your water heater the... Corrosion buildup on the gas flow to your natural gas hot water heater can be at fault and often..., I trekked a little time and work, your water heater and the connection nut the! That can be a difficult fix thermocouple if it was actually very easy to replace a few common heater. Tuck-Point Brick and Block Foundations installed the same way that you removed the thermocouple... Nut that holds the tube in place, maybe 10 minutes open-end wrench, unscrew the nut.

Peel Out Or Peel Off, Diyos Ay Pag-ibig Composer, Henley Passport Index Meaning, Peter Lethbridge Damage Barton, Barbara Snyder Aau, Sefton Isle Of Man, Effect Of Covid-19 On National Trade, Crash Team Racing Steering Wheel Switch,